311 Merged
311 Merged
311 Merged
MATHEMATICS (311)
Time: 3 hrs Maximum Marks: 100
Note:
i. This question paper consists of 45 questions in all.
ii. All questions are compulsory.
iii. Marks are given against each question.
iv. Section A consists of
a. Q.No. 1 to 20 – Multiple Choice type questions (MCQs) carrying 1 mark each. Select
and write the most appropriate option out of the four options given in each of these
questions. An internal choice has been provided in some of these questions. You have to
attempt only one of the given choices in such questions.
b. Q.No. 21 to 29 – Objective type questions. Q.No. 21 to 24 carry 02 marks each (with 2
sub-parts of 1 mark each), Q.No. 25 to 28 carry 04 marks each (with 4 sub-parts of 1
mark each) and Q.No. 29 carries 06 marks (with 6 sub-parts of 1 mark each). Attempt
these questions as per the instructions given for each of the questions 18 – 29.
v. Section B consists of
a. Q.No. 30 to 38 – Very Short questions carrying 02 marks each.
b. Q.No. 39 to 43 – Short Answer type questions carrying 04 marks each.
c. Q.No. 44 to 45 – Long Answer type questions carrying 06 marks each.
SECTION A
Q. No. Questions Marks
Q.No. 1 to 20 are the objective questions (MCQs) of 1 mark each:
An internal choice has been provided in some of these questions. You have to
attempt only one of the given choices in such questions.
1. (i) The coordinates of the midpoint of A (4, -1) and B(7, 2) are:
1
a) ,
b) ,
c) ,
d) ,
OR
(ii) The slope of the line segment joining the points A (2, 3) and B(6,-7) is:
a) -2
b) 2
c) −
d)
2. (i) The intercepts made by the line 3 x 2 y 12 0 on the coordinate axis are : 1
a) (4 and -6)
b) (-4 and 6)
c) (-4 and -6)
d) (4 and 6)
OR
1
(ii) The equation of the line passing through (3, 7) and (-2, 5) is
a) 2 x 5 y 29
b) 2 x 5 y 29 0
c) 2 x 5 y 29 0
d) 2 x 5 y 29
3. (i) The centre and radius of the circle 4𝑥 + 4𝑦 − 2𝑥 + 3𝑦 − 6 = 0 are :
1
1 3 109
, and
a) 4 8 8
1 3 109
, and
b) 4 8 8
1 3 109
, and
c) 4 8 8
1 3 109
, and
d) 4 8 8
OR
(ii) The equation of circle whose centre is (3,4) and radius in 5.
a) x y 6 x 8 y 25
2 2
b) x 2 y 2 6 x 8 y 50
c) x2 y 2 6 x 8 y 0
d) x2 y 2 6x 8 y 0
4.
The angles between the lines 2x+3y = 4 and 3x-2y =7 is 1
a) 2
b) 3
c) 4
d) 6
5. The coordinates of the centroid of the triangle whose vertices are:
1
( x1 , y1 ),( x2 , y2 ) and ( x3 , y3 ) :
a) ,
b) ,
c) ,
d) ,
2
6.
10 0 0 1
, then B =
(i) If A = 0
0 0 1 , then the value of AB is:
10
a) 0 0
0 0
b) 0 1
0 0
c) 0 0
1 1
d) 1 1
OR
1 a
(ii) If A = , 𝑡ℎ𝑒𝑛 𝐴 (𝑤ℎ𝑒𝑟𝑒 𝑛 ∈ 𝑁) is equal to:
0 1
1 na
a) 0 1
1 n2a
b) 0 1
1 na
c) 0 0
n na
d) 0 n
7. If A =
1 2
then the value of A+AT is:
3 4 1
2 5
a) 5 8
2 8
b) 5 5
2 5
c) 8 5
2 5
d) 5 8
8. 𝑝+𝑞 2 6 2
If = then the value of p is: 1
5 𝑞 5 2
a) 6
b) 4
3
c) 8
d) 5
9. If 𝑓(𝑥) = 𝑥 𝑎𝑛𝑑 𝑔(𝑥) = 3, then the value of 𝑓𝑜𝑔(𝑥) is :
a) 12
1
b) 15
c) 9
d) 18
b) f ( x ) x 2
c) f ( x) 2 x 1
d) 𝑓(𝑥) = 𝑥 + 1
12. If a binary operation * is defined on the set z of integers as a*b = 3a-b, then the value of
(2*3)*4 is 1
a) 2
b) 3
c) 4
d) 5
13. (i) If 𝑦 = 𝑥 , then the value of is
1
n 1
a) nx
n 1
b) nx
x n 1
c) n 1
x n 1
d) n 1
OR
sec x
C
a) m
b) sec mx tan mx c
4
tan x
C
c) m
tan mx
C
d) m
14. If 𝑠𝑖𝑛𝑦 = 𝑥𝑠𝑖𝑛(𝑎 + 𝑦), then is
1
a)
( )
( )
b)
c) 𝑠𝑖𝑛𝑎𝑠𝑖𝑛 (𝑎 + 𝑦)
d)
( )
15. (i) Which of the following is a vector quality?
a) Mass 1
b) Force
c) Time
d) Length
OR
5
1
d) 2
ab
OR
(ii) If 𝑎⃗ = 2𝚤̂ − 𝚥̂ + 2𝑘 and 𝑏⃗ = −𝚤̂ + 𝚥̂ − 𝑘 then the unit vector in the direction of 𝑎⃗ + 𝑏⃗
is
1 1
i k
a) 2 2
1 1
i k
b) 2 2
1 1
i k
c) 3 3
1 1
i k
d) 3 3
18.
(i) If 𝑎⃗ = 2ı̂ − 𝚥̂ + 𝑘 and b i 2 j 3k and c 3i p j 5k are coplanar. Then the 1
value of p is
a) 4
b) -4
c) 6
d) -6
OR
(ii) If a unit vector and (𝑥⃗ − 𝑎⃗). (𝑥⃗ + 𝑎⃗) = 15. Then the value of is |𝑥⃗| is
a) 14
b) 14
c) 4
d) -4
19. If the vectors 3𝚤̂ + 𝜆𝚥̂ + 𝑘 and 2𝚤̂ − 𝚥̂ + 8𝑘 are perpendicular to each other then the value if
𝜆 is 1
a) 7
b)
c) -14
d) 14
20. (i) Converse of the statement;
“if n is an odd number, then n2 in also an odd number is 1
a) If n2 is not an odd number, then n is also not an odd number
b) If n2 is an odd number, then n is also an odd number
c) If n is not an odd number, then n2 is also not an odd number
d) If n is not an odd number, then n2 is an odd number
OR
(ii) Contra positive of the statement “If a number is divisible by 6, then it is divisible by 3”
is
a) If a number is not divisible by 3, then it is not divisible by 6
6
b) If a number is not divisible by 6, then I is not divisible by 3
c) If a number divisible by 6, then it is not divisible by 3
d) If a number is divisible by 3, then it is divisible by 6
Q.No. 21 to 24 are the objective questions of 2 marks each:
Some of these questions have 4 sub-parts. You have to do any 2 sub-parts out of 4 sub-
parts in such questions.
21. Match column –I statement with the right option of column - II 1X2
If matrix A is order of 2X3 and matrix B is order of 3X2,
Column –I Column - II
P. 2X3
(i) order of matrix (AB) is Q. 2X2
(ii) order of matrix (BA) is R. 3X2
S. 3X3
22. Fill in the blanks: (Attempt any two parts from following questions (i to iv))
1X2
(i) If 𝑦 = 𝑒 + 𝑐, then the value of is ____________
7
(v) Inverse of a square matrix exists only if its determinant is not equal to _____
(vi) Co-factor of element (a11 i.e. 3)in the matrix 𝐴 =
3 −5
is ______
−4 2
26. Fill in the blanks: (Attempt any four parts from following questions (i to vi))
1X4
(i) If 𝑦 = 𝑠𝑒𝑐(3𝑥 ), then the value of is ______________
(ii) If 𝑦 = 𝑐𝑜𝑠 𝑥, then the value of is _________
(iii) The general solutions of the differential equation − 6𝑥 = 0 is given by y = ________
(iv) 𝑑
(𝑠𝑖𝑛 𝑥) = ______
𝑑𝑥
(v) The derivative of the function . is ___________
√
(vi) The rate of change of the area of a circle with respect to its radius r at r = 6 cm is __
27. Write TRUE for correct statement and FALSE for incorrect statements:
1X4
(Attempt any four parts from following questions (i to vi))
8
(v) 𝑟⃗ according to above part (iv) lies in
(a) XY Plane (b) YZ plane
(c) XZ plane (d) space but not on a XY, YZ, XZ plane.
o o o
(vi) If 𝑟⃗ makes 30 , 45 and 60 angle with x – axis, y – axis and z – axis, then find the
direction cosines of this vector.
Q.No. 29 is the objective question of 6 marks:
1X6
This question has 9 sub-parts. You have to do any 6 sub-parts out of 9 sub-parts in this
question.
29. Read the passage and answer the questions that follow it. (i to ix)
In calculus, optimization problems involve finding the maximum or minimum
values of a function, typically within a specified domain. These problems are
commonly encountered in various fields, such as economics, physics, and
engineering. One fundamental technique for solving optimization problems is to
use derivatives. To find the maximum or minimum of a function f(x), we first locate
its critical points by setting f′(x)=0 and then analyze the behavior of the function
around these points using the second derivative test. If f ′′(x)>0 at a critical point, it
indicates a local minimum, whereas if f ′′(x)<0, it signifies a local maximum.
Integrals, on the other hand, represent the accumulation of quantities over an
interval. They are used to find areas under curves and solve problems related to
accumulation, such as determining total distance traveled or total accumulated
quantities in processes.
(Attempt any 6 parts from following questions (i to ix))
Consider a function f(x) = 2x3 – 3x2 - 12x + 8
(i) How many critical points does the function have?
(a) 0 (b) 1 (c) 2 (d) 3
(ii) Which statement about critical points of the function f(x) is correct?
(a) All the critical points of f(x) are positive.
(b) All the critical points of f(x) are negative.
(c) Some critical points of f(x) are positive while others are negative.
(d) None of above as function f(x) does not have any critical points.
9
(v) Maximum value of f(x) is
(a) 10
(b) 15
(c) 20
(d) None of abovee as f(x) does not have maximum value.
SECTION – B
Question marks
Question
Number
30. 2
Find the equation of hyperbola with vertices (±3,0) and the foci (±5,0).
5,0).
OR
Find the equation of the parabola, whose focus is the point (2, 3) and
whose
directrix is the line x – 4y + 3 = 0.
31. 2
10
34. 2
Find
OR
Evaluate 𝑙𝑖𝑚 .
→
35. 2
If , find .
OR
Differentiate
36. 2
If , find for r = 2.
37. 2
Reduce the equation of the plane 4x – 5y + 6z – 120 = 0 to the intercept
form. Find its intercepts on the co
co-ordinate axes.
38. Find the coordinates of the point which divides the line segment joining 2
the points (2, 4, 3) and ((–4, 5, –6) internally in the ratio 2 : 1.
39. Find the eccentricity, coordinates of the foci and the length of the axes of 4
the ellipse 3x2 + 4y2 = 12.
40. Using elementary transformations, find the inverse of the matrix 4
A=
OR
Without expanding the determinants, prove that
𝑎+𝑏 𝑏+𝑐 𝑐+𝑎 𝑎 𝑏 𝑐
𝑏 + 𝑐 𝑐 + 𝑎 𝑎 + 𝑏 =2 𝑏 𝑐 𝑎
𝑐 + 𝑎 𝑎 + 𝑏 𝑏 + 𝑐 𝑐 𝑎 𝑏
41. 4
Prove that :
42. 4
11
43. Find the equation of the plane passing through the points (–1, 2, 3) and (2, 4
–3, 4) and which is perpendicular to the plane 3x + y – z + 5 = 0.
44. In a small scale industry a manufacturer produces two types of book 6
cases. The first type requires 3 hours on machine P and 2 hours on
machine Q for completion, whereas second type requires 3 hours on
machine P and 3 hours on machine Q. The machine P runs at the most 18
hours while the machine Q for at the most 14 hours per day. There is a
profit of Rs. 30 on each book case of the first type and Rs. 40 on each
book case of second type. How many book cases of each type to be
produced for the maximum profit?
OR
In a village, farmer has 50 hectare of land to grow two crops A and B. The
profit from crops A and B per hectare are estimated as Rs. 10,000 and Rs.
9,000 respectively. To control weeds, a liquid herbicide has to be used for
crops A and B at rates of 20 litres and 10 litres per hectare. Further, no
more than 800 litres of herbicide should be used in order to protect fish
and wild life using a pond which collects drainage from this land. How
much land should be allocated to each crop so as to maximize the total
profit?
45. A square metal sheet of side 48cm. has four equal squares removed from 6
the corners and the sides are then turned up so as to form an open box.
Determine the side of the square cut so that volume of the box is
maximum.
OR
Find the cone of maximum volume that can be inscribed in a sphere of
radius R.
