II - 19.09.21 - SR - STAR CO-SC (MODEL-A) - Jee - Adv - 2019 - P2 - GTA-1 - QP
II - 19.09.21 - SR - STAR CO-SC (MODEL-A) - Jee - Adv - 2019 - P2 - GTA-1 - QP
II - 19.09.21 - SR - STAR CO-SC (MODEL-A) - Jee - Adv - 2019 - P2 - GTA-1 - QP
PHYSICS
+Ve - Ve No.of Total
Section Question Type
Marks Marks Qs marks
One of More Correct Options Type
Sec – I (Q.N : 1 – 8) +4 -1 8 32
(partial marking scheme) (+1)
Questions with Numerical Value Type
Sec – II (Q.N : 9 – 14) (e.g. 6.25, 7.00, ‐0.33, ‐.30, 30.27, ‐1 +3 0 6 18
27.30)
Matrix Matching Type
Sec – III (Q.N : 15 – 18) (Each match consist of 2 questions)
+3 -1 4 12
Total 18 62
CHEMISTRY
+Ve - Ve No.of Total
Section Question Type
Marks Marks Qs marks
One of More Correct Options Type
Sec – I (Q.N : 19 – 26) +4 -1 8 32
(partial marking scheme) (+1)
Questions with Numerical Value Type
Sec – II (Q.N : 27 – 32) (e.g. 6.25, 7.00, ‐0.33, ‐.30, 30.27, ‐ +3 0 6 18
127.30)
Matrix Matching Type
Sec – III (Q.N : 33 – 36) (Each match consist of 2 questions)
+3 -1 4 12
Total 18 62
MATHEMATICS
+Ve - Ve No.of Total
Section Question Type
Marks Marks Qs marks
One of More Correct Options Type
Sec – I (Q.N : 37 – 44) +4 -1 8 32
(partial marking scheme) (+1)
Questions with Numerical Value Type
Sec – II (Q.N : 45 – 50) (e.g. 6.25, 7.00, ‐0.33, ‐.30, 30.27, ‐ +3 0 6 18
127.30)
Matrix Matching Type
Sec – III (Q.N : 51 – 54) (Each match consist of 2 questions)
+3 -1 4 12
Total 18 62
A) The maximum volume of the water that can be stored when the vessel is accelerated
is hcb / 2
B) The maximum volume of the water that can be stored when the vessel is accelerated
is hlb / 2
B) Torque of normal force between rope and pulley on pulley about O is zero
C) Torque of friction force between rope and pulley on pulley about O is mgR
D) Torque of friction force between rope and pulley on pulley about O is zero
C) The angle between the incident ray and the emergent ray is 1200
4. Remote objects are viewed through a converging lens with a focal length F 9 cm placed
at a distance a 36 cm in front of the eye. Assume that the radius r of the pupil is
approximately 1.5 mm . Choose the correct options.
A) The minimum radius of the screen that should be placed behind the lens so that the
entire field of view is covered is 0.5 mm
B) The minimum radius of the screen that should be placed behind the lens so that the
entire field of view is covered is 1.0 mm
C) The screen must be placed in the plane S with its centre at point B
D) The screen must be placed perpendicular to the plane S with its centre at point B
3B 2
A) Current flowing through the rod is
4R
3B 23
B) Magnetic force acting on the rod is
4R
3B 2 4
C) Torque due to magnetic force acting on the rod is
8R
D) magnitude of external force that acts perpendicularly at the end of the rod to maintain
3B 23
the constant angular speed is
8R
6. Two point monochromatic and coherent sources of light of wavelength are placed on
the dotted line in front of an infinite screen. The source emit waves in phase with each
other. The distance between S 1 and S 2 is d while their distance from the screen is much
larger. Then
3
A) If d is , at O minima will be observed
2
11 3
B) If d is , then intensity at O will be of maximum intensity
6 4
C) If d is 3 , O will be a maxima
7 3
D) If d is , the intensity at O will be of maximum intensity
6 4
SR.IIT_*CO-SC Page. No. 5
Narayana IIT Academy 19-09-21_SR.IIT_*CO-SC(MODEL-A)_JEE-Adv_GTA-1_Q’P
A) 1 : 2 : 3 1: 2 : 4
B) 1 : 2 : 3 4 : 2 :1
hc
C) tan
e
D) ultraviolet can be used to emit photoelectrons from metal 2 and metal 3 only
8. A large plate with uniform surface charge density is moving with constant speed v as
shown in the figure. The magnetic field at a small distance from plate is
0 v
A) 0 v in magnitude B) in magnitude
2
C) perpendicular to plate D) parallel to plate
SECTION – II
(Numerical Value Answer Type )
This section contains 6 questions. The answer to each question is a Numerical values comprising of positive
or negative decimal numbers (place value ranging from Thousands Place to Hundredths place).
