# Solved papers for Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2011

### done Chhattisgarh PMT Solved Paper-2011

• question_answer1) The equation of a wave is given by $y=$A$\sin \,\omega \left( \frac{x}{v}=k \right),$where $\omega$ is angular velocity, v be linear velocity. Then dimension off c is

A) $\left[ LT \right]$

B) $\left[ T \right]$

C) $\left[ {{T}^{1}} \right]$

D) $\left[ {{T}^{2}} \right]$

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• question_answer2) The units of modulus of rigidity are

A) N-m

B) N/m

C) N-m2

D) N/m2

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• question_answer3) One car moving on a straight road covers one-third of the distance with 20 km/h and the rest with 60 km/h. The average speed is

A) 40 km/h

B) 80 km/h

C) 46 2 km/h

D) 36 km/h

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• question_answer4) The velocity at the maximum height of a projectile is half its initial velocity of projection $u$ Its range on the horizontal plane is

A) $\frac{\sqrt{3}{{u}^{2}}}{2g}$

B) $\frac{{{u}^{2}}}{3g}$

C) $\frac{3{{u}^{2}}}{2g}$

D) $\frac{3{{u}^{2}}}{g}$

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• question_answer5) Three masses${{m}_{1}},{{m}_{2}},{{m}_{3}}$ are joined from weightless string and are kept on frictionless table. They are pulled by a force ${{T}_{3}}$ of 40 N. If ${{\text{m}}_{\text{1}}}\text{=10}\,\text{kg,}$${{\text{m}}_{2}}\text{=6}\,\text{kg,}\,$${{\text{m}}_{3}}\text{=}\,\text{4}\,\text{kg,}\,$ Then, value of ${{T}_{2}}$ will be

A) 20 N

B) 40 N

C) 10N

D) 32 N

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• question_answer6) A ship of mass $3\times {{10}^{7}}kg$ initially at rest is pulled by a force of $5\times {{10}^{4}}N$ through a distance of 3 m. Assuming that the resistance due to water is negligible. The speed of the ship will be

A) 0.1 m/s

B) 1.5 m/s

C) 5 m/s

D) 60 m/s

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• question_answer7) A body of mass m moving with velocity v makes a head on collision with another body of mass 2m which is initially at rest. The loss of kinetic energy of the colliding body (mass m) is

A) $\frac{1}{2}$of its initial kinetic energy

B) $\frac{1}{9}$of its initial kinetic energy

C) $\frac{8}{9}$of its initial kinetic energy

D) $\frac{1}{4}$of its initial kinetic energy

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• question_answer8) If momentum is increased by 20%, then the kinetic energy will increase by

A) 40%

B) 44%

C) 66%

D) 50%

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• question_answer9) The moment of inertia of uniform thin rod of length L and mass M about an axis passing through a point at a distance $\frac{L}{3}$ from one of its ends and perpendicular to the rod is

A) $\frac{7M{{L}^{2}}}{48}$

B) $\frac{M{{L}^{2}}}{9}$

C) $\frac{M{{L}^{2}}}{12}$

D) $\frac{M{{L}^{2}}}{3}$

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• question_answer10) Ratio of moment of inertia of two rings is 2 : 1 and ratio of their diameters is 2 : 1. Then, the ratio of their mass will be

A) 2 : 1

B) 1 : 2

C) 1 : 4

D) 1 : 1

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• question_answer11) A solid sphere is rotating about a diameter at an angular velocity $\omega$ If it cools so that its radius reduces two$\frac{1}{n}$ of its original value, its angular velocity becomes

A) $\frac{\omega }{n}$

B) $\frac{\omega }{{{n}^{2}}}$

C) $n\omega$

D) ${{n}^{2}}\omega$

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• question_answer12) The escape velocity of an object from the earth depends upon the mass of the earth $\text{(}{{\text{M}}_{\text{e}}}\text{),}$ its mean density $\text{( }\!\!\rho\!\!\text{ ),}$ its radius $\text{(}{{\text{R}}_{e}}\text{),}$ and the gravitational constant $\text{(G),}$ Thus, the formula for escape velocity is

A) ${{v}_{es}}={{R}_{e}}\sqrt{\frac{8\pi }{3}\text{G }\!\!\rho\!\!\text{ }}$

B) ${{v}_{es}}=M\sqrt{\frac{8\pi }{3}\text{G}{{\text{R}}_{e}}}$

C) ${{v}_{es}}=\sqrt{2GM{{R}_{e}}}$

D) ${{v}_{es}}=\sqrt{\frac{2GM}{R_{e}^{2}}}$

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• question_answer13) Orbital velocity of an artificial satellite does not depend upon

A) mass of the earth

B) mass of the satellite

C) radius of the earth

D) acceleration due to gravity

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• question_answer14) The cyclotron frequency of an electron gyrating in a magnetic field of 1 T is approximately

A) 28MHz

B) 280MHz

C) 2.8 GHz

D) 28 GHz

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• question_answer15) When the potential energy of a particle executing SHM is one-fourth of its maximum value during the oscillation, the displacement of the particle from the equilibrium position in terms of its amplitude a is

A) $\frac{a}{4}$

B) $\frac{a}{3}$

C) $\frac{a}{2}$

D) $\frac{2a}{3}$

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• question_answer16) For a particle-executing SHM. Which of the following statements is not correct?