12
Math 311
Marking Scheme
SECTION A
Q. No. Correct Answer Marks
1. (i) (d) 1
OR
(ii) (c)
2. (i) (b) 1
OR
(ii) (b)
3. (i) (c) 1
OR
(ii) (c)
4. (a) 1
5. (b) 1
6. (i) (c) 1
OR
(ii) (a)
7. (a) 1
8. (b) 1
9. (c) 1
10. (a) 1
11 (b) 1
12. (d) 1
13. (i) (a) 1
OR
(ii) (d)
14. (b) 1
15. (i) (b) 1
OR
(ii) (c)
16. (i) (c) 1
OR
(ii) (b)
17. (i) (c) 1
OR
(ii) (a)
18. (i) (b) 1
OR
(ii) (c)
19. (d) 1
20. (i) (b) 1
OR
(ii) (a)
21. (i)-P, (ii) – S 1X2
22. (i) 𝑒 1X2
(ii) 4
(iii) sinx
(iv) ±2
13
23. (i) T 1X2
(ii) F
(iii) T
(iv) F
24. (i) Sum of 2 and 3 is not 6 1X2
(ii) a ≥ −7 𝑎𝑛𝑑 𝑎 ≤ 7
25. (i) singular 1X4
(ii)skew – symmetric
(iii) A
(iv) 16
(v) zero
(vi) 2
26. (i) 15𝑥 𝑠𝑒𝑐(3𝑥 ) 𝑡𝑎𝑛(3𝑥 ) 1X4
(ii) 2cosxsinx or sin 2x
(iii)3x2 + C
(iv)
√
.(v) − /
(vi) 12π cm/s
27. (i) F 1X4
(ii) T
(iii) T
(iv) F
(v) F
(vi) T
28. (i) Position Vector 1X4
(ii) unit vector
(iii) Unit Orthogonal/ mutually perpendicular Vectors / co – initial vectors.
(iv) 0
(v) (a)
√
(vi) 〈 , , 〉
√
29. (i) (a) 1X6
(ii) (c)
(iii) (b)
(iv) (a)
(v) (b)
(vi) (c)
(vii) (c)
(viii) − 𝑥 − 6𝑥 + 8𝑥 + 𝐶
(ix)
14
Q SECTION B Step Total
No. Expected Correct Solution marks Marks
1
–
(𝑥 − 2) + (𝑦 − 3) = √
½
16x2 + y2 +8xy - 74x - 78y + 212 = 0
31
We have, A = 1
∴ |A| = (–2) × (–6) – (– 8) × 7
= 12 + 56
= 68 1
2
32
We have,
∴ M11 = 8, M12 = –6 ½X4 = 2
M21 = 2, M22 = –5 2
OR
Here both A and B are 2 × 3 matrices OR
3+7 2+3 4+2 10 5 6 1
𝐴+𝐵 = =
0+5 5+1 3+9 5 6 12
3−7 2−3 4−2 −4 −1 2 1
and 𝐴 − 𝐵 = =
0−5 5−1 3−9 −5 4 −6
33 Let 𝑐𝑜𝑠
√
=θ
1/2
√
Then = 𝑐𝑜𝑠 𝜃 1/2
𝑐𝑜𝑠 𝜃 = cos
1/2
𝜃=
Hence sec[𝑐𝑜𝑠
√
=] = sec = 1/2
√
2
34
15
∴ ½
½
=1
OR ½ 2
x 5 32 x 5 32 x 3 8 OR
lim lim
x 2 x 3 8 x2 x 2 x 2
1
x 5 25 3 3 x n an
lim lim x 2 524 322 20 As lim nan 1
x 2 x 2
= x 2 x 2 3 x a x a
1
35
We have,
½
∴
1
=
= ½ 2
OR
OR
d ex dx
1 sin x d e x e x d 1 sin x
dx 1
dx 1 sin x 1 sin x 2
2
36 Given A = πr
∴
=
1
=
At r=2, = 2π×2
= 4π
1 2
37 Equation of the plane is
4x – 5y + 6z – 120 = 0 or 4x – 5y + 6z = 120 1/2
This equation can be written as
– + = 1 or + + =1
–
1
Intercepts on the co-ordinate
ordinate axes are 30, –24 and 20 respectively.
1/2 2
38
Let A (2, 4, 3) and B (–4, 5, –6)
6) be the two points. ½
16
Again let P(x, y, z) divides AB in the ratio 2 : 1.
½
∴ ½
½
2
39
Given equation + = 1 where a2 = 4 and b2 = 3 1
e2= 1 – =½ 1
Coordinates of the foci are (1,0) and ((-1,0).
1
Length of the axes are 2a and 2b i.e. 4 and 22√3. 1 4
40
We have
A=
A=IA ½
1
⇒
1
⇒
⇒
1
⇒
4
Hence A–1 = ½
OR
𝑎+𝑏 𝑏+𝑐 𝑐+𝑎
L. H. S. = 𝑏 + 𝑐 𝑐 + 𝑎 𝑎 + 𝑏 OR
𝑐 + 𝑎 𝑎 + 𝑏 𝑏 + 𝑐
C1 C1+C2+C3
17
2 (𝑎 + 𝑏 + 𝑐) 𝑏 + 𝑐 𝑐 + 𝑎
1
= 2 (𝑎 + 𝑏 + 𝑐) 𝑐 + 𝑎 𝑎 + 𝑏
2 (𝑎 + 𝑏 + 𝑐) 𝑎 + 𝑏 𝑏 + 𝑐
Take 2 common from C1
𝑎 + 𝑏 + 𝑐 𝑏 + 𝑐 𝑐 + 𝑎
=2 𝑎 + 𝑏 + 𝑐 𝑐 + 𝑎 𝑎 + 𝑏 1
𝑎 + 𝑏 + 𝑐 𝑎 + 𝑏 𝑏 + 𝑐
C1 C1-C2
𝑎 𝑏 + 𝑐 𝑐 + 𝑎
=2 𝑏 𝑐 + 𝑎 𝑎 + 𝑏
𝑐 𝑎 + 𝑏 𝑏 + 𝑐 1
C3 C3-C1
𝑎 𝑏 + 𝑐 𝑐
=2 𝑏 𝑐 + 𝑎 𝑎
𝑐 𝑎 + 𝑏 𝑏 1
C2 C2-C3
𝑎 𝑏 𝑐
=2 𝑏 𝑐 𝑎 =R.H.S.
𝑐 𝑎 𝑏
41
L.H.S. = =
1
=
½
=
1 4
=
42
I= dx………….(i)
= dx
18
= dx…………(ii)
½
(i) + (ii)
1
⇒ 2I= =
1 4
⇒ I=
OR
dx x
sin 1 c
2 x2 2 OR
1 1
1 1
dx x
sin 1 sin 1 sin 1(0)
2 x2 2 0 2
So 0
2
0
4 4
1
43
Equations of any plane passing through the point ((–1, 2, 3) is
a (x + 1) + b (y – 2) + c (z – 3) = 00-------------(i) 1/2
since the point (2, –3,
3, 4) lies on the plane (i) so
1/2
3a – 5b + c = 0 -------------(ii)
Plane (i) is perpendicular to the plane 3x + y – z + 5 = 0 hence
1
3a + b – c = 0 -------------(iii)
By simplification we get
1
= = or = =
19
2
Obviously, x 0, y 0
Profit per hectare on crop A = Rs. 10000 ½
i.e., 2 x y 80 …(ii)
x 0, y 0 (non negative constraint) …(iii)
Let us draw the graph of the system of inequalities (i) to (iii). The feasible
region OABC is shown (shaded) in the figure.
The coordinates of the corner points O, A, B and C are (0, 0), (40, 0), (30,
30, 20) and (0,
50) respectively. Evaluation of the objective function Z 10000x 9000 y at these
2
vertices to find which one gives the maximum profit is done as follows:
20
1½
Now =24x–384
21
at x=8 =192–384= –192<0 1
∴ V is maximum at x = 8
Hence required side of square to be cut off is 8 cm. 1 6
OR
OR
Let ABC be the cone with radius R
BM = MC = x and height AM = y
In OMB, BM2 + OM2 = OB2
x2 + (y – R
R)2 = R2
x = 2Ry – y2
2
∴ V is maximum when y = 4R 1
3
22
QUESTION PAPER DESIGN-COMBINED
Subject : Mathematics (311) Senior Secondary Course
Maximum Marks : 100 Time: 3Hrs.
1.Weightage by Objectives
4. Weightage by Content
PART A
Section A: Prescribed Texts
(5 Poetry + 9 Prose) = 14 Marks
Answer the following questions:
1. Who is the poet of the poem “Where the Mind Is Without Fear”? (1 Mark)
2. What is the grandmother begging for in the poem “My Grandmother’s House”?
(1 Mark)
3. (1 Mark)
i. What kind of night was it when the scorpion bit the poet’s mother?
OR
ii. “Parting with his poison -flash
Of diabolic tail in the dark room- ”
What is the meaning of the word ‘flash’?
4. (1 Mark)
i. What does the phrase ‘narrow domestic walls’ mean?
OR
ii. What is meant by “mind is without fear and head is held high”?
5. (1 Mark)
i. Why does the poet call the wood ‘yellow wood’ in “The Road not Taken”?
OR
ii. What does ‘Way leads on to way’ mean?
ii. Which of the following is relevant for the title of the passage?
A. Dreams Always Come True
B. Humans Vs Robots
C. Falling Down and Getting Up
D. Failure and Grit Go Hand in Hand
iii. What do you understand from the line “Falling down or failing is one of the most
agonizing, embarrassing and scary human experiences?”
A. Falling down makes us angry
B. Failure can deeply affect our emotions
C. Stay positive and be optimistic
D. Self-control is empowering
iv. What is the tone of the following context? “Falling down or failing is one of the
most.....educational, empowering and essential parts of living a successful and fulfilling
life?”
A. Humorous
B. Optimistic
C. Horrifying
D. Solemn
Section C: Grammar
14.Choose the correct alternatives (any ONE). (1X1= 1 Mark)
i. My family _______________ in Bhopal for five years now.
A. has lived
B. has been living
C. had lived
D. lived
ii. The wind ______________ heavily yesterday.
A. blows
B. had blew
C. blown
D. was blowing
15.Fill in the blanks of any THREE. (1X3= 3 Marks)
i. We should live _____________ our means.
ii. I could not agree ____________ him.
iii. He travelled all ______________ the world until he was eighty years old.
iv. The ball rolled _______ the hole.
16.Identify the type of any TWO sentences given below: (1X2= 2 Marks)
i. Siddhi went to the market and bought some fresh fruits.
A. Simple
B. Complex
C. Compound
D. None
ii. Abhisekh liked the shirt which his brother presented to him.
A. Simple
B. Complex
C. Compound
D. None
iii. I was very impressed with her last performance on the stage.
A. Simple
B. Complex
C. Compound
D. None
iv. They talk with him in English but he replies in French.
A. Simple
B. Complex
C. Compound
D. None
17.Fill in the blanks with appropriate ‘Wh-’questions (any TWO). (1X2= 2 Marks)
i. _______________ is your hobby, Bob?
My hobby is swimming.
ii. _______________ is you new job?
It’s interesting. I enjoy it.
iii. ________________ did the party end?
It ended before 8 pm.
iv. ________________ do you think about the party?
Well. it’s fun. I like the music best.
18. Choose the correct option with the passive form of verbs in any ONE of the statements
given below-: (1X1= 1 Marks)
i. Suman dusts and mops our house every morning.
A. Our house is dusted and mopped every morning by Suman.
B. Suman is dusting and mopping our house every day.
C. Our house is getting dusted and mopped every day.
D. Suman dusted our house daily.
ii. The President of the company donated a handsome amount to the museum.
A. A handsome amount is donated by the President of the company to the museum.
B. A handsome amount was donated by the President of the company to the
museum.
C. A handsome amount is being donated by the President of the company to the
museum.
D. A handsome amount will be donated by the President of the company to the
museum.
20. (1 Mark)
i. Read the following draft and complete it by selecting the most appropriate option.
A person’s physical appearance is less (a) _______________ than his character. Beauty is not
about having a pretty face but it is about having a pretty mind, a pretty heart and most
importantly a beautiful (b) ________________.
A. (a) thrilling (b) complexion
B. (a) interesting (b) reality
C. (a) important (b) soul
D. (a) interesting (b) soul
OR
ii. What is fluency in article writing?
A. Writer’s ability to produce the text sequentially
B. Ability to thank the audience
C. Ability to find out the cause and effect
D. None of the above
21. Read the questions carefully and identify any FOUR as True or False: (1X4= 4 Marks)
i. Identification mark of the object ’Found’ is a part of the Notice issued for ‘Found’.
ii. Notice is a type of article.
iii. By line of the report contains the name of the reporter:
iv. A formal letter should not be grammatically correct to have the desired effect on the
recipient.
v. In a memo, reasoning on hirings, firings, and purchasing, etc, is known as Recommendations.
vi. A good writer must avoid slangs in a good essay.
vii. In report writing the narration of the event is always written in the present tense.
viii. in letter writing, replying to enquiries come under the category of informal letter.
