RBT 1
RBT 1
RBT 1
Instructions
Note:
1. The question paper contains 3 sections (Sec-1, Chemistry, Sec-II, Physics & Sec-III, Mathematics.)
2. Each section is divided into three parts, PART-A, PART-B and PART-C.
3. PART – A contains 13 questions which are further divided as follows:
Q. 1 – 5 are multiple choice questions. Each question has four choices (A), (B), (C) and (D), out of
which only one is correct.
Q. 6 – 13 are multiple correct answer type questions. Each question has four choices (A), (B), (C) and
(D), out of which one or more answer(s) is/are correct.
4. PART – B contains 1 Matrix Match Type Questions which have statements given in 2 columns.
Statements in the first column have to be matched with statements in the second column. There may be
One or More Than One Correct choices.
5. PART–C contains 5 Numerical Based questions with Single Digit Integer as answer, ranging from 0 to 9.
Marking Scheme
1. For each question in the group Q. 1 – 5 to PART – A you will be awarded 5 marks if you have darkened only
the bubble corresponding to the answer and zero marks if no bubble is darkened. In all other cases, minus
three (–2) mark will be awarded.
2. PART – A (06 – 13) contains 8 Multiple Choice Questions which have One or More Correct answer.
For each question in the group Q. 6 – 13 of PART – A you will be awarded
Full Marks: +4 If only the bubble(s) corresponding to all the correct options(s) is (are) darkened.
Partial Marks: +1 For darkening a bubble corresponding to each correct option, provided NO incorrect
option is darkened.
Zero Marks: 0 If none of the bubbles is darkened.
Negative Marks: 2 In all other cases.
For example, if (A), (C) and (D) are all the correct options for a question, darkening all these three will result
in +4 marks; darkening only (A) and (D) will result in +2 marks; and darkening (A) and (B) will result in 2
marks, as a wrong option is also darkened.
3. PART – B contains 1 Matrix Match Type Questions which have statements given in 2 columns. Statements
in the first column have to be matched with statements in the second column. There may be One or More
Than One Correct choices. Each question carries +4 marks for all correct answer however for each correct
row +1 marks will be awarded. No negative marks will be awarded in this section.
4. PART-C (1 – 5) contains 5 Numerical Based questions with Single Digit Integer as answer, ranging from 0 to
9 and each question carries +3 marks for correct answer and –1 mark for wrong answer.
Enrolment Number :
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IIT2019, (Two Year CRP(17-19)-RBT-I-CPM-2
Section – I (Chemistry)
PART – A
(Single Correct Choice Type)
This section contains 5 multiple choice questions. Each question has four choices (A), (B), (C) and (D) out of which only
ONE option is be correct.
1. The equivalent weight of metal M is x and the formula of its oxide is M nOm. The atomic mass of metal
is
2n.x 2m.x 2mn mn
(A) (B) (C) (D)
m n x x
2. Equal no. of moles of NaOH and acidic KMnO4 are separately reacted with NaHC2O4 monosodium
oxalate. Ratio of no. of moles of NaHC2O4 reacted with NaOH and acidic KMnO4 respectively is
(A) 2 : 5 (B) 5 : 2 (C) 1 : 5 (D) None of these
3.
4. Calculate relative rate of effusion of O2 to CH4 through a container containing O2 and CH4 in 3 : 2
mass ratio
3 2 3 3
(A) (B) (C) (D) none of these
4 4 2 2 2
5. The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is [a 0 is Bohr radius]
h2 h2 h2 h2
(A) (B) (C) (D)
42ma02 162ma02 322ma02 642ma02
space for rough work
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6. In the figure representing variation of the compressibility factor Z of a real gas with pressure:
c
a
Z
b
P
Which of the following options are correct?
(A) ab shows that the gas is more compressible than ideal gas
(B) bc shows that the gas is more compressible than ideal gas
a
(C) ab may be explained by PV RT
V
(D) bc may be explained by PV RT Pb
7. The figure shows the effect of pressure on the compressibility factor, Z of a gas:
F
D
A
E
Z B C
P
The correct conclusion(s) is/are :
(A) The curve AE can be explained by PV = RT
(B) The curve AF and CD can be explained by PV = RT + Pb
a
(C) The curve AB can be explained by PV RT
V
(D) All the three curves AF, AE and CD shows the real behaviour
4
10. aFe CN6 bCe4 cOH dFe3 Ce3 CO32 NO3 H2O
Which of the following is/are correct about the above reaction?
