Solved papers for CET Karnataka Medical CET - Karnataka Medical Solved Paper-2009

done CET - Karnataka Medical Solved Paper-2009

  • question_answer1) --In ruby laser, the stimulated emission is due to transition from

    A) metastable state to any lower state

    B) any higher state to lower state

    C) metastable state to ground state

    D) any higher state to ground state

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  • question_answer2) A direct current I flows along the length of an infinitely long straight thin walled pipe, then the magnetic field is

    A) uniform throughout the pipe but not zero

    B) zero only along the axis of the pipe

    C) zero at any point inside the pipe

    D) maximum at the centre and minimum at the edge

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  • question_answer3) A convex lens made of glass has focal length 0.15 m in air. If the refractive index of glass is \[\frac{3}{2}\] and that of water is \[\frac{4}{3}\], the focal length of lens when immersed in water is

    A) 0.45 m

    B) 0.15 m

    C) 0.30 m

    D) 0.6 m

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  • question_answer4) Two sources are said to be coherent if they produce waves

    A) having a constant phase difference

    B) of equal wavelength

    C) of equal speed

    D) having same shape of wave front

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  • question_answer5) Three resistors 1\[\Omega \], 2\[\Omega \] and 3\[\Omega \] are connected to form a triangle. Across 3\[\Omega \] resistor a 3 V battery is connected. The current through 3\[\Omega \] resistor is

    A) 0.75 A

    B) 1 A

    C) 2 A

    D) 1.5 A

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  • question_answer6) In a common emitter amplifier the input signal is applied across

    A) anywhere

    B) emitter-collector

    C) collector-base

    D) base-emitter

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  • question_answer7) In a radioactive disintegration, the ratio of initial number of atoms to the number of atoms present at an instant of time equal to its mean life is

    A) \[\frac{1}{{{e}^{2}}}\]

    B) \[\frac{1}{e}\]

    C) e

    D) \[{{e}^{2}}\]

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  • question_answer8) A ray of light is incident on a surface of glass slab at an angle\[45{}^\circ \]. If the lateral shift produced per unit thickness is \[\frac{1}{\sqrt{3}}\]m, the angle of refraction produced is

    A) \[{{\tan }^{-1}}\left( \frac{\sqrt{3}}{2} \right)\]

    B) \[{{\tan }^{-1}}\left( 1-\sqrt{\frac{2}{3}} \right)\]

    C) \[si{{n}^{-1}}\left( 1-\sqrt{\frac{2}{3}} \right)\]

    D) \[ta{{n}^{-1}}\left( \sqrt{\frac{2}{\sqrt{3}-1}} \right)\]

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  • question_answer9) Ferromagnetic materials used in a transformer must have

    A) low permeability and high hysterisis loss

    B) high permeability and low hysterisis loss

    C) high permeability and high hysterisis loss

    D) low permeability and low hysterisis loss

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  • question_answer10) According to Newtons corpuscular theory, the speed of light is

    A) same in all the media

    B) lesser in rarer medium

    C) lesser in denser medium

    D) independent of the medium

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  • question_answer11) For the constructive interference the path difference between the two interfering waves must be equal to

    A) \[\left( 2n+1 \right)\lambda \]

    B) \[2n\pi \]

    C) \[n\lambda \]

    D) \[\left( 2n+1 \right)\frac{\lambda }{2}\]

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  • question_answer12) The accurate measurement of emf can be obtained using

    A) multimeter

    B) voltmeter

    C) voltameter

    D) potentiometer

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  • question_answer13) The kinetic energy of an electron gets tripled, then the de-Broglie wavelength associated with it changes by a factor

    A) \[\frac{1}{3}\]

    B) \[\sqrt{3}\]

    C) \[\frac{1}{\sqrt{3}}\]

    D) 3

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  • question_answer14) Which of the following is not a thermodynamic coordinate?

    A) Gas constant (R)

    B) Pressure (p)

    C) Volume (V)

    D) Temperature (T)

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  • question_answer15) Two solid pieces, one of steel and the other of aluminium when immersed completely in water have equal weights. When the solid pieces are weighed in air

    A) the weight of aluminium is half the weight of steel

    B) steel piece will weigh more

    C) they have the same weight

    D) aluminium piece will weigh more

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  • question_answer16) The amount of energy released when one microgram of matter is annihilated is

    A) \[25kWh~\]

    B) \[9\times {{10}^{10}}kWh\]

    C) \[3\times {{10}^{10}}kWh~~~~\]

    D) \[0.5\times {{10}^{5}}kWh\]

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  • question_answer17) The number of significant figures in the numbers \[4.8000\times {{10}^{4}}\] and\[48000.50\]are respectively

    A) 5 and 6

    B) 5 and 7

    C) 2 and 7

    D) 2 and 6

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  • question_answer18) \[\beta \]-decay means emission of electron from

    A) innermost electron orbit

    B) a stable nucleus

    C) outermost electron orbit

    D) radioactive nucleus

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  • question_answer19) An electric heater rated 220 V and 550 W is connected to AC mains. The current drawn by it is

    A) 0.8 A

    B) 2.5 A

    C) 0.4 A

    D) 1.25 A

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  • question_answer20) A body of mass m moving along a straight line covers half the distance with a speed of 2 ms-1. The remaining half of the distance is covered in two equal time intervals with a speed of 3 ms-1 and 5 ms-1 respectively. The average speed of the particle for the entire journey is

    A) \[\frac{3}{8}m{{s}^{-1}}\]

    B) \[\frac{8}{3}m{{s}^{-1}}\]

    C) \[\frac{4}{3}m{{s}^{-1}}\]

    D) \[\frac{16}{3}m{{s}^{-1}}\]

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  • question_answer21) The moment of inertia of a circular ring of radius r and mass M about diameter is

    A) \[\frac{2}{5}M{{r}^{2}}\]

    B) \[\frac{M{{r}^{2}}}{4}\]

    C) \[\frac{M{{r}^{2}}}{2}\]

    D) \[\frac{M{{r}^{2}}}{12}\]

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  • question_answer22) A body of mass 0.05 kg is observed to fall with an acceleration of\[9.5\text{ }m{{s}^{-2}}\]. The opposing force of air on the body is \[\left( g=9.8\text{ }m{{s}^{-2}} \right)\]

    A) 0.015 N

    B) 0.15 N

    C) 0.030 N

    D) zero

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  • question_answer23) The colloidal solution in which both the dispersed phase and dispersion medium are liquids are called

    A) emulsions

    B) gels

    C) foams

    D) liquid crystals

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  • question_answer24) In fog, photographs of the objects taken with infrared radiations are more clear than those obtained during visible light because

    A) I - R radiation has lesser wavelength than visible radiation

    B) scattering of I - R light is more than visible light

    C) the intensity of I - R light from the object is less

    D) scattering of J - R light is less than visible light

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  • question_answer25) Three concurrent co-planar forces 1 N, 2 N and 3 N acting along different directions on a body

    A) can keep the body in equilibrium if 2 N and 3 N act at right angle

    B) can keep the body in equilibrium if 1 N and 2 N act at right angle

    C) cannot keep the body in equilibrium

    D) can keep the body in equilibrium in 1 N and 3 N act at an acute angle

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  • question_answer26) Sound waves transfer