A) The total energy of the particle always remains the same

B) The restoring force is always directed towards a fixed point

C) The restoring force is maximum at the extreme positions

D) The acceleration of the particle is maximum in the equilibrium position

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• question_answer17) Period of oscillation of mass attached to a spring and performing SHM is T. The spring is now cut into four equal pieces and the same mass attached to one piece. Now, the period of its simple harmonic oscillations is

A) $2T$

B) $\frac{T}{4}$

C) $\frac{T}{2}$

D) $T$

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• question_answer18) Two wires made of same material having lengths $L$and $2L$ and radii $r$ and $2r$ respectively are clamped rigidly at their one end and are stretched by applying forces equal to F and 2F respectively. If extension in length of first wire is I, the extension in second wire is

A) $l$

B) $2l$

C) $\frac{1}{2}l$

D) $4l$

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• question_answer19) A metal bar of length L and area of cross-section A is clamped between two rigid supports. Its Young's modulus for the material of the rod is Y and coefficient of linear expansion is a. If the temperature of the rod is increased by $\Delta t{}^\circ C$ the force exerted by the rod on the supports is

A) $YAL\Delta t$

B) $YA\alpha \Delta t$

C) $\frac{YA\alpha \Delta t}{A}$

D) $Y\alpha A\Delta t$

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• question_answer20) The temperature of the hydrogen at which the average rms speed of its molecules is equal to that of oxygen molecules at a temperature of $31{}^\circ C$ is

A) $-216{}^\circ C$

B) $-235{}^\circ C$

C) $-254{}^\circ C$

D) $-264{}^\circ C$

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• question_answer21) At $27{}^\circ C$, the average kinetic energy of gas is $6.25\times {{10}^{-21}}J$ At $227{}^\circ C$ its average kinetic energy will be

A) $52.2\times {{10}^{-21}}\text{J}$

B) $5.22\times {{10}^{-21}}\text{J}$

C) $10.42\times {{10}^{-21}}\text{J}$

D) $11.35\times {{10}^{-21}}\text{J}$

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• question_answer22) . An ideal gas is expanded adiabatically at an initial temperature of 300 K. So, that its volume is doubled. The final temperature of the hydrogen gas is$\text{( }\!\!\gamma\!\!\text{ }\,\text{=1}\text{.40)}$

A) 227.36 K

B) 500.30 K

C) 454.76 K

D) $-47{}^\circ C$

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• question_answer23) For a diatomic gas, change in internal energy for unit change in temperature at constant pressure and constant volume is ${{U}_{1}}$ and ${{U}_{2}}$ respectively. ${{U}_{1}}:{{U}_{2}}$ is

A) 5 : 3

B) 3 : 5

C) 1:1

D) 7 : 5

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• question_answer24) Figure shows three pV diagrams. In which case work done is minimum?

A) $\text{I}$

B) $\text{II}$

C) $\text{III}$

D) Cannot say

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• question_answer25) Maximum wavelength of emitted radiation is $4\mu m$ at 2000 K. Then, maximum wavelength at 2400 K is

A) $3.33\mu m$

B) $0.66\mu m$

C) $1\mu m$

D) $1m$

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• question_answer26) A solid cube and a solid sphere have equal surface areas. Both are at the same temperature of $120{}^\circ C$. Then

A) both of them will cool down at the same rate

B) the cube will cool down faster than the sphere

C) the sphere will cool down faster than the cube

D) whichever of the two is heavier will cool down faster

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• question_answer27) The time period of rotation of the sun is 25 days and its radius $7\times {{10}^{8}}m.$ The Doppler shift for the light of wavelength $6000\,\overset{\text{o}}{\mathop{\text{A}}}\,$ emitted from the surface of the sun will be

A) $0.04\,\overset{\text{o}}{\mathop{\text{A}}}\,$

B) $0.40\,\overset{\text{o}}{\mathop{\text{A}}}\,$

C) $4.00\,\overset{\text{o}}{\mathop{\text{A}}}\,$

D) $40.0\,\overset{\text{o}}{\mathop{\text{A}}}\,$

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• question_answer28) A transverse wave is described by the equation $y=a\,\sin \,2\pi \left( nt-\frac{x}{\lambda } \right)$The maximum particle velocity will be equal to four times the wave velocity, if

A) $\lambda =\frac{\pi a}{4}$

B) $\lambda =\frac{\pi a}{2}$

C) $\lambda =\pi a$

D) $\lambda =2\pi a$

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• question_answer29) In Young's double slit experiment, when wavelength used is $6000\,\overset{\text{o}}{\mathop{\text{A}}}\,$ and the screen is 40 cm from the slits, the fringes are 0.012 cm apart. What is the distance between the slits?

A) 0.024cm

B) 2.4cm

C) 0.24cm

D) 0.2cm

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• question_answer30) Two coherent sources must have the same

A) amplitude

B) phase difference

C) frequency

D) Both [b] and [c]

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• question_answer31) On a glass plate a light wave is incident at an angle of $60{}^\circ C$. If the reflected and the refracted waves are mutually perpendicular, the refractive index of material is

A) $\frac{\sqrt{3}}{2}$

B) $\sqrt{3}$

C) $\frac{3}{2}$

D) $\frac{1}{\sqrt{3}}$

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• question_answer32) An object placed 10 cm in front of lens has an image 20 cm behind the lens. What is the power of the lens (in diopter)?

A) 1.5 D

B) 3.0 D

C) -15 D

D) +15D

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• question_answer33) A ray passes through a prism of angle $60{}^\circ C$ in minimum deviation position and suffers a deviation of $30{}^\circ$. What is the angle of incidence on the prism?