22. Answer any TWO of the following questions in one sentence: (1X2= 2 Marks)
i. While writing articles, where should the writer mention his/her name?
ii. ‘Expression of thanks’ is written in which type of the writing?
iii. Where should we write the name and designation of addresses in a business letter?
iv. What is the category of a letter of complaint?
Section E
Option I (English for Receptionists)
23. Read the questions carefully and choose the suitable answer: (1X2 =2 Marks)
i. What a receptionist DOES NOT need from the following list to do her job efficiently:
I. A telephone directory
II. A hobby diary
III. An index book of telephone numbers frequently used
IV. Names and addresses of hotels nearby
A. Only I
B. Only II
C. II and IV
D. None of the above
ii. What are the two prime requirements of a receptionist’s job?
A. Courtesy and diplomacy
B. Good manners and smile
C. Courtesy and good manners
D. Smile and diplomacy
OR
iii. Select two office duties from the following.
I. Welcome the guests/visitors and offer them help
II. Answer personal telephone calls effectively
III. Attend to non-routine enquiries
IV. Note down messages, make bookings, reservations, cancellations and plan schedules
V. Confuse the guests/visitors with any queries or problems that may arise.
A. I and III
B. I and IV
C. II and IV
D. III and V
24. ( 1 Mark)
i. The underlined expression used in this conversation is not appropriate on the phone.
Choose the correct response from the options given.
Receptionist : Good morning. Shimla Studios.
Rakesh : Here is Rakesh from Manali.
Rakesh : What do you want?
A. Hi, I was waiting for your phone.
B. Nice to know. How are you?
C. Why have you called, Rakesh?
D. What can I do for you, Mr. Rakesh?
OR
ii. Study the following dialogues to decide whether each dialogue is (i) a telephone
conversation or face-to-face interaction; and whether (ii) the tone is polite or rude.
Receptionist (R) : Hindustan Petroleum, Can I help you?
Man (M) : This is Ranjit Malik. Can I speak to Vikram Yadav, please?
Receptionist (R) : Hold the line, please
A. (i) Telephone conversation (ii) rude
B. (i) Face to Face ii) Rude
C. (i) Telephone conversation (ii) Polite
D. (i) Face to Face ii) Rude
25. Read the questions carefully and choose the suitable answer: (1X2 =2 Marks)
i. Arrange the steps of a telephonic conversation:
I. Offers help
II. Obtain caller’s identity
III. Greets and gives identity
IV. Acknowledge the call
V. Takes down a message
A. I, II, III, IV, V
B. V, IV, III, II, I
C. III, I, II, IV, V
D. III, V, II, IV, I
ii. Choose the general rule for calling out telephone numbers?
A. Numbers should be grouped in three digits, giving a slight pause between each pair.
B. When you give or ask for a telephone number, never repeat it to confirm if you have
the right number.
C. Within the pairs refer to numbers in digits. Eg: 32 is; three two not thirty-two 5642 is
five six/pause/four two.
D. When the same number/figure occurs in a pair between two pauses, say it two times.
PART B
Section A: Prescribed Texts
(5 Poetry +6 Prose) = 11 Marks
26. Answer ANY ONE of the following questions: (1X2=2 Marks)
i. How does the poet describe ‘heaven of freedom’? (Where the Mind is Without Fear)
ii. Why did the peasants say the name of God a hundred times? (Night of the Scorpion)
30. (2 marks)
i.What is the ‘surprise of the life’ that the train driver received? (The Tiger in the Tunnel)
OR
ii.According to the passage on stress management, a long stint of exhausting mental work
should be followed by what?
Section B: Non-prescribed Texts
Read the given passage carefully and answer the questions that follow:
Naval architects never claim that a ship is unsinkable, but the sinking of the passenger-and-car
ferry Estonia in the Baltic surely should never have happened. It was well designed and
carefully maintained. It carried the proper number of lifeboats. It had been thoroughly inspected
on the day of its fatal voyage. Yet hours later, the Estonia rolled over and sank in a cold, stormy
night. It went down so quickly that most of those on board, caught in their dark, flooding cabins,
had no chance to save themselves: Of those who managed to scramble overboard, only 139
survived. The rest died of hypothermia before the rescuers could pluck them from the cold sea.
The final death toll amounted to 912 souls. However, there were an unpleasant number of
questions about why the Estonia sank and why so many survivors were men in their prime,
while most of the dead were women, children, and the elderly.
31. Why was the sinking of Estonia surprising? (2 Marks)
32. (2 Marks)
i. What’s so unpleasant about the last fact mentioned in the passage?
OR
ii. What does the survivors’ list suggest?
Read the given passage carefully and answer the questions that follow:
Dolphins are regarded as the friendliest creatures in the sea and stories of them helping
drowning sailors have been common since Roman times. The more we learn about dolphins,
the more we realise that their society is more complex than people previously imagined. They
look after other dolphins when they are ill, care for pregnant mothers and protect the weakest
in the community, as we do. Some scientists have suggested that dolphins have a language but
it is much more probable that they communicate with each other without needing words. Could
any of these mammals be more intelligent than man? Certainly, the most common argument in
favour of man's superiority over them that we can kill them more easily than they can kill us is
the least satisfactory. On the contrary, the more we discover about these remarkable creatures,
the less we appear superior when we destroy them.
33. (2 Marks)
i. Mention two things that are similar to humans in the dolphin community.
OR
ii. According to the scientists, what is the medium of communication among the dolphins?
34. What do you feel about the most common argument in favour of man’s superiority over
dolphins? (2 Marks)
35. Find a word similar in meaning to any Two: (2 Marks)
i) safeguard
ii) dominance
iii) extraordinary
36. Read the following passage carefully and make a summary. (1X3= 3 Marks)
i. Most of the people who appear most often in history books are great conquerors and generals.
Strangely enough the people who really helped civilization forward are often never mentioned
at all. We do not know who made the first boat or calculated the length of the year, but we
know all about our killers and destroyers. We raise statues of them simply because they fought
bravely. But even animals fight, so do savages. To fight is not to be civilised. Moreover, there
are other ways of settling quarrels among men or nations. So really civilised people have been
those who brought peace and happiness to mankind. They have been prophets, saints, doctors,
inventors, and discoverers. They have been truly great since instead of inflicting pain and
hardships upon humanity they have healed their wounds. Instead of killing, they are really
civilised and deserve our attention and respect.
OR
ii. This century is the age of science. We cannot imagine our lives sans Science. Science has
become a part and parcel of our lives. Science has become a symbol of progress. The progress
is in the field of medicine, education, industry, etc., and we enjoy the comforts of science in all
fields. Science has developed an effective transport and communication system. Buses, cars,
trains, planes have made transportation easy and comfortable, safe, and fast. Man has even
landed on the moon with the help of technology. In the field of medicine, science has worked
wonders. Almost all kinds of diseases are entirely cured by modern drugs and medicines.
Medicine has reduced pain and suffering. Electricity is another important scientific invention.
the comforts of our life like electric lamps, refrigerators, fans, grinders, washing machines, etc.
are all run by electricity. Scientific methods of cultivation have solved the flood problem. The
pests destroying the crops are killed immediately by pesticides. Poultry and sericulture are also
improved. Thus, science is helpful in all walks of life and makes our life comfortable and
happy.
Section C: Grammar
37. Fill in the blanks using the passive form of the verbs given in brackets (any ONE).
(1x2= 2 marks)
i. Wind energy ________ (derive) through a process where wind _________ (use) to
generate mechanical power or electricity.
ii. Since recorded history, wind power _____ (use) to move ships, grind grain and pump
water. There is evidence that wind energy _____ (use) to propel boats along the Nile as
early as 5,000 B.C.
38. Change the following questions into indirect speech: (1X2= 2 marks)
i. She said, “Did you see my sister yesterday?”
ii. My teacher said, “What is your father doing these days?”
39. Combine the following any ONE pairs of sentences using the connectors given against
each pair. (1X2= 2 marks)
A.
i. a. I have bought a dictionary from the Book Fair.
b. It has been published by Oxford University Press for Indian students exclusively.
(which)
ii. a. Aarush will not accompany us on tour to Australia.
b. He is very busy preparing for entrance examinations. (because)
B.
i. a. I got a call from my father.
b. I started for Bhopal to attend to my ailing mother. (as soon as)
ii. a. Our tour to Kochi has been postponed
b. Our class teacher informed us last evening. (that)
MEMORANDUM
From:- Supervisor
Subject:- Misuse of Computers
Tl:- Mr. XYJ.
ii. You are Secretary of Gymkhana Club, Lucknow. Write a notice in not more than 50 words
informing the members to attend an extraordinary meeting of the governing body. Include
details like date, time, venue etc. Sign as Prabhu/Pratibha.
9.
i. A. that she as a baby was skinny and dark
ii. C. Travelling to Antarctica is not the end of the world.
10. any THREE
i. light bulb
ii. seven
iii. we have emotion
iv. Perseverance or grit
11. any THREE
i. C. “Failure should be our teacher, not our undertaker. Failure is delay not
defeat. It is a temporary detour, not a dead end.” Denis Waitley
ii. D. Failure and Grit Go Hand in Hand
iii. B. Failure can deeply affect our emotions
iv. B. Optimistic
12. any FIVE
i. False
ii. False
iii. True
iv. True
v. False
vi. False
vii. False
13. any ONE
i. A. Option (i)
ii. A. i and ii
14. any ONE
i. B. has been living
ii. D. was blowing
15. any THREE
i. within
ii. with
iii. over
iv. into
16. any TWO
i. compound
ii. complex
iii. simple
iv. simple
17. any TWO
i. What
ii. How
iii. When
iv. What
18. any ONE
i. A. Our house is dusted and mopped every morning by Suman.
ii. B. A handsome amount was donated by the President of the company to the museum.
19.
i. A. Option (i)
ii. C. I, II, IV
OR
iii. B. Option II
iv. C. Option (iii)
20.
i. D. (a) interesting (b) soul
OR
ii. A. Writer’s ability to produce the text sequentially
21. any FOUR
i. false
ii. false
iii. true
iv. true
v. true
vi. true
vii. false
viii. false
38.
i. She asked him/her if he had seen his/her sister the previous day.
ii. My teacher asked what my father was doing those days.
MEMORANDUM
From:- Supervisor
Subject :- Misuse of Computers
To :- Mr.- XYJ
Section E
Option I (English for Receptionists)
43. any ONE
i.because it gives no exact information, wastes time and money
ii.Disturbing noises in the background, callers providing long and difficult answers
44. any ONE
i. individual answer
ii. individual answer
45. individual answer
Option – II (ESP For Office Use)
43. any ONE
i. Reports are a form of written communication.
In business organisation reports provide information regarding progress,
implementation of plans and programmes. These are sent to senior officers.
ii.Things to be avoided while writing a report are—
a) personal feelings should not interfere while writing a report
b) analysis should not be based on a single piece of evidence
c) report should not be generalised without proper and logical evidence
d) one should not jump to conclusion
44. any ONE
i. individual answer
ii. individual answer
45. individual answer
QUESTION PAPER DESIGN
DESIGN-COMBINED
Subject: Physics (312) Senior Secondary Course
Sl. No. of
Type of Question Marks
No. questions
1. MCQ (1 mark) # 16 16
2. Objective Type Questions (1
(1*2 = 2 marks) ##
(with 2 sub-parts
parts of 1 mark each) 12 24
[Fill in the blanks, match the column, paragraph or case
case-
based questions, one--word questions, True False, etc.]
Total 28 40
3. Very Short Answer (2 marks) 9 18
4. Short Answer (SA) (3 marks) 4 12
5. Long Answer (LA) (5 marks) 2 10
Total 15 40
G. Total 43 80
1. Weightage by Objectives
Knowledge 30 30%
Understanding 35 35%
Application 35 35%
100 100%
MCQ 3 4 4 4 5
Fill in the Blanks 3 5
True-False 2 5 4
One -word answer 5 2
Match the Column 4
4.Weightage by Contents
Modules Marks
Difficulty 30 30%
Average 35 35%
Easy 35 35%
Total 100 100%
وساالتےکرپےچاکڈیزانئ )(Question Paper Design
یزاےئرئنیسڈنکیسریوکرس
اردو ()306
ت ت
لکربمن100: وق:نیتےٹنھگ
اقمدصےکاابتعرےسربمنوںیکمیسقت .1
وساالتیکومسقںےکاابتعرےسربمنوںیکمیسقت .2
ربمن امڈویل
22 امڈویل (1ہصحرثن)
22 امڈویل (2ہصحمظن)
15 امڈویل (3ہصحزغلاکاراقت)
26 امڈویل (4ہصحمظنیکدرگیاانصف)
15 اایتخریامڈویل
100 لکزیمان
ت
(افل)اہمروتںےکاابتعرےسرصتخمیزربمنوںیکمیسقت .4
1. Weightage by Objectives
Total 28 40
Subjective Type Questions
Very Short Answer (VSA) - 2 9* 2 18
Total 15 40
Grand Total 43 80
Note:
#
8 questions will have internal choices.
