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Question: 1: The dimensions \left[M L T^{-2} A^{-2}\right] belong to the
(1) Magnetic permeability
(2) Electric permittivity
(3) Magnetic flux
(4) Self inductance
Answer: Option (1)
Question: 2: An ideal gas undergoes four different processes from the same initial state as shown in the figure below. Those processes are adiabatic, isothermal, isobaric and isochoric. The curve which represents the adiabatic process among 1,2,3 and 4 is
(1) 3
(2) 4
(3) 1
(4) 2
Answer: Option (4)
Question: 3: A biconvex lens has radii of curvature, 20 cm each. If the refractive index of the material of the lens is 1.5 , the power of the lens is
(1) +5 \mathrm{D}
(2) Infinity
(3) +2 \mathrm{D}
(4) +20 D
Answer: Option (1)
Question: 4: The ratio of the radius of gyration of a thin uniform disc about an axis passing through its centre and normal to its plane to the radius of gyration of the disc about its diameter is
(1) 4: 1
(2) 1: \sqrt{2}
(3) 2: 1
(4) \sqrt{2}: 1
Answer: Option (4)
Question: 5: The angle between the electric lines of force and the equipotential surface is
(1) 90^{\circ}
(2) 180^{\circ}
(3) 0^{\circ}
(4) 45^{\circ}
Answer: Option (1)
Question: 6: Two objects of mass 10 kg and 20 kg respectively are connected to the two ends of a rigid rod of length 10 m with negligible mass. The distance of the center of mass of the system from the 10 kg mass is
(1) 10 m
(2) 5 m
(3) \frac{10}{3} \mathrm{~m}
(4) \frac{20}{3} \mathrm{~m}
Answer: Option (4)
Question: 7: The ratio of the distances travelled by a freely falling body in the 1^{\text {st }}, 2^{\text {nd }}, 3^{\text {rd }} and 4^{\text {th }} second
(1) 1: 3: 5: 7
(2) 1: 1: 1: 1
(3) 1: 2: 3: 4
(4) 1: 4: 9: 16
Answer: Option (1)
Question: 8: A spherical ball is dropped in a long column of a highly viscous liquid. The curve in the graph shown, which represents the speed of the ball (v) as a function of time (t) is
(1) C
(2) D
(3) A
(4) B
Answer: Option (4)
Question:9: The angular speed of a fly wheel moving with uniform angular acceleration changes from 1200 rpm to 3120 rpm in 16 seconds. The angular acceleration in \mathrm{rad} / \mathrm{s}^{2} is
(1) 12 \pi
(2) \quad 104 \pi
(3) 2 \pi
(4) \quad 4 \pi
Answer: Option (4)
Question: 10: In a Young’s double slit experiment, a student observes 8 fringes in a certain segment of screen when a monochromatic light of 600 nm wavelength is used. If the wavelength of light is changed to 400 nm , then the number of fringes he would observe in the same region of the screen is
(1) 9
(2) 12
(3) 6
(4) 8
Answer: Option (2)
Question: 11: Match List-I with List-II
| List-I (Electromagnetic waves) | List-II (Wavelength) |
|---|---|
| (a) AM radio waves | (i) 10^{-10} \mathrm{~m} |
| (b) Microwaves | (ii) 10^{2} \mathrm{~m} |
| (c) Infrared radiations | (iii) 10^{-2} \mathrm{~m} |
| (d) X-rays | (iv) 10^{-4} \mathrm{~m} |
Choose the correct answer from the options given below
(1) (a) – (iii), (b) – (iv), (c) – (ii), (d) – (i)
(2) (a) – (ii), (b) – (iii), (c) – (iv), (d) – (i)
(3) (a) – (iv), (b) – (iii), (c) – (ii), (d) – (i)
(4) (a) – (iii), (b) – (ii), (c) – (i), (d) – (iv)
Answer: Option (2)
Question: 12: The graph which shows the variation of the de Broglie wavelength ( \lambda ) of a particle and its associated momentum ( p ) is
Answer: Option (2)
Question: 13: When light propagates through a material medium of relative permittivity \varepsilon_{r} and relative permeability \mu_{r}, the velocity of light, v is given by ( c-velocity of light in vacuum)
(1) v=\sqrt{\frac{\varepsilon_{r}}{\mu_{r}}}
(2) v=\frac{c}{\sqrt{\varepsilon_{r} \mu_{r}}}
(3) v=c
(4) v=\sqrt{\frac{\mu_{r}}{\varepsilon_{r}}}
Answer: Option (2)
Question: 14: If a soap bubble expands, the pressure inside the bubble
(1) Remains the same
(2) Is equal to the atmospheric pressure
(3) Decreases
(4) Increases
Answer: Option (3)
Question: 15: A body of mass 60 g experiences a gravitational force of 3.0 N , when placed at a particular point. The magnitude of the gravitational field intensity at that point is
(1) 20 \mathrm{~N} / \mathrm{kg}
(2) 180 \mathrm{~N} / \mathrm{kg}
(3) 0.05 \mathrm{~N} / \mathrm{kg}
(4) 50 \mathrm{~N} / \mathrm{kg}
Answer: Option (4)
Question: 16: In the given nuclear reaction, the element X is
{ }_{11}^{22} \mathrm{Na} \rightarrow X+e^{+}+v(1) { }_{10}^{22} \mathrm{Ne}
(2) { }_{12}^{22} \mathrm{Mg}
(3) { }_{11}^{23} \mathrm{Na}
(4) { }_{10}^{23} \mathrm{Ne}
Answer: Option (1)
Question: 17: Let T_{1} and T_{2} be the energy of an electron in the first and second excited states of hydrogen atoms, respectively. According to the Bohr’s model of an atom, the ratio T_{1}: T_{2} is
(1) 4: 9
(2) 9: 4
(3) 1: 4
(4) 4: 1
Answer: Option (2)
Question: 18: When two monochromatic lights of frequency, v and \frac{v}{2} are incident on a photoelectric metal, their stopping potential becomes V_{s} and \frac{V_{s}}{2} respectively. The threshold frequency for this metal is
(1) \frac{2}{3} v
(2) \frac{3}{2} v
(3) 2 v
(4) 3 v
Answer: Option (2)
Question: 19: A light ray falls on a glass surface of refractive index \sqrt{3}, at an angle 60^{\circ}. The angle between the refracted and reflected rays would be
(1) 90^{\circ}
(2) 120^{\circ}
(3) 30^{\circ}
(4) 60^{\circ}
Answer: Option (1)
Question: 20: A shell of mass m is at rest initially. It explodes into three fragments having mass in the ratio 2: 2: 1. If the fragments having equal mass fly off along mutually perpendicular directions with speed v, the speed of the third (lighter) fragment is
(1) 2 \sqrt{2} v
(2) 3 \sqrt{2} v
(3) v
(4) \sqrt{2} v
Answer: Option (1)
Question: 21: Two hollow conducting spheres of radii R_{1} and R_{2}\left(R_{1} \gg R_{2}\right) have equal charges. The potential would be
(1) Equal on both the spheres
(2) Dependent on the material property of the sphere
(3) More on bigger sphere
(4) More on smaller sphere
Answer: Option (4)
Question: 22: As the temperature increases, the electrical resistance
(1) Increases for conductors but decreases for semiconductors
(2) Decreases for conductors but increases for semiconductors
(3) Increases for both conductors and semiconductors
(4) Decreases for both conductors and semiconductors
Answer: Option (1)
Question: 23: The displacement-time graphs of two moving particles make angles of 30^{\circ} and 45^{\circ} with the x-axis as shown in the figure. The ratio of their respective velocity is
(1) 1: 2
(2) 1: \sqrt{3}
(3) \sqrt{3}: 1
(4) 1: 1
Answer: Option (2)
Question: 24: A square loop of side 1 m and resistance 1 \Omega is placed in a magnetic field of 0.5 T . If the plane of loop is perpendicular to the direction of magnetic field, the magnetic flux through the loop is
(1) 1 weber
(2) Zero weber
(3) 2 weber
(4) 0.5 weber
Answer: Option (4)
Question: 25:
In the given circuits (a), (b) and (c), the potential drop across the two p-n junctions are equal in
(1) Circuit (c) only
(2) Both circuits (a) and (c)
(3) Circuit (a) only
(4) Circuit (b) only
Answer: Option (2)
Question: 26: A copper wire of length 10 m and radius \left(\frac{10^{-2}}{\sqrt{\pi}}\right) \mathrm{m} has electrical resistance of 10 \Omega. The current density in the wire for an electric field strength of 10(\mathrm{~V} / \mathrm{m}) is
(1) 10^{-5} \mathrm{~A} / \mathrm{m}^{2}
(2) 10^{5} \mathrm{~A} / \mathrm{m}^{2}
(3) 10^{4} \mathrm{~A} / \mathrm{m}^{2}
(4) 10^{6} \mathrm{~A} / \mathrm{m}^{2}
Answer: Option (2)
Question: 27: An electric lift with a maximum load of 2000 kg (lift + passengers) is moving up with a constant speed of 1.5 \mathrm{~ms}^{-1}. The frictional force opposing the motion is 3000 N . The minimum power delivered by the motor to the lift in watts is : \left(g=10 \mathrm{~ms}^{-2}\right)
(1) 34500
(2) 23500
(3) 23000
(4) 20000
Answer: Option (1)
Question: 28: Given below are two statements
Statement 1 : Biot-Savart’s law gives us the expression for the magnetic field strength of an infinitesimal current element (Idl) of a current carrying conductor only.