A) $30{}^\circ$

B) $45{}^\circ$

C) $60{}^\circ$

D) $90{}^\circ$

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• question_answer34) A total charge +Q is located at the centre of a cubical box. The total flux going out through one wall of the box is

A) $Q/{{\varepsilon }_{0}}$

B) $Q/3{{\varepsilon }_{0}}$

C) $Q/4{{\varepsilon }_{0}}$

D) $Q/6{{\varepsilon }_{0}}$

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• question_answer35) The capacitance of an air capacitor is $15\mu F$ and the separation between the parallel plates is 6 mm. A copper plate of 3 mm thickness is introduced symmetrically between the plates. The capacitance now becomes

A) $5\text{ }\mu F$

B) $7.5\text{ }\mu F$

C) $22.5\mu F$

D) $30\text{ }\mu F$

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• question_answer36) Kirchhoffs law regarding the algebraic sum of currents at any junction in a circuit is based on the law of conservation of

A) charge

B) energy

C) momentum

D) mass

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• question_answer37) The material of wire of potentiometer is made of

A) copper

B) steel

C) manganin

D) aluminium

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• question_answer38) A current of 1.6 A is flowing through a copper voltameter. The number of $C{{u}^{2+}}ions$ deposited per minute on the cathode is (Given, $e=1.6\times {{10}^{-19}}C$)

A) $3.0\times {{10}^{20}}$

B) $1.5\times {{10}^{20}}$

C) $1.6\times {{10}^{19}}$

D) $3.2\times {{10}^{19}}$

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• question_answer39) For electroplating of a spoon it is kept in voltameter at

A) place of anode

B) place of cathode

C) between anode and cathode

D) at anyplace in electrolyte solution

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• question_answer40) Field inside a solenoid is

A) directly proportional to its length

B) directly proportional to the current

C) inversely proportional to total number of turns

D) inversely proportional to current

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• question_answer41) Two parallel wires carrying currents in the same direction attract each other because of

A) potential difference between them

B) mutual inductance between them

C) electric force between them

D) magnetic force between them

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• question_answer42) Two lines of force due to a bar magnet

A) intersect at the neutral point

B) intersect near the poles of the magnet

C) intersect on the equatorial axis of the magnet

D) do not intersect at all

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• question_answer43) A transformer is an appliance for converting

A) high current at low voltage to small current at high voltage

B) large current at low voltage to high current at high voltage

C) small current at high voltage to small current at low voltage

D) large current at high voltage to small current at low voltage

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• question_answer44) The power factor of a good choke coil is

A) nearly zero

B) exactly zero

C) nearly one

D) exactly one

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• question_answer45) Penetrating power of X-rays depends on

A) current flowing in the filament

B) applied potential difference

C) nature of the target

D) All of the above

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• question_answer46) A proton moving with velocity v is acted upon by electric field E and magnetic field B. The proton will move undetected, if

A) E is perpendicular to B

B) E is parallel to v and perpendicular to B

C) E, B and v are mutually perpendicular and $v=\frac{E}{B}$

D) E and B both are parallel to v

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• question_answer47) In terms of Rydberg's constant R, the wave number of the first Balmer line is

A) $R$

B) $\frac{3R}{4}$

C) $\frac{5R}{36}$

D) $\frac{8R}{9}$

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• question_answer48) Ratio of the wavelength of first line Lyman series and first line of Balmer series is

A) 1:3

B) 27 : 5

C) 5 : 27

D) 4:9

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• question_answer49) The mass number of an atomic nucleus

A) is always greater than the atomic number

B) is always less than the atomic number

C) is always equal to the atomic number

D) can be sometimes equal to and sometimes greater than the atomic number

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• question_answer50) The rate of disintegration of fixed quantity of a radioactive element can be increased by

A) increasing temperature

B) increasing the pressure

C) chemical reaction

D) it is not possible

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• question_answer51) When chlorine reacts with dil. $NaOH$under cold conditions, the oxidation state of chlorine changes from zero to

A) $-1$ and $+5$

B) $+1$ and $+4$

C) $+5$ and $+3$

D) $-1$ and $+1$

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• question_answer52) The catalyst used in the manufacture of ammonia is

A) ${{V}_{2}}{{O}_{5}}$

B) $Pt$

C) $Fe$

D) $Ni{{(CO)}_{4}}$

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• question_answer53) The unit is of the rate of a second order reaction is

A) $tim{{e}^{-1}}$

B) $mol\text{ }{{L}^{-1}}\text{ }tim{{e}^{-1}}$

C) $L\text{ }mo{{l}^{-1}}\text{ }tim{{e}^{-1}}$

D) ${{L}^{2}}\text{ }mo{{l}^{-2}}\text{ }tim{{e}^{-1}}$

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• question_answer54) Maximum lowering of vapour pressure is observed in the case of

A) $0.1\text{ }M\text{ }glucose$

B) $0.1\text{ }M\text{ }BaC{{l}_{2}}$

C) $0.1\text{ }M\text{ }MgS{{O}_{4}}$

D) $0.1\text{ }NaCl$

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• question_answer55) A solution containing 4g of polyvinyl chloride polymer in 1 L of dioxane was found to have an osmotic pressure of $4.1\times {{10}^{-4}}$ atm at${{27}^{o}}C$ The approximate molecular weight of the polymer is

A) $1500$

B) $10000$

C) $2.4\times {{10}^{5}}$

D) $2\times {{10}^{12}}$

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• question_answer56) The molarity of pure water is

A) $100$

B) $50$

C) $18$

D) $55.55$

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• question_answer57) The scientist who proposed the atomic model based on the quantization of energy for the first time is

A) Max Planck

B) Niels Bohr

C) de-Broglie

D) Heisenberg

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• question_answer58) Dichloroacetic acid is a stronger acid than acetic acid. This is due to the occurrence of

A) mesomeric effect

B) hyper conjugation

C) inductive effect

D) steric effect

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• question_answer59) Which of the following species does not exert a resonance effect?