##
Alternative questions to be given in the question part.
*
4 questions will have internal choices.
**
2 questions will have internal choices.
***2 questions will have internal choices.
3. Weightage to Content Areas
3. States of Matter 08
4. Chemical Energetics 06
5. Chemical Dynamics 12
6. Chemistry of Elements 18
Total 80
Difficult 16 20
Average 40 50
Easy 24 30
Total 80 100
Bifurcation of Syllabus (2023)
SECTION A
S.NO. Questions Marks
Q.No. 1 to 16 are the objective questions of 1 mark each:
An internal choice has been provided in some of these questions. You
have to attempt only one of the given choices in such questions.
1. (i) The net force on a kite held stationary in the sky is- 1
A. 1N
B. Increasing
C. 0 N
D. Decreasing
OR
(ii) In terms of fundamental unit 1 N can be expressed as-
A. 1 N = 1 kg ms-2
B. 1 N = 1 kg m-3
C. 1 N = 1 kg-1ms-2
D. 1 N = kgms2
1
2. (i) The mass of a body is 2 kg, its weight is- 1
A. 19.6 N
B. 9.8 N
C. 10 N
D. 5 N
OR
(ii) A body of mass 200 g falls through air with an acceleration of 6 ms -2.
The air drag on the body is
A. 1200 N
B. 1.2 N
C. 1.96 N
D. 0.76 N
3. (i) A passenger in a moving bus is thrown forward when the bus is 1
suddenly stopped. This is explained
A. by Newton’s first law
B. by Newton’s second law
C. by Newton’s third law
D. by the principle of conservation of mass
OR
(ii) The need of banking of road is
A. To provide additional gravitational force for higher velocity
B. To provide additional centrifugal force for higher velocity
C. To provide additional centripetal force for higher velocity
D. To provide additional electrostatic force for higher velocity
4 (i) The phenomenon of Capillarity is due to 1
A. Cohesion.
B. Adhesion.
C. Cohesion and Adhesion both
D. neither Cohesion ,nor Adhesion
OR
(ii) For a non viscous, incompressible fluid in steady flow where the
area of cross section of pipe is halved the velocity of flow is-
A. Quadrupled
B. Tripled
C. Doubled
D. Unchanged
5 The excess of pressure inside two soap bubbles of diameters in the 1
ratio 4 : 1 is
(A) 1 : 4
(B) 2 : 1
(C) 1 : 2
(D) 4 : 1
2
6 Thermodynamics means 1
A. study of the relationship between heat and other forms of energy
B. study of the conversion of chemical energy to other forms of energy
C. study of the relationship between mechanical energy to other forms
of energy
D. study of the conversion of mechanical energy to other forms of
energy
7 (i) Out of the following the law of a thermodynamics law actually is- 1
A. Zeroth law of thermodynamics
B. Faraday’s Law of thermodynamics
C. Ideal Gas Law of thermodynamics
D. Boyle’s Law of thermodynamics
OR
(ii) Out of the following a type of thermodynamic system is-
A. Open system
B. Closed system
C. Thermally isolated system
D. All of the mentioned
8 Transverse progressive waves are characterised by 1
(A) compressions and rarefactions
(B) crests and troughs
(C) compressions and troughs
(D) crests and rarefactions
9 When a wave passes from one medium to another, there is change of 1
(A) frequency and velocity
(B) wavelength and velocity
(C) frequency and wavelength
(D) frequency, wavelength and velocity
10 (i) Number of beats produced by two waves of y1 = a sin 1000 πt, 1
y2 = a sin 1004 πt is
(a) 0
(b) 1
(c) 4
(d) 8
OR
(ii) A source of sound of frequency 150 Hz is moving in a direction
towards an observer with a velocity 110 ms -1. If the velocity of sound is
330 ms – 1 , the frequency of sound heard by the person is
(A) 225 Hz
(B) 200 Hz
(C) 150 Hz
(D) 100 Hz
3
11 The displacement y of a particle in a medium can be expressed as y = 1
10-6 sin(100t + 20x + π/4) where t is in second and x in meter . The
propagation constant of the wave is
(A) 100 s–1
(B) 10-6 m
(C) 20 m–1
(D) π/4 rad
12 Which of the following colour of white light deviates the most when 1
passes through a prism?
(A) Red
(B) Violet
(C) Yellow
(D) Green
13 (i) For total internal reflection, correct statement is- 1
(A) Light travels from rarer to denser medium.
(B) Light travels from denser to rarer medium.
(C) Light travels in air only.
(D) Light travels in water only.
OR
(ii) The cause of the blue color of the ocean is
A) reflection
B) scattering of light by water molecules
C) total internal reflection
D) refraction
14 The refracting angle of a prism is 30′ and its refractive index is 1.6. 1
Calculate the deviation caused by the prism.
A. 28′
B. 8′
C. 30′
D. 18′
15 In an experiment of scattering of alpha particle showed for the first time 1
that the atom has,
(A)Electron
(B)Proton
(C)Neutron
(D)Nucleus
4
16 According to Bohr’s postulates, an electrons revolve around the nucleus 1
in ______________orbits.
(A) Dynamic
(B) Stationary
(C) Lower
(D) First
OR
Which spectral series of hydrogen lie in UV region?
(A) Paschen
(B) Lyman
(C) Brackett
(D) Balmer
Q.No. 17 to 28 are the objective questions of 2 marks each:
Some of these questions have 4 sub-parts. You have to do any 2 sub-parts out
of 4 sub-parts in such questions.
17. Read the passage and answer the questions that follow it. 1X2
Friction between any two surfaces in contact is the force that opposes
the relative motion between them. The force of limiting friction (F)
between any two surfaces in contact is directly proportional to the
normal reaction (R) between them i .e . , F ∝ R or F= 𝜇𝑅 , where 𝜇 is
coefficient of limiting friction , then 𝜇 = tan𝜃.
Attempt any two parts from following questions (i to iv):
(i) The maximum force of static friction between a pair of surfaces is
independent of
(a) mass of the body (b) coefficient of friction
(c) area of contact (d) acceleration due to gravity
(ii) Unit of coefficient of limiting friction:
(a) N (b) Nm (c) N/m (d) unitless
(iii) Arrange in ascending order ; µr, µk, and µms (i.e. coefficient of rolling
friction, coefficient of kinetic friction, coefficient of maximum static
friction respectively.)
(a)µk ˂µr ˂µms
(b)µr ˂µk ˂µms
(c)µms ˂µr ˂µ
(d)none of these
(iv) The value of static friction acting on the body at rest which is under the
influence of applied external force of 5 N is
(a) 0 N (b) 5 N (c) 10 N (d) 2.5 N
18. Complete the sentence using following words: (Attempt any two parts 1X2
from following questions (i to iv))
[more, force, linear momentum, inertia, isolated, less]
(i) Total linear momentum of _________ system is conserved.
(ii) The rate of change of momentum is higher when force is ___________.
5
The fielder lowers his hands to catch a ball, just to minimize the
(iii)
____________.
Recoil of the gun is based on law of conservation of ______________.
(iv)
19. Read the passage and answer the questions that follow it. (i to ii) 1X2
Bernoulli’s Theorem has many applications among which one is a spray
gun which is shown in the figure where a piston pushes air out of a
nozzle. A thin tube of uniform cross section is connected to the nozzle.
The other end of the tube is in a small liquid container. As the piston
pushes air through the nozzle, the liquid from the container rises into the
nozzle and is sprayed out. For the spray gun shown, the radii of the
piston and the nozzle are 20 mm and 1 mm respectively. The upper end
of the container is open to the atmosphere.
6
22. Fill in the blanks: (Attempt any two parts from following questions) 1X2
(i) Kirchhoff’s first law for electric network is based on
(ii) Kirchhoff’s second law for electric network is based on
(iii) EMFs of two cells can be compared by using
(iv) Meter bridge works on the principle of _____________________.
23. Write TRUE for correct statement and FALSE for incorrect 1X2
statements:
(i) In refrigerator the source of heat is the environment and sink of heat is
the inner chamber of heat. ___________________
(ii) If door of a working refrigerator is kept open for a long time in a closed
room, the room will become cool.__________________
24. Match column –I statement with the right option of column - II 1X2
Column –I Column - II
P. Volume
(i) The internal energy of an ideal gas depends on Q. Temperature
(ii) A gas performs minimum work when it expands R. Isothermally
S. Isochorically
25. Fill in the blanks: (Attempt any two parts from following questions (i to 1X2
iv))
(i) A ray of light undergoes twice on passing through a prism
(ii) __________ is the most scattered colour.
(iii) The deviation through a prism is minimum when angle of incidence
is equal to angle of___________ .
(iv) According to Rayleigh’s law of scattering, The intensity of scattered
light is inversely proportional to the _____________ power of its
wavelength:
26. Match column –I statement with the right option of column - II 1X2
Column –I Column - II
P. Yellow
(i) Most deviated colour Q. Red
(ii) Least deviated colour R. Orange
S. Violet
27. Write TRUE for correct statement and FALSE for incorrect 1X2
statements: (Attempt any two parts from following questions (i to iv))
(i) -particles have highest ionizing power. ____
(ii)
Solar energy is mainly caused due to burning of Hydrogen in the
oxygen. ______
(iii)
Paschen series of hydrogen atom lie in UV region. _____
7
(iv)
The radius R of a nucleus is proportional to cube root of its mass
number. _______
28. Match column –I statement with the right option of column - II 1X2
Column –I Column - II
(i) SI unit of coefficient of P. Nsm–2
viscosity is Q. poise
(ii) CGS unit of coefficient of R. Nm–2
viscosity is
SECTION B
Q. Question Marks
No.
29. Describe in brief the formation of depletion region in a p-n junction diode with 2
a suitable diagram.
30. Draw a diagram to show experimental arrangement for observing the 2
photoelectric effect.
OR
Draw a plot showing the variation of photoelectric current with anode potential
for two different frequencies, v1 >v2, of incident radiation having the same
intensity. In which case will the stopping potential be higher?
31. What is nuclear fusion? Write an equation of nuclear fusion to support your 2
answer
32. Draw a restoring force of displacement graph for a helical spring. Write an 2
expression for the energy stored in the spring at maximum displacement.
33. Show that 1 KWh energy is equal to 3.6 106 J. 2
34. Show that magnetic energy required to build up the current I in a coil of self 2
inductance L is given by – ½ LI2.
OR
Find out the expression for the magnetic field due to a long solenoid carrying a
current I and having n number of turns per unit length.
35. Two capacitor of capacitance C1 and C2 are connected in series with dc voltage 2
V. Derive an expression for the equivalent capacitance of the combination of
the capacitor.
OR
Derive an expression for capacitance of parallel plate capacitor.
36. Explain why diffraction is a very common phenomenon in case of sound, but 2
not that common in case of light.
OR
Why are coherent sources necessary to produce a sustained interference pattern?
37. The angle of maximum polarisation for a certain medium is 60 0. Calculate the 2
refractive index of the medium.
8
38. Draw the circuit diagram of a full-wave rectifier using p-n junction diode. 3
Explain its working and show the output input waveforms.
39. A raindrop of mass 1 g falling from a height of 1 km hits the ground with a 3
speed of 50 ms-1 calculate
I. The loss of P.E. of the drop
II. The gain in K.E. of the drop
OR
A body of mass 0.5 kg travels in a straight line with velocity v = ax 3/2 where a =
5m-1/2s-1. What is the work done during its displacement from x = 0 to x = 2 m.
40. Derive the expression for the electric potential at any point along the axial line 3
of an electric dipole.
OR
Derive the expression for the potential energy of an electric dipole of dipole
moment 𝑝⃗ placed in a uniform electric field 𝐸⃗.
41. State and explain Brewster’s law with the help of a diagram. The value of 3
Brewster angle for a transparent medium is different for light of different
colours. Give reason
42. (a) Draw the circuit arrangement for studying the V-I characteristics of a p-n 5
junction diode in (i) forward and (ii) reverse bias. Briefly explain how the
typical V- I characteristics of a diode are obtained and draw these
characteristics.
(b) Explain the I V characteristics of Light emitting diode.
OR
What are energy bands in solids? How are they formed? How do we classify
solids as conductor semiconductors and insulators on the basis of energy bands?
43. (a) State Lenz’s law. “The Lenz’s law is a consequence of the principle of 5
conservation of energy.” Justify this statement.
(b) Deduce an expression for the mutual inductance of two long coaxial
solenoids but having different radii and different number of turns.
OR
Using phasor diagram for a series LCR circuit connected to an ac source of
voltage E = Em cos ωt,derive the relation for the current flowing in the circuit
and the expression for resonance frequency.
Draw a plot showing the variation of the peak current (im) with frequency of the
a.c. source used.
