Q1
PHYSICS
Unit 11: Electrostatics
Polar molecules are the molecules:
↻ Repeated question — also appeared in
2021 (12 sets)
- A. acquire a dipole moment only when magnetic field is absent.
- B. having a permanent electric dipole moment.
- C. having zero dipole moment.
- D. acquire a dipole moment only in the presence of electric field due to displacement of charges.
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Q1
PHYSICS
Unit 11: Electrostatics
Polar molecules are the molecules:
↻ Repeated question — also appeared in
2021 (12 sets)
- A. acquire a dipole moment only when magnetic field is absent.
- B. having a permanent electric dipole moment.
- C. having zero dipole moment.
- D. acquire a dipole moment only in the presence of electric field due to displacement of charges.
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Q3
PHYSICS
Unit 12: Current Electricity
Column-I gives certain physical terms associated with flow of current through a metallic conductor. Column-II gives some mathematical relations involving electrical quantities. Match Column-I and Column-II with appropriate relations.
Column-I: (A) Drift Velocity, (B) Electrical Resistivity, (C) Relaxation Period, (D) Current Density
Column-II: (P) m/(ne²τ), (Q) nev_d, (R) eEτ/m, (S) E/J
↻ Repeated question — also appeared in
2021 (4 sets)
- A. (A)-(R), (B)-(P), (C)-(S), (D)-(Q)
- B. (A)-(R), (B)-(Q), (C)-(S), (D)-(P)
- C. (A)-(R), (B)-(S), (C)-(P), (D)-(Q)
- D. (A)-(R), (B)-(S), (C)-(Q), (D)-(P)
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Q3
PHYSICS
Unit 12: Current Electricity
Column - I gives certain physical terms associated with flow of current through a metallic conductor. Column - II gives some mathematical relations involving electrical quantities. Match Column - I and Column - II with appropriate relations. Column - I: (A) Drift Velocity, (B) Electrical Resistivity, (C) Relaxation Period, (D) Current Density; Column - II: (P) 2/neρ, (Q) nevd, (R) eEτ/m, (S) E/J
↻ Repeated question — also appeared in
2021 (4 sets)
- A. (A)-(R), (B)-(P), (C)-(S), (D)-(Q)
- B. (A)-(R), (B)-(Q), (C)-(S), (D)-(P)
- C. (A)-(R), (B)-(S), (C)-(P), (D)-(Q)
- D. (A)-(R), (B)-(S), (C)-(Q), (D)-(P)
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Q4
PHYSICS
Unit 1: Physics and Measurement
If force [F], acceleration [A] and time [T] are chosen as the fundamental physical quantities. Find the dimensions of energy.
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2021 (11 sets)
- A. [F] [A] [T^-1]
- B. [F] [A^-1] [T]
- C. [F] [A] [T]
- D. [F] [A] [T^2]
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Q5
PHYSICS
Unit 6: Gravitation
The escape velocity from the Earth’s surface is v. The escape velocity from the surface of another planet having a radius, four times that of Earth and same mass density is:
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2021 (11 sets)
- A. 3v
- B. 4v
- C. v
- D. 2v
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Q6
PHYSICS
Unit 2: Kinematics
A small block slides down on a smooth inclined plane, starting from rest at time t=0. Let Sn be the distance travelled by the block in the interval t=n-1 to t=n. Then, the ratio Sn / Sn+1 is:
↻ Repeated question — also appeared in
2021 (8 sets)
- A. (2n+1)/(2n-1)
- B. (2n)/(2n-1)
- C. (2n-1)/(2n)
- D. (2n-1)/(2n+1)
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Q7
PHYSICS
Unit 7: Properties of Solids and Liquids
The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is d/2, then the viscous force acting on the ball will be:
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2021 (9 sets)
- A. 3Mg/2
- B. 2Mg
- C. Mg/2
- D. Mg
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Q11
PHYSICS
Unit 18: Atoms and Nuclei
A nucleus with mass number 240 breaks into two fragments each of mass number 120, the binding energy per nucleon of unfragmented nuclei is 7.6 MeV while that of fragments is 8.5 MeV. The total gain in the Binding Energy in the process is:
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 804 MeV
- B. 216 MeV
- C. 0.9 MeV
- D. 9.4 MeV
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Q12
PHYSICS
Unit 4: Work Energy and Power
Water falls from a height of 60 m at the rate of 15 kg/s to operate a turbine. The losses due to frictional force are 10% of the input energy. How much power is generated by the turbine? (g=10 m/s^2)
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2021 (11 sets)
- A. 12.3 kW
- B. 7.0 kW
- C. 10.2 kW
- D. 8.1 kW
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Q15
PHYSICS
Unit 19: Electronic Devices
The electron concentration in an n-type semiconductor is the same as hole concentration in a p-type semiconductor. An external field (electric) is applied across each of them. Compare the currents in them.
↻ Repeated question — also appeared in
2021 (10 sets)
- A. current in n-type > current in p-type.
- B. No current will flow in p-type, current will only flow in n-type.
- C. current in n-type = current in p-type.
- D. current in p-type > current in n-type.
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Q16
PHYSICS
Unit 10: Oscillations and Waves
A body is executing simple harmonic motion with frequency 'n', the frequency of its potential energy is:
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2021 (12 sets)
- A. 3n
- B. 4n
- C. n
- D. 2n
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Q16
PHYSICS
Unit 10: Oscillations and Waves
A body is executing simple harmonic motion with frequency 'n', the frequency of its potential energy is:
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2021 (12 sets)
- A. 3n
- B. 4n
- C. n
- D. 2n
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Q17
PHYSICS
Unit 8: Thermodynamics
A cup of coffee cools from 90°C to 80°C in t minutes, when the room temperature is 20°C. The time taken by a similar cup of coffee to cool from 80°C to 60°C at a room temperature same at 20°C is :
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2021 (6 sets)
- A. 10t/13
- B. 5t/13
- C. 13t/10
- D. 13t/5
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Q18
PHYSICS
Unit 12: Current Electricity
In a potentiometer circuit a cell of EMF 1.5 V gives balance point at 36 cm length of wire. If another cell of EMF 2.5 V replaces the first cell, then at what length of the wire, the balance point occurs?
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2021 (10 sets)
- A. 64 cm
- B. 62 cm
- C. 60 cm
- D. 21.6 cm
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Q19
PHYSICS
Unit 12: Current Electricity
The effective resistance of a parallel connection that consists of four wires of equal length, equal area of cross-section and same material is 0.25 Ω. What will be the effective resistance if they are connected in series?
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 1 Ω
- B. 4 Ω
- C. 0.25 Ω
- D. 0.5 Ω
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Q24
PHYSICS
Unit 19: Electronic Devices
Consider the following statements (A) and (B) and identify the correct answer. (A) A zener diode is connected in reverse bias, when used as a voltage regulator. (B) The potential barrier of p-n junction lies between 0.1 V to 0.3 V.
↻ Repeated question — also appeared in
2021 (11 sets)
- A. (A) is correct and (B) is incorrect.
- B. (A) is incorrect but (B) is correct.
- C. (A) and (B) both are correct.
- D. (A) and (B) both are incorrect.