A) ${{C}_{6}}{{H}_{5}}N{{H}_{2}}$

B) ${{C}_{6}}{{H}_{5}}\overset{+}{\mathop{N}}\,{{H}_{2}}$

C) ${{C}_{6}}{{H}_{5}}OH$

D) ${{C}_{6}}{{H}_{5}}Cl$

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• question_answer60) Which one of the following monoenes does not exhibit geometric isomerism?

A) ${{C}_{4}}{{H}_{8}}$

B) ${{C}_{3}}{{H}_{6}}$

C) ${{C}_{5}}{{H}_{10}}$

D) ${{C}_{8}}{{H}_{16}}$

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• question_answer61) Which of the following diacid readily gives anhydride on heating?

A) Fumaric

B) Maleic acid

C) Malic acid

D) Terephthalic acid

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• question_answer62) Decomposition of benzene diazonium chloride by using $C{{u}_{2}}C{{l}_{2}}/HCl$to form chlorobenzene is

A) Raschig's reaction

B) Sandmeyer's reaction

C) Kolbe's reaction

D) Cannizzaro's reaction

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• question_answer63) The latent heat of fusion of ice at ${{0}^{o}}C$is $80~\,cal/g$. Entropy change $(\Delta S)$accompanying the melting of $1\text{ }g$of ice at ${{0}^{o}}C$would be (units: $cal/g/K$)

A) $273$

B) $8.0$

C) $0.0$

D) $0.293$

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• question_answer64) Which one of the following is a non-polar molecule?

A) $CC{{l}_{4}}$

B) $CHC{{l}_{3}}$

C) $C{{H}_{2}}C{{l}_{2}}$

D) $C{{H}_{3}}Cl$

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• question_answer65) The stoichiometry of the following reaction is ${{K}_{2}}{{S}_{2}}{{O}_{8}}(aq)+2KI(aq)\to$$2{{K}_{2}}S{{O}_{4}}(aq)+{{I}_{2}}(aq)$

A) $2:2$

B) $1:1$

C) $1:2$

D) $2:1$

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• question_answer66) The volume-temperature graphs of a given mass of an ideal gas at constant pressures are shown below. What is the correct order of pressures?

A) ${{P}_{1}}>{{P}_{3}}>{{P}_{2}}$

B) ${{P}_{1}}>{{P}_{2}}>{{P}_{3}}$

C) ${{P}_{2}}>{{P}_{3}}>{{P}_{1}}$

D) ${{P}_{2}}>{{P}_{1}}>{{P}_{3}}$

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• question_answer67) 1-butyne on hydration gives

A) butan-1, 2-diol

B) butan-1-ol

C) butan-2-ol

D) butan-2-one

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• question_answer68) Conversion of chlorobenzene to phenol involves

A) electrophilic substitution

B) nucleophilic substitution

C) free radical substitution

D) electrophilic addition

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• question_answer69) An alkyl halide reacts with alcoholic ammonia in a sealed tube, the product formed will be

A) a primary amine

B) a secondary amine

C) a tertiary amine

D) a mixture of all the three

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• question_answer70) Which one of the following is the set of correct quantum numbers of an electron in 3d-orbital?

A) $n=3,l=0,m=0,\,s=-1/2$

B) $n=2,l=3,m=0,\,s=+1/2$

C) $n=3,l=1,m=0,\,s=-1/2$

D) $n=3,l=2,m=1,\,s=+1/2$

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• question_answer71) The number of beta particles emitted in the radioactive decay series from $^{238}{{U}_{92}}$ to $^{206}{{U}_{82}}$ is

A) $10$

B) $8$

C) 6

D) $2$

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• question_answer72) What happens to the yield on application of high pressure in the Haber's synthesis of ammonia?

A) Increases

B) Decreases

C) Unaffected

D) Reaction stops

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• question_answer73) Hydroxyl ion concentration of ${{10}^{-2}}\text{ }M$$HCl$ is

A) $1\times {{10}^{1}}\text{ }mol\text{ }d{{m}^{-3}}$

B) $1\times {{10}^{-12}}\text{ }mol\text{ }d{{m}^{-3}}$

C) $1\times {{10}^{-1}}\text{ }mol\text{ }d{{m}^{-3}}$

D) $1\times {{10}^{-14}}\text{ }mol\text{ }d{{m}^{-3}}$

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• question_answer74) In the ionic equation;$BiO_{3}^{-}+6{{H}^{+}}+x{{e}^{-}}\xrightarrow{{}}B{{i}^{3+}}+3{{H}_{2}}O,$ the values of x is

A) $6$

B) $2$

C) $4$

D) $3$

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• question_answer75) Which of the following metal oxides is most basic?