Statement II: Biot-Savart’s law is analogous to Coulomb’s inverse square law of charge q, with the former being related to the field produce by a scalar source, Idl while the latter being produced by a vector source, q.
In light of above statements choose the most appropriate answer from the options given below
(1) Statement I is correct and Statement II is incorrect
(2) Statement I is incorrect and Statement II is correct
(3) Both Statement I and Statement II are correct
(4) Both Statement I and Statement II are incorrect
Answer: Option (1)
Question: 29: Two resistors of resistance, 100 \Omega and 200 \Omega are connected in parallel in an electrical circuit. The ratio of the thermal energy developed in 100 \Omega to that in 200 \Omega in a given time is
(1) 1: 4
(2) 4: 1
(3) 1: 2
(4) 2: 1
Answer: Option (4)
Question: 30: The energy that will be ideally radiated by a 100 kW transmitter in 1 hour is
(1) 36 \times 10^{5} \mathrm{~J}
(2) 1 \times 10^{5} \mathrm{~J}
(3) 36 \times 10^{7} \mathrm{~J}
(4) 36 \times 10^{4} \mathrm{~J}
Answer: Option (3)
Question: 31: A long solenoid of radius 1 mm has 100 turns per mm . If 1 A current flows in the solenoid, the magnetic field strength at the centre of the solenoid is
(1) 12.56 \times 10^{-4} \mathrm{~T}
(2) 6.28 \times 10^{-4} \mathrm{~T}
(3) 6.28 \times 10^{-2} \mathrm{~T}
(4) 12.56 \times 10^{-2} \mathrm{~T}
Answer: Option (4)
Question: 32: Plane angle and solid angle have
(1) No units and no dimensions
(2) Both units and dimensions
(3) Units but no dimensions
(4) Dimensions but no units
Answer: Option (3)
Question: 33: In half wave rectification, if the input frequency is 60 Hz , then the output frequency would be
(1) 60 Hz
(2) 120 Hz
(3) Zero
(4) 30 Hz
Answer: Option (1)
Question: 34: The peak voltage of the ac source is equal to
(1) \sqrt{2} times the rms value of the ac source
(2) 1 / \sqrt{2} times the rms value of the ac source
(3) The value of voltage supplied to the circuit
(4) The rms value of the ac source
Answer: Option (1)
Question: 35: If the initial tension on a stretched string is doubled, then the ratio of the initial and final speeds of a transverse wave along the string is
(1) 1: \sqrt{2}
(2) 1: 2
(3) 1: 1
(4) \sqrt{2}: 1
Answer: Option (1)
Question: 36: Two pendulums of length 121 cm and 100 cm start vibrating in phase. At some instant, the two are at their mean position in the same phase. The minimum number of vibrations of the shorter pendulum after which the two are again in phase at the mean position is:
(1) 10
(2) 8
(3) 11
(4) 9
Answer: Option (3)
Question: 37: A ball is projected with a velocity, 10 \mathrm{~ms}^{-1}, at an angle of 60^{\circ} with the vertical direction. Its speed at the highest point of its trajectory will be
(1) 5 \mathrm{~ms}^{-1}
(2) 10 \mathrm{~ms}^{-1}
(3) Zero
(4) 5 \sqrt{3} \mathrm{~ms}^{-1}
Answer: Option (4)
Question: 38: A wheatstone bridge is used to determine the value of unknown resistance X by adjusting the variable resistance Y as shown in the figure. For the most precise measurement of X, the resistances P and Q
(1) should be very large and unequal
(2) do not play any significant role
(3) should be approximately equal to 2 X
(4) should be approximately equal and are small
Answer: Option (4)
Question: 39: Two point charges -q and +q are placed at a distance of L, as shown in the figure.
The magnitude of electric field intensity at a distance R(R \gg L) varies as:
(1) \frac{1}{R^{4}}
(2) \frac{1}{R^{6}}
(3) \frac{1}{R^{2}}
(4) \frac{1}{R^{3}}
Answer: Option (4)
Question: 40: Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): The stretching of a spring is determined by the shear modulus of the material of the spring.
Reason (R): A coil spring of copper has more tensile strength than a steel spring of same dimensions.
In the light of the above statements, choose the most appropriate answer from the options given below
(1) (A) is true but (R) is false
(2) (A) is false but (R) is true
(3) Both (A) and (R) are true and (R) is the correct explanation of (A)
(4) Both (A) and (R) are true and (R) is not the correct explanation of (A)
Answer: Option (1)
Question: 41: A nucleus of mass number 189 splits into two nuclei having mass number 125 and 64 . The ratio of radius of two daughter nuclei respectively is
(1) 5: 4
(2) 25: 16
(3) 1: 1
(4) 4: 5
Answer: Option (1)
Question: 42: Match List-I with List-II
| List-I | List-II |
|---|---|
| (a) Gravitational constant (G) | (i) \left[\mathrm{L}^{2} \mathrm{~T}^{-2}\right] |
| (b) Gravitational potential energy | (ii) \left[\mathrm{M}^{-1} \mathrm{~L}^{3} \mathrm{~T}^{-2}\right] |
| (c) Gravitational potential | (iii) [LT^{-1}] |
| (d) Gravitational intensity | (iv) \left[\mathrm{ML}^{2} \mathrm{~T}^{-2}\right] |
Choose the correct answer from the options given below
(1) (a) – (ii), (b) – (iv), (c) – (iii), (d) – (i)
(2) (a) – (iv), (b) – (ii), (c) – (i), (d) – (iii)
(3) (a) – (ii), (b) – (i), (c) – (iv), (d) – (iii)
(4) (a) – (ii), (b) – (iv), (c) – (i), (d) – (iii)
Answer: Option (4)
Question: 43: The area of a rectangular field (in \mathrm{m}^{2} ) of length 55.3 m and breadth 25 m after rounding off the value for correct significant digits is
(1) 1382.5
(2) 14 \times 10^{2}
(3) 138 \times 10^{1}
(4) 1382
Answer: Option (2)
Question: 44: A big circular coil of 1000 turns and average radius 10 m is rotating about its horizontal diameter at 2 \mathrm{rad} \mathrm{s}^{-1}. If the vertical component of earth’s magnetic field at that place is 2 \times 10^{-5} \mathrm{~T} and electrical resistance of the coil is 12.56 \Omega, then the maximum induced current in the coil will be
(1) 1 A
(2) 2 A
(3) 0.25 A
(4) 1.5 A
Answer: Option (1)
Question: 45: Two transparent media A and B are separated by a plane boundary. The speed of light in those media are 1.5 \times 10^{8} \mathrm{~m} / \mathrm{s} and 2.0 \times 10^{8} \mathrm{~m} / \mathrm{s}, respectively. The critical angle for a ray of light for these two media is
(1) \tan ^{-1}(0.500)
(2) \tan ^{-1}(0.750)
(3) \sin ^{-1}(0.500)
(4) \sin ^{-1}(0.750)
Answer: Option (4)
Question: 46: Which of the following statement is not correct about diborane?
(1) The four terminal Hydrogen atoms and the two Boron atoms lie in one plane.
(2) Both the Boron atoms are s p^{2} hybridised.
(3) There are two 3 -centre-2-electron bonds.
(4) The four terminal B-H bonds are two centre two electron bonds.
Answer: Option (2)
Question: 47: Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): ICI is more reactive than I2.
Reason (R): I-CI bond is weaker than I-I bond.
In the light of the above statements, choose the most appropriate answer from the options given below:
(1) (A) is correct but R is not correct
(2) (A) is not correct but (R) is correct
(3) Both (A) and (R) are correct and (R) is the correct explanation of (A).
(4) Both (A) and (R) are correct but (R) is not the correct explanation of (A).
Answer: Option (3)
Question: 48: In one molal solution that contains 0.5 mole of a solute, there is
(1) 100 mL of solvent
(2) 1000 g of solvent
(3) 500 mL of solvent
(4) 500 g of solvent
Answer: Option (4)
Question: 49: Given below are half cell reactions:
\mathrm{MnO}_{4}^{-}+8 \mathrm{H}^{+}+5 \mathrm{e}^{-} \rightarrow \mathrm{Mn}^{2+}+4 \mathrm{H}_{2} \mathrm{O} \mathrm{E}_{\mathrm{Mn}^{2+} / \mathrm{MnO}_{4}^{-}}^{\circ}=-1.510 \mathrm{~V} \frac{1}{2} \mathrm{O}_{2}+2 \mathrm{H}^{+}+2 \mathrm{e}^{-} \rightarrow \mathrm{H}_{2} \mathrm{O} \mathrm{E}_{\mathrm{O}_{2} / \mathrm{H}_{2} \mathrm{O}}^{\circ}=+1.223 \mathrm{~V}Will the permanganate ion, \mathrm{MnO}_{4}^{-} liberate \mathrm{O}_{2} from water in the presence of an acid?