(A) a = 1, b = 61, c = 250, d = 1 (B) a = 1, b = 61, c = 72, d = 1
(C) n-factor for Ce4+ is 61 (D) n-factor for Fe(CN)4-6 is 61.
space for rough work
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11. One mole of KMnO4 is used for complete oxidation of FeSO4,FeC2O4 and H2C2O4 respectively and
separately. Pick up the correct statement:
(A) 5 mole of FeSO4 can be oxidized (B) 3/5 mole of FeC2O4 can be oxidized
5
(C) mole of FeC2O4 can be oxidized (D) 2.5 mole of H2C2O4 can be oxidized
3
12. Select the correct statement(s)
(A) In the reaction MnO2 4HCl MnCl2 Cl2 2H2O. Eq. mass of HCl = 36.5
(B) In the reaction
K 2Cr2O7 14HCl 2KCl 2CrCl3 3Cl2 7H2O
7
Equivalent mass of HCl = molecular mass of HCl
3
7 4 6 3M
(C) 3Mn Mn 2Mn , EMn7 where M is molar mass of Mn7+
5
(D) KClO3 KCl O2 is a reaction in which oxygen acts as a reducing substance
13. Which of the following options are correct when a gas is at its critical point?
TC
P
dP d2P
(A) Z = 1 (B) Z 1 (C) 0 (D) 2
0
dV dV
space for rough work
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PART – B
(Matrix Match Type)
1.
PART – C
This section contains 05 multiple choice questions. The answer to each question is a single digit integer, ranging from 0
to 9 (both inclusive)
1. 8g of sulphur is burnt to form SO2 which is oxidised by Cl2 water. The solution is then treated with
1
BaCl2 solution. The moles of BaSO4 precipitated would be , value of n is
n
2. Number of electron in the orbitals of ‘Mn’ for which magnetic angular momentum vector is -h/2
Bohr orbit
The maximum position of radial nodes from the nucleus is x a0 the value of ‘x’ is
4. How many fold of degeneracy is observed for the energy of electron in n = 3 of H atom.
5. Not considering the e– spin, the degeneracy of second excited state(n = 3) of H atom is 9, while the
degeneracy of the second excited state of H– is
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IIT2019, (Two Year CRP(17-19)-RBT-I-CPM-6
Section – II (Physics)
PART – A
(Single Correct Choice Type)
This section contains 5 multiple choice questions. Each question has four choices (A), (B), (C) and (D) out of which only
ONE option is be correct.
2. A balloon start rising from the ground with an acceleration of 2.5 m/s 2. After 4 sec a stone is released
from the balloon. If g = 10 m/s2, the stone will
(A) have a maximum displacement of 20 m from ground.
(B) cover a total distance of 25 m after being released.
(C) reach the ground in 3.2 sec after being released.
(D) begin to move down after being released.
3. The graph which represents the variation of slope m of the trajectory of a projectile with horizontal
displacement s is
(A) (B)
m m
s
s
(C) (D)
m m
s
s
5. Two blocks of masses 10 kg and 5 kg are placed one over the other
on a horizontal plane as shown in the figure. If co-efficient of friction = 0.2 5kg
is = 0.2, and an external force F = 25 N is applied horizontally on
F = 25 N
the lower blocks, then, the force of friction between the two blocks is = 0.2
10kg
(A) 30 N (B) 25 N
(C) zero (D) 20 N
space for rough work
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2
6. A train starts from rest at S = 0 and is subjected to acceleration as a(m/s)
shown 6
(A) Change in velocity at the end of 10 m displacement is 50 m/s.
(C) The maximum velocity attained by train is not greater than 10 3 m/s.
(D) The maximum velocity of the train is between 15 m/s and 16 m/s.
7. The force exerted by the floor of an elevator on the foot of a person standing there is more than the
weight of the person if the elevator is
(A) going up and slowing down (B) going up and speeding up
(C) going down and slowing down (D) going down and speeding up.
8. Two projectile are thrown at the same time from two different points. The projectile thrown from the
origin has initial velocity 3iˆ 3ˆj with respect to earth. The projectile has initial velocity aiˆ bjˆ with
respect to earth thrown from the point (10, 5). ( î is a unit vector along horizontal, ĵ along vertical). If
the projectile collides after two second, then the
1 1
(A) value of a is -2 (B) value of a is (C) value of b is (D) value of b is –2
2 2
10. Starting from rest a particle moves in a straight line with acceleration a 2 t 2 m/s . Velocity of
2
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11. In the system as shown in figure, all the surfaces are smooth. Rod of mass
5 kg is moved by external agent with acceleration 12 m/sec 2 vertically
downwards then
(A) Acceleration of 10 kg wedge is 10 m/sec2
(B) Acceleration of 10 kg wedge 16 m/sec2
(C) The force exerted by rod on the wedge is 100 N
800
(D) The force exerted by rod on the wedge is N
3
12. The contact force exerted by one body on another body is equal to the normal force between the
bodies. It can be said that
(A) The surface must be frictionless.
(B) The force of friction between the bodies is zero.