9
Physics
Marking Scheme
SECTION – A
(Q.No. 1 to 16) MCQs of 1 marks each
S.no Correct Explanation Marks
option
1. (i) C (i) Since the kite is at rest.net force acting on it zero 1
OR OR
(ii) A (ii) N is the unit of force
=ma
=kg m s-2
2. (i) A (i) W = mg 1
=2×9.8 = 19.6 N
OR OR
(ii) D (ii) Mg –Fa = ma
Mg –Fa =0.20×6 =1.2
Fa= Mg -1.2
=1.96 -1.2 = 0.76 N
3. (i) A 1
OR
(ii) C
4 (i) C (i) Cohesion and adhesion body decide the angle of contact and 1
also the magnitude and direction of the rising force
OR OR
(ii) C (ii) Equation of continuity
Av = constant
5 A Excess Pressure ∝ 1
6 A The branch of physical science is concerned with the relationship 1
between heat, and other forms of energy like mechanical,
electrical, chemical energy, etc.
7 (i) A (i) Thermodynamics is primarily based on a set of four rules that 1
are universally applicable when applied to systems that fall within
their respective limitations. They are as follows:
Zeroth law of thermodynamics
First law of thermodynamics
Second law of thermodynamics
Third law of thermodynamics
OR OR
(ii) D (ii) Open system, Closed system, Thermally isolated system all are
types of thermodynamic system.
8 B 1
9 B Frequency of the wave depends upon source, hence do not change 1
with change in medium.
10
10 (i) C Beat frequency = |1 - 2| = | 1000 – 1004 | = 4 1
OR OR
(ii) A = = (150)= 225 Hz
11 C 1
12 B 1
13 (i) B 1
OR
(ii) B
14 D 1 1
𝛿 = (𝜇 − 1)𝐴 = (1.6 − 1) = 0.3 = 18′
2
15 D 1
16 (i) B 1
OR
(ii) B
(Q.No. 17 to 28) Objective questions of (1X2=2 marks) each
17 Attempt any two parts 1X2
(i) (c)
(ii) (d)
(iii) (b)
(iv) (b)
18 Attempt any two parts 1X2
(i) isolated
(ii) large
(iii) force
(iv) linear momentum
19 (i) (c) 1X2
(ii) (c)
(ii. Explanation: According to equation of continuity:𝐴 𝑣 = 𝐴 𝑣
𝜋𝑟 𝑣 = 𝜋𝑟 𝑣
(20)2×5 = (1)2×𝑣
2000 mm/s = 𝑣
𝑣 = 2 𝑚/𝑠 )
20 Attempt any two parts 1X2
(i) Less than
(ii) increase
(iii) transversal/stationary
(iv) Doppler
21 (i) – R, (ii) – P 1X2
22 Attempt any two parts 1X2
(i) Law of conservation of charge
(ii) Law of conservation of energy
(iii) potentiometer
(iv) Wheatstone bridge
11
23 (i) FALSE 1X2
(ii) FALSE
24 (i) - Q, (ii) – S 1X2
25 Attempt any two parts 1X2
(i) refraction
(ii) violet
(iii) emergence
(iv) 𝑓𝑜𝑢𝑟𝑡ℎ
26 (i) - S, (ii) – Q 1X2
27 Attempt any two parts 1X2
(i) FALSE
(ii) FALSE
(iii) FALSE
(iv) TRUE
28 (i) – P, (ii) – Q. 1X2
SECTION – B
S. Marks
NO. Explanation
29 There
here is greater concentration of electrons in the nn-region of the semiconductor 1
crystal and of holes in the p--region.
region. Because of this, electrons tend to diffuse to the
p-region and holes to the n-region
region and recombine. Each recombination eliminates a
hole and a free electron. This results in creation of positively and negatively charged
ions near the junction in n and p regions, respectively which a narrow region near the
junction is depleted in mobile charge carriers. It is about 0.5 μm thick and is called
the depletion region.
1
2
30
2 2
12
OR
As the frequency of the incident light increases, the maximum kinetic energy of the
photoelectrons also increases,, therefore stopping potential will be more when radiation of
greater frequency (v1) is incident on the metal surface.
31 The process in which two nuclei of lighter elements (such as hydrogen) fuse to form 1 2
a heavier nucleus (such as helium), and a neutron is emitted, is called nuclear fusion.
A large amount of energy is released in this process.
𝐻 + 𝐻 → 𝐻𝑒 + 𝑛 + 𝑒𝑛𝑒𝑟𝑔𝑦
1
32
13
OR
Expression for the magnetic field due to a long solenoid:
Let us take a rectangular loop abcd as shown in Fig and let i be the current flowing
through solenoid.
Along the path ab, the magnetic field is uniform. Hence, for this path 𝐵⃗ . 𝑑𝑙 𝑑 ⃗ = Bl.
Along the paths cd, as the magnetic field is weak it may be taken as zero. Hence, for
this path 𝐵⃗ . 𝑑𝑙⃗ = 0. The two short sides bc and da also do not contribute anything to
𝐵⃗ . 𝑑𝑙⃗ as B is either zero (outside the solenoid), or perpendicular to 𝑑𝑙⃗ (inside the
solenoid).
If n be the number of turns per unit length along the length of the solenoid, then the
number of turns enclosed by the rectangular loop of length l is nl. If each turn of the
solenoid carries a current i, then the total current threading the loop is n li.
Hence,, from Ampere’s circuital law,
∑𝐵⃗ . 𝑑𝑙⃗ =μo(n l i)
or Bl = μo(n l i)
B = μoni
35 1
V1 =
V2 =
V = v 1 + v2
= + ………….(1) ½ 2
If the equivalent capacitance is C,
V= ……………..(2)
From equation (1) and (2):
1 1 1 ½
= +
𝐶 𝑐 𝑐
OR OR
Expression for capacitance of parallel plate capacitor.
Let ‘A’ be the plate area and‘d’ be the separation between the plates of a parallel ½
plate capacitors. Suppose that these plates acquire +q and –q
q charge when the
14
capacitor is fully charged. These charges set up a uniform
electric field 𝐸⃗ between the plates.
If σ is surface
ace charge density on either plate, the magnitude
of electric field between the plates is given by
𝜎 𝑞𝐴
𝐸= = ½
𝜀 𝜀
and the potential difference between the plates is given by
V = Ed = 𝑑 ½
Hence, capacitance of a parallel plate capacitor
C= =
½
36 Wavelength of sound waves varies from 15m to 15mm respectively. The size of
obstacles (almost) becomes comparable to wavelength of sound, so diffraction of 1 2
sound wave takes place easily. But the wavelength of visible light varies from 0.4 to
0.7 micron which is very small. So, the size of most of the slits or obstacles are not
comparable withith wavelength of visible light, due to this diffraction of light cannot
take place. So, the diffraction is a very common phenomenon in case of sound, but
not that common in case of light. 1
OR OR
For observing interference of light, the sources of light must bbee coherent. When the 1
light waves are coming from two incoherent sources, the points on the screen where
two crests or two trough superpose at one instant to produce brightness may receive,
at the other instant, the crest of the wave from one source and tro
trough
ugh from the other 1
and produce darkness. Thus, the whole screen will appear uniformly illuminated if
the sources are not coherent.
37 Ip = 600 ½
n = tan ip ½
= tan 60 ½
=√3 ½ 2
38 Full Wave Rectifier 1
Working: For full wave rectifier we use two junction diodes.
Suppose during first half cycle of input ac signal the terminal S1 is positive relative
to S and S2 is negative relative to S, then diode D1 is forward biased and diode D2
is reverse biased.. Therefore current flows in diode D1 and not in diode D2. The
direction of current due to diode D 1 in load resistance RL is directed from A to B.
In next half cycle,, the terminal S1 is negative relative to S and S2 is positive relative
to S. Then diode D1 is reverse biased and diode D2 is forward biased.. Therefore
current flows in diode D2 and there is no current in diode D1. The direction of
current due to diode D2 in load resistance is again from A to B.. Thus for input a.c.
signal the output current is a continuous series of unidirectional pulses.
15
(Circuit of Full Wave rectifier)
1
3
39 Given m=1g=10−3kg
m=1g=10-3kg 3
h=1km=1000m
g=10ms−2
v=50ms−1 1
(1) Loss in Potential Energy of drop
=mgh=(10-3kg)(10ms−2)(1000m)
=10J 1
(2) Gain in Kinetic Energy of drop
=1/2mv2=1/2×(10−3kg)(50ms−1)2
=1.25J 1
OR OR
given : v = ax3/2 , acceleration = dv/dt =3/2ax1/2dx/dt 1
16
40 1
Let P is an axial point at a distance of r from the centre of dipole. The electric
potential at point P is given as below.
V=V1+V2
V1 and V2 are respectively the potential due to + +q and -q charges
V= +
3
1
=
1 2𝑝
=
4𝜋𝜀0 𝑟 − 4𝑎
17
1
42 (a) The circuit arrangement and their corresponding V–I characteristics of a diode are 1 5
shown in Fig. (1) and (2).
). For different values of voltages the value of current is
noted. A graph obtained between V and I is the characteristics of the diode.
Fig. 1
Fig.2
From the V-I characteristic of a junction diode it is clear that it allows current to pass
only when it is forward biased.
(b) In a light emitting diode, when the forward current is low, the intensity of the
emitted light is also low. As the forward current increases, the intensity of emitted 1
light also increases and attains a maximum value, again as a result of increase in
forward current, the intensity of light decreases. The LED is oriented in such a
way that the efficiency of the light emitted is maximum. The IV cha characteristics
racteristics of
LEDs are similar to those of SI junction diodes. But the threshold voltage is very
high and its value is different for each color of LED.
1
OR
Or
In solids, very large number of atoms (typically 10 23 atoms per cm3) come together
to form crystals. If N atoms interact corresponding to each of the energy states, 2N 2
18
energy states are created. All these energy states are so close to each other (typically
ΔE~10–23 eV) that we cannot practically discriminate between them. This quasi
continuous distribution of energy states, which are though separate but practically
indiscriminable, is called energy band. The process of interaction of energy states
(and thereby energy band formation) starts from outer unfilled energy states and then
proceeds to valence level. The band formed of unfilled energy levels is called
conduction band and the one formed of filled valence levels is called valence band. 3
The relative position of these bands, at equilibrium separation, dete determines
rmines the
conduction characteristics of a solid.
If in a solid at equilibrium separation, the conduction band (CB) and valence
bands (VB) overlap as it happens in case of metals the material is conductor
If at equilibrium separation the conduction band is completely empty, valence
band is completely full and there is a small band gap (ΔE ≤ 3 eV) between the
highest level of valence band and lowest level of conduction band, called a
forbidden energy gap, the solid is a semiconductor.
If at equilibrium separation,
ration, the CB is completely empty, VB is completely filled
and there is a large band gap (ΔE > 3 eV) the solid is an insulator
insulator.
43 Lenz's law: According to this law “the direction of induced current in a closed 1
circuit is always such as to oppose the cause that produces it.” For example: When
the north pole of a coil is brought near a closed coil, the direction of current induced
in the coil is such as to oppose the approach of north pole. Fo
Forr this the nearer face of
coil behaves as north pole. This necessitates an anticlockwise current in the coil,
when seen from the magnet side
Similarly when north pole of the magnet is moved away from the coil, the direction
of current in the coil will be such as to attract the magnet. For this the nearer face of
coil behaves as south pole. This necessitates a clockwise current in the coil, when
seen from the magnet side.
Thus, in each case whenever there is a relative motion between a coil and the 1
magnet, a force begins to act which opposes the relative motion. Therefore to
maintain the relative motion, a mechanical work must be done. This work appears in
the form of electric energy of coil. Thus Lenz’s law is based on conservation of
energy.
19
(b) Suppose two co-axial
axial solenoids S1 and S2 of radii r1 and r2 , number of turns N1
and N2 each of length ‘l’
Suppose I 1 is the current in outer solenoid; magnetic field at the axis, B1 = 𝜇 𝑛 𝐼
where n1 = number of turns/meter of outer solenoid.