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Q26
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
The number of photons per second on an average emitted by the source of monochromatic light of wavelength 600 nm, when it delivers the power of 3.3×10⁻³ watt will be : (h=6.6×10⁻³⁴ Js)
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 10¹⁶
- B. 10¹⁵
- C. 10¹⁸
- D. 10¹⁷
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Q27
PHYSICS
Unit 11: Electrostatics
A parallel plate capacitor has a uniform electric field ‘E’ in the space between the plates. If the distance between the plates is ‘d’ and the area of each plate is ‘A’, the energy stored in the capacitor is : (ε₀=permittivity of free space)
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 1/2 * ε₀ * E² * Ad
- B. ε₀ * E * Ad
- C. 1/2 * ε₀ * E
- D. ε₀ * EAd
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Q28
PHYSICS
Unit 15: Electromagnetic Waves
A capacitor of capacitance ‘C’, is connected across an ac source of voltage V, given by V=V₀ sinωt. The displacement current between the plates of the capacitor, would then be given by:
↻ Repeated question — also appeared in
2021 (3 sets)
- A. I_d = (V₀/Cω) * sinωt
- B. I_d = V₀ * ωC * sinωt
- C. I_d = V₀ * ωC * cosωt
- D. I_d = (V₀/Cω) * cosωt
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Q28
PHYSICS
Unit 12: Current Electricity
A capacitor of capacitance ‘C’, is connected across an ac source of voltage V, given by V=V0 sinωt. The displacement current between the plates of the capacitor, would then be given by:
↻ Repeated question — also appeared in
2021 (3 sets)
- A. Id = (V0/ωC) sin(ωt)
- B. Id = V0 ωC sin(ωt)
- C. Id = V0 ωC cos(ωt)
- D. Id = (V0/ωC) cos(ωt)
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Q29
PHYSICS
Unit 11: Electrostatics
Two charged spherical conductors of radius R₁ and R₂ are connected by a wire. Then the ratio of surface charge densities of the spheres (σ₁/σ₂) is :
↻ Repeated question — also appeared in
2021 (12 sets)
- A. (R₁/R₂)
- B. (R₂²/R₁²)
- C. (R₁/R₂)
- D. (R₂/R₁)
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Q29
PHYSICS
Unit 11: Electrostatics
Two charged spherical conductors of radius R1 and R2 are connected by a wire. Then the ratio of surface charge densities of the spheres (σ1/σ2) is:
↻ Repeated question — also appeared in
2021 (12 sets)
- A. (R1/R2)
- B. (R2^2/R1^2)
- C. (R1/R2)^2
- D. (R2/R1)
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Q30
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
An electromagnetic wave of wavelength ‘λ’ is incident on a photosensitive surface of negligible work function. If ‘m’ is mass of photoelectron emitted from the surface and has de-Broglie wavelength λd, then:
↻ Repeated question — also appeared in
2021 (3 sets)
- A. λd = (2mc/h)λ^2
- B. λd = (2h/mc)λ^2
- C. λd = (2m/hc)λ^2
- D. λ = (2mc/h)λd^2
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Q31
PHYSICS
Unit 10: Oscillations and Waves
A spring is stretched by 5 cm by a force 10 N. The time period of the oscillations when a mass of 2 kg is suspended by it is :
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2021 (12 sets)
- A. 3.14 s
- B. 0.628 s
- C. 0.0628 s
- D. 6.28 s
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Q31
PHYSICS
Unit 10: Oscillations and Waves
A spring is stretched by 5 cm by a force 10 N. The time period of the oscillations when a mass of 2 kg is suspended by it is:
↻ Repeated question — also appeared in
2021 (12 sets)
- A. 3.14 s
- B. 0.628 s
- C. 0.0628 s
- D. 6.28 s
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Q32
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
An infinitely long straight conductor carries a current of 5 A. An electron is moving with a speed of 10^5 m/s parallel to the conductor. The perpendicular distance between the electron and the conductor is 20 cm at an instant. Calculate the magnitude of the force experienced by the electron.
↻ Repeated question — also appeared in
2021 (8 sets)
- A. 4π×10^-20 N
- B. 8×10^-20 N
- C. 4×10^-20 N
- D. 8π×10^-20 N
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Q33
PHYSICS
Unit 18: Atoms and Nuclei
The half-life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be:
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 2/3
- B. 1/(2*sqrt(2))
- C. 1/2
- D. 1/(2*sqrt(2))
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Q35
PHYSICS
Unit 1: Physics and Measurement
If E and G respectively denote energy and gravitational constant, then E/G has the dimensions of:
↻ Repeated question — also appeared in
2021 (10 sets)
- A. [M] [L0] [T0]
- B. [M2] [L-2] [T-1]
- C. [M2] [L-1] [T0]
- D. [M] [L-1] [T-1]
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Q36
PHYSICS
Unit 5: Rotational Motion
From a circular ring of mass ‘M’ and radius ‘R’ an arc corresponding to a 90° sector is removed. The moment of inertia of the remaining part of the ring about an axis passing through the centre of the ring and perpendicular to the plane of the ring is ‘K’ times ‘MR^2’. Then the value of ‘K’ is:
↻ Repeated question — also appeared in
2021 (6 sets)
- A. 1/4
- B. 1/8
- C. 3/4
- D. 7/8
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Q37
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
A uniform conducting wire of length 12a and resistance ‘R’ is wound up as a current carrying coil in the shape of (i) an equilateral triangle of side ‘a’ and (ii) a square of side ‘a’. The magnetic dipole moments of the coil in each case respectively are:
↻ Repeated question — also appeared in
2021 (5 sets)
- A. 3 Ia^2 and 4 Ia^2
- B. 4 Ia^2 and 3 Ia^2
- C. sqrt(3) Ia^2 and 3 Ia^2
- D. 3 Ia^2 and Ia^2
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Q39
PHYSICS
Unit 3: Laws of Motion
A ball of mass 0.15 kg is dropped from a height 10 m, strikes the ground and rebounds to the same height. The magnitude of impulse imparted to the ball is (g=10 m/s^2) nearly:
↻ Repeated question — also appeared in
2021 (8 sets)
- A. 2.1 kg m/s
- B. 1.4 kg m/s
- C. 0 kg m/s
- D. 4.2 kg m/s
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Q40
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44 W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?
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2021 (10 sets)
- A. 2 A
- B. 4 A
- C. 0.2 A
- D. 0.4 A
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Q41
PHYSICS
Unit 11: Electrostatics
Twenty seven drops of same size are charged at 220 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop.
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2021 (11 sets)
- A. 1520 V
- B. 1980 V
- C. 660 V
- D. 1320 V
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Q43
PHYSICS
Unit 6: Gravitation
A particle of mass 'm' is projected with a velocity v = kv_e (k < 1) from the surface of the earth (v_e = escape velocity). The maximum height above the surface reached by the particle is:
↻ Repeated question — also appeared in
2021 (7 sets)
- A. R * k^2 / (1 - k^2)
- B. R * k^2 / (1 + k^2)
- C. R * k / (1 - k)
- D. R * k / (1 + k)
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Q44
PHYSICS
Unit 2: Kinematics
A car starts from rest and accelerates at 5 m/s^2. At t=4 s, a ball is dropped out of a window by a person sitting in the car. What is the velocity and acceleration of the ball at t=6 s? (Take g=10 m/s^2)
↻ Repeated question — also appeared in
2021 (9 sets)
- A. 20 sqrt(2) m/s, 0
- B. 20 sqrt(2) m/s, 10 m/s^2
- C. 20 m/s, 5 m/s^2
- D. 20 m/s, 0
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Q44
PHYSICS
Unit 2: Kinematics
A car starts from rest and accelerates at 5 m/s^2. At t = 4 s, a ball is dropped out of a window by a person sitting in the car. What is the velocity and acceleration of the ball at t = 6 s? (Take g = 10 m/s^2)
↻ Repeated question — also appeared in
2021 (9 sets)
- A. 20√2 m/s, 0
- B. 20√2 m/s, 10 m/s^2
- C. 20 m/s, 5 m/s^2
- D. 20 m/s, 0
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Q45
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
A series LCR circuit containing 5.0 H inductor, 80 µF capacitor and 40 Ω resistor is connected to 230 V variable frequency ac source. The angular frequencies of the source at which power transferred to the circuit is half the power at the resonant angular frequency are likely to be:
↻ Repeated question — also appeared in
2021 (7 sets)
- A. 46 rad/s and 54 rad/s
- B. 42 rad/s and 58 rad/s
- C. 25 rad/s and 75 rad/s
- D. 50 rad/s and 25 rad/s
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Q47
PHYSICS
Unit 12: Current Electricity
Three resistors having resistances r1, r2 and r3 are connected as shown in the given circuit. The ratio i3/i1 of currents in terms of resistances used in the circuit is:
↻ Repeated question — also appeared in
2021 (2 sets)
- A. r1 / (r1 + r2)
- B. r2 / (r1 + r3)
- C. r1 / (r2 + r3)
- D. r2 / (r2 + r3)
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Q48
PHYSICS
Unit 16: Optics
A point object is placed at a distance of 60 cm from a convex lens of focal length 30 cm. If a plane mirror were put perpendicular to the principal axis of the lens and at a distance of 40 cm from it, the final image would be formed at a distance of:
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2021 (6 sets)
- A. 30 cm from the plane mirror, it would be a virtual image.