    A) only energy not momentum

    B) energy

    C) momentum

    D) Both [a] and [b]

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  • question_answer27) Two rectangular blocks A and B of masses 2 kg and 3 kg respectively are connected by a spring of spring constant 10.8 Nm-1 and are placed on a frictionless horizontal surface. The block A was given an initial velocity of 0.15 ms-1 in the direction shown in the figure. The maximum compression of the spring during the motion is

    A) 0.01 m

    B) 0.02 m

    C) 0.05 m

    D) 0.03 m

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  • question_answer28) G P Thomson experimentally confirmed the existence of matter waves by the phenomena

    A) diffraction

    B) refraction

    C) polarisation

    D) scattering

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  • question_answer29) The resistance of a wire at 300 K is found to be 0.3 Sl. If the temperature coefficient of resistance of wire is\[1.5\times {{10}^{-3}}{{K}^{-1}}\], the temperature at which the resistance becomes 0.6\[\Omega \] is

    A) 720 K

    B) 345 K

    C) 993 K

    D) 690 K

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  • question_answer30) The work done by a force acting on a body is as shown in the graph. The total work done in covering an initial distance of 20 m is

    A) 225 J

    B) 200 J

    C) 400 J

    D) 175 J

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  • question_answer31) Two luminous point sources separated by a certain distance are at 10 km from an observer. If the aperture of his eye is \[2.5\times {{10}^{-3}}\]m and the wavelength of light used is 500 nm, the distance of separation between the point sources just seen to be resolved is

    A) 12.2 m

    B) 24.2 m

    C) 2.44 m

    D) 1.22 m

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  • question_answer32) A door 1.6 m wide requires a force of 1 N to be applied at the free end to open or close it. The force that is required at a point 0.4 m distance from the hinges for opening or closing the door is

    A) 1.2 N

    B) 3.6 N

    C) 2.4 N

    D) 4 N

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  • question_answer33) \[0.1{{m}^{3}}\] of water at \[80{}^\circ C\]is mixed with \[0.3\text{ }{{m}^{3}}\] of water at\[60{}^\circ C\]. The final temperature of the mixture is

    A) \[65{}^\circ C\]

    B) \[70{}^\circ C\]

    C) \[60{}^\circ C\]

    D) \[75{}^\circ C\]

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  • question_answer34) The spectral series of the hydrogen atom that lies in the visible region of the electromagnetic spectrum

    A) Paschen

    B) Balmer

    C) Lyman

    D) Brackett

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  • question_answer35) A graph of pressure versus volume for an ideal gas for different processes is as shown. In the graph curve OC represents

    A) isochoric process

    B) isothermal process

    C) isobaric process

    D) adiabatic process

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  • question_answer36) Which of the following statement does not hold good for thermal radiation?

    A) The wavelength changes when it travels from one medium to another

    B) The frequency changes when it travels from one medium to another

    C) The speed changes when it travels from one medium to another

    D) They travel in straight line in a given medium

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  • question_answer37) A planet revolves around the sun in an elliptical orbit. The linear speed of the planet will be maximum at

    A) D

    B) B

    C) A

    D) C

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  • question_answer38) Horizontal tube of non-uniform cross-section has radii of 0.1 m and 0.05 m respectively at M and N. For a streamline flow of liquid the rate of liquid flow is

    A) changing continuously with time

    B) greater at M-than at N

    C) greater at N than at M

    D) same at M and N

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  • question_answer39) A resistor and a capacitor are connected in series with an AC source. If the potential drop across the capacitor is 5 V and that across resistor is 12 V, then applied voltage is

    A) 13 V

    B) 17 V

    C) 5 V

    D) 12 V

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  • question_answer40) The amount of heat energy radiated by a metal at temperature T is E. When the temperature is increased to 3T, energy radiated is

    A) 81 E

    B) 9 E

    C) 3 E

    D) 27 E

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  • question_answer41) The angle of minimum deviation for an incident light ray on an equilateral prism is equal to its refracting angle. The refractive index of its material is

    A) \[\frac{1}{\sqrt{2}}\]

    B) \[\sqrt{3}\]

    C) \[\frac{\sqrt{3}}{2}\]

    D) \[\frac{3}{2}\]

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  • question_answer42) In the following combinations of logic gates, the outputs of A, B and C are respectively

    [A]
    [B]
    [C]

    A) 0, 1, 1

    B) 0, 1, 0

    C) 1, 1, 0

    D) 1, 0, 1

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  • question_answer43) A stationary point source of sound emits sound uniformly in all directions in a non-absorbing medium. Two points P and Q are at a distance of 4 m and 9 m respectively from the source. The ratio of amplitudes of the waves at P and Q is

    A) \[\frac{3}{2}\]

    B) \[\frac{4}{9}\]

    C) \[\frac{2}{3}\]

    D) \[\frac{9}{4}\]

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  • question_answer44) A galvanometer of resistance 240\[\Omega \] allows only 4% of the main current after connecting a shunt resistance. The value of the shunt resistance is

    A) 10\[\Omega \]

    B) 20\[\Omega \]

    C) 8\[\Omega \]

    D) 5\[\Omega \]

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  • question_answer45) The phenomena in which proton flips is

    A) nuclear magnetic resonance

    B) lasers

    C) radioactivity

    D) nuclear fusion

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  • question_answer46) \[y=3\sin \pi \left( \frac{t}{2}-\frac{x}{4} \right)\]represents an equation of a progressive wave, where t is in second and \[x\] is in metre. The distance travelled by the wave in 5 s is

    A) 8 m

    B) 10 m

    C) 5 m

    D) 32 m

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  • question_answer47) According to the quark model, it is possible to build all the hadrons using

    A) 2 quarks and 3 antiquarks

    B) 3 quarks and 2 antiquarks

    C) 3 quarks and 3 antiquarks

    D) 2 quarks and 2 antiquarks

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  • question_answer48) An \[\alpha \]-particle of mass 6.4 x 10-27 kg and charge 3.2 x 10-19 C is situated in a uniform electric field of 1.6 x 105 Vm-1. The velocity of the particle at the end of 2 x 10-2 m path when it starts from rest is

    A) \[2\sqrt{3}\times {{10}^{5}}m{{s}^{-1}}\]

    B) \[8\times {{10}^{5}}m{{s}^{-1}}\]

    C) \[16\times {{10}^{5}}m{{s}^{-1}}\]

    D) \[4\sqrt{2}\times {{10}^{5}}m{{s}^{-1}}\]

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  • question_answer49) A cylindrical tube open at both the ends has a fundamental frequency of 390 Hz in air. If \[\frac{1}{4}\]th of the tube is immersed vertically in water the fundamental frequency of air column is

    A) 260 Hz

    B) 130 Hz

    C) 390 Hz

    D) 520 Hz

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  • question_answer50) The surface temperature of the stars is determined using

    A) Plancks law

    B) Wiens displacement law

    C) Rayleigh-Jeans law

    D) Kirchhoffs law

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  • question_answer51) The charge deposited on\[\text{4 }\!\!\mu\!\!\text{ F}\]capacitor in the circuit is