Magnetic flux linked with inner solenoid ((S2 ) 5
𝜙 = (𝑁 )𝐵 𝐴 = 𝑁 (𝜇 𝑛 𝐼 )𝜋𝑟
Mutual inductance of two solenoid system
1
M= = 𝜇 𝑛 𝑁 𝜋𝑟
𝑁 1
=𝑛
𝑙
𝜇 𝑛 𝑁 𝜋𝑟
=𝑀
𝑙
OR
1
OR
20
21
وساانلےماکومنہن
براےئرئنیسڈنکیسریوکرس
اردو 306
ت ت
لکربمن011 وق 3 :ےٹنھگ
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Page | 1
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ت
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.cااسفہنےہ۔
.dزنطومراحےہ۔
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ت ت ت
0 وہوکؿیساطقےہوجاناؿےسلکشمبرنیاکؾااجنؾدولایتےہ؟ وساؽربمن:9
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ت
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.aیئن ک
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رکی
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رکی
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0 ریماسمینیازاخوھکنںںیم وساؽربمن:01
اسرییتسمرشابیکیسےہ
.aہیرعشاغلاکےہ۔
.bہیرعشریماکےہ۔
.cہیرعشومنماکےہ۔
.dہیرعشاحیلاکےہ۔
کیا
وکلہےنےسیکادنازہاگل کیاہکینتکراتزگریکچےہ؟
.aڑھگیدےنھکیےس۔
.bاستاتسروںےکوھگےنمےس۔
.cروینشوہےنےس۔
.dاخامسؿںیماچدنےکہنوہےنےس۔
0 یایایجڑگنلاےتوہےئویکںلچرےہےھت؟ وساؽربمن:01
.aاسےکی ٔاوںںیمفیلکتیھت۔
.bدادایجامیبرےھت۔
.cاسےکوجےتوھچےٹےھت۔
.dدادااجؿوبھجرکڑگنلارکلچرےہےھت۔
کیا
Page | 8
وھبالےکرھگےساغیوہاجےنرپام کیااکایکاحؽوہا؟
.aام کیایتخیچریہاوریاؽونےنچیگل۔
.bام کیامگمصوہیئگ۔
.cام کیارھگےکاکؾںیمرصموػوہیئگ۔
.dام کیایالگوہیئگ۔
1 ایٹلوہںیئگسدتریبںیھچکہندواےناکؾایک وساؽربمن:19
داھکیاسامیبریدؽےناخچراکؾامتؾایک
لک
0 ( )iiiاغلےکدہعےکیسکشاکراکیاؾ ھیے۔
لک
0 ومنماکوپرایاؾ ھیے۔ ()iv
0 ( )vیادشاہاہبدرشاہایکصلخترکےتےھت؟
لک
0 ( )viدازااغلاکوپرایاؾ ھیے۔
0 ( )viiہیبشت کسےےتہکںیہ؟
0 ( )viiiہیبشتاورااعتسرےںیمایکقرؼےہ؟
لک
0 شلمودخوؾیکمظناکاوناؿ ھیے؟
اخپےکاصنبںیم ا ()ix
لک
اورپدےیوساالتںیم نیہ1وساالتےکوجایات ھیے۔
لک
10 زغؽےکوغلیینعم ھیے۔ ()i وساؽربمن22
( )iiاخپےکاصنبںیمرادنجرھگنسدیبیاکوکؿاسااسفہنشالمےہ؟
ک
ارٹننےکذرہعیاخپاغیپؾسکرطحےتجیھبںیہ؟ ()iii
Page | 10
’’یاچہناجےناخنگنڑیٹاھ‘‘ایکےہ؟ ()v
لک
( )viiرسحتوماہیناکوپرایاؾ ھیے۔
( )viiiرسحتےناینپزغولںںیموکؿاسرگادیاایکےہ؟
ت
ابمہغلشاکریںیمویکںاامعتسؽوہیاےہ؟ ()ix
رسحتےکوبحمباوراسیکتبحمںیمایکزیچدیاھیئدیتیےہ؟ ()x
رسدیساکالصیاؾاتبےی۔ ()xi
ت ت
امازیلعیاجےکوہشمرڈراےماکیاؾاتبےی۔
ک ()xii
( )xiiiاربکاہلاخیادیےناینپمظنیئن ک
ذہتیںیمایکاغیپؾد کیاےہ؟
( )xivاغلرشوعںیمایکصلخترکےتےھت؟
اورپدےیےئگوساالتںیمےس نیہدسوساالتےکوجایاتدےیجی۔
ہنےگلوشؼںیمسجےکوھبکشاقئیککلپ وپاھچںیم،وکؿےہ؟وبیلہکںیموہںاغلف
کیا
Page | 11
ت
اچاہرکںیوساؽہپرشامےکرہےئگ ےچنہپ رق کیوفجوتھگراےکرہےئگ
اچدررسپےکرہچےےسرساکےکرہےئگ ریغتےسرگقفوہارھتاےکرہےئگ
کیا
لک
1 رپاتونٹ ھیے
وسداےکاحالتزدنیگ ک وساؽربمن:25
کیا
لک ت
رپاتونٹ ھیے۔
دازاالسمیلعدریبےکاحالتزدنیگ ک
لک
1 رپمیدنچےکاحالتزدنیگرپ کاتونٹ ھیے۔ وساؽربمن:26
لک ت
1 ودخوؾیحمادلنییکمظن’’اچدنیاروںاکنب‘‘اکداکریایخؽ ھیے۔ وساؽربمن:27
لک
1 مؔےکاحالتزدنیگرپ کاتونٹ ھیے۔
کر وساؽربمن:28
2 یشنمرپمیدنچاکوپرایاؾ ک
اتبی،اسھتیہاؿیکنسادیاشئبکیکےہ۔ وساؽربمن:29
لک
2 ’’ےبریظن‘‘ےکینعمایکںیہ؟ےبریظناکاامعتسؽدوولمجںںیم ھیے۔ وساؽربمن:30
لک
2 ہیبشت کسےےتہکںیہ،وکیئدواثمںیلدےرک ھیے۔ وساؽربمن:32
Page | 12
اسرصمہعںیم’اکؾامتؾوہیا‘ایکےہ؟
اسرصمہعںیم’وخبوہا‘ایکےہ؟
ت
2 اتبیےہ؟
دیصقہںیمشاکردمموحیک ن نوخویبںوک ا وساؽربمن:35
ت
2 وہیےہ؟
داہیثںیمدیماؿرکالبںیم ریہواکایکروؽ ا وساؽربمن:36
لک ت
2 ’’اچدنیاروںاکنب‘‘سکرطحیکمظنےہ؟دووصخایصتیھب ھیے۔ وساؽربمن:37
ہصح(افل)
اایتخری 3A
1 ()ivاحصتفیکرعتفیےیجیک۔
لک
1 ()viویپمکرٹیکرعتفی ھیے۔
1 ()viiاحصتفاورروپرٹںیمقرؼ ک ک
اتبی۔
لک ت
1 ()ixطخواتکییکرعتفی ھیے۔
Page | 13
1 ()xادارہیاوررسیخںیمقرؼ ک ک
اتبی۔
اورپدےیےئگوساالتںیمےس نیہ1وساالتےکوجایاتدےیجی۔
Page | 14
0 ( )ivاحصتفےکدیماؿںیمسکرطحاج کیااجہاتکےہ؟
اورپدےیوساالتںیمےس نیہ1وساالتےکوجایاتدےیجی۔
لک ت
ذلیںیم کاتوساؽےکاچروجابدےیےئگںیہ۔درسوجبنچرکاینپاکیپںیم ھیے۔
0 احصتفسکرطحاکہشیپےہ؟ وساؽربمن:40
.aاحصتف کاتزعمزاوریاابرہشیپےہ۔
.bاحصتفےباکرہشیپےہ۔
.cاحصتفیسکرطحیکزعتںیہنےہ۔
.dاحصتفںیمتہبہسیپےہ۔
کیا
روپرٹیکومعامًینتکںیمسقوہیتںیہ؟
.aکات
.bدو
.cنی
.dیاچن
0 آجےکدورںیماحصتفےکدیماؿںیمونرکییایاآاسؿ؟ وساؽربمن:41
.aںیہن
.bیالکلںیہن
Page | 15
ت
.cیاکسںیہ
.dارگزیاؿاوروموضاعتاکملعااھچےہوتونرکیےنلمںیمآاسینےہ۔
کیا
روپرٹیکسےسبریوخیبےہ:
ت
.aوطال
.bرعموتیض
.cااصتخر
.dوموضیع
لک
4 وساؽربمن :42احصتفاورروپرٹیکرعتفی ھیےاوردوونںںیمقرؼاتبےی۔
ہصح(ب)
اایتخری3B
Page | 17
ت
وہیےہ۔
.bدرایمؿںیم ا
.cامن کیاںہگجدیاجیتےہ۔
ت
وہیےہ۔
.dےلہپہحفصرپ ا
کیا
ارٹکیلوتڈیم کایںیمینتکںیمسقںیہ؟
.aکات
.bدو
.cنی
.dاچر
4 وساؽربمن:42رچیفیکوصخایصتےس لیےساتبےی۔
Page | 18
امرگنکامیکس
براےئرئنیسڈنکیسری
(اردو )306
1 رغمیب ک
ذہتی وجابربمن:1
ت
1 چوکچر کیایکزیاؿےسادارکا کیاےہ۔ رھگوںںیماناونںےکدرایمؿوہےنوایلیات ک وجابربمن:1
کیا
Page | 19
( )dوپریداینںیمدنہواتسین ک
ذہتیاکوبؽیاالوہاگ۔
( )cرغمیب ک
ذہتیےکایعمروک وجابربمن:02
کیا
( )aیلعت
کیا
( )bونثمییکوہجےس
ت
1 ( )bالعماک وجابربمن:01
کیا
ت
0 ()bاامؾنیسحاےنپےیلیسکےکاسےنماہھتںیہنالیھپکس ےھت۔
ت
0 ()cرشفیولوگںیکدقروزنملںیمیمکاخےئیگ۔ وجابربمن:01
کیا
()bاںیھندبتیلیاکااسحسںیہنوہاگویکںہکاوھنںےنایساموحؽںیماخںیھکنوھکیلںیہ۔
کیا
()cیسکےشوکیسکدورسیےشےسثام تلرکےنوک
Page | 20
0 ()bریتاک۔ وجابربمن:01
کیا
()bاستاتسروںےکوھگےنمےس
کیا
()aام کیایتخیچریہاوریاؽونےنچیگل۔
0 ()iiiدتریبںی
0 ()ivلمکموطررپبریادوہاجیا
0 ()vعلطم
0 ()iiابنہےکودعےوک
0 ()iiiںیھمت
Page | 21
ت
()iدیصقہیادشاوہںیکشاؿںیماھکلاجیااھت،دریارمتخوہےتیہدیصقےاکزواؽوہایگ۔ وجابربمن:21
()iiویکںہکاسینودریبیکداہیثاگنریےکدعبوکیئیھبشاکراسفنصںیموکیئامکؽںیہندیاھیا کیا۔
0 ()iiiومنم
0 ()ivومنماخںومنم
0 ()vرفظ
0 ()viادساہللاخں
()viiiہیبشتںیمیسکےشوکدورسیےشےسثام تلرکےتںیہجہکااعتسرےںیمدیسےھیہاسےشاکیاؾےتیل
0 ںیہسجےکذرہعیاسیکاثمؽوہیتےہ۔
ت
0 ( )ixاچدنیاروںاکنب
0 ()xیئن ک
ذہتی
0 ()xرسحتےکوبحمباوراسیکتبحمںیمزنیمیککہمےہ۔
ارگنبری ک
ذہتییکادناھددنھدیلقتاوراسےکابراتاکایبؿےہ۔ 0 ()xiiiیئن ک
ذہتیمظنںیم ک
ہیدنبوسداےکدیصقےےسایلایگےہ۔ وجابربمن:23
ک ت
اہنیوخوصبرتاور ےئنادنازںیمشیپایک ےہ۔دیصقےیک رشتحی:ہیااعشربیبشت(دیہمت)ےکںیہ۔اےسشاکرےن
ت ت ت
رشواعتوہاسرطحرکےتںیہہکرجفےکوقجوہیکلہدنینںیماھتوتاسےنیسکوکاےنپ رق کیوسحمسایک،اسےن
اخںیھکندنبےیکوہےئیہوپاھچ،متوکؿوہ!اسےنوجابد کیا،بریریحتیکیاتےہہکمتےھجماچہپےتنںیہن۔ںیموہزیچ
ت
وہں،سجیکبلطولوگںوکےبنیچریتھکےہ۔ریمیاچہیکوہجےسہنیسکوکدنیناخیتےہاورریمیوخاشہہرصخش
ےکدؽںیموہیتےہ۔ریمایاؾوخیشےہ۔
کیا
Page | 23
ت
ہیدنبدازاالسمیلعدریبےکداہیثےسایلایگےہ؟
رشتحی:اسدنبںیمشاکرےنرضحتاامؾنیسحیکوخدداریاورزعت سفنوکایبؿایکےہ؟جیلعارغصےکےیلاامؾ
ت
رب یک وفج ےک رق کی
رب یک وفج ےک یاس ےل اجںیئ،ج اخپ کب ک ذ
نیسح یاین ےنیل ےئگ وت اؿ ےس اہک ایگ ہک اخپ اےس کب ک ذ
ےچنہپاوروساؽ رکیااچاہوتوخدداری اورریغت یک وہج ےس رشؾ اسروہےئگ اوررہچے اکرگ اڑایگ۔اوھنں ےن ےچب ےک
رہچےےسڑپکااٹہرکرضحتیلعارغصاکایپسیکدشتےسبذاھؽرہچہاؿولوگںےکاسےنمرکد کیا۔
دیصقہدصقےسانبےہ،دصقےکینعماگڑےھوگدےےکںیہ۔ وجابربمن:24
ت ت
دیصقےےکاچراےئ ربکیکبی -بیبشت ،ک
رگبر،دمح کایذمم،داع کاینسحبلط
کیا
داہیثریاظفلےسانبےہ،سجےکینعم،رویا،اممترکیا۔دااددوہمظنےہوجیسکصخشےکداےنرپیھکلاجےئ۔
ت
اچراےئ ربکیکبی:رہچہ،رسایا،رتصخ،اخدم،رچر،ج،اہشدت،نیب۔
وسدادیصقہےکوہشمرشاکرںیہ۔اسرطحاخپےکاحالتزدنیگرپونٹاھکلاجےئاگ۔ وجابربمن:25
کیا
ت
دازاالسمیلعدریباردوداہیثےکوہشمرشاکرںیہ،اؿےکاحالتزدنیگرپیھب کاتونٹاھکلاجےئاگ۔