- B. 20 cm from the plane mirror, it would be a virtual image.
- C. 20 cm from the lens, it would be a real image.
- D. 30 cm from the lens, it would be a real image.
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Q51
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
The compound which shows metamerism is:
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2021 (9 sets)
- A. C3H6O
- B. C4H10O
- C. C5H12
- D. C3H8O
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Q54
CHEMISTRY
Unit 11: d- and f-Block Elements
Zr (Z=40) and Hf (Z=72) have similar atomic and ionic radii because of:
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2021 (10 sets)
- A. lanthanoid contraction
- B. having similar chemical properties
- C. belonging to same group
- D. diagonal relationship
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Q55
CHEMISTRY
Unit 5: Solutions
Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are:
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2021 (2 sets)
- A. 2, 1
- B. 12, 6
- C. 8, 4
- D. 6, 12
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Q56
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
BF3 is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are:
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2021 (11 sets)
- A. sp2 and 6
- B. sp2 and 8
- C. sp3 and 4
- D. sp3 and 6
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Q56
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
BF3 is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are :
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2021 (11 sets)
- A. sp2 and 6
- B. sp2 and 8
- C. sp3 and 4
- D. sp3 and 6
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Q57
CHEMISTRY
Unit 5: Solutions
The following solutions were prepared by dissolving 10 g of glucose (C6H12O6) in 250 ml of water (P1), 10 g of urea (CH4N2O) in 250 ml of water (P2) and 10 g of sucrose (C12H22O11) in 250 ml of water (P3). The right option for the decreasing order of osmotic pressure of these solutions is :
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2021 (9 sets)
- A. P2 > P3 > P1
- B. P3 > P1 > P2
- C. P2 > P1 > P3
- D. P1 > P2 > P3
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Q58
PHYSICS
Unit 18: Atoms and Nuclei
Tritium, a radioactive isotope of hydrogen, emits which of the following particles?
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2021 (7 sets)
- A. Gamma (γ)
- B. Neutron (n)
- C. Beta (β−)
- D. Alpha (α)
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Q58
CHEMISTRY
Unit 2: Atomic Structure
Tritium, a radioactive isotope of hydrogen, emits which of the following particles?
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2021 (3 sets)
- A. Gamma (γ)
- B. Neutron (n)
- C. Beta (β-)
- D. Alpha (α)
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Q59
CHEMISTRY
Unit 12: Coordination Compounds
Ethylene diaminetetraacetate (EDTA) ion is:
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2021 (11 sets)
- A. Bidentate ligand with two “N” donor atoms
- B. Tridentate ligand with three “N” donor atoms
- C. Hexadentate ligand with four “O” and two “N” donor atoms
- D. Unidentate ligand
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Q59
CHEMISTRY
Unit 12: Coordination Compounds
Ethylene diaminetetraacetate (EDTA) ion is :
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2021 (11 sets)
- A. Bidentate ligand with two “N” donor atoms
- B. Tridentate ligand with three “N” donor atoms
- C. Hexadentate ligand with four “O” and two “N” donor atoms
- D. Unidentate ligand
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Q61
CHEMISTRY
Unit 15: Hydrocarbons
The major product formed in dehydrohalogenation reaction of 2-Bromo pentane is Pent-2-ene. This product formation is based on ?
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2021 (9 sets)
- A. Hofmann Rule
- B. Huckel’s Rule
- C. Saytzeff’s Rule
- D. Hund’s Rule
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Q62
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
Which of the following reactions is the metal displacement reaction ? Choose the right option.
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2021 (7 sets)
- A. Fe + 2HCl → FeCl2 + H2
- B. 2Pb(NO3)2 → 2PbO + 4NO2 + O2
- C. 2KClO3 → 2KCl + 3O2
- D. Cr2O3 + 2Al → Al2O3 + 2Cr
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Q63
CHEMISTRY
Unit 4: Chemical Thermodynamics
Which one among the following is the correct option for right relationship between CP and CV for one mole of ideal gas ?
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- A. CP = RCV
- B. CV = RCP
- C. CP + CV = R
- D. CP - CV = R
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Q64
BIOLOGY
Unit 5: Human Physiology
The RBC deficiency is deficiency disease of :
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- A. Vitamin B1
- B. Vitamin B2
- C. Vitamin B12
- D. Vitamin B6
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Q65
BIOLOGY
Unit 8: Biology and Human Welfare
Which one of the following polymers is prepared by addition polymerisation ?
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- A. Novolac
- B. Dacron
- C. Teflon
- D. Nylon-66
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Q66
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
An organic compound contains 78% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is : [Atomic wt. of C is 12, H is 1]
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2021 (10 sets)
- A. CH3
- B. CH4
- C. CH
- D. CH2
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Q67
CHEMISTRY
Unit 15: Hydrocarbons
Dihedral angle of least stable conformer of ethane is :
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2021 (7 sets)
- A. 60°
- B. 0°
- C. 120°
- D. 180°
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Q68
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Match List - I with List - II. List - I: (a) PCl5, (b) SF6, (c) BrF5, (d) BF3. List - II: (i) Square pyramidal, (ii) Trigonal planar, (iii) Octahedral, (iv) Trigonal bipyramidal.
↻ Repeated question — also appeared in
2021 (2 sets)
- A. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
- B. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
- C. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
- D. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
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Q70
PHYSICS
Unit 20: Experimental Skills
Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature ?
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2021 (3 sets)
- A. Distillation
- B. Zone refining
- C. Electrolysis
- D. Chromatography
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Q72
CHEMISTRY
Unit 10: p-Block Elements
Statement I : Acid strength increases in the order given as HF << HCl << HBr << HI. Statement II : As the size of the elements F, Cl, Br, I increases down the group, the bond strength of HF, HCl, HBr and HI decreases and so the acid strength increases.
↻ Repeated question — also appeared in
2021 (6 sets)
- A. Statement I is correct but Statement II is false.
- B. Statement I is incorrect but Statement II is true.
- C. Both Statement I and Statement II are true.
- D. Both Statement I and Statement II are false.
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Q73
CHEMISTRY
Unit 6: Equilibrium
The pKb of dimethylamine and pKa of acetic acid are 3.27 and 4.77 respectively at T (K). The correct option for the pH of dimethylammonium acetate solution is :
↻ Repeated question — also appeared in
2021 (9 sets)
- A. 7.75
- B. 6.25
- C. 8.50
- D. 5.50
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Q74
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The molar conductance of NaCl, HCl and CH3COONa at infinite dilution are 126.45, 426.16 and 91.0 S cm2 mol−1 respectively. The molar conductance of CH3COOH at infinite dilution is.
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 698.28 S cm2 mol−1
- B. 540.48 S cm2 mol−1
- C. 201.28 S cm2 mol−1
- D. 390.71 S cm2 mol−1
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Q74
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The molar conductance of NaCl, HCl and CH3COONa at infinite dilution are 126.45, 426.16 and 91.0 S cm2 mol−1 respectively. The molar conductance of CH3COOH at infinite dilution is.