(1) Yes, because \mathrm{E}_{\text {cell }}^{\circ}=+2.733 \mathrm{~V}
(2) No, because E_{\text {cell }}^{\circ}=-2.733 \mathrm{~V}
(3) Yes, because \mathrm{E}_{\text {cell }}^{\circ}=+0.287 \mathrm{~V}
(4) No, because E_{\text {cell }}^{\circ}=-0.287 \mathrm{~V}
Answer: Option (3)
Question: 50: Identify the incorrect statement from the following.
(1) In an atom, all the five 3 d orbitals are equal in energy in free state.
(2) The shapes of d_{x y}, d_{y z} and d_{z x} orbitals are similar to each other; and d_{x^{2}-y^{2}} and d_{z^{2}} are similar to each other.
(3) All the five 5 d orbitals are different in size when compared to the respective 4 d orbitals.
(4) All the five 4 d orbitals have shapes similar to the respective 3 d orbitals.
Answer: Option (2)
Question: 51: What mass of 95 \% pure CaCO 3 will be required to neutralise 50 mL of 0.5 M HCl solution according to the following reaction?
\mathrm{CaCO}_{3(\mathrm{~s})}+2 \mathrm{HCl}_{(\mathrm{aq})} \rightarrow \mathrm{CaCl}_{2(\mathrm{aq})}+\mathrm{CO}_{2(\mathrm{~g})}+\mathrm{H}_{2} \mathrm{O}_{(\mathrm{i})}[Calculate upto second place of decimal point]
(1) 3.65 g
(2) 9.50 g
(3) 1.25 g
(4) 1.32 g
Answer: Option (4)
Question: 52: \mathrm{RMgX}+\mathrm{CO}_{2} \xrightarrow[\text { ether }]{\mathrm{dry}} \mathrm{Y} \xrightarrow{\mathrm{H}_{3} \mathrm{O}^{+}} \mathrm{RCOOH}
What is Y in the above reaction?
(1) \mathrm{RCOO}^{-} \mathrm{X}^{+}
(2) (\mathrm{RCOO})_{2} \mathrm{Mg}
(3) \mathrm{RCOO}^{-} \mathrm{Mg}^{+} \mathrm{X}
(4) \mathrm{R}_{3} \mathrm{CO}^{-} \mathrm{Mg}^{+} \mathrm{X}
Answer: Option (3)
Question: 53: Match List-I with List-II
| List-I | List-II |
|---|---|
| (a) Li | (i) absorbent for carbon dioxide |
| (b) Na | (ii) electrochemical cells |
| (c) KOH | (iii) coolant in fast breeder reactors |
| (d) Cs | (iv) photoelectric cell |
Choose the correct answer from the options given below :
(1) (a) – (i), (b) – (iii), (c) – (iv), (d) – (ii)
(2) (a) – (ii), (b) – (iii), (c) – (i), (d) – (iv)
(3) (a) – (iv), (b) – (i), (c) – (iii), (d) – (ii)
(4) (a) – (iii), (b) – (iv), (c) – (ii), (d) – (i)
Answer: Option (2)
Question: 54: Match List-I with List-II.
| List-I (Drug class) | List-II (Drug molecule) |
|---|---|
| (a) Antacids | (i) Salvarsan |
| (b) Antihistamines | (ii) Morphine |
| (c) Analgesics | (iii) Cimetidine |
| (d) Antimicrobials | (iv) Seldane |
Choose the correct answer from the options given below :
(1) (a) – (i), (b) – (iv), (c) – (ii), (d) – (iii)
(2) (a) – (iv), (b) – (iii), (c) – (i), (d) – (ii)
(3) (a) – (iii), (b) – (ii), (c) – (iv), (d) – (i)
(4) (a) – (iii), (b) – (iv), (c) – (ii), (d) – (i)
Answer: Option (4)
Question: 55: Which one is not correct mathematical equation for Dalton’s Law of partial pressure? Here p= total pressure of gaseous mixture
(1) \mathrm{p}_{\mathrm{i}}=\mathrm{X}_{\mathrm{i}} \mathrm{p}, where
\mathrm{p}_{\mathrm{i}}= partial pressure of \mathrm{i}^{\text {th }} gas
X_{i}= mole fraction of i^{\text {th }} gas in gaseous mixture where
X_{i}= mole fraction of i^{\text {th }} gas in gaseous mixture
\mathrm{p}_{i}^{\circ}= pressure of \mathrm{i}^{\text {th }} gas in pure state
where X_{i}= mole fraction of i^{\text {th }} gas in gaseous mixture
(2) \mathrm{p}_{\mathrm{i}}=\mathrm{X}_{\mathrm{i}} \mathrm{p}_{i}^{\circ},
(3) p=p_{1}+p_{2}+p_{3}
(4) \mathrm{p}=\mathrm{n}_{1} \frac{\mathrm{RT}}{\mathrm{V}}+\mathrm{n}_{2} \frac{\mathrm{RT}}{\mathrm{V}}+\mathrm{n}_{3} \frac{\mathrm{RT}}{\mathrm{V}}
Answer: Option (2)
Question: 56: Which statement regarding polymers is not correct?
(1) Thermoplastic polymers are capable of repeatedly softening and hardening on heating and cooling respectively
(2) Thermosetting polymers are reusable
(3) Elastomers have polymer chains held together by weak intermolecular forces
(4) Fibers possess high tensile strength
Answer: Option (2)
Question: 57: Given below are two statements :
Statement 1 : The boiling points of aldehydes and ketones are higher than hydrocarbons of comparable molecular masses because of weak molecular association in aldehydes and ketones due to dipole – dipole interactions.
Statement II: The boiling points of aldehydes and ketones are lower than the alcohols of similar molecular masses due to the absence of H-bonding.
In the light of the above statements, choose the most appropriate answer from the given below
(1) Statement I is correct but Statement II is incorrect
(2) Statement I is incorrect but Statement II is correct
(3) Both Statement I and Statement II are correct
(4) Both Statement I and Statement II are incorrect
Answer: Option (3)
Question: 58: The IUPAC name of an element with atomic number 119 is
(1) unununnium
(2) ununoctium
(3) ununennium
(4) unnilennium
Answer: Option (3)
Question: 59: At 298 K , the standard electrode potentials of \mathrm{Cu}^{2+} / \mathrm{Cu}, \mathrm{Zn}^{2+} / \mathrm{Zn}, \mathrm{Fe}^{2+} / \mathrm{Fe} and \mathrm{Ag}^{+} / \mathrm{Ag} are 0.34 V , -0.76 \mathrm{~V},-0.44 \mathrm{~V} and 0.80 V , respectively. On the basis of standard electrode potential, predict which of the following reaction cannot occur?
(1) \mathrm{FeSO}_{4}(\mathrm{aq})+\mathrm{Zn}(\mathrm{s}) \rightarrow \mathrm{ZnSO}_{4}(\mathrm{aq})+\mathrm{Fe}(\mathrm{s})
(2) 2 \mathrm{CuSO}_{4}(\mathrm{aq})+2 \mathrm{Ag}(\mathrm{s}) \rightarrow 2 \mathrm{Cu}(\mathrm{s})+\mathrm{Ag}_{2} \mathrm{SO}_{4}(\mathrm{aq})
(3) \mathrm{CuSO}_{4}(\mathrm{aq})+\mathrm{Zn}(\mathrm{s}) \rightarrow \mathrm{ZnSO}_{4}(\mathrm{aq})+\mathrm{Cu}(\mathrm{s})
(4) \mathrm{CuSO}_{4}(\mathrm{aq})+\mathrm{Fe}(\mathrm{s}) \rightarrow \mathrm{FeSO}_{4}(\mathrm{aq})+\mathrm{Cu}(\mathrm{s})
Answer: Option (2)
Question: 60: The Kjeldahl’s method for the estimation of nitrogen can be used to estimate the amount of nitrogen in which one of the following compounds?
Answer: Option (1)
Question: 61: The given graph is a representation of kinetics of a reaction.
The y and x axes for zero and first order reactions, respectively are
(1) zero order ( \mathrm{y}= rate and \mathrm{x}= concentration), first order ( \mathrm{y}=\mathrm{t}_{1 / 2} and \mathrm{x}= concentration)
(2) zero order ( y= rate and x= concentration), first order ( y= rate and x=t_{1 / 2} )
(3) zero order ( y= concentration and x= time), first order ( y=t_{1 / 2} and x= concentration)
(4) zero order ( y= concentration and x= time), first order ( y= rate constant and x= concentration)
Answer: Option (1)
Question: 62: Identify the incorrect statement from the following
(1) Ionisation enthalpy of alkali metals decreases from top to bottom in the group.
