Solved papers for MGIMS ­ WARDHA MGIMS WARDHA Solved Paper-2015

done MGIMS WARDHA Solved Paper-2015

  • question_answer1) A solid sphere of radius r made of a material of bulk modulus K is surrounded by a liquid in cylindrical container. The massless piston of area A floats on the surface of the liquid. If a mass m is placed on a piston to compress the liquid, then the fractional change in the radius of the sphere will be

    A) \[\frac{mg}{AK}\]

    B) \[\frac{2mg}{AK}\]

    C) \[\frac{3mg}{AK}\]

    D) \[\frac{mg}{3AK}\]

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  • question_answer2) If a liquid is flowing through a horizontal tube, then\[p+\frac{1}{2}\rho {{V}^{2}}=\]constant. This shows that

    A) If\[\rho \]increases then V also increases

    B) \[\rho \]and V both are constant

    C) If\[\rho \]increases then V decreases

    D) If\[\rho \]decreases then V also decreases

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  • question_answer3) .Water wets the walls of its glass container due to the fact that

    A) cohesive force is greater than adhesive force

    B) cohesive force is equal to the adhesive force

    C) adhesive force is greater than the cohesive force

    D) cohesive and adhesive forces form action-reaction pair

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  • question_answer4) If P and Q are two non-collinear unit vectors and if\[|P+Q|=\sqrt{3},\]then the value of\[(P-Q)(2P+Q)\]will be

    A) 1

    B) 2

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

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

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  • question_answer5) A gas bubble forms an explosion under water which oscillate with a period\[T\propto {{p}^{a}}{{\rho }^{b}}{{E}^{c}},\]where p is the static pressure, p is the density of water and E is the total energy of explosion. Then, the values of q, b and c will be

    A) \[-\frac{5}{6},\frac{1}{2},\frac{1}{3}\]

    B) \[\frac{2}{5},\frac{1}{3},\frac{1}{4}\]

    C) \[\frac{4}{5},\frac{9}{8},\frac{1}{4}\]

    D) \[\frac{3}{2},\frac{1}{4},\frac{5}{6}\]

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  • question_answer6) If a particle moves a distance\[x\]at a speed\[{{v}_{1}}\] and comes back with speed\[{{v}_{2}},\]then the average speed and average velocity during this round trip will respectively be

    A) \[0,{{v}_{1}}+{{v}_{2}}\]

    B) \[\frac{2{{v}_{1}}{{v}_{2}}}{{{v}_{1}}+{{v}_{2}}},0\]

    C) \[{{v}_{1}}+{{v}_{2}},0\]

    D) \[{{v}_{1}}-{{v}_{2}},\frac{2{{v}_{1}}{{v}_{2}}}{{{v}_{1}}+{{v}_{2}}}\]

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  • question_answer7) On an electron in an atom both electric and gravitational forces are collinear we neglect gravitational force\[({{F}_{G}})\]in comparison to electric force\[({{F}_{E}}),\]because

    A) \[{{F}_{E}}>{{F}_{G}}\]

    B) \[{{F}_{N}}>{{F}_{E}}\]

    C) \[{{F}_{E}}>>{{F}_{G}}\]

    D) \[{{F}_{N}}>>{{F}_{G}}\]

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  • question_answer8) A metal block of mass 1 kg is resting on a frictionless horizontal plane. It is struck by a jet releasing water at a rate of 1 m/s and at a speed of 4 m/s. Then, the initial acceleration of the block will be

    A) \[2\text{ }m/{{s}^{2}}\]

    B) \[\text{8 }m/{{s}^{2}}\]

    C) \[\text{1 }m/{{s}^{2}}\]

    D) \[\text{4 }m/{{s}^{2}}\]

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  • question_answer9) A body of mass 5 kg moves on a straight path as a function of time\[x\text{ }={{t}^{3}}-121\]. The force on the body at\[t=5s\]will be

    A) 100 N

    B) 150 N

    C) 120 N

    D) 130 N

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  • question_answer10) The potential energy of a certain spring when stretched through a distance\[x\]is 20 J. The amount of work that must be done on this spring to stretch it through an additional distance \[\frac{x}{2}\]will be

    A) 20J

    B) 25J

    C) 5J

    D) 15J

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  • question_answer11) A flywheel of moment of inertia \[0.4\text{ }kg-{{m}^{2}}\] and radius 20 cm is free to rotate about a central axis. If a string is wrapped on its circumference and it is pulled with a force of 10 N, then the change in its angular velocity after 4 s will be