A) $ZnO$

B) $A{{l}_{2}}{{O}_{3}}$

C) $A{{s}_{2}}{{O}_{3}}$

D) ${{K}_{2}}O$

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• question_answer76) The number of unpaired electrons in the square planar ${{[Pt{{(CN)}_{4}}]}^{2-}}$ ion is

A) $2$

B) $1$

C) $0$

D) $3$

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• question_answer77) In case of condensation of polymers

A) high molecular weight polymers are formed all at once

B) lower molecular weight polymers are formed all at once

C) molecular weight of polymer rises throughout the reaction

D) have no specific relation to their molecular weight

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• question_answer78) The $\alpha$-amino acid which does not give purple colour in the ninhydrin test is

A) proline

B) glycine

C) lysine

D) aspartic acid

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• question_answer79) Amylopectin is the polymer of

A) $\beta -D-glucose$

B) $\alpha -D-glucose$

C) $\beta -D-fructose$

D) $\alpha -D-fructose$

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• question_answer80) Which of the products is formed when acetone is reacted with barium hydroxide solution?

A) $C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-C{{H}_{2}}-\underset{OH}{\mathop{\underset{|}{\mathop{\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-C{{H}_{3}}$

B) $C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C}}\,}}\,H-\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,H-C{{H}_{3}}$

C) $C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,H-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C}}\,}}\,H-C{{H}_{3}}$

D) $C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{\overset{OH}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{\overset{OH}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-C{{H}_{3}}$

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• question_answer81) In metal carbonyl (organometallic) complexes, the $M-C$bond is

A) ionic

B) covalent with ionic character

C) covalent

D) coordinate covalent

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• question_answer82) In the brown ring test, the brown colour of the ring is due to

A) ferrous nitrate

B) ferric nitrate

C) a mixture of $NO$and $N{{O}_{2}}$

D) nitrosoferrous$-I$ sulphate

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• question_answer83) If one mole of ammonia and one mole of hydrogen chloride are mixed in a closed container to form ammonium chloride gas, then

A) $\Delta H>\Delta U$

B) $\Delta H=\Delta U$

C) $\Delta H<\Delta U$

D) there is no relationship

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• question_answer84) The volume of 10 N and 4 N $HCl$required to make $1\text{ }L$of $7\text{ }N$$HCl$ are

A) $0.50\text{ }L$of $10\text{ }N\text{ }HCl$ and $0.50\text{ }L$of $4\text{ }N\text{ }HCl$

B) $0.60\text{ }L$of $10\text{ }N$$HCl$ and $0.40\text{ }L$of $4\text{ }N\text{ }HCl$

C) $0.80\text{ }L$$10\text{ }N$ $HCl$of and $0.20\text{ }L$of $4\text{ }N\text{ }HCl$

D) $0.75\text{ }L$of $10\text{ }N$ $HCl$ and $0.25\text{ }L$of $4\text{ }N\text{ }HCl$

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• question_answer85) If to a solution of acetic acid, sodium acetate is added, then

A) $[{{H}^{+}}]$ increases

B) $[C{{H}_{3}}CO{{O}^{-}}]$in decreases

C) Ionisation of $C{{H}_{3}}COOH$is suppressed

D) Ionisation constant of $C{{H}_{3}}COOH$ decreases

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• question_answer86) Which of the following is not correct?

A) Nuclei of atoms participate in nuclear reactions

B) $_{20}C{{a}^{40}}$and $_{18}A{{r}^{40}}$ are isotones

C) 1 amu of mass defect is approximately equal to $931.5\text{ }MeV$

D) Uranium $({{U}^{238}})$ series is known as $(4n+2)$ series

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• question_answer87) The order of electron affinity of halogens is

A) $F>Cl>Br>I$

B) $Cl>F>Br>I$

C) $Cl>F>I>Br$

D) $Br>Cl>F>I$

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• question_answer88) The metallurgical process in which a metal is obtained in a fused state is called

A) smelting

B) roasting

C) calcination

D) froth floatation

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• question_answer89) Identify the reaction that does not take place in a blast furnace.

A) $CaC{{O}_{3}}\xrightarrow{{}}CaO+C{{O}_{2}}$

B) $CaO+Si{{O}_{2}}\xrightarrow{{}}CaSi{{O}_{3}}$

C) $2F{{e}_{2}}{{O}_{3}}+3C\xrightarrow{{}}4Fe+3C{{O}_{2}}$

D) $C{{O}_{2}}+C\xrightarrow{{}}2CO$

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• question_answer90) The product formed when hydroxylamine condenses with a carbonyl compound is called

A) hydrazide

B) oxime

C) hydrazine

D) hydrazine

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• question_answer91) $C{{H}_{3}}C{{H}_{2}}OH\xrightarrow[step\,I]{C{{l}_{2}}}C{{H}_{3}}CHO\xrightarrow[step\,II]{3C{{l}_{2}}}C{{l}_{3}}CCHO$ In above reactions, the role of $C{{l}_{2}}$in step I and step II respectively is

A) oxidation, chlorination

B) reduction, chlorination

C) oxidation, addition

D) reduction, substitution

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• question_answer92) During a redox titration involving a solution containing $F{{e}^{2+}}$ ions against $MnO_{4}^{-}$ in the presence of excess of ${{H}^{+}}$ ions, the number of electrons that gets transferred is

A) $6$

B) $5$

C) $4$

D) $2$

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• question_answer93) The number of unidentate ligands in the complex ion is called

A) oxidation number

B) primary valency

C) coordination number

D) RAN

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• question_answer94) An element with atomic number 21 is a

A) halogen

B) representative element

C) transition element

D) alkali metal

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• question_answer95) $2S{{O}_{2}}(g)+{{O}_{2}}(g)$ is an example for

A) neutralisation reaction

B) homogeneous catalysis

C) heterogeneous catalysis

D) irreversible reaction

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• question_answer96) The relationship between Gibb's free energy change $(\Delta G)$ and emf (E) of a reversible electrochemical cell is given by

A) $\Delta G=nFE$

B) $\Delta G=nF/E$

C) $\Delta G=-nFE$

D) $\Delta G=E/nF$

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• question_answer97) Normal aluminium electrode coupled with normal hydrogen electrode gives an emf of $1.66\text{ }V,$ so the standard potential of $Al$ is

A) $-1.66V$

B) $+1.66V$

C) $-0.83\text{ }V$

D) $+0.83\text{ }V$

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• question_answer98) Which one of the following chlorohydrocarbons readily undergoes solvolysis?