(C) the magnitude of normal force equals that of friction.
(D) It is possible that the bodies are rough and they do not slip on each other.
13. Consider a rubber ball freely falling from a height h = 4.9 m onto a horizontal elastic plate. Assume
that the duration of collision is negligible and the collision with the plate is totally elastic. Then the
correct graph for velocity as a function of time the height as function of time are
v
(A) (B)
+v1
O t
–v1
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PART – B
(Matrix Match Type)
PART – C
This section contains 05 multiple choice questions. The answer to each question is a single digit integer, ranging from 0
to 9 (both inclusive)
3. Two cars leave one after the other and travel with an acceleration of 0.4 m/s 2. Two minutes after the
departure of the first, the distance between the cars becomes 1.9 km. If time interval between the
a
departure of the cars is min, then a =
6
space for rough work
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1
The velocity of the slider B is VB (in m), when vA = 0.2 y
n
m/s. Find the value of ‘n’.
3m
B
x
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z1 z2 z 4
2. If z 2 2 and then z1, z2 , z3 will be vertices of
z1 z3 z
(A) Equilateral Triangle (B) Acute Angled triangle
(C) Right Angled Triangle (D) None of these
3. All three roots of az3 bz2 cz d 0, have negative real part, a,b,c R then:
(A) All a, b, c, d have the same sign (B) a, b, c have same sign
(C) a, b, d have same sign (D) b, c, d have same sign
5. A variable triangle is inscribed in a circle of radius R. If rate of charge of a side is R times the rate of
change of the opposite angel, then length of that side is
(A) R (B) 3R (C) 2R (D) None
7. If the complex numbers z1, z2, z3, z4, taken in that order, represent the vertices of a rhombus, then
(A) z1 + z3 = z2 + z4 (B) |z1 – z2| = |z2 – z3|
z1 z3
(C) is purely imaginary (D) none of these
z2 z 4
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8. The centre of a square ABCD is at z = 0. If A is z1 , then which of the following may represent the
centroid of ABC?
z1 z1 z1 z1
(A) (B) i (C) (D) i
3 3 3 3
3 i 1
9. Let w
2
and P w n : n 1,2,3, . Further, H 1 z C : Re z
and
2
1
H2 z C : Re z , where C is the set of all complex numbers. If z1 P H1 , z2 P H2
2
and O represents the origin, then z1Oz2 =
5 2
(A) (B) (C) (D)
6 6 3
A
In a triangle ABC with fixed base BC, the vertex A moves such that cosB cosC 4 sin
2
10. . If a,b
2
and c denote the lengths of the sides of the triangle opposite to the angle A, B and C respectively,
then
(A) b c 4a (B) b c 2a
(C) locus of point A is an ellipse (D) locus of point A is a pair of straight lines
2
11. The triangle formed by the complex numbers z, iz, i z is:
(A) Equilateral (B) Isosceles (C) Right angled (D) Obtuse Angled
12. A circle of radius 4 inscribed in ABC which touches side BC at D. If BD = 6 and DC= 8 then
A 4 B 4
(A) perimeter = 42 (B) tan (C) tan (D) perimeter = 24
2 7 2 6
1 1 1 2
13. If h1,h2 ,h3 are length of altitudes of a triangle and where R is the radius of
h1 h2 h3 R
circumcircle then
(A) 2h1 3R (B) 3h1 2R (C) 2h2 3R (D) 3h2 2R
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PART – B
(Matrix Match Type)
1. In ΔABC, r 2, r1 4, S 12 and a b c
Column A Column B
(B) 4 4R (Q) 24
PART – C
This section contains 05 multiple choice questions. The answer to each question is a single digit integer, ranging from 0
to 9 (both inclusive)
z1 z2 is equal to
2
z1
1. If z1,z2 lies on z r and arg then
z2 3 z1z2
3. Let z1 3 and z2 7 represent two points A and B respectively on complex plane. Let the curve C1
2 2
be the locus of point P(z) satisfying z z1 z z2 10 and the curve C2 be the locus of points
2 2
P (z) satisfying z z1 z z2 16 . Least distance between curves C1 and C2 is:
4. If lengths of the sides AC, AB of a triangle ABC are 8 cm and 4 cm respectively and BAC = 600 then
circum radius of the triangle is
5. In a triangle ABC, b c 2a and A 60o . Let O be an interior point and its distance from
three sides 3,4,5 units , then circum radius of triangle ABC is
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SECTION – II (Physics)
Part – A
1. C 2. C 3. C 4. D
5. C 6. BC 7. BC 8. AC
9. BC 10. D 11. BD 12. BD
13. AC
Part – B
1. A PQRS B PQRS C PRS D PQRS
Part – C
1. 4 2. 7 3. 5 4. 5
5. 4
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