    A) 10rad/s

    B) 20rad/s

    C) 40rad/s

    D) 5rad/s

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  • question_answer12) Three identical spheres of mass m each are placed at the corners of an equilateral triangle of side 1m. Taking one of the corners as the 2 origin, the position vector of centre of mass is

    A) \[\frac{1}{2}\hat{i}+\frac{\sqrt{3}}{2}\hat{j}\]

    B) \[\frac{1}{2}\hat{i}+\frac{1}{2\sqrt{3}}\hat{j}\]

    C) \[\hat{i}+\hat{j}\]

    D) \[2\hat{i}-\hat{j}\]

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  • question_answer13) A lift is ascending with an acceleration simple pendulum suspended from its ceiling oscillates with a period T. The period of oscillation of pendulum when the lift is stationary will be

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

    B) \[T\]

    C) \[2T\]

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

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  • question_answer14) The driver of a truck travelling with a velocity v suddenly notice a brick wall in front of him at a distance r. How the driver avoid himself by crashing into the wall?

    A) By speeding up the truck

    B) By applying a brake

    C) By slowing down the truck

    D) By taking a circular turn

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  • question_answer15) A stationary source emits a sound moving towards a wall with a velocity u. Speed of sound in air is v. The fractional change in the wavelength of the sound sent and the reflected sound is

    A) \[\frac{v+u}{v-u}\]

    B) \[\frac{2u}{v+u}\]

    C) \[\frac{2v}{v+u}\]

    D) \[\frac{u+v}{2v}\]

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  • question_answer16) Mass of 1 mol of air is\[29\times {{10}^{-3}}kg\]. The speed of sound at STP will be nearly

    A) 3325m/s

    B) 340 m/s

    C) 320 m/s

    D) 325 m/s

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  • question_answer17) Two wires of same material and length are stretched by the same force. Their masses are in the ratio\[4:3\]. The ratio of their elongation will be

    A) \[16:9\]

    B) \[9:16\]

    C) \[4:3\]

    D) \[3:4\]

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  • question_answer18) Surface tension of a detergent solution is\[2.8\times {{10}^{-2}}N{{m}^{-1}}\]. The work done in blowing a bubble of diameter 1cm will be nearly

    A) \[1.24\times {{10}^{-4}}J\]

    B) \[1.76\times {{10}^{-5}}J\]

    C) \[1.8\times {{10}^{-3}}J\]

    D) \[2.4\times {{10}^{-4}}J\]

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  • question_answer19) A particle executes SHM of amplitude 4 cm and time period 2 s. Then, the time taken by it to move from positive extreme position to half the amplitude is

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

    B) \[\frac{1}{2}s\]

    C) \[\frac{1}{4}s\]

    D) \[2s\]

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  • question_answer20) An organ pipe open at one end is vibrating in second harmonic and is in resonance with another pipe open at both the ends and vibrating in second overtone. The ratio of length of two pipes is

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

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

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

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

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  • question_answer21) \[n\]balls each of mass m impinge elastically each second on a surface with velocity v. The average force experienced by the surface will be

    A) \[2nmv\]

    B) \[nmv\]

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

    D) \[4nmv\]

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  • question_answer22) A monkey of mass 30 kg climbs on a massless rope whose breaking strength is 450 N. The rope will break if the monkey (Take\[g=10\text{ }m/{{s}^{2}}\])

    A) climbs up with a uniform speed of 5 m/s

    B) climbs down with an acceleration\[4\text{ }m/{{s}^{2}}\]

    C) climbs up with an acceleration\[\text{6 }m/{{s}^{2}}\]

    D) climbs down with a uniform speed of\[\text{5 }m/{{s}^{2}}\]

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  • question_answer23) The angle to which a cyclist bends when he covers a circular path of 34.3 m in\[\sqrt{22}s\]is

    A) \[20{}^\circ \]

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

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

    D) \[45{}^\circ \]

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  • question_answer24) A gun of mass M fires a bullet of mass m with velocity v. Then, the recoil speed of the gun will be

    A) \[-\frac{m}{M}v\]

    B) \[\frac{2m}{M}v\]

    C) \[\frac{M}{m}v\]

    D) \[\frac{2M}{m}v\]

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  • question_answer25) A wire suspended vertically from one of its ends is stretched by attaching a weight 100 N to the lower end. The wire stretches by 1mm. The elastic energy stored in the wire is