Eg: 1234.56, 123.45, -123.45, -1234.56, -0.12, 0.12 etc.
Marking scheme : +3 for correct answer, 0 in all other cases.
9. From the top of tower of height 80 m , a body projected with velocity 50 m / s at an angle
of inclination of 370 . If mass of the body is m 0.01 kg and acceleration due to gravity is
10 m / s 2 , then find power (in watts) supplied by gravitational force on the body seven
11. A room is in shape of a cube. A heavy ball ( B ) is suspended at the centre of the room
tied to three inextensible strings as shown. String BA is horizontal with A being the
centre point of the wall. Find the ratio of tension in the string BA and BC .
12. A 20 mm diameter copper pipe is used to carry heated water. The external surface of the
pipe is at T 800 C and its surrounding is at T0 200 C . The outer surface of the pipe
radiates like a black body and also loses heat due to convection. The connective heat loss
per unit area per unit time is given by h T T0 where h 6W m2 K . Calculate the total
1
heat lost by the pipe in unit time for one meter of its length.
13. A spool has the shape shown in figure. Radii of inner and outer cylinders are R and
2R respectively. Mass of the spool is 3m and its moment of inertia about the shown axis
is 2mR 2 . Light threads are tightly wrapped on both the cylindrical parts. The spool is
placed on a rough surface with two masses m1 m and m 2 2m connected to the strings
as shown. The string segment between spool and the pulleys P1 and P2 are horizontal.
The centre of mass of the spool is at its geometrical centre. System is released from rest.
14. In the arrangement shown in the figure A is an equilateral wedge and the ball B is
rolling down the incline XO . Find the velocity of the wedge (of course, along OY ) at the
moment velocity of the ball is 10 m / s parallel to the incline XO
SECTION-III
(MATCHING LIST TYPE)
This section contains 4 questions, each having two matching lists (List-1 & List-II). The options for the correct
match are provided as (A), (B),(C) and (D) out of which ONLY ONE is correct.
Marking scheme: +3 for correct answer, 0 if not attempted and -1 in all other cases.
Answer Q.15 and Q.16 by appropriately matching the lists based on the information
given in the paragraph.
In a thermodynamic process on an ideal monoatomic gas, the infinitesimal heat absorbed
by the gas is given by T X , where T is temperature of the system and X is the
infinitesimal change in a thermodynamic quantity X of the system. For a mole of
3 T v
monoatomic ideal gas X R n R n .
2 TA vA
The List – I below gives some quantities involved in a process and List – II gives some
possible values of these quantities
List - I List - II
(I) Work done by the system in process 1 2 3 (P) 1 RT n2
0
3
(II) Change in internal energy in process 1 2 3 (Q) 1
RT0
3
(III) Heat absorbed by the system in process 1 2 3 (R) RT0
(IV) Heat absorbed by the system in process 1 2 (S) 4
RT0
3
(T) 1
RT0 3 n2
3
(U) 5
RT0
6
A) I Q, II S , III R, IV U B) I S , II R, III Q, IV T
C) I Q, II R, III P, IV U D) I Q, II R, III S , IV U
16. If the process carried out on one mole of monoatomic ideal gas is as shown in the TV -
1
0 0
diagram with PV RT0 . The correct match is
3
The List – I below gives some quantities involved in a process and List – II gives some
possible values of these quantities.
A) I P, II R, III T , IV P B) I P, II R, III T , IV S
C) I S , II T , III Q, IV U D) I P, II T , III Q, IV T
Answer Q.17 and Q.18 by appropriately matching the lists based on the information
given in the paragraph.