(2) Lithium is the strongest reducing agent among the alkali metals.
(3) Alkali metals react with water to form their hydroxides.
(4) The oxidation number of K in \mathrm{KO}_{2} is +4 .
Answer: Option (4)
Question: 63: Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):
In a particular point defect, an ionic solid is electrically neutral, even if few of its cations are missing from its unit cells.
Reason (R):
In an ionic solid, Frenkel defect arises due to dislocation of cation from its lattice site to interstitial site, maintaining overall electrical neutrality.
In the light of the above statements, choose the most appropriate answer from the options given below:
(1) (A) is correct but (R) is not correct
(2) (A) is not correct but (R) is correct
(3) Both (A) and (R) are correct and (R) is the correct explanation of (A)
(4) Both (A) and (R) are correct but (R) is not the correct explanation of (A)
Answer: Option (4)
Question: 64: The IUPAC name of the complex \left[\mathrm{Ag}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}\right]\left[\mathrm{Ag}(\mathrm{CN})_{2}\right] is:
(1) dicyanidosilver(I) diaquaargentate(I)
(2) diaquasilver(I) dicyanidoargentate(I)
(3) dicyanidosilver(II) diaquaargentate(II)
(4) diaquasilver(II) dicyanidoargentate(II)
Answer: Option (2)
Question: 65: Choose the correct statement:
(1) Diamond is \mathrm{sp}^{3} hybridised and graphite is \mathrm{sp}^{2} hybridized.
(2) Both diamond and graphite are used as dry lubricants.
(3) Diamond and graphite have two dimensional network.
(4) Diamond is covalent and graphite is ionic.
Answer: Option (1)
Question: 66: Given below are two statements
Statement I:
In the coagulation of a negative sol, the flocculating power of the three given ions is in the order
\mathrm{Al}^{3+}>\mathrm{Ba}^{2+}>\mathrm{Na}^{+}Statement II:
In the coagulation of a positive sol, the flocculating power of the three given salts is in the order
\mathrm{NaCl}>\mathrm{Na}_{2}\mathrm{SO}_{4}>\mathrm{Na}_{3}\mathrm{PO}_{4}In the light of the above statements, choose the most appropriate answer from the options given below
(1) Statement I is correct but Statement II is incorrect.
(2) Statement I is incorrect but Statement II is correct.
(3) Both Statement I and Statement II are correct.
(4) Both Statement I and Statement II are incorrect.
Answer: Option (1)
Question: 67: Given below are two statements
Statement I:
Primary aliphatic amines react with \mathrm{HNO}_{2} to give unstable diazonium salts.
Statement II:
Primary aromatic amines react with \mathrm{HNO}_{2} to form diazonium salts which are stable even above 300 K . In the light of the above statements, choose the most appropriate answer from the options given below
(1) Statement I is correct but Statement II is incorrect.
(2) Statement I is incorrect but Statement II is correct.
(3) Both Statement I and Statement II are correct.
(4) Both Statement I and Statement II are incorrect.
Answer: Option (1)
Question: 68: Gadolinium has a low value of third ionisation enthalpy because of
(1) high electronegativity
(2) high basic character
(3) small size
(4) high exchange enthalpy
Answer: Option (4)
Question: 69: Match List-I with List-II.
| List – I (Hydrides) | List – II (Nature) |
|---|---|
| (a) \mathrm{MgH}_{2} | (i) Electron precise |
| (b) \mathrm{GeH}_{4} | (ii) Electron deficient |
| (c) \mathrm{B}_{2}\mathrm{H}_{6} | (iii) Electron rich |
| (d) HF | (iv) Ionic |
Choose the correct answer from the options given below
(1) (a) – (i), (b) – (ii), (c) – (iv), (d) – (iii)
(2) (a) – (ii), (b) – (iii), (c) – (iv), (d) – (i)
(3) (a) – (iv), (b) – (i), (c) – (ii), (d) – (iii)
(4) (a) – (iii), (b) – (i), (c) – (ii), (d) – (iv)
Answer: Option (3)
Question: 70: Match List-I with List-II.
| List – I (Products formed) | List – II (Reaction of carbonyl compound with) |
|---|---|
| (a) Cyanohydrin | (i) \mathrm{NH}_{2}\mathrm{OH} |
| (b) Acetal | (ii) \mathrm{RNH}_{2} |
| (c) Schiff’s base | (iii) alcohol |
| (d) Oxime | (iv) HCN |
Choose the correct answer from the options given below
(1) (a) – (i), (b) – (iii), (c) – (ii), (d) – (iv)
(2) (a) – (iv), (b) – (iii), (c) – (ii), (d) – (i)
(3) (a) – (iii), (b) – (iv), (c) – (ii), (d) – (i)
(4) (a) – (ii), (b) – (iii), (c) – (iv), (d) – (i)
Answer: Option (2)
Question: 71: Given below are two statements
Statement I
The boiling points of the following hydrides of group 16 elements increases in the order
\mathrm{H}_{2}\mathrm{O}<\mathrm{H}_{2}\mathrm{S}<\mathrm{H}_{2}\mathrm{Se}<\mathrm{H}_{2}\mathrm{Te}Statement II
The boiling points of these hydrides increase with increase in molar mass.
In the light of the above statements, choose the most appropriate answer from the options given below :
(1) Statement I is correct but Statement II is incorrect
(2) Statement I is incorrect but Statement II is correct
(3) Both Statement I and Statement II are correct
(4) Both Statement I and Statement II are incorrect
Answer: Option (4)
Question: 72: The pH of the solution containing 50 mL each of 0.10 M sodium acetate and 0.01 M acetic acid is [Given \mathrm{pK}_{\mathrm{a}} of \mathrm{CH}_{3}\mathrm{COOH}=4.57 ]
(1) 4.57
(2) 2.57
(3) 5.57
(4) 3.57
Answer: Option (3)
Question: 73: Amongst the following which one will have maximum ‘lone pair – lone pair’ electron repulsions?
(1) \mathrm{SF}_{4}
(2) \mathrm{XeF}_{2}
(3) \mathrm{ClF}_{3}
(4) \mathrm{IF}_{5}
Answer: Option (2)
Question: 74: The incorrect statement regarding chirality is
(1) Enantiomers are superimposable mirror images on each other
(2) A racemic mixture shows zero optical rotation
(3) \mathrm{S}_{\mathrm{N}}1 reaction yields 1:1 mixture of both enantiomers
(4) The product obtained by \mathrm{S}_{\mathrm{N}}2 reaction of haloalkane having chirality at the reactive site shows inversion of configuration
Answer: Option (1)
Question: 75: Which amongst the following is incorrect statement?
(1) \mathrm{H}_{2}^{+} ion has one electron
(2) \mathrm{O}_{2}^{+} ion is diamagnetic
(3) The bond orders of \mathrm{O}_{2}^{+}, \mathrm{O}_{2}, \mathrm{O}_{2}^{-} and \mathrm{O}_{2}^{2-} are 2.5, 2, 1.5 and 1, respectively
(4) \mathrm{C}_{2} molecule has four electrons in its two degenerate \pi molecular orbitals
Answer: Option (2)
Question: 76: Which of the following sequence of reactions is suitable to synthesize chlorobenzene?
Answer: Option (3)
Question: 77: Which compound amongst the following is not an aromatic compound?
Answer: Option (2)
Question: 78: The incorrect statement regarding enzymes is
(1) Enzymes are polysaccharides.
(2) Enzymes are very specific for a particular reaction and substrate.
(3) Enzymes are biocatalysts.
(4) Like chemical catalysts enzymes reduce the activation energy of bio processes.
Answer: Option (1)
Question: 79: Which of the following \mathrm{p}-\mathrm{V} curve represents maximum work done?
Answer: Option (4)
Question: 80: Given below are two statements
Statement I:
The acidic strength of monosubstituted nitrophenol is higher than phenol because of electron withdrawing nitro group.
Statement II:
\alpha-nitrophenol, m-nitrophenol and p-nitrophenol will have same acidic strength as they have one nitro group attached to the phenolic ring.
In the light of the above statements, choose the most appropriate answer from the options given below:
(1) Statement I is correct but Statement II is incorrect.
(2) Statement I is incorrect but Statement II is correct.
(3) Both Statement I and Statement II are correct.
(4) Both Statement I and Statement II are incorrect.
Answer: Option (1)
Question: 81: Compound X on reaction with \mathrm{O}_{3} followed by \mathrm{Zn}/\mathrm{H}_{2}\mathrm{O} gives formaldehyde and 2-methyl propanal as products. The compound X is
(1) 2-Methylbut-2-ene
(2) Pent-2-ene
(3) 3-Methylbut-1-ene
(4) 2-Methylbut-1-ene
Answer: Option (3)
Question: 82: 3\mathrm{O}_{2}(\mathrm{g}) \rightleftharpoons 2\mathrm{O}_{3}(\mathrm{g})
For the above reaction at 298\,\mathrm{K}, \mathrm{K}_{\mathrm{c}} is found to be 3.0\times10^{-59}.