    A) 0.02J

    B) 0.05J

    C) 0.1 J

    D) 0.2J

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  • question_answer26) A circular metal plate of radius 5 cm rests on a layer of centre oil 2mm thick whose coefficient of viscosity is 15.5 dyne\[c{{m}^{-2}}s\]. The value of shearing stress when a horizontal force move the plate with a speed of 5 cm/s will be

    A) 387.5 dyne\[c{{m}^{-2}}\]

    B) 328 dyne\[c{{m}^{-2}}\]

    C) 250 dyne\[c{{m}^{-2}}\]

    D) 428 dyne\[c{{m}^{-2}}\]

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  • question_answer27) The surface tension and vapour pressure of water at\[20{}^\circ C\]is\[7.28\times {{10}^{-2}}N{{m}^{-1}}\]and\[2.33\times {{10}^{3}}Pa\]respectively. The radius of the smallest spherical droplet which can form without evaporating is

    A) \[6.25\times {{10}^{-5}}m\]

    B) \[6.25\times {{10}^{-3}}m\]

    C) \[7.45\times {{10}^{+3}}m\]

    D) \[8.9\times {{10}^{-4}}m\]

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  • question_answer28) During adiabatic expansion, the volume of air increases by 4%. The percentage decrease in the pressure will be

    A) 3.2%

    B) 5.6%

    C) 1.5%

    D) 4.8%

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  • question_answer29) A simple pendulum of length\[{{I}_{1}}\]has a time period of 2 s and another pendulum length 4 has a time -period of 1 s. Then, the time period of pendulum -having length\[{{I}_{1}}-{{I}_{2}}\]will be

    A) 2 s

    B) 1.2 s

    C) 3s

    D) \[\sqrt{3}\,s\]

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  • question_answer30) Two sound waves with wavelengths 4 m and 5 m respectively each propagating in a gas with velocity 340 m/s. The number of beats per second will be

    A) 12 Hz

    B) 15Hz

    C) 17Hz

    D) 11 Hz

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  • question_answer31) Capacitance of a parallel plate capacitor becomes \[\frac{3}{2}\]times its original value if a dielectric slab of thickness\[\frac{d}{2}\]is inserted between the plates, where d is the separation between the plates. The dielectric constant of the slab is

    A) 4

    B) 2

    C) 3

    D) 1

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  • question_answer32) The electric potential Vat any point\[x,y,z\]in space is given by\[V=4{{x}^{2}}\]. The electric field at the point (2, 0, 1) in\[V{{m}^{-1}}\]is

    A) \[10\hat{j}\]

    B) \[20\hat{j}\]

    C) \[-16\hat{j}\]

    D) \[30\hat{j}\]

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  • question_answer33) The electric field in a region is given by\[E=(4\hat{i}+3\hat{j})V/m\]. The net flux passing through a square area of side 4 m parallel to 4 y-z plane is

    A) 32 V-m

    B) 16 V-m

    C) 12 V-m

    D) 64 V-m

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  • question_answer34) The current in a wire varies with time as \[I=5{{t}^{2}}+2t,\]where I is in ampere and t is in second. The quantity of charge which has to be passed through a cross-section of wire during the times\[t=4\]to\[t=6s\]is

    A) 220 C

    B) 340 C

    C) 273.34 C

    D) 280 C

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  • question_answer35) Three resistances of\[2\,\Omega ,3\,\Omega \].and\[6\,\Omega \]are connected in parallel and the combination is connected in series with 2 V battery having internal resistance of\[1\,\Omega \]. The current in the battery is

    A) 1A

    B) 3A

    C) 2A

    D) 4A

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  • question_answer36) An electric cable of copper has just one wire of radius 9 mm with resistance\[5\,\Omega \]. This single copper wire of cable is replaced by 4 different well insulated copper wires each of radius 3 mm. The total resistance of the cable now will be

    A) \[22.5\,\Omega \]

    B) \[45\,\Omega \]

    C) \[9\,\Omega \]

    D) \[11.25\,\Omega \]

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  • question_answer37) A rise of temperature\[5{}^\circ C\]is observed in a conductor by passing a current. If the current is doubled the rise in temperature will be

    A) \[10{}^\circ C\]

    B) \[20{}^\circ C\]

    C) \[5{}^\circ C\]

    D) \[25{}^\circ C\]

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  • question_answer38) The current density varies with radial distance r as\[j=a{{r}^{2}}\](where, a is a constant) in a cylindrical wire of radius R. The current passing through the wire between radial distance\[\frac{R}{4}\]and\[\frac{R}{4}\]is