A) $C{{H}_{2}}=CHCl$

B)

C)

D)

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• question_answer99) Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone?

A) $C{{H}_{3}}Cl$

B) $~C{{H}_{3}}COOH$

C) $C{{H}_{3}}CHO$

D) $C{{H}_{3}}COCl$

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• question_answer100) Hydrolysis of $NC{{l}_{3}}$gives $N{{H}_{3}}$and X. Which of the following is X?

A) $HCl{{O}_{4}}$

B) $HCl{{O}_{3}}$

C) $HOCl$

D) $HCl{{O}_{2}}$

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• question_answer101) Which of the following is a spedes?

A) Dipnoi

B) Mammaha

C) Canis familiaris

D) Carnivora

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• question_answer102) Locomotion does not occur in

A) Amoeba

B) Pheretima

C) Leucosolenia

D) Maggot of Musca

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• question_answer103) On how many criteria living organisms have been classified into five kingdoms?

A) Two

B) Four

C) Five

D) Three

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• question_answer104) Which of the following have more characters in common?

A) Order

B) Family

C) Class

D) Phylum

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• question_answer105) The endoskeleton in the head of cockroach is known as

A) notum

B) pleura

C) apodeme

D) tentorium

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• question_answer106) Which of the following eats its prey?

A) Leech

B) Starfish

C) Sepia

D) Both [b] and [c]

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• question_answer107) Presence of claspers is an important character in

A) Sphyma

B) Echeneis

C) Hippocampus

D) Exocoetus

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• question_answer108) The mammals evolved from the reptile in the

A) Cretaceous

B) Triassic

C) Devonian

D) Carboniferous

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• question_answer109) Palaeolithic age relates to

A) subman

B) modem man

C) backward man

D) prehistoric man

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• question_answer110) For natural selection, the important factor is

A) disuse

B) variation

C) catastrophic

D) special creation

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• question_answer111) Schwann cells are present on which part of a neuron?

A) Axon

B) Soma/body

C) Dendrites

D) Axon hillock

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• question_answer112) A dental disease characterized by mottling of teeth is due to presence of a certain chemical element in drinking water. Which is that element?

A) Boron

B) Chlorine

C) Fluorine

D) Mercury

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• question_answer113) After the expiration of a normal tidal volume, a -person breathes in as much as air possible. The volume of air inspired is the

A) vital capacity

B) in spiratory capacity

C) in spiratory reserve volume

D) functional residual capacity

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• question_answer114) Blood of which vessel in mammals carries least percentage of urea?

A) Renal vein

B) Dorsal aorta

C) Renal artery

D) Posterior vena cava

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• question_answer115) One of the following is not found in mammalian urine.

A) water

B) sucrose

C) ammonium salt

D) sodium chloride

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• question_answer116) Bone dissolving cells are

A) osteoplasts

B) osteoclasts

C) chondroclasts

D) chondroblasts

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• question_answer117) Which one is odd?

A) Ligament

B) Pronator

C) Adductor

D) Supinator

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• question_answer118) Orchidectomy is the removal of

A) testes

B) spleen

C) ovaries

D) liver

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• question_answer119) Acrosome of sperm is formed from

A) nucleus of spermatid

B) centrosome of spermatid

C) Golgi complex

D) mitochondria of spermatid

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• question_answer120) Atretic follicles are found in the

A) liver

B) ovary

C) testis

D) thymus

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• question_answer121) If cells destined to form endoderm in a gastrula are removed, the new individual will be devoid of

A) heart

B) brain

C) kidney

D) visceral organs

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• question_answer122) Which of these promotes growth?

A) Pineal gland

B) Anterior pituitary

C) Adrenal gland

D) Posterior pituitary

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• question_answer123) Which one is the real product of honey bee?

A) Pollen

B) Honey

C) Propolis

D) Beeswax

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• question_answer124) Which one is not transmitted by houseflies?

A) Cholera

B) Typhoid

C) Dysentery

D) Yellow fever

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• question_answer125) The drug 'belladonna' is obtained from

A) Atropa

B) Capsicum

C) Solanum

D) Rauwolffia

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• question_answer126) Sporeine was first developed by

A) USA

B) Italy

C) Germany

D) France

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• question_answer127) The ovum of human female has auto somes

A) 22 pairs

B) 21 pairs

C) 23 pairs

D) 44 pairs

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• question_answer128) The central dogma is not applicable in the case of

A) retroviruses

B) all prokaryotes

C) transcription

D) reverse transcription

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• question_answer129) Antiserum is a serum containing

A) antigens

B) leucocytes

C) antibodies

D) None of these

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• question_answer130) Chromosomal imbalance is most frequent during which of the following stages of human development?