If the concentration of \mathrm{O}_{2} at equilibrium is 0.040\,\mathrm{M}
then concentration of \mathrm{O}_{3} in M is
(1) 2.4\times10^{31}
(2) 1.2\times10^{21}
(3) 4.38\times10^{-32}
(4) 1.9\times10^{-63}
Answer: Option (3)
Question: 83: A 10.0 L flask contains 64 g of oxygen at 27^{\circ}\mathrm{C}. (Assume \mathrm{O}_{2} gas is behaving ideally). The pressure inside the flask in bar is (Given \mathrm{R}=0.0831\,\mathrm{L}\,\mathrm{bar}\,\mathrm{K}^{-1}\,\mathrm{mol}^{-1} )
(1) 49.8
(2) 4.9
(3) 2.5
(4) 498.6
Answer: Option (2)
Question: 84: Match List-I with List-II.
| List-I (Ores) | List-II (Composition) |
|---|---|
| (a) Haematite | (i) \mathrm{Fe}_{3}\mathrm{O}_{4} |
| (b) Magnetite | (ii) \mathrm{ZnCO}_{3} |
| (c) Calamine | (iii) \mathrm{Fe}_{2}\mathrm{O}_{3} |
| (d) Kaolinite | (iv) \left[\mathrm{Al}_{2}(\mathrm{OH})_{4}\mathrm{Si}_{2}\mathrm{O}_{5}\right] |
Choose the correct answer from the options given below:
(1) (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
(2) (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
(3) (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
(4) (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
Answer: Option (4)
Question: 85: The product formed from the following reaction sequence is
Answer: Option (2)
Question: 86: The correct IUPAC name of the following compound is
(1) 1-bromo-4-methyl-5-chlorohexan-3-ol
(2) 6-bromo-4-methyl-2-chlorohexan-4-ol
(3) 1-bromo-5-chloro-4-methylhexan-3-ol
(4) 6-bromo-2-chloro-4-methythexan-4-ol
Answer: Option (3)
Question: 87: The order of energy absorbed which is responsible for the color of complexes
(A) \left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}(\mathrm{en})_{2}\right]^{2+}
(B) \left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4}(\mathrm{en})\right]^{2+} and
(C) \left[\mathrm{Ni}(\mathrm{en})_{3}\right]^{2+}
is
(1) (C) > (A) > (B)
(2) (B) > (A) > (C)
(3) (A) > (B) > (C)
(4) (C) > (B) > (A)
Answer: Option (1)
Question: 88: For a first order reaction \mathrm{A} \rightarrow Products, initial concentration of A is 0.1 M , which becomes 0.001 M after 5 minutes. Rate constant for the reaction in \min ^{-1} is
(1) 0.4606
(2) 0.2303
(3) 1.3818
(4) 0.9212
Answer: Option (4)
Question: 89: Copper crystallises in fcc unit cell with cell edge length of 3.608 \times 10^{-8} \mathrm{~cm}. The density of copper is 8.92 \mathrm{~g} \mathrm{~cm}^{-3}. Calculate the atomic mass of copper.
(1) 60 \, u
(2) 65 \, u
(3) 63.1 u
(4) 31.55 u
Answer: Option (3)
Question: 90: If radius of second Bohr orbit of the \mathrm{He}^{+} ion is 105.8 pm , what is the radius of third Bohr orbit of \mathrm{Li}^{2+} ion?
(1) 1.587 pm
(2) 158.7 \AA
(3) 158.7 pm
(4) 15.87 pm
Answer: Option (3)
Question: 91: Which one of the following statement is not true regarding gel electrophoresis technique?
(1) The presence of chromogenic substrate gives blue coloured DNA bands on the gel.
(2) Bright orange coloured bands of DNA can be observed in the gel when exposed to UV light.
(3) The process of extraction of separated DNA strands from gel is called elution.
(4) The separated DNA fragments are stained by using ethidium bromide.
Answer: Option (1)
Question: 92: Given below are two statements :
Statement I:
Mendel studied seven pairs of contrasting traits in pea plants and proposed the Laws of Inheritance.
Statement II:
Seven characters examined by Mendel in his experiment on pea plants were seed shape and colour, flower colour, pod shape and colour, flower position and stem height.
In the light of the above statements, choose the correct answer from the options given below :
(1) Statement I is correct but Statement II is incorrect
(2) Statement I is incorrect but Statement II is correct
(3) Both Statement I and Statement II are correct
(4) Both Statement I and Statement II are incorrect
Answer: Option (3)
Question: 93: Which of the following is incorrectly matched?
(1) Porphyra – Floridian Starch
(2) Volvox – Starch
(3) Ectocarpus – Fucoxanthin
(4) Ulothrix – Mannitol
Answer: Option (4)
Question: 94: XO type of sex determination can be found in :
(1) Grasshoppers
(2) Monkeys
(3) Drosophila
(4) Birds
Answer: Option (1)
Question: 95: The appearance of recombination nodules on homologous chromosomes during meiosis characterizes :
(1) Sites at which crossing over occurs
(2) Terminalization
(3) Synaptonemal complex
(4) Bivalent
Answer: Option (1)
Question: 96: Which of the following is not a method of ex situ conservation?
(1) Micropropagation
(2) Cryopreservation
(3) In vitro fertilization
(4) National Parks
Answer: Option (4)
Question: 97: Identify the incorrect statement related to Pollination :
(1) Flowers produce foul odours to attract flies and beetles to get pollinated
(2) Moths and butterflies are the most dominant pollinating agents among insects
(3) Pollination by water is quite rare in flowering plants
(4) Pollination by wind is more common amongst abiotic pollination
Answer: Option (2)
Question: 98: Given below are two statements :
Statement I:
The primary \mathrm{CO}_{2} acceptor in \mathrm{C}_{4} plants is phosphoenolpyruvate and is found in the mesophyll cells.
Statement II:
Mesophyll cells of \mathrm{C}_{4} plants lack RuBisCo enzyme.
In the light of the above statements, choose the correct answer from the options given below:
(1) Statement I is correct but Statement II is incorrect
(2) Statement I is incorrect but Statement II is correct
(3) Both Statement I and Statement II are correct
(4) Both Statement I and Statement II are incorrect
Answer: Option (3)
Question: 99: In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to :
(a) secretion of secondary metabolities and their deposition in the lumen of vessels.
(b) deposition of organic compounds like tannins and resins in the central layers of stem.
(c) deposition of suberin and aromatic substances in the outer layer of stem.
(d) deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem.
(e) presence of parenchyma cells, functionally active xylem elements and essential oils.
Choose the correct answer from the options given below:
(1) (d) and (e) Only
(2) (b) and (d) Only
(3) (a) and (b) Only
(4) (c) and (d) Only
Answer: Option (3)
Question: 100: Which one of the following produces nitrogen fixing nodules on the roots of Alnus?
(1) Rhodospirillum
(2) Beijerinckia
(3) Rhizobium
(4) Frankia
Answer: Option (4)
Question: 101: Given below are two statements:
Statement I: Decomposition is a process in which the detritus is degraded into simpler substances by microbes.
Statement II: Decomposition is faster if the detritus is rich in lignin and chitin.
In the light of the above statements, choose the correct answer from the options given below:
(1) Statement I is correct but Statement II is incorrect
(2) Statement I is incorrect but Statement II is correct
(3) Both Statement I and Statement II are correct
(4) Both Statement I and Statement II are incorrect
Answer: Option (1)
Question: 102: Habitat loss and fragmentation, over exploitation, alien species invasion and co-extinction are causes for:
(1) Biodiversity loss
(2) Natality
(3) Population explosion
(4) Competition
Answer: Option (1)
Question: 103: Hydrocolloid carrageen is obtained from:
(1) Rhodophyceae only
(2) Phaeophyceae only
(3) Chlorophyceae and Phaeophyceae
(4) Phaeophyceae and Rhodophyceae
Answer: Option (1)
Question: 104: “Girdling Experiment” was performed by Plant Physiologists to identify the plant tissue through which:
(1) for both water and food transportation
(2) osmosis is observed
(3) water is transported
(4) food is transported
Answer: Option (4)
Question: 105: The flowers are Zygomorphic in:
(a) Mustard
(b) Gulmohar
(c) Cassia
(d) Datura
(e) Chilly
Choose the correct answer from the options given below:
(1) (d), (e) Only
(2) (c), (d), (e) Only
(3) (a), (b), (c) Only
(4) (b), (c) Only
Answer: Option (4)
Question: 106: Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:
(1) Movement of protons across the membrane to the stroma
(2) Reduction of NADP to NADPH { }_{2} on the stroma side of the membrane
(3) Breakdown of proton gradient
(4) Breakdown of electron gradient
Answer: Option (4)
Question: 107: The device which can remove particulate matter present in the exhaust from a thermal power plant is :
(1) Electrostatic Precipitator
(2) Catalytic Convertor
(3) STP
(4) Incinerator
Answer: Option (1)
Question: 108: Given below are two statements: one is labelled as
Assertion (A) and the other is labelled as Reason (R).