    A) \[\frac{20\pi a{{R}^{4}}}{331}\]

    B) \[\frac{15\pi a{{R}^{4}}}{512}\]

    C) \[\frac{\pi a{{R}^{4}}}{332}\]

    D) \[\frac{3\pi a{{R}^{4}}}{864}\]

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  • question_answer39) An electron having mass\[9.1\times {{10}^{-31}}kg\]moves in a circular path of radius 0.4 m with velocity\[{{10}^{5}}\] m/s in a magnetic field. The strength of magnetic field is

    A) \[1.56\times {{10}^{-5}}T\]

    B) \[1.62\times {{10}^{-4}}T\]

    C) \[1.42\times {{10}^{-6}}T\]

    D) \[1.88\times {{10}^{-5}}T\]

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  • question_answer40) A current of 6.4 A is passed through the coil of galvanometer having 500 turns and each turn has an average area of\[3\times {{10}^{-4}}{{m}^{2}}\]. If a torque of 2 Nm is required for this coil carrying some current to set it parallel to a magnetic field then the strength of magnetic field will be

    A) 31T

    B) 33.34 T

    C) 32T

    D) 40T

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  • question_answer41) The magnetic moment of a short bar magnet is \[4\text{ }A{{m}^{2}}\]The magnetic induction at a point 10 cm away from its mid point on axial line is\[{{B}_{1}}\]and on the equatorial line is\[{{B}_{2}}\]then

    A) \[{{B}_{1}}=8\times {{10}^{-4}}T,{{B}_{2}}=4\times {{10}^{-4}}T\]

    B) \[{{B}_{1}}=2\times {{10}^{-4}}T,{{B}_{2}}=1\times {{10}^{-4}}T\]

    C) \[{{B}_{1}}=10\times {{10}^{-4}}T,{{B}_{2}}=5\times {{10}^{-4}}T\]

    D) \[{{B}_{1}}=6\times {{10}^{-4}}T,{{B}_{2}}=3\times {{10}^{-4}}T\]

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  • question_answer42) A beam of monochromatic light is incident on one face of an equilateral prism. The angle of incidence is\[55{}^\circ \]. If the angle of emergence is \[46{}^\circ \], then the angle of minimum deviation\[{{\delta }_{m}}\]will be

    A) \[>41{}^\circ \]

    B) \[<41{}^\circ \]

    C) \[=41{}^\circ \]

    D) \[\ge 41{}^\circ \]

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  • question_answer43) Mark the wrong statement regarding polarisation of light.

    A) The vibrations in a plane polarised light are perpendicular to the plane of polarization

    B) If a polarised light of intensity\[{{I}_{0}}\]is passed through an analyser the intensity of light transmitted is \[I={{I}_{0}}{{\cos }^{2}}\theta \]

    C) Polarisation is the property of longitudinal wave

    D) Tangent of, polarising angle is equal to the refractive index of medium upon which the light is incident

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  • question_answer44) The blue colour of sky is explained by

    A) reflection

    B) scattering

    C) polarisation

    D) refraction

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  • question_answer45) The speed of electromagnetic waves in vacuum is

    A) \[{{\mu }_{0}}{{\varepsilon }_{0}}\]

    B) \[\frac{1}{\sqrt{{{\mu }_{0}}{{\varepsilon }_{0}}}}\]

    C) \[\sqrt{{{\mu }_{0}}{{\varepsilon }_{0}}}\]

    D) \[\frac{1}{{{\mu }_{0}}{{\varepsilon }_{0}}}\]

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  • question_answer46) An electromagnetic wave travels along Z-axis. The pair of space and time varying field is

    A) \[{{E}_{y}},{{B}_{x}}\]

    B) \[{{B}_{y}},{{E}_{z}}\]

    C) \[{{E}_{x}},{{B}_{y}}\]

    D) \[{{E}_{z}},{{B}_{x}}\]

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  • question_answer47) The ratio of inductive reactance to capacitive reactance in an AC circuit will be

    A) \[\omega LC\]

    B) \[{{\omega }^{2}}L\]

    C) zero

    D) \[{{\omega }^{2}}LC\]

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  • question_answer48) The magnetic flux through a circuit of resistance R changes by\[\Delta \phi \]in times\[\Delta t\]. Then, the total amount of electric charge that passes in any point in the circuit during this time\[\Delta t\] will be

    A) \[Q=\frac{\Delta \phi }{R}\]