    A) \[6\times {{10}^{-6}}C\]

    B) \[12\times {{10}^{-6}}C\]

    C) \[24\times {{10}^{-6}}C\]

    D) \[36\times {{10}^{-6}}C\]

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  • question_answer52) A parallel beam of light is incident on a converging lens parallel to its principal axis. As one moves away from the lens on the other side of the principal axis, the intensity of light

    A) first decreases and then increases

    B) continuously increases

    C) continuously decreases

    D) first increases and then decreases

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  • question_answer53) Continuous emission spectrum is produced by

    A) incandescent electric lamp

    B) mercury vapour lamp

    C) sodium vapour lamp

    D) polyatomic substances

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  • question_answer54) A coil of n number of turns is wound tightly in the form of a spiral with inner and outer radii a and b respectively. When a current of strength \[I\]is passed through the coil, the magnetic field at its centre is

    A) \[\frac{{{\mu }_{0}}nI}{\left( b-a \right)}{{\log }_{e}}\frac{a}{b}\]

    B) \[\frac{{{\mu }_{0}}nI}{2\left( b-a \right)}\]

    C) \[\frac{2{{\mu }_{0}}nI}{b}\]

    D) \[\frac{{{\mu }_{0}}nI}{2\left( b-a \right)}{{\log }_{e}}\frac{b}{a}\]

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  • question_answer55) A ray of light is incident on a plane mirror at an angle of\[60{}^\circ \]. The angle of deviation produced by the mirror is

    A) \[120{}^\circ ~\]

    B) \[30{}^\circ \]

    C) \[60{}^\circ ~\]

    D) \[90{}^\circ \]

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  • question_answer56) The electric potential at any point x, y, z in metres is given by\[V=\text{ }3{{x}^{2}}\]. The electric field at a point (2, 0, 1) is

    A) \[12\text{ }V{{m}^{-1}}\]

    B) \[-6\text{ }V{{m}^{-1}}\]

    C) \[6V{{m}^{-1}}\]

    D) \[-12V{{m}^{-1}}\]

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  • question_answer57) Youngs double slit experiment gives interference fringes of width 0.3 mm. A thin glass plate made of material of refractive index 1.5 is kept in the path of light from one of the slits, then the fringe width becomes

    A) zero

    B) 0.3 mm

    C) 0.45 mm

    D) 0.15 mm

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  • question_answer58) Near a circular loop of conducting wire as shown in the figure an electron moves along a straight line. The direction of the induced current if any in the loop is

    A) variable

    B) clockwise

    C) anticlockwise

    D) zero

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  • question_answer59) Hydrogen atom from excited state comes to the ground stage by emitting a photon of wavelength\[\lambda \]. If R is the Rydberg constant, the principal quantum number n of the excited state is

    A) \[\sqrt{\frac{\lambda R}{\lambda R-1}}\]

    B) \[\sqrt{\frac{\lambda }{\lambda R-1}}\]

    C) \[\sqrt{\frac{\lambda {{R}^{2}}}{\lambda R-1}}\]

    D) \[\sqrt{\frac{\lambda R}{\lambda -1}}\]

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  • question_answer60) The magnetic dipole moment of a current loop is independent of

    A) magnetic field in which it is lying

    B) number of turns

    C) area of the loop

    D) current in the loop

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  • question_answer61) The correct statement with regard to \[H_{2}^{+}\] and \[H_{2}^{-}\]is

    A) both \[H_{2}^{+}\] and \[H_{2}^{-}\] are equally stable

    B) Both \[H_{2}^{+}\] and \[H_{2}^{-}\] do not exist

    C) \[H_{2}^{-}\] is more stable than \[H_{2}^{+}\]

    D) \[H_{2}^{+}\] is more stable than \[H_{2}^{-}\]

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  • question_answer62) Arrange the following in the increasing order of their bond order \[{{O}_{2}},O_{2}^{+},O_{2}^{-}\]and \[O_{2}^{2-}\]

    A) \[O_{2}^{2-},O_{2}^{-},{{O}_{2}},O_{2}^{+}\]

    B) \[O_{2}^{2-},O_{2}^{-},O_{2}^{+},{{O}_{2}}\]

    C) \[O_{2}^{+},{{O}_{2}},O_{2}^{-},O_{2}^{2-}\]

    D) \[{{O}_{2}},O_{2}^{+},O_{2}^{-},O_{2}^{2-}\]

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  • question_answer63) 2 g of a radioactive sample having half-life of 15 days was synthesised on 1st Jan 2009. The amount of the sample left behind on 1st March, 2009 (including both the days) is

    A) \[0g\]

    B) \[0.125g\]

    C) \[1g\]

    D) \[0.5g\]

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  • question_answer64) For a chemical reaction \[A\to B\], the rate of the reaction is\[2\times {{10}^{-3}}\text{ }mol\text{ }d{{m}^{-3}}\text{ }{{s}^{-1}}\], when the initial concentration is \[0.05\text{ }mol\text{ }d{{m}^{-3}}\]. The rate of the same reaction is \[1.6\times {{10}^{-2}}\text{ }mol\text{ }d{{m}^{-3}}\text{ }{{s}^{-1}}\] when the initial concentration is \[0.1\text{ }mol\text{ }d{{m}^{-3}}\]. The order of the reaction is

    A) \[2\]

    B) \[0\]

    C) \[3\]

    D) \[1\]

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  • question_answer65) For the decomposition of a compound AB at 600 K, the following data were obtained

    \[[AB]\,mol\,\,d{{m}^{-3}}\] Rate of decomposition of AB in \[mol\,d{{m}^{-3}}\,{{s}^{-1}}\]
    \[0.20\] \[2.75\times {{10}^{-8}}\]
    \[0.40\] \[11.0\times {{10}^{-8}}\]
    \[0.60\] \[24.75\times {{10}^{-8}}\]
    The order for the decomposition of AB is

    A) \[1.5\]

    B) \[0\]

    C) \[1\]

    D) \[2\]

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  • question_answer66) The rate equation for a reaction \[A\to B\] is \[r=k{{[A]}^{0}}\] If the initial concentration of the reactant is a\[mol\text{ }d{{m}^{-3}}\], the half-life period of the reaction is

    A) \[\frac{a}{2k}\]

    B) \[\frac{k}{a}\]

    C) \[\frac{a}{k}\]

    D) \[\frac{2a}{k}\]

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  • question_answer67) \[30cc\] of \[\frac{M}{3}HCl,\]\[20cc\]of \[\frac{M}{2}HN{{O}_{3}}\] and \[40cc\] of \[\frac{M}{4}NaOH\] solutions are mixed and the volume was made up to\[1\text{ }d{{m}^{3}}\]. The pH of the resulting solution is

    A) \[8\]

    B) \[2\]

    C) \[1\]

    D) \[3\]

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  • question_answer68) An aqueous solution containing \[6.5g\]of \[NaCl\] of 90% purity was subjected to electrolysis. After the complete electrolysis, the solution was evaporated to get solid \[NaOH\]. The volume of 1 M acetic acid required to neutralise \[NaOH\] obtained above is