Assertion (A) :
Polymerase chain reaction is used in DNA amplification.
Reason (R) :
The ampicillin resistant gene is used as a selectable marker to check transformation
In the light of the above statements, choose the correct answer from the options given below :
(1) (A) is correct but (R) is not correct
(2) (A) is not correct but (R) is correct
(3) Both (A) and (R) are correct and (R) is the correct explanation of (A)
(4) Both (A) and (R) are correct but (R) is not the correct explanation of (A)
Answer: Option (4)
Question: 109: Which one of the following plants does not show plasticity?
(1) Buttercup
(2) Maize
(3) Cotton
(4) Coriander
Answer: Option (2)
Question: 110: The process of translation of mRNA to proteins begins as soon as :
(1) Both the subunits join together to bind with mRNA
(2) The tRNA is activated and the larger subunit of ribosome encounters mRNA
(3) The small subunit of ribosome encounters mRNA
(4) The larger subunit of ribosome encounters mRNA
Answer: Option (3)
Question: 111: Read the following statements and choose the set of correct statements :
(a) Euchromatin is loosely packed chromatin
(b) Heterochromatin is transcriptionally active
(c) Histone octomer is wrapped by negatively charged DNA in nucleosome
(d) Histones are rich in lysine and arginine
(e) A typical nucleosome contains 400 bp of DNA helix
Choose the correct answer from the options given below :
(1) (b), (e) Only
(2) (a), (c), (e) Only
(3) (b), (d), (e) Only
(4) (a), (c), (d) Only
Answer: Option (4)
Question: 112: Read the following statements about the vascular bundles :
(a) In roots, xylem and phloem in a vascular bundle are arranged in an alternate manner along the different radii.
(b) Conjoint closed vascular bundles do not possess cambium
(c) In open vascular bundles, cambium is present in between xylem and phloem
(d) The vascular bundles of dicotyledonous stem possess endarch protoxylem
(e) In monocotyledonous root, usually there are more than six xylem bundles present
Choose the correct answer form the options given below :
(1) (a), (b), (c) and (d) Only
(2) (a), (c), (d) and (e) Only
(3) (a), (b) and (d) Only
(4) None of these
Answer: None of these
Question: 113: Exoskeleton of arthropods is composed of :
(1) Chitin
(2) Glucosamine
(3) Cutin
(4) Cellulose
Answer: Option (1)
Question: 114: What is the net gain of ATP when each molecule of glucose is converted to two molecules of pyruvic acid?
(1) Two
(2) Eight
(3) Four
(4) Six
Answer: Option (1)
Question: 115: Which of the following is not observed during apoplastic pathway ?
(1) The movement is aided by cytoplasmic streaming
(2) Apoplast is continuous and does not provide any barrier to water movement.
(3) Movement of water occurs through intercellular spaces and wall of the cells.
(4) The movement does not involve crossing of cell membrane
Answer: Option (1)
Question: 116: Which one of the following plants shows vexillary aestivation and diadelphous stamens?
(1) Allium cepa
(2) Solanum nigrum
(3) Colchicum autumnale
(4) Pisum sativum
Answer: Option (4)
Question: 117: DNA polymorphism forms the basis of
(1) Both genetic mapping and DNA finger printing
(2) Translation
(3) Genetic mapping
(4) DNA finger printing
Answer: Option (1)
Question: 118: What amount of energy is released from glucose during lactic acid fermentation?
(1) About 10 \%
(2) Less than 7 \%
(3) Approximately 15 \%
(4) More than 18 \%
Answer: Option (2)
Question: 119: Identify the correct set of statements :
(a) The leaflets are modified into pointed hard thorns in Citrus and Bougainvillea
(b) Axillary buds form slender and spirally coiled tendrils in cucumber and pumpkin
(c) Stem is flattened and fleshy in Opuntia and modified to perform the function of leaves
(d) Rhizophora shows vertically upward growing roots that help to get oxygen for respiration
(e) Subaerially growing stems in grasses and strawberry help in vegetative propagation
Choose the correct answer from the options given below :
(1) (b), (c), (d) and (e) Only
(2) (a), (b), (d) and (e) Only
(3) (b) and (c) Only
(4) (a) and (d) Only
Answer: Option (1)
Question: 120: Which one of the following statements cannot be connected to Predation?
(1) Both the interacting species are negatively impacted
(2) It is necessitated by nature of maintain the ecological balance
(3) It helps in maintaining species diversity in a community
(4) It might lead to extinction of a species
Answer: Option (1)
Question: 121: Given below are two statements :
Statement I :
Cleistogamous flowers are invariably autogamous
Statement II:
Cleistogamy is disadvantageous as there is no chance for cross pollination
In the light of the above statements, choose the correct answer from the options given below:
(1) Statement I is correct but Statement II is incorrect
(2) Statement I is incorrect but Statement II is correct
(3) Booth Statement I and Statement II are correct
(4) Both Statement I and Statement II are incorrect
Answer: Option (3)
Question: 122: Production of Cucumber has increased manifold in recent years. Application of which of the following phytohormones has resulted in this increased yield as the hormone is known to produce female flowers in the plants :
(1) Ethylene
(2) Cytokinin
(3) ABA
(4) Gibberellin
Answer: Option (1)
Question: 123: Match List -I with List – II
| List -I | List -II |
|---|---|
| (a) Manganese | (i) Activates the enzyme catalase |
| (b) Magnesium | (ii) Required for pollen germination |
| (c) Boron | (iii) Activates enzymes of respiration |
| (d) Iron | (iv) Function in splitting of water during photosynthesis |
Choose the correct answer from the options given below :
(1) (a)-(vi), (b)-(i), (c)-(ii), (d)-(iii)
(2) (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
(3) (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
(4) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
Answer: Option (4)
Question: 124: Which one of the following never occurs during mitotic cell division?
(1) Pairing of homologous chromosomes
(2) Coiling and condensation of the chromatids
(3) Spindle fibres attach to kinetochores of chromosomes
(4) Movement of centrioles towards opposite poles
Answer: Option (1)
Question: 125: The gaseous plant growth regulator is used in plants to :
(1) help overcome apical dominance
(2) kill dicotyledonous weeds in the fields
(3) speed up the malting process
(4) promote root growth and roothair formation to increase the absorption surface
Answer: Option (4)
Question: 126: Match the plant with the kind of life cycle it exhibits:
| List-I | List-II |
|---|---|
| (a) Spirogyra | (i) Dominant diploid sporophyte vascular plant, with highly reduced male or female gametophyte |
| (b) Fern | (ii) Dominant haploid free-living gametophyte |
| (c) Funaria | (iii) Dominant diploid sporophyte alternating with reduced gametophyte called prothallus |
| (d) Cycas | (iv) Dominant haploid leafy gametophyte alternating with partially dependent multicellular sporophyte |
Choose the correct answer from the options given below :
(1) (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
(2) (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
(3) (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
(4) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
Answer: Option (4)
Question: 127: Which part of the fruit, labelled in the given figure makes it a false fruit?
(1) \mathrm{C} \rightarrow Thalamus
(2) D → Seed
(3) \mathrm{A} \rightarrow Mesocarp
(4) \mathrm{B} \rightarrow Endocarp
Answer: Option (1)
Question: 128: Which one of the following will accelerate phosphorus cycle?
(1) Weathering of rocks
(2) Rain fall and storms
(3) Burning of fossil fuels
(4) Volcanic activity
Answer: Option (1)
Question: 129: Match List-I with List-II.
| List-I | List-II |
|---|---|
| (a) Metacentric chromosome | (i) Centromere situated close to the end forming one extremely short and one very long arms |
| (b) Acrocentric chromosome | (ii) Centromere at the terminal end |
| (c) Submetacentric | (iii) Centromere in the middle forming two equal arms of chromosomes |
| (d) Telocentric chromosome | (iv) Centromere slightly away from the middle forming one shorter arm and one longer arm |
Choose the correct answer from the options given below :
(1) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
(2) (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
(3) (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
(4) (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
Answer: Option (3)
Question: 130: The anatomy of springwood shown some peculiar features. Identify the correct set of statements about springwood.
(a) It is also called as the earlywood
(b) In spring season cambium produces xylem elements with narrow vessels
(c) It is lighter in colour
(d) The springwood along with autumnwood shown alternate concentric rings forming annual rings
(e) It has lower density
Choose the correct answer from the options given below :
(1) (a), (b) and (d) Only
(2) (c), (d) and (e) Only
(3) (a), (b), (d) and (e) Only
(4) (a), (c), (d) and (e) Only
Answer: Option (4)
Question: 131: Given below are two statements : one is labelled as
Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Mendel’s law of Independent assortment does not hold good for the genes that are located closely on the same chromosome.
Reason (R): Closely located genes assort independently.