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 698.28 S cm2 mol−1
- B. 540.48 S cm2 mol−1
- C. 201.28 S cm2 mol−1
- D. 390.71 S cm2 mol−1
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Q75
PHYSICS
Unit 7: Properties of Solids and Liquids
The right option for the statement “Tyndall effect is exhibited by”, is :
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2021 (4 sets)
- A. Starch solution
- B. Urea solution
- C. NaCl solution
- D. Glucose solution
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Q75
CHEMISTRY
Unit 5: Solutions
The right option for the statement “Tyndall effect is exhibited by”, is :
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2021 (7 sets)
- A. Starch solution
- B. Urea solution
- C. NaCl solution
- D. Glucose solution
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Q76
PHYSICS
Unit 7: Properties of Solids and Liquids
The correct option for the number of body centred unit cells in all 14 types of Bravais lattice unit cells is :
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2021 (8 sets)
- A. 2
- B. 3
- C. 7
- D. 5
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Q76
PHYSICS
Unit 7: Properties of Solids and Liquids
The correct option for the number of body centred unit cells in all 14 types of Bravais lattice unit cells is :
↻ Repeated question — also appeared in
2021 (8 sets)
- A. 2
- B. 3
- C. 7
- D. 5
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Q78
CHEMISTRY
Unit 11: d- and f-Block Elements
The incorrect statement among the following is :
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- A. Lanthanoids are good conductors of heat and electricity.
- B. Actinoids are highly reactive metals, especially when finely divided.
- C. Actinoid contraction is greater for element to element than Lanthanoid contraction.
- D. Most of the trivalent Lanthanoid ions are colorless in the solid state.
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Q79
CHEMISTRY
Unit 10: p-Block Elements
Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.
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2021 (10 sets)
- A. Noble gases have weak dispersion forces.
- B. Noble gases have large positive values of electron gain enthalpy.
- C. Noble gases are sparingly soluble in water.
- D. Noble gases have very high melting and boiling points.
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Q81
CHEMISTRY
Unit 10: p-Block Elements
Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is :
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- A. Magnesium chloride
- B. Beryllium chloride
- C. Calcium chloride
- D. Strontium chloride
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Q82
CHEMISTRY
Unit 20: Principles Related to Practical Chemistry
The maximum temperature that can be achieved in blast furnace is :
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- A. upto 1900 K
- B. upto 5000 K
- C. upto 1200 K
- D. upto 2200 K
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Q83
CHEMISTRY
Unit 19: Biomolecules
Given below are two statements : Statement I: Aspirin and Paracetamol belong to the class of narcotic analgesics. Statement II: Morphine and Heroin are non-narcotic analgesics. In the light of the above statements, choose the correct answer from the options given below.
↻ Repeated question — also appeared in
2021 (3 sets)
- A. Statement I is correct but Statement II is false.
- B. Statement I is incorrect but Statement II is true.
- C. Both Statement I and Statement II are true.
- D. Both Statement I and Statement II are false.
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Q84
CHEMISTRY
Unit 10: p-Block Elements
The structures of beryllium chloride in solid state and vapour phase, are :
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- A. Dimer and Linear, respectively
- B. Chain in both
- C. Chain and dimer, respectively
- D. Linear in both
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Q85
PHYSICS
Unit 15: Electromagnetic Waves
A particular station of All India Radio, New Delhi, broadcasts on a frequency of 1,368 kHz (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is : [speed of light, c=3.0×108 ms−1]
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- A. 2192 m
- B. 21.92 cm
- C. 219.3 m
- D. 219.2 m
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Q86
CHEMISTRY
Unit 10: p-Block Elements
In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it ?
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- A. NH3 < PH3 < AsH3 < SbH3 : Increasing acidic character
- B. CO2 < SiO2 < SnO2 < PbO2 : Increasing oxidizing power
- C. HF < HCl < HBr < HI : Increasing acidic strength
- D. H2O < H2S < H2Se < H2Te : Increasing pKa values
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Q87
CHEMISTRY
Unit 4: Chemical Thermodynamics
For irreversible expansion of an ideal gas under isothermal condition, the correct option is :
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- A. ∆U=0, ∆Stotal ≠ 0
- B. ∆U ≠ 0, ∆Stotal = 0
- C. ∆U=0, ∆Stotal = 0
- D. ∆U ≠ 0, ∆Stotal ≠ 0
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Q88
CHEMISTRY
Unit 2: Atomic Structure
From the following pairs of ions which one is not an iso-electronic pair ?
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- A. Mn2+, Fe3+
- B. Fe2+, Mn2+
- C. O2−, F−
- D. Na+, Mg2+
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Q89
CHEMISTRY
Unit 15: Hydrocarbons
Consider the following reaction and identify the missing reagent/chemical:
CH3CH2COO-Na+ + NaOH --(Heat)--> CH4 + Na2CO3
↻ Repeated question — also appeared in
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- A. CaO
- B. DIBAL-H
- C. B2H6
- D. Red Phosphorus
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Q90
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Which of the following molecules is non-polar in nature ?
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- A. SbCl5
- B. NO2
- C. POCl3
- D. CH2O
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Q90
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Which of the following molecules is non-polar in nature?
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2021 (11 sets)
- A. SbCl5
- B. NO2
- C. POCl3
- D. CH2O
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Q91
CHEMISTRY
Unit 12: Coordination Compounds
Match List - I with List - II.
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- A. (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
- B. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
- C. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
- D. (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
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Q91
CHEMISTRY
Unit 12: Coordination Compounds
Match List - I with List - II.
(a) [Fe(CN)6]3- (i) 5.92 BM
(b) [Fe(H2O)6]3+ (ii) 0 BM
(c) [Fe(CN)6]4- (iii) 4.90 BM
(d) [Fe(H2O)6]2+ (iv) 1.73 BM
- A. (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
- B. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
- C. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
- D. (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
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Q92
CHEMISTRY
Unit 5: Solutions
The correct option for the value of vapour pressure of a solution at 45°C with benzene to octane in molar ratio 3 : 2 is : [At 45°C vapour pressure of benzene is 280 mm Hg and that of octane is 420 mm Hg. Assume Ideal gas]
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 336 mm of Hg
- B. 350 mm of Hg
- C. 160 mm of Hg
- D. 168 mm of Hg
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Q92
CHEMISTRY
Unit 5: Solutions
The correct option for the value of vapour pressure of a solution at 45°C with benzene to octane in molar ratio 3 : 2 is: (At 45°C vapour pressure of benzene is 280 mm Hg and that of octane is 420 mm Hg. Assume Ideal gas)
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 336 mm of Hg
- B. 350 mm of Hg
- C. 160 mm of Hg
- D. 168 mm of Hg
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Q95
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The molar conductivity of 0.007 M acetic acid is 20 S cm² mol⁻¹. What is the dissociation constant of acetic acid? Given: Λ°(H+) = 350 S cm² mol⁻¹, Λ°(CH3COO-) = 50 S cm² mol⁻¹.
↻ Repeated question — also appeared in
2021 (7 sets)
- A. 1.75×10⁻⁵ mol L⁻¹
- B. 2.50×10⁻⁵ mol L⁻¹
- C. 1.75×10⁻⁴ mol L⁻¹
- D. 2.50×10⁻⁴ mol L⁻¹
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Q96
PHYSICS
Unit 9: Kinetic Theory of Gases
Choose the correct option for the total pressure (in atm.) in a mixture of 4 g O2 and 2 g H2 confined in a total volume of one litre at 0°C. Given R=0.082 L atm mol⁻¹ K⁻¹, T=273 K.