رپمیدنچااسفہناگنریںیمامن کیاںاقمؾرےتھکںیہ۔اؿےکاحالتزدنیگرپیھب کاتونٹاھکلاجےئاگ۔ وجابربمن:26
ک ت ت
اہنیوخوصبرترظنماگنرییکےہ۔اسرطحمظناکداکری ودخوؾیحمادلنیےنمظن’’اچدنیاروںےکنب‘‘ںیم وجابربمن:27
ایخؽاھکلاجےئاگ۔
ت
ریمزغؽںیمجذاےئنخسےساجےناجےتںیہ۔ اؿیکرشواعیتزدنیگتہبرپاشیوینںںیمزگری۔یامہزغؽںیمریم وجابربمن:28
ےنتہبوخوصبرتزغںیلیھکلںیہ۔
ت
وجابربمن :29یشنمرپمیدنچاکیاؾدھییتراےئاھت۔ 0111ںیمادیاوہےئ۔
ےبریظنےکینعمںیہ،سجیکوکیئاثمؽںیہن۔ وجابربمن:30
اغلیکتیصخشےبریظنےہ۔
Page | 24
ت
یاجلحمےبریظنشاہاکرےہ۔
وخیشےکااعتسرےںیہ۔ وجابربمن:31
اخزادییکحبصاکااعتسرہےہ۔
یسکزیچوکدورسیزیچےسجاشمتہبدیاجیتےہوتاےسہیبشتےتہکںیہ۔ وجابربمن:32
اساکرہچہاچدناسیجےہ۔
اسےکوہیالگبیکرطحںیہ۔
’اکؾامتؾوہیا‘ کاتاحمورہےہ۔ وجابربمن:33
اساکبلطمہیےہہکقشعںیمایسیوچٹیگلہکسھچکمتخوہایگ۔
’وخبوہا‘۔احمورہےہ۔سجےکینعمںیہااھچیہوہا۔ وجابربمن:34
ت ت
وجابربمن :35دیصقےںیمشاکراےنپدمموحےکرنہنہساوراؿیکاجشع،جرکےناکرطہقی وریغہاتبیاےہ۔
ت
رکیےہ۔ کات کاترکےکاےنپولوگںوکجےک
زعبروااقربیکافحتظ ا وجبربمن :36داہیث ںیمدیماؿرکالبںیمریہو،ےلہپاےنپ ک
ت
اجیےہ۔
ےیلاتجیھبےہاوررھپدعبںیموخددیہشوہ ا
ت
وجابربمن :37اچدنیاروںاکنباردومظنےہ۔اخزادمظنںیماقہیفیکیادنبییکاجیتےہ۔
ہصحافل
اایتخری3A
0 ادارےیںیمیسکاخصوموضع ک
رپدمبرراےئداتیےہ۔ ()i وجابربمن38
ت
0 ( )iiرسیخیسکیھبربخ،ومضمؿ،ایبؿاوروموضعیکرصتخمبرنیلکشوکےتہکںیہ۔
ک ت ت
دماعاوراکشیوہیتکسےہنکیلدرتفیطخںیمدےفقلعتمگنٹیمےکیارےںیم ( )iiiدروخاسںیمکرض
وہہاتکےہ۔
ت
( )ivاحصتفںیمرپی ک
،ربذوی،یٹویینعیارٹکیلوسکنڈیم کیاےسقلعتموہیاےہ۔ 0
ت
0 ک
ربخوکرحتبرایکاجیاےہ،اےسروپرٹےتہکںیہ۔( )vیسک
Page | 25
0 ک
ویپمکرٹاتایسینیشمےہوجاسحبواتکبےسقلعتماکؾرکیتےہ۔ ()vi
( )viiاحصتفرپیڈیم کیااورارٹکیلاسکنڈیم کیاوکےتہکںیہجہکروپرٹیسکربخےکایتررکےنوکےتہک
0 ںیہ۔
( )viiiدرتفوںںیموجونٹروزداہےکاکؾاکجںیمےھکلاجےتںیہاےسدرتفیونٹےتہکںیہ۔0
ت
0 ()ixیجن کیارساکریوطخطوکطخواتکیےتہکںیہ۔
0 ()xادارہیںیمیسکاخصوموضع ک
رپدمبریکراےئوہیتےہہکبجرسیخیسکربخیکاخصاچہپؿوہیتےہ۔
اورپدےیےئگوجایاتںیمےس نیہیاچنوساالتےکوجایاتدےنیںیہ۔
0 ()iاحصتف کاتزعمزاوریاابرہشیپےہ۔ وجابربمن:39
0 ()iiویپمکرٹےسEmailوریغہےجیھباجےتںیہ۔
0 ()iiiویپمکرٹےسوہےنواےلاکومںںیم کاتاکؾEmailیھبےہ۔
ت ت
()ivیمیلعتایلقےکاسھتزیاؿہپدقرتاورامتؾوموضاعترپولعمامتوہےنرپاسدیماؿ
0 وکانچاجہاتکےہ۔
ت
0 ()vاابخرںیمرسیخارگایھچوہوتاابخراکاقریوپرااابخرڑپےنھرپاخامدہوہاجیاےہ۔
ت
0 ()viاابخرںیمادارہییکاتیمہہیےہہک ک
دمبروموجدہاحالترپاینپراےئشیپرکیاےہ۔
()viiجوکیئربخاسےنماخیتےہوتاسیکلمکمولعمامتاحلصرکےکاسےکیارےںیم
ت
0 اھکلاجیاےہ۔
0 ()viiiروپرٹایتررکےنواےلوکروپررٹےتہکںیہ۔
اورپدےیےئگوساالتںیمےسوکیئاچروجایاتیہدںی۔
)(A وجاب:40
کیا
)(D
Page | 26
)(D وجابربمن:41
کیا
)(B
احصتفیکرعتفیہیےہہکرپیڈیم کیااورارٹکیلاسکنڈیم کیاےسقلعتمینتجزیچںیاخںیئوہساحصتفںیمامشروہیت وجابربمن:12
1 ںیہجہکروپرٹ کاتاخصزیچےکےیلایتریکاجیتےہ۔
کیا
ہصح(ب)
اایتخری3B
0 ()iیسکاخصواہعقےکروامنوہےنوکربخےتہکںیہ۔ وجابربمن:38
ت
0 ()iiیسکاخصوموضعرپاھکلاجیاےہ۔
0 ()iiiذرےعیےکوہےتںیہ۔
ت
0 ()ivیسکےشوکےنچیبیکرغضےساساکااہتشرایترایکاجیاےہ۔
0 ()vارٹکیلوسکنڈیم کیاںیم ک
ربذوئیاوریٹوی،ملفوریغہوہےتںیہ۔
0 ()viیسکاخصتیصخشےسجوگتفگیکاجیتےہوتاےسارٹنوویےتہکںیہ۔
ت
0 ()viiربخیسکواہعقےکروامنوہےنرپاورااہتشریسکےشیکریہشتےکےیلاھکلاجیاےہ۔
0 ()viiiارٹنووییک نیںیمسقںیہ۔
0 ()ixربخیسکواہعقےکروامنوہےنرپاورارٹنووییسکتیصخشےسوگتفگوکےتہکںیہ۔
0 ()xارٹکیلاسکنڈیم کیاںیمملفاخیتےہ۔
ت
0 ()iرچیفڑپ ھرکفطلاخیاےہ۔ وجابربمن:39
ت
0 ()iiرچیفاابخرںیمہحفصاوؽرپوہیاےہ۔
ت ت
()iiiرچیفےکےیلااصتخررضوریےہاورےتھکلوقہیایخؽوہہکسکرطحےکاقریےکےیلاھکلاجراہےہ۔1
Page | 27
ت ت
()ivرچیفایتررکےتوقسےسز کیادہدایھؿرانھکاچےیہہکیسکیھبےقبطیکدؽاخزاریہنوہاورربخینسنس
1 زیخہنوہ۔
ت
()vرچیفںیم کاتیہیاترپوپریوتہجرصػیکاجیتےہینعی کاتیہایخؽوکریاھاورااھبرااجیاےہ۔0
()viاخجےکدورںیمربخوںیکاتیمہتہبز کیادہوہیئگےہویکہکنوپراامسجوسلشڈیم کیااورامتؾدورسی
ت ت
0 ڈیم کیاےسہروقکلسنمراتہےہ۔
ت ت
()viiارٹنوویےتیلوقاسیاتاکاخصایخؽرانھکاچےیہہکسجتیصخشاکارٹنوویایلاجراہےہاسےکیارےںیم
0 وپریولعمامتوہیناچےیہ۔
0 ( )viiiاخجےکدورںیمربخیکاتیمہز کیادہوہیئگےہویکہکنہرصخشابربخوںےسڑجاےہ۔
)(A وجابربمن:40
کیا
)(D
)(B وجابربمن:41
کیا
)(D
رچیفےکلہےلھپادنازںیماخاسؿزیاؿںیمیسکوموضعرپرصتخمایبہینومضمؿاھکلاجےئ۔رچیفیکسےسامہوخیباس وجابربمن:12
ت ت
اکااصتخرےہ۔رچیفےتھکلوقہرمسقےکاقریاکایخؽرانھکاچےیہ۔رچیفںیمدؽیپسچبراھےنےکےیلیھبکیھبکڈراامیئ
تیفیکیھبادیایکاجیتےہ۔
Page | 28
Sample Question Paper
Chemistry
(313)
Time: 3 hr. Maximum Marks: 80
Note:
i. This question paper consists of 43 questions in all.
ii. All questions are compulsory.
iii. Marks are given against each question.
iv. Use log tables if necessary.
v. Section A consists of
a. Q.No. 1 to 16 – Multiple Choice type questions (MCQs) carrying 1 mark each. Select and
write the most appropriate option out of the four options given in each of these questions. An
internal choice has been provided in some of these questions. You have to attempt only one
of the given choices in such questions.
b. Q.No. 17 to 28 – Objective type questions. Q.No. 17 to 28 carry 02 marks each (with 2 sub-
parts of 1 mark each). Attempt these questions as per the instructions given for each of the
questions 17 – 28.
v. Section B consists of
a. Q.No. 29 to 37 – Very Short questions carrying 02 marks each to be answered in the range of
30 to 50 words.
b. Q.No. 38 to 41 – Short Answer type questions carrying 03 marks each to be answered in the
range of 50 to 80 words.
c. Q.No. 42 and 43 – Long Answer type questions carrying 05 marks each to be answered in the
range of 80 to 120 words.
Part-A
Q. No. Questions Distribution of
Marks
Q.No. 1 to 16 are the multiple choice questions of 1 mark each:
An internal choice has been provided in some of these questions. You have to attempt only one of the given
choices in such questions.
1. Which of the following is responsible for the mass of an atom? 1
A. Only protons.
B. Only neutrons.
C. Neutrons and protons.
D. Protons and electrons.
2. Increasing order (lowest first) for the values of e/m (charge / mass) for 1
electron (e), proton (p), neutron (n) and α-particle (α) is:
A. e, p, n, α
B. n, p, e, α
C. n, p, α, e
D. e, n, α, p
3. (i) The ionization enthalpy of hydrogen atom is 1.312×106 J mol-1. The 1
energy required to excite the electron in the atom from n = 1 to n = 2 is?
A. 8.51 × 105 J mol-1
B. 6.56 × 105 J mol-1
C. 7.56 × 105 J mol-1
D. 9.84 × 105 J mol-1
OR
(ii) All noble gas molecules are………..
A. Monoatomic
B. Diatomic
C. Triatomic
D. Both I and II
4. How many number of orbitals could be present in the following set of 1
quantum numbers, n = 3, l = 1, m1 = 0?
A. 3
B. 1
C. 4
D. 2
5. (i) The orientation of atomic orbitals is depending on their……… 1
A. Spin quantum number
B. Magnetic quantum number
C. Azimuthal quantum number
D. Principal quantum number
OR
(ii) The magnetic quantum number specifies?
A. Size of orbitals
B. Shape of orbitals
C. Orientation of orbitals
D. Nuclear Stability
6. (i) A body of mass 10 mg is moving with a velocity of 100 ms-1. The 1
wavelength of de-Broglie wave associated with it would be? (Note: h =
6.63 × 10-34 Js)
A. 6.63 × 10-37 m
B. 6.63 × 10-31 m
C. 6.63 × 10-34 m
D. 6.63 × 10-35 m
OR
(ii) Nucleus contains…………. % of the mass of the atom.