A) Foetal

B) Embryonic

C) Adult

D) Childhood

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• question_answer131) Genes not located within the nucleus are almost always found in

A) cytosol

B) ribosome

C) cytoskeleton

D) cell membrane

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• question_answer132) A promoter site on DNA

A) transcribes represser

B) regulates termination

C) initiates transcription

D) code for RNA polymerase

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• question_answer133) The chromosome cannot be stained with

A) eosin

B) feulgen stain

C) haematoxylin

D) acetocarmine

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• question_answer134) Synthesized vaccines are also called

A) first generation vaccines

B) second and third generation vaccines

C) monoclonal vaccines

D) None of the above

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• question_answer135) PCR technique is applied for

A) DNA amplification

B) DNA synthesis

C) reverse transcription

D) gene cloning

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• question_answer136) Fusion of lymphocytes with myeloma in hybridoma technology is a classical example of

A) somatic hybridization

B) normal hybridization

C) micro propagation

D) cryopreservation

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• question_answer137) Allergic reactions develop in response to

A) hirudin

B) serotonin

C) heparin

D) histamine

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• question_answer138) Natural silk contains

A) nitrogen

B) potassium

C) magnesium

D) phosphorus

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• question_answer139) Earthworms are not found in

A) mor humus

B) mull humus

C) loams

D) clay

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• question_answer140) The usual shape of growth curve is

A) linear

B) zig-zag

C) sigmoid

D) bell-shaped

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• question_answer141) The bones of old person become brittle due to accumulation of

A) sodium

B) calcium

C) phosphorus

D) magnesium

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• question_answer142) Which can be regenerated in mammals?

A) Liver

B) Arms

C) Teeth

D) Eye

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• question_answer143) In embryo, cleavage brings about

A) increased size

B) increased DNA content

C) change in shape and size

D) increased mass of protoplasm

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• question_answer144) Placental barriers are maximum in

A) cat

B) pig

C) rat

D) man

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• question_answer145) A freshly laid unfertilized egg of hen contains

A) 100 cells

B) 1 cell

C) 109 cells

D) about a million cells

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• question_answer146) Structure of which remain unchanged during metamorphosis in frog's tadpole?

A) Lungs

B) Brain

C) Heart

D) Intestine

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• question_answer147) The presence of RBCs in urine is known as

A) uraemia

B) haematuria

C) alkaptonuria

D) poly cythaemia

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• question_answer148) Which of these genes are mutated frequently in cancer?

A) Oncogenes

B) Tumour suppressor genes

C) Mutator genes

D) All of the above

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• question_answer149) Demography involves

A) changes in population size

B) composition of population

C) distribution of population

D) All of the above

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• question_answer150) Birth rate is the simplest indicator of

A) mortality

B) narality

C) fertility

D) growth

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• question_answer151) Pyrenoids are centre of

A) fat storage

B) starch storage

C) protein formation

D) enzyme formation

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• question_answer152) A component not associated with Golgi bodies is

A) cisternae

B) zone of exclusion

C) acid phosphatase

D) protein glycosylation

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• question_answer153) Which is more important for photosynthesis?

A) Chloroplast

B) Chlorophyll

C) Plastid

D) Radiant energy

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• question_answer154) A plant is kept in dark for few days. The cells of leaves in this plant will show

A) amyloplast

B) chromoplast

C) anthocyanin

D) etioplast

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• question_answer155) In plant cell wall

A) secondary wall is always present

B) may be absent

C) there cannot be intercellular spaces

D) bear pores through which cytoplasm can pass

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• question_answer156) When a plant cell is placed in pure water, it will

A) become rigid

B) smell

C) become flaccid

D) no change

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• question_answer157) How many times does the cytokinesis occur during entire process of meiosis

A) 1

B) 3

C) 2

D) 4

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• question_answer158) Germ cells in gonads are produced by

A) only mitosis

B) only meiosis

C) maturation without cell division

D) Both [a] and [b]

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• question_answer159) Where does meiosis occur in blue green algae/bacteria?

A) Zygote

B) Zygospore

C) Akinete

D) None of these

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• question_answer160) In Pinus, number of chromosomes in its leaf cells is 24. What will be the number of chromosome in its endosperm?

A) 24

B) 36

C) 12

D) 6

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• question_answer161) Imbibition is always accompanied by swelling or increase in the volume of the imbibant. However, the increase in the volume of the imbibant is

A) more than die volume of water imbibed

B) some as the volume of the water imbibed

C) less than the volume of the water imbibed

D) it depends upon the type of imbibant

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• question_answer162) With the increase in temperature, the process of imbibitions

A) decreases

B) increases

C) remain the same

D) no effect

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• question_answer163) Which of the following has higher water potential?

A) 1 M salt solution

B) 1 M sugar solution

C) Distilled water

D) 1 M sugar solution with 2-3 bars pressure applied to it

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• question_answer164) Cell A has${{\text{ }\!\!\Psi\!\!\text{ }}_{\text{W}}}\text{-3}$ bars and cell B has${{\text{ }\!\!\Psi\!\!\text{ }}_{\text{W}}}\text{-8}$ bars. The movement of water will be from

A) cell A to cell B

B) cell B to cell A

C) data insufficient

D) water cannot move in negative value of${{\text{ }\!\!\Psi\!\!\text{ }}_{\text{W}}}$

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• question_answer165) The term apoplast signifies

A) cell wall, intercellular space and water-filled channels

B) protoplasts interconnected by plasmodesmata

C) cell wall, cytoplasm and central vacuole

D) None of the above

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• question_answer166) Which factor is most important in regularity transpiration?