    A) \[1000c{{m}^{3}}\]

    B) \[2000c{{m}^{3}}\]

    C) \[100c{{m}^{3~}}\]

    D) \[200c{{m}^{3}}\]

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  • question_answer69) The standard electrode potential for the half-cell reactions are \[Z{{n}^{2+}}+2{{e}^{-}}\xrightarrow{{}}Zn;{{E}^{o}}=-0.76V\] \[F{{e}^{2+}}+2{{e}^{-}}\xrightarrow{{}}Fe;{{E}^{o}}=-0.44V\] The emf of the cell reaction, \[F{{e}^{2+}}+Zn\xrightarrow{{}}Z{{n}^{2+}}+Fe\] is

    A) \[-0.32V\]

    B) \[-1.20V\]

    C) \[+1.20V\]

    D) \[+0.32V\]

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  • question_answer70) \[{{10}^{-6}}M\text{ }NaOH\]is diluted 100 times. The pH of the diluted base is

    A) Between 7 and 8

    B) Between 5 and 6

    C) Between 6 and 7

    D) Between 10 and 11

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  • question_answer71) In the electrolysis of acidulated water, it is desired to obtain \[1.12cc\]of hydrogen per second under STP condition. The current to be passed is

    A) \[1.93A\]

    B) \[9.65A\]

    C) \[19.3A\]

    D) \[0.965A\]

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  • question_answer72) The one which decreases with dilution is

    A) Molar conductance

    B) Conductance

    C) Specific conductance

    D) Equivalent conductance

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  • question_answer73) Vapour pressure of pure A is 70 mm of \[Hg\] at \[{{25}^{o}}C\]. It forms an ideal solution with B in which mole fraction of A is \[0.8\]. If the vapour pressure of the solution is \[84mm\]of \[Hg\] at \[{{25}^{o}}C\], the vapour pressure of pure B at \[{{25}^{o}}C\] is

    A) \[28mm\]

    B) \[56mm\]

    C) \[70mm\]

    D) \[140mm\]

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  • question_answer74) A 6% solution of urea is isotonic with

    A) 1 M solution of glucose

    B) 0.05 M solution of glucose

    C) 6% solution of glucose

    D) 25% solution of glucose

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  • question_answer75) In countries nearer to polar region, the roads are sprinkled with \[CaC{{l}_{2}}\]. This is

    A) To minimise the wear and tear of the roads

    B) To minimise the snow fall

    C) To minimise pollution

    D) To minimise the accumulation of dust on the road

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  • question_answer76) For the reaction \[{{H}_{2}}O(l){{H}_{2}}O(g)\]at \[373K\]and 1 atm pressure

    A) \[\Delta H=0\]

    B) \[\Delta E=0\]

    C) \[\Delta H=T\Delta S\]

    D) \[\Delta H=\Delta E\]

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  • question_answer77) A compound of A and B crystallises in a cubic lattice in which A atoms occupy the lattice points at the corners of the cube. The B atoms occupy the centre of each face of the cube. The probable empirical formula of the compound is

    A) \[A{{B}_{2}}\]

    B) \[{{A}_{3}}B\]

    C) \[AB\]

    D) \[A{{B}_{3}}\]

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  • question_answer78) In electrophilic aromatic substitution reaction, the nitro group is meta directing because it

    A) Decreases electron density at ortho and para positions

    B) Decreases electron density at meta position

    C) Increases electron density at meta position

    D) Increases electron density at ortho and para positions

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  • question_answer79) \[C{{H}_{3}}COOH\xrightarrow{LiAl{{H}_{4}}}X\xrightarrow[{{300}^{o}}C]{Cu}Y\xrightarrow[NaOH]{Diltue}Z\] In the above reaction Z is

    A) butanol

    B) aldol

    C) ketol

    D) acetal

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  • question_answer80) The best method for the conversion of an alcohol into an alkyi chloride is by treating the alcohol with

    A) \[PC{{l}_{3}}\]

    B) \[PC{{l}_{5}}\]

    C) \[SoC{{l}_{2}}\] in presence of pyridine

    D) dry \[HCl\] in the presence of anhydrous \[ZnC{{l}_{2}}\]

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  • question_answer81) The electrophile involved in the sulphonation of benzene is

    A) \[SO_{3}^{+}\]

    B) \[SO_{3}^{2-}\]

    C) \[H_{3}^{+}O\]

    D) \[S{{O}_{3}}\]

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  • question_answer82) The carbon-carbon bond length in benzene is

    A) In between \[{{C}_{2}}{{H}_{6}}\] and \[{{C}_{2}}{{H}_{4}}\]

    B) Same as in \[{{C}_{2}}{{H}_{4}}\]

    C) In between C^H^ and \[{{C}_{2}}{{H}_{4}}\]

    D) In between \[{{C}_{2}}{{H}_{4}}\] and C

    View Answer play_arrow
  • question_answer83) The compound which is not formed during the dry distillation of a mixture of calcium formate and calcium acetate is

    A) Methanal

    B) Propanal

    C) Propanone

    D) Ethanal

    View Answer play_arrow
  • question_answer84) An organic compound X is oxidised by using Acidified \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]The product obtained reacts with phenyl hydrazine but does not answer silver mirror test. The possible structure of X is

    A) \[C{{H}_{3}}C{{H}_{2}}OH\]

    B) \[C{{H}_{3}}-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-C{{H}_{3}}\]

    C) \[{{(C{{H}_{3}})}_{2}}CHOH\]

    D) \[C{{H}_{3}}CHO\]

    View Answer play_arrow
  • question_answer85) The reaction involved in the oil of winter green test is salicylic acid \[\xrightarrow[Conc.\,{{H}_{2}}S{{O}_{4}}]{\Delta }\] product. The product is treated with \[N{{a}_{2}}C{{O}_{3}}\] solution. The missing reagent in the above reaction is

    A) Phenol

    B) \[NaOH\]

    C) Ethanol

    D) methanol

    View Answer play_arrow
  • question_answer86) The compound which forms acetaldehyde when heated with dilute \[NaOH\], is

    A) 1, 1-dichloroethane

    B) 1, 1, 1-trichloroethane

    C) 1-chloroethane

    D) 1, 2-dichloroethane

    View Answer play_arrow
  • question_answer87) Arrange the following in the increasing order of their basic strengths \[C{{H}_{3}}N{{H}_{2}}\] , \[{{(C{{H}_{3}})}_{2}}NH\] , \[{{(C{{H}_{3}})}_{3}}N,N{{H}_{3}}\]

    A) \[N{{H}_{3}}<{{(C{{H}_{3}})}_{3}}N<{{(C{{H}_{3}})}_{2}}NH<C{{H}_{3}}N{{H}_{2}}\]

    B) \[N{{H}_{3}}<{{(C{{H}_{3}})}_{3}}N<C{{H}_{3}}N{{H}_{2}}<{{(C{{H}_{3}})}_{2}}NH\]

    C) \[{{(C{{H}_{3}})}_{3}}N<N{{H}_{3}}<C{{H}_{3}}<C{{H}_{3}}N{{H}_{2}}<{{(C{{H}_{3}})}_{2}}NH\]