A. 75
B. 18.9
C. 99.98
D. 100
7. (i) The chemical formula of baking powder is————- 1
A. NaHCO3
B. Na2CO3
C. Na2SO4
D. NaCl
OR
(ii) Which has the maximum electropositive character?
A. Cu
B. Cs
C. Ba
D. Cr
8. Which of the following has square planar structure? 1
A. [NiCl4]2-
B. [Ni(CO)4]
C. [Ni(CN)4]2-
D. None of these
9. Mohr’s salt is…………….. 1
A. Fe2(SO4)3.(NH4)2SO4.6H2O
B. FeSO4.(NH4)2.SO4.6H2O
C. MgSO4.7H2O
D. FeSO4.7H2O
10. (i) Among the following alkenes:
alkenes 1-butane (I), cis-2-butene (II), trans-22- 1
butene (III), the decreasing order of stability is…………….
A. III > II > I
B. III > I > II.
C. I > II > III
D. II > I > III
OR
(ii) The I.U.P.A.C. name of…………………
A. 3-Methyl
Methyl cyclohexene
B. 1-methyl cylohex-2--ene.
C. 6-methyl
methyl cyclohexene
D. 1-methyl
methyl cyclohex5
cyclohex5-ene.
11. (i) When CH3CH2CHCl2 is treated with NaNH2, the product 1
is………….
A. CH3 – CH – CH2
B. CH3 – C ≡ CH
C. CH3CH2CH (NH2)2
D.
OR
(ii) The treatment of benzene with isobu.ene in the presence of sulphuric
acid gives……………..
A. Isobutyl benzene
B. Tert-butyl benzene
C. n-Butyl benzene
D. No reaction
12. (i) When phenol is treated with excess bromine water it gives……….. 1
A. m-bromophenol
B. o- and p-bromophenol
bromophenol
C. 2,4-dibromophenol
D. 2,4,6-tribromophenol
tribromophenol
OR
(ii) Dehydration of alcohol is an example of………………
A. addition reaction
B. elimination reaction
C. substitution reaction
D. redox reaction
13. Ester is formed by a reaction between…………. 1
The Chemistry teacher was explaining the properties of two hydrides of Sulphur
and Oxygen: H2S and H2O. H2S and H2O are having same hybridization states but
different bond angles. H2S have indefinite volume while H2O has definite volume.
H2S cannot be placed in an open container but H2O can be placed due to their
different physical states. (Out of four attempt any two)
(nucleus, 20, 21, 11, 12, 23, mass number, atomic number)
2. In the gaseous state, nitric oxide is ____ but in the liquid state it is ____.
4. H3PO3 is a _______acid.
22. Read the passage given below and answer the following questions: 1×2=2
At a sweet shop in Hyderabad, Rishi bought some sweets. He requested the sales
boy to put the sweets in a polythene bag. The sales boy refused to do so; instead he
kept the sweet box in a paper bag. (Out of four attempt any two)
1. Why did the sales boy refuse to put the sweet box in a polythene bag?
2. As a student of chemistry, why would you advocate the use paper bags instead
of polythene bags?
3. Give a use of biodegradable polymer.
4. Which of the following is a natural polymer?
Buna-S, Proteins, PVC
23. Read the passage given below and answer the following questions: 1×2=2
The f-block elements are those in which the differentiating electrons enters the (n-
2)f orbitals. There are two series of f-Block elements corresponding to filling of 4f
and 5f-orbitals. The series of 4f-orbitals is called lanthanides. Lanthanides show
different oxidation states depending upon stability of f 0, f7 and f14 configurations,
though the most common oxidation states are +3. There is a regular decrease in the
size of lanthanides ions with increase in atomic number which is known as
lanthanides contraction.
The following questions are multiple choice questions. Choose the most
appropriate answer: (Out of four attempt any two)
1. The atomic number of three lanthanides elements X, Y and Z are 65, 68 and 70
respectively, their Ln3+ electronic configuration is
(a) 4f8, 4f11, 4f13
(b) 4f11, 4f8, 4f13
(c) 4f0, 4f2, 4f11
(d) 4f3, 4f7, 4f9
26. Read the passage given below and answer the following questions: 1×2=2
Two students Prakhar and Pragati were discussing the allotropes of carbon.
Prakhar asked Pragati, why one allotrope of carbon is very hard to use to make
jewellery meanwhile Pragati told Prakhar that the other allotrope of carbon is a
good conductor and used to make pencils.
(Out
Out of four attempt any two)
two
27. Write TRUE (T) for correct statement and FALSE (F) for incorrect 1×2=2
statements:
(Out
Out of four attempt any two)
two
28. Read the passage given below and answer the questions given
given- 1×2=2
Soaps are cleansing agents and find application in daily life. They may be sodium
or potassium salts of esters of fatty acids. Large varieties of soaps are available in
market right from bathing soaps to washing to shaving, to laundry etc. We also
have perfumed ones, medicated ones, soap powders& liquid soaps. Detergents are
much in vogue these days and get preference over soaps because they work well
in hard water. Synthetic dedetergents
tergents are classified into three categories-
categories anionic,
cationic, and nonionic. Each category has got specific use. Detergents with
straight chain hydrocarbons are preferred over branched chain as the latter are
non-biodegradable,
biodegradable, cause foaming in water bodies
bodies even though they are subjected
to effluent treatment, thus leading to water pollution.
(Out of four attempt any two)
two
Part-A
Q. No. Expected value points Distribution of
Marks
1. D) protons and electrons 1
2. D) n, α, p, e 1
3. (i) D) 9.84 × 105 J mol-1 1
OR
(ii)A) Monoatomic
4. B) 1 1
5. (i)B) Magnetic quantum number 1
OR
OR
(ii) C) 99.98
7. (i)A)NaHCO3 1
OR
(ii)B) Cs
8. C)[Ni(CN)4]2- 1
9. B)FeSO4.(NH4)2.SO4.6H2O 1
10. (i)A) III > II > I 1
OR
OR
OR
OR
(ii)A)A and D
16. D)Fibrinogen 1
17. 1. Chalgogens 1×2=2
2. diatomic
4. pale blue
18. 1. Sp3 in both cases (H2O and H2S) 1×2=2
2. H2O is liquid while H2S is a gas.
3. H2O the bond angle is 104.5∘
4.
2. TRUE
3. TRUE
4. FALSE
20. 1. atomic number 1×2=2
2. mass number
3. 11
4. 23
21. 1. absence of d - orbital , 1×2=2
2. paramagentic , diamagnetic
3. N2O5
4. Dibasic
22. 1. Polythene is banned because of being non
non-degradable. 1×2=2
29. Use of polythene bags results in pollution as polythene is non- non
biodegradable value.
30. In packaging.
31. Proteins
23. 1. (a) 4f8, 4f11, 4f13 1×2=2
2. (a) Gd
3. (b) As a result of lanthanide contraction, the properties of 4d series of
the transition elements have no similarities with the 5d series of
elements.
4. (a) impaired neurological development, carcinogenic
2. FALSE
3. TRUE
4. FLASE
28. 1. Calcium and magnesium salts of detergents are also soluble in water 1×2=2
and does not form scum unlike soaps.
2. Bithionol, Dettol, Savlon.
3. Anionic
4. Nonionic
5. True
6. False
Q.No. Section-B Distribution
of Marks
29. (i)The
The buffer capacity is the ability of the buffer to resist changes in pH by the 2
addition of small quantities of acid or base. The quantitative measure of buffer
capacity is the buffer index.
OR
(ii)The
The temperature at which a liquid boils at normal atmospheric pressure is its
boiling point. The boiling point of water is 1000C. Freezing point of a liquid is
the temperature at which it freezes to solid at normal atmospheric pressure.
30. Most of the exothermic reactions are spontaneous due to an increase in energy. 2
Burning a substance is a spontaneous process.
34. (a) On adding catalyst in a reaction, the activation energy reduces and rate of 2
reaction is fastened.
(b) A catalyst does not alter Gibbs energy (AG) of a reaction.
35. (i)The stability of +5 oxidation state decreases and that of +3 state increases due 2
to inert pair effect down the group therefore Bi(v) accepts two electrons and gets
reduced to Bi (v).
Bi5+ + 2e– → Bi3+
OR
(ii)
36. 2
37. 2
38. 3
A. Mole fraction: Mole fraction is the ratio of number of moles of one
component to the total number of moles in a mixture.
B. Isotonic solution: Two solutions having same osmotic pressure at a given
temperature are called Isotonic solutions.
C. van’t Hoff factor : van’t Hoff factor is expressed as :
i = normal molar mass /abnormal molar mass
39. 3
(i)This can be achieved as under:
A. Place the egg in a mineral acid solution for about 2 hours. The outer shell of
the egg dissolves.
B. Remove any portion of it is left with your fingers. Place the egg in a
saturated solution (hypertonic) of sodium chloride for about 3 hours. Size of
the
he egg is reduced as the egg shrivels due to osmosis.
C. Inert the egg in a bottle with a narrow neck. Add water to the bottle. Water
will act as hypotonic solution; Egg regains shape due to osmosis. This is
shown diagrammatically as under:
under:-
OR
(ii)
40. 3
41. 3
(i)First member of each group of representative elements (i.e., s-and p- block
elements) shows anomalous behaviour due to (i) small size (ii) Higher ionisation
enthalpy (iii) higher electronegativity and (iv) absence of d- orbitals.
In p- block elements, first member of each group has four orbitals, one 2s orbital
and three 2 p orbitals in their valence shell. So, these elements show a maximum
covalency of four while other members of the same group or different group
show a maximum covalency beyond four due to the availability of vacant d -
orbitals.
OR
(ii)Ionic and covalent nature of the hydrides can be explained on the basis of the
reaction of hydrogen with the elements. Ionic and covalent nature of the hydrides
can be explained on the basis of the reaction of hydrogen with the elements. Ionic
hydrides are formed by the elements of s-block. Covalent hydrides are formed by
the p-block elements as hydrogen shows reaction with similar electronegative
elements like silicon etc. So, hydrides of p-block elements are covalent in nature.
42. 5
A. Tetraamminedichloridochromium (III) chloride.
B. Optical isomerism
C. In [NiCl4]2- complexion, nickel is in +2 oxidation state and the configuration
is 3d8. Since the molecule is tetrahedral, it involves sp3 hybridisation as
shown below:
These two forms are crystalline and have different melting points and optical
rotations. For example, α-form of glucose has m.p. 419 K and |α|D = + 111° and
the β-form of glucose has m.p. 423 K and |α|D = + 19.2°.
The α-D-glucose and β-D-glucose can be drawn in a simple six-membered ring
form called pyranose structures. These resemble pyran which is a six-membered
heterocyclic ring containing five carbon atoms and one oxygen atom.
These are known as pyranose structures and are shown below:
OR
(ii)
(A)Water soluble vitamins must be supplied regularly in the diet because they are
regularly excreted in urine and cannot be stored in our body. For eg., Vitamin C,
Vitamin B, etc.
(B)
(a) Essential amino acids: Amino acids which the body cannot synthesize are
called essential amino acids. Example: Valine, leucine etc. Therefore they must
be supplied in diet.
Non-essential amino acids: Amino acids which the body can synthesize are
called non-essential amino acids. Therefore, they may or may not be present in
diet. Example; Glycine, alanine etc.
(b)
1. Polypeptide chains of
1. Globular proteins have
fibrous proteins consist of
almost spheroidal shape due
thread like molecules which
to folding of the polypeptide
tend to lie side by side to
chain.
form fibres.
1. Force and Energy L-1 (Units Dimensions and L-3 (Laws of Motion)
Vectors) L-6 (Work, Energy and Power)
L-2 (Motion in a Straight Line)
L-4 (Motion in a Plane)
L-5 (Gravitation)
L-7 (Motion of a Rigid Body)
2. Mechanics of Solids L-8 (Elastic Properties of Solids) L-9 (Properties of Fluids)
and Fluids
Bifurcation of Syllabus
BOOK -2 Chapter -30A Chapter -26A The Reception desk and you
OPTIONAL Aids for a Receptionist Chapter -26B Face to face communication in
MODULES Chapter -27B business
(ESP- Receptionist) Writing memos and letters Chapter -27A Managing the telephone
Chapter -30B Chapter -28A Analysing turns in telephone
Writing job applications Chapter -28B Writing emails
Chapter -29A Controlling strategies and Out-
Going Calls
Chapter -29B Writing Reports
Chapter -31B Appearing for an interview
Chemistry (313)
Bifurcation
Total no. of Lessons =32
MODULE I II
(No. & name) TMA (40%) Public
Examination
(60%)
(No.oflessons-12) Total Lesson - 20
4
قبس 12اربکاہلآتادی-یئنذہتی قبس 11مظناکاراقت امڈویك2 -
قبس 14دخمولیحمادلنی-اچدنتاروںاکنب قبس 13اسرحدلایھونی-رپاھچایئں
قبس 15اجںاثنرارتخِ -
اخکونط
قبس 31Bربخںیایتررکتا
5