↻ Repeated question — also appeared in
2021 (8 sets)
- A. 25.18
- B. 26.02
- C. 2.518
- D. 2.602
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Q97
CHEMISTRY
Unit 8: Chemical Kinetics
The slope of Arrhenius Plot ln k v/s 1/T of first order reaction is -5×10³ K. The value of Ea of the reaction is. Given R=8.314 JK⁻¹ mol⁻¹.
↻ Repeated question — also appeared in
2021 (8 sets)
- A. 166 kJ mol⁻¹
- B. -83 kJ mol⁻¹
- C. 41.5 kJ mol⁻¹
- D. 83.0 kJ mol⁻¹
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Q99
BIOLOGY
Unit 10: Ecology and Environment
Match List - I with List - II.
(a) 2SO2(g) + O2(g) -> 2SO3(g) (i) Acid rain
(b) HOCl(g) -> OH + Cl (iii) Ozone depletion
(c) CaCO3 + H2SO4 -> CaSO4 + H2O + CO2 (iv) Tropospheric pollution
(d) NO2(g) -> NO(g) + O(g) (ii) Smog
- A. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
- B. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
- C. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
- D. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
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Q101
BIOLOGY
Unit 3: Cell Structure and Function
When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as:
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- A. Sub-metacentric
- B. Acrocentric
- C. Metacentric
- D. Telocentric
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Q102
BIOLOGY
Unit 10: Ecology and Environment
In the equation GPP - R = NPP, R represents:
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- A. Environment factor
- B. Respiration losses
- C. Radiant energy
- D. Retardation factor
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Q104
BIOLOGY
Unit 6: Reproduction
Which of the following stages of meiosis involves division of centromere?
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- A. Anaphase II
- B. Telophase II
- C. Metaphase I
- D. Metaphase II
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Q104
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following stages of meiosis involves division of centromere?
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2021 (10 sets)
- A. Anaphase II
- B. Telophase II
- C. Metaphase I
- D. Metaphase II
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Q105
BIOLOGY
Unit 3: Cell Structure and Function
Match List - I with List - II: (a) Cristae, (b) Thylakoids, (c) Centromere, (d) Cisternae with (i) Primary constriction in chromosome, (ii) Disc-shaped sacs in Golgi apparatus, (iii) Infoldings in mitochondria, (iv) Flattened membranous sacs in stroma of plastids.
- A. (1) (iii)(iv)(i)(ii)
- B. (2) (ii)(iii)(iv)(i)
- C. (3) (iv)(iii)(ii)(i)
- D. (4) (i)(iv)(iii)(ii)
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Q106
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Diadelphous stamens are found in:
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- A. Pea
- B. China rose and citrus
- C. China rose
- D. Citrus
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Q106
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Diadelphous stamens are found in :
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2021 (11 sets)
- A. Pea
- B. China rose and citrus
- C. China rose
- D. Citrus
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Q107
BIOLOGY
Unit 6: Reproduction
The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is:
↻ Repeated question — also appeared in
2021 (11 sets)
- A. Chasmogamy
- B. Cleistogamy
- C. Xenogamy
- D. Geitonogamy
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Q107
BIOLOGY
Unit 6: Reproduction
The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is :
↻ Repeated question — also appeared in
2021 (11 sets)
- A. Chasmogamy
- B. Cleistogamy
- C. Xenogamy
- D. Geitonogamy
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Q108
BIOLOGY
Unit 4: Plant Physiology
The plant hormone used to destroy weeds in a field is:
↻ Repeated question — also appeared in
2021 (11 sets)
- A. 2, 4-D
- B. IBA
- C. IAA
- D. NA
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Q108
BIOLOGY
Unit 4: Plant Physiology
The plant hormone used to destroy weeds in a field is :
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2021 (11 sets)
- A. 2, 4-D
- B. IBA
- C. IAA
- D. NAA
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Q109
BIOLOGY
Unit 1: Diversity in Living World
Which of the following algae contains mannitol as reserve food material?
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- A. Volvox
- B. Ulothrix
- C. Ectocarpus
- D. Gracilaria
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Q110
BIOLOGY
Unit 9: Biotechnology and Its Applications
DNA strands on a gel stained with ethidium bromide when viewed under UV radiation, appear as :
↻ Repeated question — also appeared in
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- A. Dark red bands
- B. Bright blue bands
- C. Yellow bands
- D. Bright orange bands
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Q111
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following are not secondary metabolites in plants?
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2021 (6 sets)
- A. Vinblastin, curcumin
- B. Rubber, gums
- C. Morphine, codeine
- D. Amino acids, glucose
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Q112
BIOLOGY
Unit 10: Ecology and Environment
Inspite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?
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2021 (9 sets)
- A. Mutualism
- B. Predation
- C. Resource partitioning
- D. Competitive release
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Q113
BIOLOGY
Unit 10: Ecology and Environment
Amensalism can be represented as :
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- A. Species A (−) ; Species B (−)
- B. Species A (1) ; Species B (0)
- C. Species A (−) ; Species B (0)
- D. Species A (1) ; Species B (1)
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Q114
BIOLOGY
Unit 6: Reproduction
A typical angiosperm embryo sac at maturity is :
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- A. 7-nucleate and 7-celled
- B. 8-nucleate and 8-celled
- C. 8-nucleate and 7-celled
- D. 7-nucleate and 8-celled
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Q115
BIOLOGY
Unit 4: Plant Physiology
The first stable product of CO2 fixation in sorghum is :
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- A. Succinic acid
- B. Phosphoglyceric acid
- C. Pyruvic acid
- D. Oxaloacetic acid
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Q116
BIOLOGY
Unit 4: Plant Physiology
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called :
↻ Repeated question — also appeared in
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- A. Plasticity
- B. Maturity
- C. Elasticity
- D. Flexibility
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Q117
BIOLOGY
Unit 8: Biology and Human Welfare
Match List - I with List - II: (a) Protoplast fusion, (b) Plant tissue culture, (c) Meristem culture, (d) Micropropagation with (i) Totipotency, (ii) Pomato, (iii) Somaclones, (iv) Virus free plants.
- A. (1) (iii)(iv)(i)(ii)
- B. (2) (iv)(iii)(ii)(i)
- C. (3) (iii)(iv)(ii)(i)
- D. (4) (ii)(i)(iv)(iii)
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Q118
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following is not an application of PCR (Polymerase Chain Reaction)?
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- A. Purification of isolated protein
- B. Detection of gene mutation
- C. Molecular diagnosis
- D. Gene amplification
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Q119
BIOLOGY
Unit 1: Diversity in Living World
Which of the following algae produce Carrageen?
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- A. Red algae
- B. Blue-green algae
- C. Green algae
- D. Brown algae
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Q120
BIOLOGY
Unit 7: Genetics and Evolution
The production of gametes by the parents, formation of zygotes, the F1 and F2 plants, can be understood from a diagram called :
↻ Repeated question — also appeared in
2021 (10 sets)
- A. Punnett square
- B. Net square
- C. Bullet square
- D. Punch square
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Q121
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following is an incorrect statement?
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- A. The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm.
- B. Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm.
- C. Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles.
- D. Microbodies are present both in plant and animal cells.
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Q122
BIOLOGY
Unit 1: Diversity in Living World
Gemmae are present in :
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- A. Some Gymnosperms
- B. Some Liverworts
- C. Mosses
- D. Pteridophytes
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Q122
BIOLOGY
Unit 1: Diversity in Living World
Gemmae are present in :
↻ Repeated question — also appeared in
2021 (11 sets)
- A. Some Gymnosperms
- B. Some Liverworts
- C. Mosses
- D. Pteridophytes
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Q123
BIOLOGY
Unit 7: Genetics and Evolution
Complete the flow chart on central dogma.