    D) \[C{{H}_{3}}N{{H}_{2}}<{{(C{{H}_{3}})}_{2}}NH<{{(C{{H}_{3}})}_{3}}N<N{{H}_{3}}\]

    View Answer play_arrow
  • question_answer88) The one which has least iodine value is

    A) Sunflower oil

    B) Ginger oil

    C) Ghee

    D) Groundnut oil

    View Answer play_arrow
  • question_answer89) A diabetic person carries a packet of glucose with him always, because

    A) Glucose reduces the blood sugar level slowly

    B) Glucose increases the blood sugar level slowly

    C) Glucose reduces the blood sugar level

    D) Glucose increases the blood sugar level almost instantaneously

    View Answer play_arrow
  • question_answer90) There are 20 naturally occurring amino acids. The maximum number of tripe tides that can be obtained is

    A) \[8000\]

    B) \[6470\]

    C) \[7465\]

    D) \[5360\]

    View Answer play_arrow
  • question_answer91) Cooking is fast in a pressure cooker, because

    A) Food particles are effectively smashed

    B) Water boils at higher temperature inside the pressure cooker

    C) Food is cooked at constant volume

    D) Loss of heat due to radiation is minimum

    View Answer play_arrow
  • question_answer92) The ore that is concentrated by froth floatation process is

    A) Zincite

    B) cinnabar

    C) Bauxite

    D) malachite

    View Answer play_arrow
  • question_answer93) The correct set of four quantum numbers for outermost electron of potassium \[(Z=19)\] is

    A) \[4,1,0,\frac{1}{2}\]

    B) \[3,1,0,\frac{1}{2}\]

    C) \[4,0,0,\frac{1}{2}\]

    D) \[3,0,0,\frac{1}{2}\]

    View Answer play_arrow
  • question_answer94) A body of mass x kg is moving with a velocity of \[100\text{ }m{{s}^{-1}}\]. Its de-Broglie wavelength is\[6.62\times {{10}^{-35}}m\]. Hence, x is \[(h=6.62\times {{10}^{-34}}Js)\]

    A) \[0.1kg\]

    B) \[0.25kg\]

    C) \[0.15kg\]

    D) \[0.2kg\]

    View Answer play_arrow
  • question_answer95) The correct order of ionisation energy of C, N, O, F is

    A) \[F<O<N<C~\]

    B) \[F<N<C<O\]

    C) \[C<N<O<F\]

    D) \[C<O<N<F\]

    View Answer play_arrow
  • question_answer96) The oxide of an element whose electronic configuration is \[1{{s}^{2}},2{{s}^{2}},2{{p}^{6}},3{{s}^{1}}\]is

    A) neutral

    B) Amphoteric

    C) basic

    D) Acidic

    View Answer play_arrow
  • question_answer97) The characteristic not related to alkali metal is

    A) High ionisation energy

    B) Their ions are isoelectronic with noble gases

    C) Low melting point

    D) Low electronegativity

    View Answer play_arrow
  • question_answer98) Among the following, the compound that contains ionic, covalent and coordinate linkage is

    A) \[N{{H}_{3}}\]

    B) \[N{{H}_{4}}Cl\]

    C) \[NaCl\]

    D) \[CaO\]

    View Answer play_arrow
  • question_answer99) A covalent molecule \[A{{B}_{3}}\] has pyramidal structure. The number of lone pair and bond pair of electron in the molecule are respectively

    A) \[2\] and \[2\]

    B) \[0\] and \[4\]

    C) \[3\] and \[1\]

    D) \[1\] and \[3\]

    View Answer play_arrow
  • question_answer100) Excess of carbon dioxide is passed through \[50mL\]of \[0.5M\]calcium hydroxide solution. After the completion of the reaction, the solution was evaporated to dryness. The solid calcium carbonate was completely neutralised with 0.1 N hydrochloric acid. The volume of hydrochloric acid required is (Atomic mass of calcium = 40)

    A) \[300c{{m}^{3}}\]

    B) \[200c{{m}^{3}}\]

    C) \[500c{{m}^{3}}\]

    D) \[400c{{m}^{3}}\]

    View Answer play_arrow
  • question_answer101) A bivalent metal has an equivalent mass of 32. The molecular mass of the metal nitrate is

    A) \[182\]

    B) \[168\]

    C) \[192\]

    D) \[188\]

    View Answer play_arrow
  • question_answer102) The rms velocity of molecules of a gas of density \[4kg\,{{m}^{-3}}\]and pressure \[1.2\times {{10}^{5}}\,N{{m}^{-2}}\]is

    A) \[300m{{s}^{-1}}\]

    B) \[900m{{s}^{-1}}\]

    C) \[120m{{s}^{-1}}\]

    D) \[600m{{s}^{-1}}\]

    View Answer play_arrow
  • question_answer103) \[0.5mole\]of each of \[{{H}_{2}},S{{O}_{2}}\]and are kept in a container. A hole was made in the container. After 3 h, the order of partial pressures in the container will be

    A) \[pS{{O}_{2}}>p{{H}_{2}}>pC{{H}_{4}}\]

    B) \[pS{{O}_{2}}>pC{{H}_{4}}>p{{H}_{2}}\]

    C) \[p{{H}_{2}}>pS{{O}_{2}}>pC{{H}_{4}}\]

    D) \[p{{H}_{2}}>pC{{H}_{4}}>pS{{O}_{2}}\]

    View Answer play_arrow
  • question_answer104) The enthalpy of formation of \[N{{H}_{3}}\] is. The enthalpy change for the \[-46kJ\,mo{{l}^{-1}}\] reaction \[2N{{H}_{3}}(g)\xrightarrow{{}}{{N}_{2}}(g)+3{{H}_{2}}(g)\] is

    A) \[+184kJ\]

    B) \[+23\text{ }kJ\]

    C) \[+92kJ\]

    D) \[+46kJ\]

    View Answer play_arrow
  • question_answer105) \[5moles\]of \[S{{O}_{2}}\] and 5 moles of \[{{O}_{2}}\] are allowed to react. At equilibrium, it was found that 60% of \[S{{O}_{2}}\] is used up. If the partial pressure of the equilibrium mixture is one atmosphere, the partial pressure of \[{{O}_{2}}\] is

    A) \[0.82atm\]

    B) \[0.52atm\]

    C) \[0.21atm\]

    D) \[0.41atm\]

    View Answer play_arrow
  • question_answer106) \[2HI(g){{H}_{2}}(g)+{{I}_{2}}(g)\] The equilibrium constant of the above reaction is \[6.4\]at\[300K\]. If \[0.25\] mole each of \[{{H}_{2}}\] and \[12\]are added to the system, the equilibrium constant will be

    A) \[6.4\]

    B) \[0.8\]

    C) \[3.2\]

    D) \[1.6\]

    View Answer play_arrow
  • question_answer107) Rate of physical adsorption increases with

    A) Decrease in surface area

    B) Decrease in temperature

    C) Decrease in pressure

    D) Increase in temperature

    View Answer play_arrow
  • question_answer108) IUPAC name of \[{{(C{{H}_{3}})}_{3}}CCl\]is