In the light of the above statements, choose the correct answer from the options given below:
(1) (A) is correct but (R) is not correct
(2) (A) is not correct but (R) is correct
(3) Both (A) and (R) are correct and (R) is the correct explanation of (A)
(4) Both (A) and (R) are correct but (R) is not the correct explanation of (A)
Answer: Option (1)
Question: 132: Read the following statements on lipids and find out correct set of statements:
(a) Lecithin found in the plasma membrane is a glycolipid
(b) Saturated fatty acids possess one or more \mathrm{C}=\mathrm{C} bonds
(c) Gingely oil has lower melting point, hence remains as oil in winter
(d) Lipids are generally insoluble in water but soluble in some organic solvents
(e) When fatty acid is esterified with glycerol, monoglycerides are formed
Choose the correct answer from the option given below:
(1) (c), (d) and (e) only
(2) (a), (b) and (d) only
(3) (a), (b) and (c) only
(4) (a), (d) and (e) only
Answer: Option (1)
Question: 133: What is the role of large bundle sheath cells found around the vascular bundles in \mathrm{C}_{4} plants?
(1) To enable the plant to tolerate high temperature
(2) To protect the vascular tissue from high light intensity
(3) To provide the site for photorespiratory
(4) To increase the number of chloroplast for the operation of Calvin cycle
Answer: Option (4)
Question: 134: In the following palindromic base sequences of DNA, which one can be cut easily by particular restriction enzyme?
(1) 5’CTCAGT3′; 3’GAGTCA5′
(2) 5’GTATTC3′; 3’CATAAG5′
(3) 5’GATACT3′; 3’CTATGA5′
(4) 5’GAATTC3′; 3’CTTAAG5′
Answer: Option (4)
Question: 135: The entire fleet of buses in Delhi were converted to CNG from diesel. In reference to this, which one of the following statements is false?
(1) It is cheaper than diesel
(2) It can not be adulterated like diesel
(3) CNG burns more efficiently than diesel
(4) The same diesel enginc is used in CNG buses making the cost conversion low
Answer: Option (4)
Question: 136: Addition of more solutes in a given solution will :
(1) make its water potential zero
(2) not affect the water potential at all
(3) raise its water potential
(4) lower its water potential
Answer: Option (4)
Question: 137: Transposons can be used during which one of the following ?
(1) Autoradiography
(2) Gene sequencing
(3) Polymerase Chain Reaction
(4) Gene SilencingTransposons can be used during which one of the following ?
Answer: Option (4)
Question: 138: While explaining interspecific interaction of population, (+) sign is assigned for beneficial interaction, (-) sign is assigned for detrimental interaction and ( 0 ) for neutral interaction. Which of the following interactions can be assigned ( + ) for one specifies and ( – ) for another specifies involved in the interaction ?
(1) Commensalism
(2) Competition
(3) Predation
(4) Amensalim
Answer: Option (3)
Question: 139: If a geneticist uses the blind approach for sequencing the whole genome of an organism, followed by assignment of function to different segments, the methodology adopted by him is called as :
(1) Expressed sequence tags
(2) Bioinformatics
(3) Sequence annotation
(4) Gene mapping
Answer: Option (3)
Question: 140: Which of the following occurs due to the presence of autosome linked dominant trait ?
(1) Haemophilia
(2) Thalessemia
(3) Sickle cell anaemia
(4) Myotonic dystrophy
Answer: Option (4)
Question: 141: Natural selection where more individuals acquire specific character value other than the mean character value, leads to
(1) Disruptive change
(2) Random change
(3) Stabilising change
(4) Directional change
Answer: Option (4)
Question: 142: Given below are two statements :
Statement I : Mycoplasma can pass through less than 1 micron filter size.
Statement I : Mycoplasma are bacteria with cell wall.
In the light of the above statements, choose the most appropriate answer from the options given below
(1) Statement I is correct but Statement II is incorrect
(2) Statement I is incorrect but Statement II is correct
(3) Both Statement I and Statement II is correct
(4) Both Statement I and Statement II are incorrect
Answer: Option (1)
Question: 143: A dehydration reaction links two glucose molecules to product maltose. If the formula for glucose is \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} then what is the formula of maltose?
(1) \mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}
(2) \mathrm{C}_{12} \mathrm{H}_{24} \mathrm{O}_{11}
(3) \mathrm{C}_{12} \mathrm{H}_{20} \mathrm{O}_{10}
(4) \mathrm{C}_{12} \mathrm{H}_{24} \mathrm{O}_{12}
Answer: Option (1)
Question: 144: Which of the following statements with respect to Endoplasmic Reticulum is incorrect?
(1) In prokaryotes only RER are present
(2) SER are the sites for lipid synthesis
(3) RER has ribosomes attached to ER
(4) SER is devoid of ribosomes
Answer: Option (1)
Question: 145: Tegmina in cockroach, arises from
(1) Metathorax
(2) Prothorax and Mesothorax
(3) Prothorax
(4) Mesothorax
Answer: Option (4)
Question: 146: If the length of a DNA molecule is 1.1 metres, what will be the approximate number of base pairs?
(1) 3.3 \times 10^{6} \mathrm{bp}
(2) 6.6 \times 10^{6} \mathrm{bp}
(3) 3.3 \times 10^{9} \mathrm{bp}
(4) 6.6 \times 10^{9} \mathrm{bp}
Answer: Option (3)
Question: 147: Identify the asexual reproductive structure associated with Penicillium :
(1) Gemmules
(2) Buds
(3) Zoospores
(4) Conidia
Answer: Option (4)
Question: 148: Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : All vertebrates are chordates but all chordates are not vertebrates.
Reason (R) : Notochord is replaced by vertebral column in the adult vertebrates.
In the light of the above statements, choose the most appropriate answer from the option given below :
(1) (A) is correct but (R) is not correct
(2) (A) is not correct but (R) is correct
(3) Both (A) and (R) are correct and (R) is the correct explanation of (A)
(4) Both (A) and (R) are correct but (R) is not the correct explanation of (A)
Answer: Option (3)
Question: 149: Breeding crops with higher levels of vitamins and minerals or higher proteins and healthier fats is called :
(1) Bio-fortification
(2) Bio-accumulation
(3) Bio-magnification
(4) Bio-remediation
Answer: Option (1)
Question: 150: Under normal physiological conditions in human being every 100 ml of oxygenated blood can deliver \_\_\_\_ ml of \mathrm{O}_{2} to the tissues.
(1) 4 ml
(2) 10 ml
(3) 2 ml
(4) 5 ml
Answer: Option (4)
Question: 151: In which of the following animals, digestive tract has additional chambers like crop and gizzard?
(1) Catla, Columba, Crocodilus
(2) Pavo, Psittacula, Corvus
(3) Corvus, Columba, Chameleon
(4) Bufo, Balaenoptera, Bangarus
Answer: Option (2)
Question: 152: Which of the following functions is not performed by secretions from salivary glands?
(1) Lubrication of oral cavity
(2) Digestion of disaccharides
(3) Control bacterial population in mouth
(4) Digestion of complex carbohydrates
Answer: Option (2)
Question: 153: Nitrogenous waste is excreted in the form of pellet or paste by :
(1) Hippocampus
(2) Pavo
(3) Ornithorhynchus
(4) Salamandra
Answer: Option (2)
Question: 154: In an E. Coli strain i gene gets mutated and its product can not bind the inducer molecule. If growth medium is provided with lactose, what will be the outcome?
(1) z, y, a genes will not be translated
(2) RNA polymerase will bind the promoter region
(3) Only z gene will get transcribed
(4) z, y, a genes will be transcribed
Answer: Option (1)
Question: 155: Which of the following is present between the adjacent bones of the vertebral column?
(1) Areolar tissue
(2) Smooth muscle
(3) Intercalated discs
(4) Cartilage
Answer: Option (4)
Question: 156: Given below are two statements :
Statement I :
Fatty acids and glycerols cannot be absorbed into the blood.
{Statement II :
Specialized lymphatic capillaries called lacteals carry chylomicrons into lymphatic vessels and ultimately into the blood.
In the light of the above statements, choose the most appropriate answer from the options given below:
(1) Statement I is correct but Statement II is incorrect
(2) Statement I is incorrect but Statement II is correct
(3) Both Statement I and Statement II are correct
(4) Both Statement I and Statement II are incorrect
Answer: Option (3)
Question: 157: Select the incorrect statement with reference to mitosis:
(1) Chromosomes decondense at telophase
(2) Splitting of centromere occurs at anaphase
(3) All the chromosomes lie at the equator at metaphase
(4) Spindle fibres attach to centromere of chromosomes
Answer: Option (4)
Question: 158: Given below are two statements:
Statement I :
The release of sperms into the seminiferous tubules is called spermiation.
Statement II :
Spermiogenesis is the process of formation of sperms from spermatogonia.
In the light of the above statements, choose the most appropriate answer from the options given below:
(1) Statement I is correct but Statement II is incorrect
(2) Statement I is incorrect but Statement II is correct
(3) Both Statement I and Statement II are correct
(4) Both Statement I and Statement II are incorrect
Answer: Option (1)
Question: 159: Given below are two statements :
Statement I :
The coagulum is formed of network of threads called thrombins.