A) Temperature

B) Humidity

C) Light

D) Wind

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• question_answer167) If concentration of $C{{O}_{3}}$ in atmosphere is increased, the stomata are closed in

A) dark

B) light

C) Both [a] and [b]

D) None of the above

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• question_answer168) Tea yellow is a disease of tea plants produced due to the deficiency of

A) phosphorus

B) sulphur

C) potassium

D) nitrogen

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• question_answer169) White-bud condition in maize is produced due to the deficiency of

A) iron

B) molybdenum

C) zinc

D) boron

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• question_answer170) Root of which plant contains a red pigment that has affinity for oxygen?

A) Carrot

B) Soybean

C) Mustard

D) Radish

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• question_answer171) Who proved that oxygen evolved in photosynthesis comes from water?

A) Mayer

B) Calvin

C) Ruben

D) Hill

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• question_answer172) If an angiosperm is kept at compensation point

A) it will die after sometime

B) its growth will be normal

C) its growth will be faster

D) its growth will stop but it will not die

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• question_answer173) Crassulacean acid metabolism operates in

A) succulents

B) non-succulents

C) mesophytes

D) hydrophytes

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• question_answer174) When a tall plant with rounded seeds (TTRR) is crossed with a dwarf plant with wrinkled seeds (ttrr), the ${{F}_{1}}$ generation consists of tall plants with rounded seeds? How many types of gametes an ${{F}_{1}}$plant would produce.

A) One

B) Three

C) Four

D) Eight

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• question_answer175) The Nobel Prize for the discovery of TCA cycle and ATP biosynthesis was awarded to

A) Hans Krebs

B) Lipman

C) Krebs and Lipman jointly

D) Vishniae and Ochoa

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• question_answer176) The process of deriving glucose from fats and proteins is called

A) glycogenolysis

B) gluconeogenesis

C) glycogenesis

D) glycolysis

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• question_answer177) One turn of Krebs' cycle for the oxidation of 1 mole of sucrose produce. How many ATP molecules.

A) 12

B) 24

C) 22

D) 11

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• question_answer178) Respiratory substrate fielding maximum number of ATP molecules is

A) ketogenic amino acid

B) glucose

C) amylase

D) glycogen

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• question_answer179) Fermentation is

A) anaerobic respiration

B) aerobic respiration

C) incomplete oxidation of carbohydrates

D) anaerobic complete oxidation of carbohydrates

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• question_answer180) Cyanide resistant respiration is found in

A) plants

B) bacteria

C) viruses

D) animals

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• question_answer181) Which of the following chemical is used in Ganong's respire meter to determine RQ?

A) 10%KOH

B) 10%NaOH

C) 1% $N{{H}_{4}}OH$

D) 1% $Ca{{(OH)}_{2}}$

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• question_answer182) Two seeds are germinated, A in light and B in dark. Which grows taller in initial stage?

A) A > B

B) B > A

C) A = B

D) No growth in either case

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• question_answer183) Excess amount of $C{{O}_{2}}$

A) retards growth

B) accelerates growth

C) affects growth shortly

D) does not effect growth

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• question_answer184) Legume seeds exhibit dormancy due to

A) undeveloped embryo

B) absence of cytokinins

C) hard seed coat

D) absence of $G{{A}_{3}}$

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• question_answer185) Morphogenesis is controlled by an interaction between

A) auxins and gibberellins

B) auxins and cytokinins

C) gibberellins and cytokinins

D) None of the above

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• question_answer186) Rhizophore of Selaginella is

A) root

B) stem

C) leaf

D) organ sui generis

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• question_answer187) Endosperm in gymnosperms is

A) haploid

B) triploid

C) diploid

D) tetraploid

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• question_answer188) Coralloid roots in Cycas have a symbiotic blue green alga that forms an algal zone in such roots. This alga is

A) Aulosira

B) Anabaena

C) Oscillatoria

D) Chlorella

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• question_answer189) If Gnetum is not in flowering it may be mistaken for a

A) tree fern

B) monocot plant

C) dicot plant

D) None of these

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• question_answer190) A plant which is first terrestrial and then? becomes epiphyte (space parasite)

A) Vanda

B) Cuscuta

C) Rafflesia

D) Santalum

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• question_answer191) Endogenous and exogenous spores both can be traced in

A) Mucor

B) Agaricus

C) Pemcillium

D) Rhizopus

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• question_answer192) Yeast is a good source of

A) protein

B) riboflavin (vitamin$-{{B}_{2}}$)

C) sugar

D) ascorbic acid (vitamin-C)

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• question_answer193) Witches broom of legume is caused by

A) virus

B) bacteria

C) fungus

D) mycoplasma

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• question_answer194) In angiosperm, the archegonium is replaced by

A) egg cell

B) female gametophyte

C) pollars and egg apparatus

D) synergids

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• question_answer195) Which of the following statements is correct?

A) Producers produce energy

B) Consumers consume energy

C) Decomposers decompose energy

D) Producers transform energy

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• question_answer196) Browning of cauliflower is a

A) fungal disease

B) bacterial disease

C) physiological disease

D) viral disease

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• question_answer197) Best biofertilizer for paddy fields is

A) Rhizobium

B) Azolla

C) Anthoceros

D) Bacillus polymyxa

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• question_answer198) First man made cereal is

A) Secale cereale

B) Triticale

C) Triticum aestivum

D) maximum dwarf, high yield wheat

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• question_answer199) In which of the following fruits, the edible part is aril?

A) Apple

B) Pomegranate

C) Orange

D) Litchi

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• question_answer200) Breeding of crops with high levels of minerals, vitamins and proteins is called

A) somatic hybridization

B) bio fortification

C) bio magnifications

D) micro propagation

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