    A) n-butyl chloride

    B) 3-chloro butane

    C) 2-chloro 2-methyl propane

    D) Mxityl chloride

    View Answer play_arrow
  • question_answer109) Lucas test is associated with

    A) Aldehydes

    B) Phenols

    C) Carboxylic acids

    D) Alcohols

    View Answer play_arrow
  • question_answer110) An organic compound on heating with \[CuO\] produces \[C{{O}_{2}}\] but no water. The organic compound may be

    A) Carbon tetrachloride

    B) Chloroform

    C) Methane

    D) Ethyl iodide

    View Answer play_arrow
  • question_answer111) The condensation polymer among the following is

    A) Rubber

    B) Protein

    C) PVC

    D) Polyethene

    View Answer play_arrow
  • question_answer112) The order of stability of metal oxides is

    A) \[A{{l}_{2}}{{O}_{3}}<MgO<F{{e}_{2}}{{O}_{3}}<C{{r}_{2}}{{O}_{3}}\]

    B) \[C{{r}_{2}}{{O}_{3}}<MgO<A{{l}_{2}}{{O}_{3}}<F{{e}_{2}}{{O}_{3}}\]

    C) \[F{{e}_{2}}{{O}_{3}}<C{{r}_{2}}{{O}_{3}}<A{{l}_{2}}{{O}_{3}}<MgO\]

    D) \[F{{e}_{2}}{{O}_{3}}<A{{l}_{2}}{{O}_{3}}<C{{r}_{2}}{{O}_{3}}<MgO\]

    View Answer play_arrow
  • question_answer113) The temperature of the slag zone in the metallurgy of iron using blast furnace is

    A) \[1200-{{1500}^{o}}C\]

    B) \[1500-{{1600}^{o}}C\]

    C) \[400-{{700}^{o}}C\]

    D) \[800-{{1000}^{o}}C\]

    View Answer play_arrow
  • question_answer114) The function of \[Fe{{(OH)}_{3}}\] in the contact process is

    A) to remove arsenic impurity

    B) to detect colloidal impurity

    C) to remove moisture

    D) to remove dust particles

    View Answer play_arrow
  • question_answer115) In which of the following, NH3 is not used?

    A) Toilers reagent

    B) Nesslers reagent

    C) Group reagent for the analysis of IV group basic radicals

    D) Group reagent for the analysis of III group basic radicals

    View Answer play_arrow
  • question_answer116) Argon is used

    A) In filling airships

    B) To obtain low temperature

    C) In high temperature welding

    D) In radiotherapy for treatment of cancer

    View Answer play_arrow
  • question_answer117) The incorrect statement in respect of chromyl chloride test is

    A) Formation of red vapours

    B) Formation of lead chromate

    C) Formation of chromyl chloride

    D) Liberation of chlorine

    View Answer play_arrow
  • question_answer118) The magnetic moment of a transition metal ion is \[\sqrt{15}\text{ }BM\]. Therefore, the number of unpaired electrons present in it, is

    A) \[3\]

    B) \[4\]

    C) \[1\]

    D) \[2\]

    View Answer play_arrow
  • question_answer119) The IUPAC name of \[{{[Co{{(N{{H}_{3}})}_{5}}ONO]}^{2+}}\]ion is

    A) penta ammine nitrito cobalt (IV) ion

    B) penta ammine nitrito cobalt (III) ion

    C) penta ammine nitro cobalt (III) ion

    D) penta ammine nitro cobalt (IV) ion

    View Answer play_arrow
  • question_answer120) The oxidation state of Fe in the brown ring/ complex: \[[Fe{{({{H}_{2}}O)}_{5}}NO]S{{O}_{4}}\]is

    A) \[+3\]

    B) \[0\]

    C) \[+2\]

    D) \[+1\]

    View Answer play_arrow
  • question_answer121) The respiratory quotient during cellular respiration would depend on

    A) the nature of enzymes involved

    B) the nature of the substrate

    C) the amount of carbon dioxide released

    D) the amount of oxygen utilized

    View Answer play_arrow
  • question_answer122) Which of the following is not a green-house gas?

    A) Water vapour

    B) Carbon monoxide

    C) Methane

    D) Oxygen

    View Answer play_arrow
  • question_answer123) Both husband and wife have normal vision though their fathers were colorblind and mothers did not have any gene for colorblindness. The probability of their daughters becoming colorblind is

    A) 50%

    B) 75%

    C) 0%

    D) 25%

    View Answer play_arrow
  • question_answer124) An animal, which has both exoskeletal and endoskeletal structures is a

    A) fresh-water mussel

    B) tortoise

    C) frog

    D) jelly fish

    View Answer play_arrow
  • question_answer125) 2n = 16 in a primary spermatocyte, which is in metaphase of first meiotic division. What shall be the total number of chromatids in each of the secondary spermatocyte?

    A) 32

    B) 8

    C) 16

    D) 24

    View Answer play_arrow
  • question_answer126) Identify the group, which includes animals all of which give birth to young ones directly?

    A) Dolphin, kangaroo, bat, cat

    B) Platypus, penguin, bat, hippopotamus

    C) Shrew, bat, kiwi, cat

    D) Lion, whale, ostrich, bat

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  • question_answer127) Compare the statements A and B.

    Statement A Blood sugar level falls rapidly after hepatectomy.
    Statement B The glycogen of the liver is the principal source of blood sugar.
    Select the correct description.

    A) Both the statements A and B are correct and B is the reason for A

    B) Statement A is correct and B is wrong

    C) Statement A is wrong and B is correct

    D) Both the statements A and B are correct and B is not the reason for A

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  • question_answer128) What is/are true about heart wood?

    [A] It does not help in water conduction.
    [B] It is also called alburnum.
    [C] It is dark in colour but very soft.
    [D] It has tracheary elements which are filled with tannin, resin, etc.

    A) B, C and D

    B) A and D

    C) B and D

    D) A, B and C

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  • question_answer129) Compare the statements A and B.

    Statement A Auxins promote apical dominance by suppressing the activity of lateral buds.
    Statement B In moriculture, periodic pruning of shoot tips is done to make mulberry plants bushy.
    Select the correct description.

    A) Both the statements A and B are correct and A is the reason for B

    B) Statement A is correct and B is wrong

    C) Statement A is wrong and B is correct

    D) Both the statements A and B are correct and A is not the reason for B

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  • question_answer130) Bryophytes resemble algae in the following aspects

    A) Filamentous body, presence of vascular tissues and autotrophic nutrition

    B) Differentiation of plant body into root, stem and leaves and aurotrophic nutrition

    C) Thallus like plant body, presence of roots and autotrophic nutrition

    D) Thallus like plant body, lack of vascular tissues and autotrophic nutrition

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  • question_answer131) Compare the statements A and B.

    Statement A A monocistronic mRNA can produce several types of polypeptide chains.
    Statement B The terminator codon is present on the mRNA.
    Select the correct description.