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- A. (a)-Replication; (b)-Transcription; (c)-Translation; (d)-Protein
- B. (a)-Transduction; (b)-Translation; (c)-Replication; (d)-Protein
- C. (a)-Replication; (b)-Transcription; (c)-Transduction; (d)-Protein
- D. (a)-Translation; (b)-Replication; (c)-Transcription; (d)-Transduction
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Q124
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction)?
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2021 (11 sets)
- A. Extension, Denaturation, Annealing
- B. Annealing, Denaturation, Extension
- C. Denaturation, Annealing, Extension
- D. Denaturation, Extension, Annealing
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Q124
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction) ?
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2021 (11 sets)
- A. Extension, Denaturation, Annealing
- B. Annealing, Denaturation, Extension
- C. Denaturation, Annealing, Extension
- D. Denaturation, Extension, Annealing
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Q125
BIOLOGY
Unit 9: Biotechnology and Its Applications
During the purification process for recombinant DNA technology, addition of chilled ethanol precipitates out :
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- A. Histones
- B. Polysaccharides
- C. RNA
- D. DNA
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Q125
BIOLOGY
Unit 9: Biotechnology and Its Applications
During the purification process for recombinant DNA technology, addition of chilled ethanol precipitates out :
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- A. Histones
- B. Polysaccharides
- C. RNA
- D. DNA
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Q126
BIOLOGY
Unit 8: Biology and Human Welfare
Mutations in plant cells can be induced by :
- A. Gamma rays
- B. Zeatin
- C. Kinetin
- D. Infrared rays
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Q126
BIOLOGY
Unit 4: Plant Physiology
Mutations in plant cells can be induced by :
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2021 (5 sets)
- A. Gamma rays
- B. Zeatin
- C. Kinetin
- D. Infrared rays
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Q127
BIOLOGY
Unit 10: Ecology and Environment
Which of the following statements is not correct ?
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2021 (10 sets)
- A. Pyramid of energy is always upright.
- B. Pyramid of numbers in a grassland ecosystem is upright.
- C. Pyramid of biomass in sea is generally inverted.
- D. Pyramid of biomass in sea is generally upright.
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Q128
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Match List - I with List - II.
(a) Lenticels (i) Phellogen
(b) Cork cambium (ii) Suberin deposition
(c) Secondary cortex (iii) Exchange of gases
(d) Cork (iv) Phelloderm
Choose the correct answer from the options given below.
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2021 (5 sets)
- A. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
- B. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
- C. (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
- D. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
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Q129
BIOLOGY
Unit 4: Plant Physiology
The site of perception of light in plants during photoperiodism is :
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2021 (10 sets)
- A. Axillary bud
- B. Leaf
- C. Shoot apex
- D. Stem
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Q130
BIOLOGY
Unit 7: Genetics and Evolution
The factor that leads to Founder effect in a population is :
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2021 (10 sets)
- A. Mutation
- B. Genetic drift
- C. Natural selection
- D. Genetic recombination
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Q131
BIOLOGY
Unit 10: Ecology and Environment
The amount of nutrients, such as carbon, nitrogen, phosphorus and calcium present in the soil at any given time, is referred as :
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2021 (10 sets)
- A. Standing state
- B. Standing crop
- C. Climax
- D. Climax community
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Q132
BIOLOGY
Unit 4: Plant Physiology
Match List - I with List - II.
(a) Cohesion (i) More attraction in liquid phase
(b) Adhesion (ii) Mutual attraction among water molecules
(c) Surface tension (iii) Water loss in liquid phase
(d) Guttation (iv) Attraction towards polar surfaces
Choose the correct answer from the options given below.
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2021 (5 sets)
- A. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
- B. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
- C. (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
- D. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
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Q133
BIOLOGY
Unit 9: Biotechnology and Its Applications
When gene targetting involving gene amplification is attempted in an individual’s tissue to treat disease, it is known as :
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2021 (9 sets)
- A. Molecular diagnosis
- B. Safety testing
- C. Biopiracy
- D. Gene therapy
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Q134
BIOLOGY
Unit 1: Diversity in Living World
Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as :
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- A. Homosporous
- B. Heterosporous
- C. Homosorus
- D. Heterosorus
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Q135
BIOLOGY
Unit 1: Diversity in Living World
Which of the following plants is monoecious ?
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2021 (1 set)
- A. Marchantia polymorpha
- B. Cycas circinalis
- C. Carica papaya
- D. Chara
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Q136
BIOLOGY
Unit 3: Cell Structure and Function
What is the role of RNA polymerase III in the process of transcription in eukaryotes ?
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2021 (3 sets)
- A. Transcribes precursor of mRNA
- B. Transcribes only snRNAs
- C. Transcribes rRNAs (28S, 18S and 5.8S)
- D. Transcribes tRNA, 5s rRNA and snRNA
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Q138
BIOLOGY
Unit 4: Plant Physiology
Match Column - I with Column - II.
(a) Nitrococcus (i) Denitrification
(b) Rhizobium (ii) Conversion of ammonia to nitrite
(c) Thiobacillus (iii) Conversion of nitrite to nitrate
(d) Nitrobacter (iv) Conversion of atmospheric nitrogen to ammonia
Choose the correct answer from options given below.
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2021 (4 sets)
- A. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
- B. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
- C. (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
- D. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
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Q139
BIOLOGY
Unit 9: Biotechnology and Its Applications
Plasmid pBR322 has PstI restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is used for inserting a gene for β-galactoside production and the recombinant plasmid is inserted in an E.coli strain:
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2021 (10 sets)
- A. it will lead to lysis of host cell.
- B. it will be able to produce a novel protein with dual ability.
- C. it will not be able to confer ampicillin resistance to the host cell.
- D. the transformed cells will have the ability to resist ampicillin as well as produce β-galactoside.
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Q139
BIOLOGY
Unit 9: Biotechnology and Its Applications
Plasmid pBR322 has PstI restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is used for inserting a gene for β-galactoside production and the recombinant plasmid is inserted in an E.coli strain
↻ Repeated question — also appeared in
2021 (10 sets)
- A. it will lead to lysis of host cell.
- B. it will be able to produce a novel protein with dual ability.
- C. it will not be able to confer ampicillin resistance to the host cell.
- D. the transformed cells will have the ability to resist ampicillin as well as produce β-galactoside.
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Q141
BIOLOGY
Unit 4: Plant Physiology
Which of the following statements is incorrect ?
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2021 (10 sets)
- A. ATP is synthesized through complex V.
- B. Oxidation-reduction reactions produce proton gradient in respiration.
- C. During aerobic respiration, role of oxygen is limited to the terminal stage.
- D. In ETC (Electron Transport Chain), one molecule of NADH+H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules.
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Q142
CHEMISTRY
Unit 19: Biomolecules
Match List - I with List - II. List I: (a) Protein, (b) Unsaturated fatty acid, (c) Nucleic acid, (d) Polysaccharide. List II: (i) C=C double bonds, (ii) Phosphodiester bonds, (iii) Glycosidic bonds, (iv) Peptide bonds.
- A. (1)(ii)(i)(iv)(iii)
- B. (2)(iv)(iii)(i)(ii)
- C. (3)(iv)(i)(ii)(iii)
- D. (4)(i)(iv)(iii)(ii)
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Q143
BIOLOGY
Unit 7: Genetics and Evolution
DNA fingerprinting involves identifying differences in some specific regions in DNA sequence, called as :
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2021 (9 sets)
- A. Single nucleotides
- B. Polymorphic DNA
- C. Satellite DNA
- D. Repetitive DNA
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Q144
BIOLOGY
Unit 3: Cell Structure and Function
Match List - I with List - II. List I: (a) S phase, (b) G2 phase, (c) Quiescent stage, (d) G1 phase. List II: (i) Proteins are synthesized, (ii) Inactive phase, (iii) Interval between mitosis and initiation of DNA replication, (iv) DNA replication.