Statement II :
Spleen is the graveyard of erythrocytes.
In the light of the above statements, choose the most appropriate answer from the options given below :
(1) Statement I is correct but Statement II is incorrect
(2) Statement I is incorrect but Statement II is correct
(3) Both Statement I and Statement II are correct
(4) Both Statement I and Statement II are incorrect
Answer: Option (2)
Question: 160: Identify the microorganism which is responsible for the production of an immunosuppressive molecule cyclosporin A :
(1) Aspergillus niger
(2) Streptococcus cerevisiae
(3) Trichoderma polysporum
(4) Clostridium butylicum
Answer: Option (3)
Question: 161: Which of the following statements are true for spermatogenesis but do not hold true for Oogenesis?
(a) It results in the formation of haploid gametes
(b) Differentiation of gamete occurs after the completion of meiosis
(c) Meiosis occurs continuously in a mitotically dividing stem cell population
(d) It is controlled by the Luteinising hormone (LH) and Follicle Stimulating Hormone (FSH) secreted by the anterior pituitary
(e) It is initiated at puberty
Choose the most appropriate answer from the options given below:
(1) (b), (d) and (e) only
(2) (b), (c) and (e) only
(3) (c) and (e) only
(4) (b) and (c) only
Answer: Option (2)
Question: 162: In-situ conservation refers to:
(1) Conserve only endangered species
(2) Conserve only extinct species
(3) Protect and conserve the whole ecosystem
(4) Conserve only high-risk species
Answer: Option (3)
Question: 163: Lippe’s loop is a type of contraceptive used as:
(1) Non-Medicated IUD
(2) Copper releasing IUD
(3) Cervical barrier
(4) Vault barrier
Answer: Option (1)
Question: 164: Which of the following is a correct match for disease and its symptoms?
(1) Myasthenia gravis – Genetic disorder resulting in weakening and paralysis of skeletal muscle
(2) Muscular dystrophy – An auto immune disorder causing progressive degeneration of skeletal muscle
(3) Arthritis – Inflammed joints
(4) Tetany – High \mathrm{Ca}^{2+} level causing rapid spasms.
Answer: Option (3)
Question: 165: Which of the following is not the function of conducting part of respiratory system?
(1) Temperature of inhaled air is brought to body temperature
(2) Provides surface for diffusion of \mathrm{O}_{2} and \mathrm{CO}_{2}
(3) It clears inhaled air from foreign particles
(4) Inhaled air is humidified
Answer: Option (2)
Question: 166: Regarding Meiosis, which of the statements is incorrect?
(1) Pairing of homologous chromosomes and recombination occurs in Meiosis-I
(2) Four haploid cells are formed at the end of Meiosis-II
(3) There are two stages in Meiosis, Meiosis-I and II
(4) DNA replication occurs in S phase of Meiosis-II
Answer: Option (4)
Question: 167: Detritivores breakdown detritus into smaller particles. This process is called:
(1) Humification
(2) Decomposition
(3) Catabolism
(4) Fragmentation
Answer: Option (4)
Question: 168: Which of the following is not a connective tissue?
(1) Cartilage
(2) Neuroglia
(3) Blood
(4) Adipose tissue
Answer: Option (2)
Question: 169: In the taxonomic categories which hierarchical arrangement in ascending order is correct in case of animals?
(1) Kingdom, Order, Class, Phylum, Family, Genus, Species
(2) Kingdom, Order, Phylum, Class, Family, Genus, Species
(3) Kingdom, Phylum, Class, Order, Family, Genus, Species
(4) Kingdom, Class, Phylum, Family, Order, Genus, Species
Answer: Option (3)
Question: 170: Given Below are two statements:
Statement I:
Restriction endonucleases recognise specific sequence to cut DNA known as palindromic nucleotide sequence.
Statement II:
Restriction endonucleases cut the DNA strand a little away from the centre of the palindromic site.
In the light of the above statements, choose the most appropriate answer from the options given below:
(1) Statement I is correct but Statement II is incorrect
(2) Statement I is incorrect but Statement II is correct
(3) Both Statement I and Statement II are correct
(4) Both Statement I and Statement II are incorrect
Answer: Option (3)
Question: 171: In gene therapy of Adenosine Deaminase (ADA) deficiency, the patient requires periodic infusion of genetically engineered lymphocytes because :
(1) Lymphocyctes from patient’s blood are grown in culture, outside the body.
(2) Genetically engineered lymphocytes are not immortal cells.
(3) Retroviral vector is introduced into these lymphocytes.
(4) Gene isolated from marrow cells producing ADA is introduced into cells at embryonic stages
Answer: Option (2)
Question: 172: Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):
Osteoporosis is characterised by decreased bone mass and increased chance of fractures.
Reason (R):
Common cause of osteoporosis is increased levels of estrogen.
In the light of the above statements, choose the most appropriate answer from the options given below.
(1) (A) is correct but (R) is not correct
(2) (A) is not correct but (R) is correct
(3) Both (A) and (R) are correct and (R) is the correct explanation of (A)
(4) Both (A) and (R) are correct but (R) is not the correct explanation of (A)
Answer: Option (1)
Question: 173: At which stage of the life the oogenesis process is initiated?
(1) Birth
(2) Adult
(3) Puberty
(4) Embryonic development stage
Answer: Option (4)
Question: 174: If ‘ 8 ‘ Drosophila in a laboratory population of ‘ 80 ‘ died during a week, the death rate in the population is \_\_\_\_ individuals per Drosophila per week.
(1) 1.0
(2) zero
(3) 0.1
(4) 10
Answer: Option (3)
Question: 175: Given below are two statements:
Statement I:
Autoimmune disorder is a condition where body defense mechanism recognizes its own cells as foreign bodies.
Statement II:
Rheumatoid arthritis is a condition where body does not attack self cells.
In the light of the above statements, choose the most appropriate answer from the options given below:
(1) Statement I is correct but Statement II is incorrect
(2) Statement I is incorrect but Statement II is correct
(3) Both Statement I and Statement II are correct
(4) Both Statement I and Statement II are incorrect
Answer: Option (1)
Question: 176: The recombination frequency between the genes \mathrm{a} \& \mathrm{c} is 5 \%, \mathrm{~b} \& \mathrm{c} is 15 \%, \mathrm{~b} \& \mathrm{~d} is 9 \%, \mathrm{a} \& \mathrm{~b} is 20 \%, \mathrm{c} & d is 24 \% and a & d is 29 \%. What will be the sequence of these genes on a linear chromosome?
(1) a, b, c, d
(2) a, c, b, d
(3) a, d, b, c
(4) d, b, a, c
Answer: Option (2)
Question: 177: Match List-I with List-II
| List-I (Biological Molecules) | List-II (Biological functions) |
|---|---|
| (a) Glycogen | (i) Hormone |
| (b) Globulin | (ii) Biocatalyst |
| (c) Steroids | (iii) Antibody |
| (d) Thrombin | (iv) Storage product |
Choose the correct answer from the options given below:
(1) (a) – (ii), (b) – (iv), (c) – (iii), (d) – (i)
(2) (a) – (iv), (b) – (iii), (c) – (i), (d) – (ii)
(3) (a) – (iii), (b) – (ii), (c) – (iv), (d) – (i)
(4) (a) – (iv), (b) – (ii), (c) – (i), (d) – (iii)
Answer: Option (2)
Question: 178: Which of the following are not the effects of Parathyroid hormone?
(a) Stimulates the process of bone resorption
(b) Decreases \mathrm{Ca}^{2+} level in blood
(c) Reabsorption of \mathrm{Ca}^{2+} by renal tubules
(d) Decreases the absorption of \mathrm{Ca}^{2+} from digested food
(e) Increases metabolism of carbohydrates
Choose the most appropriate answer from the options given below:
(1) (a) and (e) only
(2) (b) and (c) only
(3) (a) and (c) only
(4) (b), (d) and (e) only
Answer: Option (4)
Question: 179: Which of the following is not a desirable feature of a cloning vector?
(1) Presence of single restriction enzyme site
(2) Presence of two or more recognition sites
(3) Presence of origin of replication
(4) Presence of a marker gene
Answer: Option (2)
Question: 180: Match List-I with List-II with respect to methods of Contraception and their respective actions.
| List-I | List-II |
|---|---|
| (a) Diaphragms | (i) Inhibit ovulation and Implantation |
| (b) Contraceptive Pills | (ii) Increase phagocytosis of sperm within Uterus |
| (c) Intra Uterine Devices | (iii) Absence of Menstrual cycle and ovulation following parturition |
| (d) Lactational Amenorrhea | (iv) They cover the cervix blocking the entry of sperms |
Choose the correct answer from the options given below:
(1) (a) – (ii), (b) – (iv), (c) – (i), (d) – (iii)
(2) (a) – (iii), (b) – (ii), (c) – (i), (d) – (iv)
(3) (a) – (iv), (b) – (i), (c) – (iii), (d) – (ii)
(4) (a) – (iv), (b) – (i), (c) – (ii), (d) – (iii)
Answer: Option (4)