    A) Both the statements A and B are wrong

    B) Statement A is correct and B is wrong

    C) Statement A is wrong and B is correct

    D) Both the statements A and B are correct

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  • question_answer132) Stoma opens, when

    A) guard cells swell due to an increase in their water potential

    B) guard cells swell by endosmosis due to influx of hydrogen ions (protons)

    C) guard cells swell by endosmosis due to efflux of potassium ions

    D) guard cells swell due to a decrease in their water potential

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  • question_answer133) Which of the following is properly matched?

    A) Platyhelminthes - Trematoda - Planaria

    B) Echinodermata - Asteroidea - Star fish

    C) Arthropoda - Insecta - Spider

    D) Mollusca - Cephalopoda - Unio

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  • question_answer134) A man is admitted to a hospital. He is suffering from an abnormally low body temperature, loss of appetite and extreme thirst. His brain scan would probably show a tumour in

    A) medulla oblongata

    B) pons

    C) cerebellum

    D) hypothalamus

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  • question_answer135) Identify the incorrect statement with respect to Calvin cycle

    A) The carboxylation of RuBP is catalysed by rubisco

    B) The first stable intermediate compound formed is phosphoglycerate

    C) 18 molecules of ATP are synthesized during carbon fixation

    D) NADPH + H+ produced in light reaction is used to reduce diphosphoglycerate

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  • question_answer136) The agents, which are known to cause CJD are

    A) protein particles

    B) a class of bacteria

    C) a class of viruses

    D) fungi

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  • question_answer137) In crop improvement programmes, virus-free clones can be obtained through

    A) grafting

    B) hybridization

    C) embryo culture

    D) shoot apex culture

    View Answer play_arrow
  • question_answer138) A person is suffering from frequent episodes of nasal discharge, nasal congestion, reddening of eyes and watery eyes. These are the symptoms of

    A) cyanosis

    B) bronchitis

    C) rhinitis

    D) bronchial carcinoma

    View Answer play_arrow
  • question_answer139) Some important events in the human female reproductive cycle are given below. Arrange the events in a proper sequence.

    A : Secretion of FSH
    B : Growth of corpus luteum
    C : Growth of the follicle and oogenesis
    D: Ovulation
    E : Sudden increase in the levels of LH

    A) C \[\to \]A \[\to \]D \[\to \]B \[\to \]E

    B) A \[\to \]C \[\to \]E \[\to \]D \[\to \]B

    C) A \[\to \]D \[\to \]C \[\to \]E \[\to \]B

    D) B \[\to \]A \[\to \]C \[\to \]D \[\to \]E

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  • question_answer140) Compare the statements A and B.

    Statement A Ranikhet disease is the disease of poultry.
    Statement B It is caused by a virus.
    Select the correct description.

    A) Both the statements A and B are correct

    B) Statement A is correct and B is wrong

    C) Statement A is wrong and B is correct

    D) Both the statements A and B are wrong

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  • question_answer141) The offspring produced from a marriage have only 0 or A blood groups. Of the genotypes given below, the possible genotypes of the parents would be

    A) \[{{|}^{A}}{{|}^{A}}\]and \[{{|}^{A}}{{|}^{O}}\]

    B) \[{{|}^{O}}{{|}^{O}}\]and \[{{|}^{O}}{{|}^{O}}\]

    C) \[{{|}^{A}}{{|}^{A}}\]and \[{{|}^{O}}{{|}^{O}}\]

    D) \[{{|}^{A}}{{|}^{O}}\]and \[{{|}^{O}}{{|}^{O}}\]

    View Answer play_arrow
  • question_answer142) A dorsal horn is present on the ......... of mulberry silk worm (caterpillar).

    A) head

    B) 8thabdominal segment

    C) 5th abdominal segment

    D) 2nd thoracic segment

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  • question_answer143) A plant has an androecium with monadelphous stamens, monothecous and reniform anthers. The corolla exhibits contorted aestivation. The plant could be

    A) Rauwolfia

    B) Vinca

    C) Nerium

    D) Hibiscus

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  • question_answer144) Transpiration facilitates

    A) electrolyte balance

    B) opening of stomata

    C) absorption of water by roots

    D) excretion of minerals

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  • question_answer145) The cross-section of the body of an invertebrate is given below. Identify the animal, which has this body plan.

    A) Cockroach

    B) Roundworm

    C) Planaria

    D) Earthworm

    View Answer play_arrow
  • question_answer146) In an experiment demonstrating the evolution of oxygen in Hydrilla, sodium bicarbonate is added to water in the experimental set-up. What would happen if all other conditions are favourable?

    A) Amount of oxygen evolved decreases as carbon dioxide in water is absorbed by sodium bicarbonate

    B) Amount of oxygen evolved increases as the availability of carbon dioxide increases

    C) Amount of oxygen evolved decreases as the availability of carbon dioxide increases

    D) Amount of oxygen evolved increases as carbon dioxide in water is absorbed by sodium bicarbonate

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  • question_answer147) Which substance is in higher concentration in blood than in glomerular filtrate?

    A) Water

    B) Glucose

    C) Urea

    D) Plasma proteins

    View Answer play_arrow
  • question_answer148) All the following are included under in situ conservation except

    A) botanical garden

    B) biosphere reserve

    C) national park

    D) sanctuary

    View Answer play_arrow
  • question_answer149) Match the compounds given in Column I with the number of carbon atoms present in them which are listed under Column II. Choose the answer which gives the correct combination of alphabets of the two columns.

    Column I Column II
    A. Oxaloacetate p. 6 - C compound
    B. Phosphoglycer-aldehyde q. 5 - C compound
    C. Isocitrate r. 4 - C compound
    D. \[\alpha \]- ketoglutarate s. 3 - C compound
    t. 2 - C compound

    A) A- s B- t C- q D-r

    B) A-r B-s C-p D-q

    C) A-r B-t C-p D-q

    D) A-q B-s C-p D-t

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  • question_answer150) Identify the correctly matched pair/pairs of the germ layers and their derivatives.

    [A] Ectoderm - Epidermis
    [B] Endoderm - Dennis
    [C] Mesoderm - Muscles
    [D] Mesoderm - Notochord
    [E] Endoderm - Enamel of teeth

    A) A, C and D only

    B) A, B, C and E only

    C) A and D only

    D) A and B only

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  • question_answer151) Identify the correct statement.

    A) Because of marked climatic variations, plants growing near the sea shore do not produce annual rings.

    B) The age of the plant can be determined by its height.

    C) Healing of damaged tissue is because of the activity of sclerenchyma cells.

    D) Grafting is difficult in monocot plants as they have scattered vascular bundles.

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  • question_answer152) Blood stains are found at the site of a murder. If DNA profiling technique is to be used for identifying the criminal, which of the following is ideal for use?

    A) Serum

    B) Erythrocytes

    C) Leucocytes

    D) Platelets

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  • question_answer153) During endocytosis.

    A) the cell divides its cytoplasm during mitosis

    B) the cell digests itself

    C) the cell engulfs and internalises materials using its membrane

    D) the cell enables the extracellular digestion of large molecules

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  • question_answer154) Match the names of the economically important plants (or their products) listed in with the families to which they belong given in Column II. Choose the answer which gives the correct combination of alphabets of the two columns.