↻ Repeated question — also appeared in
2021 (1 set)
- A. (1)(iv)(i)(ii)(iii)
- B. (2)(ii)(iv)(iii)(i)
- C. (3)(iii)(ii)(i)(iv)
- D. (4)(iv)(ii)(iii)(i)
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Q145
BIOLOGY
Unit 7: Genetics and Evolution
Identify the correct statement.
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2021 (9 sets)
- A. The coding strand in a transcription unit is copied to an mRNA.
- B. Split gene arrangement is characteristic of prokaryotes.
- C. In capping, methyl guanosine triphosphate is added to the 3' end of hnRNA.
- D. RNA polymerase binds with Rho factor to terminate the process of transcription in bacteria.
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Q147
BIOLOGY
Unit 4: Plant Physiology
Which of the following statements is incorrect ?
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2021 (10 sets)
- A. Grana lamellae have both PS I and PS II.
- B. Cyclic photophosphorylation involves both PS I and PS II.
- C. Both ATP and NADPH+H+ are synthesized during non-cyclic photophosphorylation.
- D. Stroma lamellae have PS I only and lack NADP reductase.
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Q148
BIOLOGY
Unit 9: Biotechnology and Its Applications
Now a days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise its complimentary DNA in a clone of cells, followed by its detection using autoradiography because :
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2021 (6 sets)
- A. mutated gene does not appear on a photographic film as the probe has no complementarity with it.
- B. mutated gene does not appear on photographic film as the probe has complementarity with it.
- C. mutated gene partially appears on a photographic film.
- D. mutated gene completely and clearly appears on a photographic film.
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Q149
BIOLOGY
Unit 10: Ecology and Environment
In the exponential growth equation Nt = Noert, e represents :
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- A. The base of natural logarithms
- B. The base of geometric logarithms
- C. The base of number logarithms
- D. The base of exponential logarithms
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Q149
BIOLOGY
Unit 4: Plant Physiology
In the exponential growth equation Nt = Noert, e represents:
- A. The base of natural logarithms
- B. The base of geometric logarithms
- C. The base of number logarithms
- D. The base of exponential logarithms
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Q150
BIOLOGY
Unit 6: Reproduction
In some members of which of the following pairs of families, pollen grains retain their viability for months after release?
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2021 (8 sets)
- A. Poaceae ; Solanaceae
- B. Rosaceae ; Leguminosae
- C. Poaceae ; Rosaceae
- D. Poaceae ; Leguminosae
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Q151
BIOLOGY
Unit 8: Biology and Human Welfare
Match List - I with List - II. (a) Aspergillus niger, (b) Acetobacter aceti, (c) Clostridium butylicum, (d) Lactobacillus. List II: (i) Acetic Acid, (ii) Lactic Acid, (iii) Citric Acid, (iv) Butyric Acid.
↻ Repeated question — also appeared in
2021 (1 set)
- A. (1)(ii)(iii)(i)(iv)
- B. (2)(iv)(ii)(i)(iii)
- C. (3)(iii)(i)(iv)(ii)
- D. (4)(i)(ii)(iii)(iv)
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Q151
BIOLOGY
Unit 8: Biology and Human Welfare
Match List - I with List - II.
(a) Aspergillus niger (i) Acetic Acid
(b) Acetobacter aceti (ii) Lactic Acid
(c) Clostridium butylicum (iii) Citric Acid
(d) Lactobacillus (iv) Butyric Acid
↻ Repeated question — also appeared in
2021 (7 sets)
- A. (1)(ii)(iii)(i)(iv)
- B. (2)(iv)(ii)(i)(iii)
- C. (3)(iii)(i)(iv)(ii)
- D. (4)(i)(ii)(iii)(iv)
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Q152
CHEMISTRY
Unit 2: Atomic Structure
If Adenine makes 30% of the DNA molecule, what will be the percentage of Thymine, Guanine and Cytosine in it ?
- A. T : 30 ; G : 20 ; C : 20
- B. T : 20 ; G : 25 ; C : 25
- C. T : 20 ; G : 30 ; C : 20
- D. T : 20 ; G : 20 ; C : 30
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Q152
BIOLOGY
Unit 3: Cell Structure and Function
If Adenine makes 30% of the DNA molecule, what will be the percentage of Thymine, Guanine and Cytosine in it?
- A. T : 30 ; G : 20 ; C : 20
- B. T : 20 ; G : 25 ; C : 25
- C. T : 20 ; G : 30 ; C : 20
- D. T : 20 ; G : 20 ; C : 30
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Q153
BIOLOGY
Unit 5: Human Physiology
Which one of the following is an example of Hormone releasing IUD?
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2021 (2 sets)
- A. Cu 7
- B. Multiload 375
- C. CuT
- D. LNG 20
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Q154
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Which of the following characteristics is incorrect with respect to cockroach?
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2021 (9 sets)
- A. In females, 7th-9th sterna together form a genital pouch.
- B. 10th abdominal segment in both sexes, bears a pair of anal cerci.
- C. A ring of gastric caeca is present at the junction of midgut and hind gut.
- D. Hypopharynx lies within the cavity enclosed by the mouth parts.
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Q155
BIOLOGY
Unit 8: Biology and Human Welfare
Identify the incorrect pair.
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2021 (5 sets)
- A. Lectins - Concanavalin A
- B. Drugs - Ricin
- C. Alkaloids - Codeine
- D. Toxin - Abrin
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Q156
BIOLOGY
Unit 5: Human Physiology
Veneral diseases can spread through:
(a) Using sterile needles
(b) Transfusion of blood from infected person
(c) Infected mother to foetus
(d) Kissing
(e) Inheritance
Choose the correct answer from the options given below.
↻ Repeated question — also appeared in
2021 (5 sets)
- A. (b) and (c) only
- B. (a) and (c) only
- C. (a), (b) and (c) only
- D. (b), (c) and (d) only
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Q157
BIOLOGY
Unit 5: Human Physiology
Chronic auto immune disorder affecting neuro muscular junction leading to fatigue, weakening and paralysis of skeletal muscle is called as:
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2021 (9 sets)
- A. Myasthenia gravis
- B. Gout
- C. Arthritis
- D. Muscular dystrophy
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Q158
BIOLOGY
Unit 9: Biotechnology and Its Applications
With regard to insulin choose correct options.
(a) C-peptide is not present in mature insulin.
(b) The insulin produced by rDNA technology has C-peptide.
(c) The pro-insulin has C-peptide.
(d) A-peptide and B-peptide of insulin are interconnected by disulphide bridges.
Choose the correct answer from the options given below.
↻ Repeated question — also appeared in
2021 (8 sets)
- A. (a), (c) and (d) only
- B. (a) and (d) only
- C. (b) and (d) only
- D. (b) and (c) only
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Q159
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Which of the following statements wrongly represents the nature of smooth muscle?
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2021 (8 sets)
- A. Communication among the cells is performed by intercalated discs
- B. These muscles are present in the wall of blood vessels
- C. These muscle have no striations
- D. They are involuntary muscles
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Q160
BIOLOGY
Unit 3: Cell Structure and Function
The centriole undergoes duplication during:
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2021 (9 sets)
- A. Metaphase
- B. G2 phase
- C. S-phase
- D. Prophase
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Q161
BIOLOGY
Unit 10: Ecology and Environment
Dobson units are used to measure thickness of:
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2021 (9 sets)
- A. Ozone
- B. Troposphere
- C. CFCs
- D. Stratosphere
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Q162
BIOLOGY
Unit 3: Cell Structure and Function
The organelles that are included in the endomembrane system are:
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- A. Golgi complex, Mitochondria, Ribosomes and Lysosomes
- B. Golgi complex, Endoplasmic reticulum, Mitochondria and Lysosomes
- C. Endoplasmic reticulum, Mitochondria, Ribosomes and Lysosomes
- D. Endoplasmic reticulum, Golgi complex, Lysosomes and Vacu Lysosomes and VacuLysosomes and Vacuoles
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Q163
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following RNAs is not required for the synthesis of protein?