A musical instrument is made using four different metal strings, 1,2,3 and 4 with mass
per unit length , 2 , 3 and 4 respectively. The instrument is played by vibrating the
strings by varying the free length in between the range L 0 and 2L 0 . It is found that in
17. List – I gives the above four strings while List – II lists the magnitude of some quantity.
List - I List - II
(I) String – 1 ( ) (P) 1
(II) String – 2 ( 2 ) (Q) 1/2
(III) String – 3 ( 3 ) (R) 1/ 2
(T) 3/16
(U) 1/16
A) I Q, II S , III R, IV P B) I P, II R, III S , IV Q
C) I P, II Q, III T , IV S D) I Q, II P, III R, IV T
3L 0 5 L 0 7L
18. The length of the strings 1,2,3 and 4 are kept fixed at L 0 , , and 0 , respectively.
2 4 4
Strings 1,2,3, and 4 are vibrated at their 1st , 3rd , 5th and 14th harmonics, respectively
such that all the strings have same frequency. The correct match for the tension in the
List – I gives the above four strings while List – II lists the magnitude of some quantity.
List - I List - II
(I) String – 1 ( ) (P) 1
(II) String – 2 ( 2 ) (Q) 1/2
(III) String – 3 ( 3 ) (R) 1/ 2
(T) 3/16
(U) 1/16
A) I P, II R, III T , IV U B) I P, II Q, III T , IV U
C) I T , II Q, III R, IV U D) I P, II Q, III R, IV T
of He whose energy, azimuthal quantum number and magnetic quantum number are
3.4 eV , 2 and 0 respectively. Which of the following statement(s) is (are) true for the
state ?
A) It is a 4d state
B) It has 2 angular nodes
C) It has 3 radial nodes
D) The nuclear charge experienced by the electron in this state is less then 2e, where ‘e’
is the magnitude of the electronic charge.
20. Among the following, the correct statement(s) is (are)
A) Al CH 3 3 has the three-centre two-electron bonds in its dimeric structure.
A) q 0 B) T2 T1 2 2 PV
C) PV 1 1 2 2 PV
D) PV 1 1
fructose in aqueous solution are 660 , 1400 , 520 and 920 , respectively)
A) ‘Invert sugar’ is prepared by acid catalyzed hydrolysis of maltose
B) ‘Invert sugar’ is an equimolar mixture of D -glucose and D -fructose
A) B) C) D)
data: Molar mass of water 18 g mol 1 , gram atomic weight of sulphur 32g )
238 206
28. 92 U is known to undergo radioactive decay to form 82 Pb by emitting alpha and beta
en NH 2CH 2CH 2 NH 2
31. A saturated solution in AgA K sp 3 1014 and AgB K sp 1014 has conductivity of
375 1010 Scm 1 and limiting molar conductivity of Ag and A are 60 Scm 2 mol 1 and
80 Scm 2 mol 1 respectively. The what will be the limiting molar conductivity of ‘B’ (in
Scm 2 mol 1 )
32. The packing percentage for equilateral triangular rods stacked as shown below is
CH 3 3 C O CH 3
HI
(I)
aq
(P) Unimolecular path
O OCH 3
C
Ph Ph
(II)
conc . H 2 SO4 (Q) Bimolecular path
Ph
O OH
Aromatic electrophilic
(III) O
conc . H 2 SO4
(R)
substitution
O
O
OH conc
(IV) CH 3 C (S) Product is coloured (in
O C CH 3 3 acidic or basic medium)
33. Which of the following option has correct combinations considering the List-I and List-
II.