    Column I Column II
    A. Sunflower p. Acanthaceae
    B. Tulsi q. Compositae
    C. Coffee r. Labiatae
    D. Vasaka s. Rubiaceae
    t. Euphorbiaceae

    A) A- r B- t C-s D-q

    B) A-q B-r C-s D-p

    C) A-q B- s C-p D-t

    D) A-s B- r C-p D-q

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  • question_answer155) Which of the following hormones does not naturally occur in plants?

    A) 2, 4-D

    B) IAA

    C) GA

    D) ABA

    View Answer play_arrow
  • question_answer156) A large quantity of fluid is filtered every day by the nephrons in the kidneys. Only about 1% of it is excreted as urine. The remaining 99% of the filtrate

    A) gets collected in the renal pelvis

    B) is lost as sweat

    C) is stored in the urinary bladder

    D) is reabsorbed into the blood

    View Answer play_arrow
  • question_answer157) When DNA replication starts

    A) The leading strand produces Okazaki fragments

    B) the hydrogen bonds between the nucleotides of two strands break

    C) the phosphodiester bonds between the adjacent nucleotides break

    D) the bonds between the nitrogen base and deoxyribose sugar break

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  • question_answer158) Fleshy fruits with stony endocarp are called

    A) capsules

    B) berries

    C) pomes

    D) drupes

    View Answer play_arrow
  • question_answer159) Which statement about photosynthesis is false?

    A) The electron carriers involved in photophosphorylation are located on the thylakoid membranes.

    B) Photosynthesis is a redox process, in which water is oxidised and carbon dioxide is reduced.

    C) The enzymes required for carbon fixation are located only in the grana of chloroplasts.

    D) In green plants, both PS-I and PS-II are required for the formation of\[NADPH\text{ }+\text{ }{{H}^{+}}\].

    View Answer play_arrow
  • question_answer160) Darwinism explains all the following except

    A) within each species, there are variations

    B) organisms tend to produce more number of offspring that can survive

    C) offspring with better traits that overcome competition are best suited for the environment

    D) variations are inherited from parents to offspring through genes

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  • question_answer161) Pollen grains of a plant whose 2n = 28 are cultured to get callus by tissue culture method. What would be the number of chromosomes in the cells of the callus?

    A) 28

    B) 21

    C) 14

    D) 56

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  • question_answer162) A true breeding plant producing red flowers is crossed with a pure plant producing white flowers. Allele for red colour of flower is dominant. After selfing the plants of first filial generation, the proportion of plants producing white flowers in the progeny would be

    A) \[\frac{3}{4}\]

    B) \[\frac{1}{4}\]

    C) \[\frac{1}{3}\]

    D) \[\frac{1}{2}\]

    View Answer play_arrow
  • question_answer163) Which of the following prevents the conversion of prothrombin to thrombin in an undamaged blood vessel?

    A) Heparin

    B) Calcium ions

    C) Thromboplastin

    D) Fibrinogen

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  • question_answer164) The characteristic that is shared by urea, uric acid and ammonia is/are [A] They are nitrogenous wastes. [B] They all need very large amount of water for excretion. [C] They are all equally toxic. [D] They are produced in the kidneys.

    A) A and C

    B) A and D

    C) A, C and D

    D) A only

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  • question_answer165) RBC and a plant cell (with thick cell wall) are placed in distilled water. The solute concentration is the same in both the cells. What changes would be observed in them?

    A) Both plant cell and RBC would not undergo any change.

    B) The RBC would increase in size and burst while the plant cell would remain about the same size.

    C) The plant cell would increase in size and burst while the RBC would remain about the same size.

    D) Both plant cell and RBC would decrease in size and collapse.

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  • question_answer166) Which of the following hormones does not contain a polypeptide?

    A) Prostaglandin

    B) Oxytocin

    C) Insulin

    D) Antidiuretic hormone

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  • question_answer167) Ribose sugar is present in

    A) RNA polymerase, RNA and ATP

    B) RNA only

    C) RNA polymerase and ATP

    D) RNA and ATP

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  • question_answer168) Most of the endangered species are the victims of

    A) competition with introduced species

    B) habitat destruction

    C) over - hunting

    D) acid - rain

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  • question_answer169) Damage to thymus in a child may lead to

    A) loss of cell - mediated immunity

    B) a reduction in the haemoglobin content in blood

    C) a reduction in the amount of plasma proteins

    D) loss of antibody-mediated immunity

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  • question_answer170) The diagram of the section of a maize grain is given below. Identify the parts labelled A, B, C and D.

    A) Endosperm Coleopdie Scutellum Aleurone layer

    B)

    A = Cotyledon
    B = Coleoptile
    C = Scutellum
    D = Epithelium

    C)

    A = Endosperm
    B = Coleoptile
    C = Scutellum
    D = Epithelium

    D)

    A = Endosperm
    B = Coleorrhiza
    C = Scutellum
    D = Epithelium

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  • question_answer171) Examples for lateral meristems are

    A) phellogen and procambium

    B) fascicular cambium and procambium

    C) procambium and dermatogen

    D) fascicular cambium and cork cambium

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  • question_answer172) Vitellogenesis occurs during the formation of

    A) primary oocyte in the Graafian follicle

    B) oogonial cell in the Graafian follicle

    C) ootid in the fallopian tube

    D) secondary oocyte in the fallopian tube

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  • question_answer173) A bacterium is capable of withstanding extreme heat, dryness and toxic chemicals. This indicates that it is probably able to form

    A) a thick peptidoglycan wall

    B) endospores

    C) endotoxins

    D) endogenous buds

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  • question_answer174) In the absence of enterokinase, the digestion of ......... would be affected in our intestine.

    A) maltose

    B) amino acid

    C) albumin

    D) starch

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  • question_answer175) The greatest threat to genetic diversity in agricultural crops is

    A) extensive use of insecticides and pesticides

    B) extensive mixed cropping

    C) introduction of high yielding varieties

    D) extensive use of fertilizers

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  • question_answer176) Nosema bombycis, which causes pebrine in silk worms is a

    A) fungus

    B) virus

    C) bacterium

    D) protozoan

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  • question_answer177) Palaeontologists unearthed a human skull during excavation. A small fragment of the scalp tissue was still attached to it. Only little DNA could be extracted from it. If the genes of the ancient man need to be analysed, the best way of getting sufficient amount of DNA from this extract is

    A) hybridising the DNA with a DNA probe

    B) subjecting the DNA to polymerase chain reaction

    C) subjecting the DNA to gel electrophoresis

    D) treating the DNA with restriction endonucleases

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  • question_answer178) Which of the following would be insignificant amount in xylem sap?

    A) Sugar

    B) Nitrates

    C) Phosphates

    D) Water

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  • question_answer179) If the person shows the production of interferons in his body, chances are that he is suffering from

    A) anthrax

    B) malaria

    C) measles

    D) tetanus

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  • question_answer180) The RER in the cell synthesized a protein which would be later used in building the plasma membrane. But it is observed that the protein in the membrane is slightly different from the protein made in the RER. The protein was probably modified in another cell organelle. Identify that organelle in the given diagram.

    A) D

    B) A

    C) B

    D) C

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