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2021 (2 sets)
- A. rRNA
- B. siRNA
- C. mRNA
- D. tRNA
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Q164
BIOLOGY
Unit 1: Diversity in Living World
Match List - I with List - II.
(a) Metamerism (i) Coelenterata
(b) Canal system (ii) Ctenophora
(c) Comb plates (iii) Annelida
(d) Cnidoblasts (iv) Porifera
↻ Repeated question — also appeared in
2021 (7 sets)
- A. (1)(iii)(iv)(ii)(i)
- B. (2)(iv)(i)(ii)(iii)
- C. (3)(iv)(iii)(i)(ii)
- D. (4)(iii)(iv)(i)(ii)
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Q165
BIOLOGY
Unit 3: Cell Structure and Function
Which stage of meiotic prophase shows terminalisation of chiasmata as its distinctive feature?
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2021 (9 sets)
- A. Diakinesis
- B. Pachytene
- C. Leptotene
- D. Zygotene
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Q165
BIOLOGY
Unit 3: Cell Structure and Function
Which stage of meiotic prophase shows terminalisation of chiasmata as its distinctive feature?
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2021 (9 sets)
- A. Diakinesis
- B. Pachytene
- C. Leptotene
- D. Zygotene
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Q166
BIOLOGY
Unit 5: Human Physiology
Persons with ‘AB’ blood group are called as “Universal recipients”. This is due to:
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2021 (10 sets)
- A. Presence of antibodies, anti-A and anti-B, on RBCs
- B. Absence of antibodies, anti-A and anti-B, in plasma
- C. Absence of antigens A and B on the surface of RBCs
- D. Absence of antigens A and B in plasma
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Q166
BIOLOGY
Unit 5: Human Physiology
Persons with ‘AB’ blood group are called as “Universal recipients”. This is due to:
↻ Repeated question — also appeared in
2021 (10 sets)
- A. Presence of antibodies, anti-A and anti-B, on RBCs
- B. Absence of antibodies, anti-A and anti-B, in plasma
- C. Absence of antigens A and B on the surface of RBCs
- D. Absence of antigens A and B in plasma
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Q167
BIOLOGY
Unit 5: Human Physiology
The partial pressures (in mm Hg) of oxygen (O2) and carbon dioxide (CO2) at alveoli (the site of diffusion) are:
↻ Repeated question — also appeared in
2021 (10 sets)
- A. pO2=95 and pCO2=40
- B. pO2=159 and pCO2=0.3
- C. pO2=104 and pCO2=40
- D. pO2=40 and pCO2=45
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Q167
BIOLOGY
Unit 5: Human Physiology
The partial pressures (in mm Hg) of oxygen (O2) and carbon dioxide (CO2) at alveoli (the site of diffusion) are:
↻ Repeated question — also appeared in
2021 (10 sets)
- A. pO2 = 95 and pCO2 = 40
- B. pO2 = 159 and pCO2 = 0.3
- C. pO2 = 104 and pCO2 = 40
- D. pO2 = 40 and pCO2 = 45
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Q168
BIOLOGY
Unit 5: Human Physiology
Succus entericus is referred to as:
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2021 (10 sets)
- A. Gastric juice
- B. Chyme
- C. Pancreatic juice
- D. Intestinal juice
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Q168
BIOLOGY
Unit 5: Human Physiology
Succus entericus is referred to as:
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2021 (10 sets)
- A. Gastric juice
- B. Chyme
- C. Pancreatic juice
- D. Intestinal juice
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Q169
BIOLOGY
Unit 6: Reproduction
Receptors for sperm binding in mammals are present on:
↻ Repeated question — also appeared in
2021 (10 sets)
- A. Perivitelline space
- B. Zona pellucida
- C. Corona radiata
- D. Vitelline membrane
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Q169
BIOLOGY
Unit 6: Reproduction
Receptors for sperm binding in mammals are present on:
↻ Repeated question — also appeared in
2021 (10 sets)
- A. Perivitelline space
- B. Zona pellucida
- C. Corona radiata
- D. Vitelline membrane
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Q170
BIOLOGY
Unit 1: Diversity in Living World
Match the following: (a) Physalia (i) Pearl oyster (b) Limulus (ii) Portuguese Man of War (c) Ancylostoma (iii) Living fossil (d) Pinctada (iv) Hookworm
↻ Repeated question — also appeared in
2021 (6 sets)
- A. (1)(ii)(iii)(iv)(i)
- B. (2)(i)(iv)(iii)(ii)
- C. (3)(ii)(iii)(i)(iv)
- D. (4)(iv)(i)(iii)(ii)
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Q171
BIOLOGY
Unit 7: Genetics and Evolution
In a cross between a male and female, both heterozygous for sickle cell anaemia gene, what percentage of the progeny will be diseased?
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2021 (9 sets)
- A. 25%
- B. 100%
- C. 50%
- D. 75%
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Q172
BIOLOGY
Unit 1: Diversity in Living World
Read the following statements: (a) Metagenesis is observed in Helminths. (b) Echinoderms are triploblastic and coelomate animals. (c) Round worms have organ-system level of body organization. (d) Comb plates present in ctenophores help in digestion. (e) Water vascular system is characteristic of Echinoderms. Choose the correct answer from the options given below.
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2021 (8 sets)
- A. (a), (d) and (e) are correct
- B. (b), (c) and (e) are correct
- C. (c), (d) and (e) are correct
- D. (a), (b) and (c) are correct
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Q173
BIOLOGY
Unit 5: Human Physiology
Sphincter of oddi is present at:
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2021 (9 sets)
- A. Gastro-oesophageal junction
- B. Junction of jejunum and duodenum
- C. Ileo-caecal junction
- D. Junction of hepato-pancreatic duct and duodenum
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Q174
BIOLOGY
Unit 5: Human Physiology
Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?
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2021 (9 sets)
- A. Epinephrine
- B. Thrombokinase
- C. Thrombin
- D. Renin
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Q175
BIOLOGY
Unit 1: Diversity in Living World
Which one of the following belongs to the family Muscidae?
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2021 (9 sets)
- A. Cockroach
- B. House fly
- C. Fire fly
- D. Grasshopper
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Q176
BIOLOGY
Unit 3: Cell Structure and Function
The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number of chromosomes at G1 phase is 8, what would be the number of chromosomes after S phase?
↻ Repeated question — also appeared in
2021 (9 sets)
- A. 4
- B. 32
- C. 8
- D. 16
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Q177
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following is not an objective of Biofortification in crops?
↻ Repeated question — also appeared in
2021 (9 sets)
- A. Improve vitamin content
- B. Improve micronutrient and mineral content
- C. Improve protein content
- D. Improve resistance to diseases
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Q178
BIOLOGY
Unit 9: Biotechnology and Its Applications
A specific recognition sequence identified by endonucleases to make cuts at specific positions within the DNA is:
↻ Repeated question — also appeared in
2021 (9 sets)
- A. Palindromic Nucleotide sequences
- B. Poly(A) tail sequences
- C. Degenerate primer sequence
- D. Okazaki sequences
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Q179
BIOLOGY
Unit 6: Reproduction
Match List - I with List - II: (a) Vaults (i) Entry of sperm through Cervix is blocked (b) IUDs (ii) Removal of Vas deferens (c) Vasectomy (iii) Phagocytosis of sperms within the Uterus (d) Tubectomy (iv) Removal of fallopian tube
↻ Repeated question — also appeared in
2021 (6 sets)
- A. (1)(ii)(iv)(iii)(i)
- B. (2)(iii)(i)(iv)(ii)
- C. (3)(iv)(ii)(i)(iii)
- D. (4)(i)(iii)(ii)(iv)
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