A) I – Q B) II – P,R,S,T C) I – P,S,U D) II – Q,T
34. Which of the following option has correct combinations.
A) III – P,T B) IV – P,U C) IV – P,T D) III – R,S
(I) (P)
(II) (Q)
(III) (R)
(IV) (S)
(T)
(U)
35. Which of the following options has correct combination considering List-I and List-II?
A) I – Q,T,U B) II – P,S,T C) II – P,S,U D) I – S,Q,R
36. Which of the following options has correct combination considering List-I and List-II?
A) III – S,R B) IV – Q,U C) III – T,U D) IV – Q,R
D) 2 f (0) 2 f (2) 3 f
2
3
39. A triangle has sides 6, 7, 8. The line through its incentre parallel to the shortest side is
drawn to meet the other two sides at P and Q. The length of the segment PQ is
30 25 36
A) equal to B) greater than C) less than D) equal to 5
7 7 7
40. The differentiable function y f ( x) has a property that the chord joining any two points
A x1 , f ( x1 ) and B x2 , f ( x2 ) always intersects y-axis at 0, 2x1 x2 . Given that f (1) 1,
then
1
A) f ( x) is a polynomial B) maximum value of f ( x) is
8
C) f (2) 6 D) f (2) 6
41. Which of the following statement(s) is/are correct ?
A) The number of quadratic equations having real roots which remain unchanged even
after squaring their roots is 3.
B) The number of solutions of the equation tan 2 tan 3 0 , in the interval 0, is
equal to 6.
2 x1 128 x32 x3
C) For x1 , x2 , x3 0, the minimum value of 2 2 2 equals 24.
x2 x2 4 x1 x3
D) The locus of the mid-points of chords of the circle x 2 y 2 2 x 6 y 1 0 , which are
passing through origin is x 2 y 2 x 3 y 0 .
then
A) a b c B) A B C
3 3
C) Area of ABC D) Triangle ABC is right angled
8
43. A consignment of 15 record players contain 4 defectives. The record players are
selected at random, one by one and examined. The one examined is not put back. Then
A) Probability of getting exactly 3 defectives in the examination of 8 record players is
4 11
C3 C5
15
.
C8
8
B) Probability that 9th one examined is the last defective is .
197
C) Probability that 9th examined record player is defective, given that there are 3
1
defectives in first 8 players examined is .
7
8
D) Probability that 9th one examined is the last defective is .
195
44. Let a, b, c, d be non zero distinct digits. The number of 4 digit numbers abcd such that
ab cd is even is divisible by
A) 3 B) 4 C) 7 D) 11
SECTION – II
(Numerical Value Answer Type )
This section contains 6 questions. The answer to each question is a Numerical values comprising of positive
or negative decimal numbers (place value ranging from Thousands Place to Hundredths place).
Eg: 1234.56, 123.45, -123.45, -1234.56, -0.12, 0.12 etc.
Marking scheme : +3 for correct answer, 0 in all other cases.
z2 z2 z2
45. Let z1 , z2 , z3 be complex numbers such that z1 z2 z3 1 and 1 2 3 1 0 .
z2 z3 z1 z3 z1 z2
I I j, i j J 2016 j J j 3 , i j
aij 2012i and the matrix B bij 3 3 , where bij . Find
0, i j 0, i j
2
48. The value of the definite integral 1 x 3 3 x 2 2 x dx is
0
50. Rectangle ABCD has area 200. An ellipse with area 200 passes through A and C and
P
has foci at B and D. Let perimeter of the rectangle ABCD is P, then
10
SECTION-III
(MATCHING LIST TYPE)
This section contains 4 questions, each having two matching lists (List-1 & List-II). The options for the correct
match are provided as (A), (B),(C) and (D) out of which ONLY ONE is correct.
Marking scheme: +3 for correct answer, 0 if not attempted and -1 in all other cases.
Answer Q.51 and Q.52 by appropriately matching the lists based on the information
given in the paragraph.
If y x 1 is axis of parabola, y x 4 is tangent of same parabola at its vertex and
y 2 x 3 is one of its tangent, then
Column – I Column – II
If equation of directrix of parabola is
i) P) 9
ax by 29 0 , then a b
a 2
If length of latus rectum of parabola is where
b Q) 18
ii)
a and b are relatively prime natural numbers, then
ab
Let extremities of latus rectum are a1 , b1 and
iii) a2 , b2 , then a1 b1 a2 b2 R) 23
(where [.] denotes greatest integer function)
If equation of parabola is a x y 1 b x y 4
2
x 1 y 2 x 5 y 5 3
2 2 2 2
i) hyperbola P) 8