    B) \[Q=\Delta \phi .R\]

    C) \[Q=\frac{R\Delta t}{\Delta \phi }\]

    D) \[Q=\Delta t.R\]

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  • question_answer49) The value of angle of dip is zero at the magnetic equator because on it

    A) V and H are equal

    B) the value of V is zero

    C) the value of H is zero

    D) the value of V is infinity

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  • question_answer50) The wavelength of first Lyman series in the transition from\[n=2\]to\[n=1\]is

    A) 110 nm

    B) 120 nm

    C) 122 nm

    D) 125 nm

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  • question_answer51) When a radioactive isotope\[_{88}R{{a}^{228}}\]decay in series by the emission of 3a -particles and a \[\beta -\]particle, the isotope finally formed is

    A) \[_{82}{{X}^{216}}\]

    B) \[_{83}{{X}^{215}}\]

    C) \[_{88}{{X}^{216}}\]

    D) \[_{83}{{X}^{216}}\]

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  • question_answer52) \[{{\lambda }_{1}},{{\lambda }_{2}}\]and\[{{\lambda }_{3}}\]are de-Broglie wavelengths of electron, proton and\[\alpha -\]particle. If they are accelerated by same potential, then

    A) \[{{\lambda }_{1}}<{{\lambda }_{2}}<{{\lambda }_{3}}\]

    B) \[{{\lambda }_{1}}>{{\lambda }_{2}}>{{\lambda }_{3}}\]

    C) \[{{\lambda }_{1}}<{{\lambda }_{2}}>{{\lambda }_{3}}\]

    D) \[{{\lambda }_{1}}>{{\lambda }_{2}}<{{\lambda }_{3}}\]

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  • question_answer53) A transistor is connected in CE configuration. The supply to the collector is 8 V and the voltage drop across a resistor of\[400\,\Omega \]in the collector circuit is 0.5 V. If the current gain factor is\[\alpha =0.96\]then, the base current will be nearly

    A) \[52\,\mu A\]

    B) \[42\,\mu A\]

    C) \[32\,\mu A\]

    D) \[26\,\mu A\]

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  • question_answer54) The width of depletion layer in a\[p-n\] junction diode

    A) increases when a forward bias is applied

    B) increases when a reverse bias is applied

    C) decreases when a reverse bias is applied

    D) remains same irrespective of bias voltage

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  • question_answer55) In a step up transformer, the turns ratio of primary and secondary is\[1:4\]. A leclanche cell of emf 1.5 V is connected across the primary. The voltage developed across the secondary will be

    A) 3 V

    B) 6 V

    C) 1V

    D) zero

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  • question_answer56) Which of the following truth table is of NAND gate

    A)

    B)

    C)

    D)

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  • question_answer57) A the r mister is dipped in a water bath. As the temperature increases the current in the thermistor also increases. This is due to decrease in

    A) resistivity

    B) conductivity

    C) reactance

    D) capacitance

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  • question_answer58) In an AC circuit, voltage and current are given by\[V=50\,\sin (100t)V\]and\[I=500\sin \left( 100t+\frac{\pi }{3} \right)A\]. The power dissipated in the circuit is

    A) 25W

    B) 625W

    C) 1250W

    D) 100W

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  • question_answer59) The magnetic flux\[\phi \]in a closed circuit of resistance\[10\,\Omega \]. varies with time t (in second) as\[\pi =(4{{t}^{2}}-5t+1)Wb\]. The magnitude of induced current at\[t=0.20s\] is

    A) 0.12 A

    B) 0.38 A

    C) 0.34 A

    D) 0.12 A

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  • question_answer60) A galvanometer has a resistance of\[4\,\Omega \]and a full scale deflection is produced by 12 mA current. What resistance must be connected in series with it to enable it to read 1.2 V?

    A) \[45\,\Omega \]

    B) \[96\,\Omega \]

    C) \[80\,\Omega \]

    D) \[40\,\Omega \]

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  • question_answer61) The standard reduction potentials of half reactions are given below \[{{F}_{2}}(g)+2{{e}^{-}}\xrightarrow[{}]{{}}2{{F}^{-}}(aq);E{}^\circ =+2.85V\] \[C{{l}_{2}}(g)+2{{e}^{-}}\xrightarrow[{}]{{}}2C{{l}^{-}}(aq);E{}^\circ =+1.36V\] \[B{{r}_{2}}(g)+2{{e}^{-}}\xrightarrow[{}]{{}}2B{{r}^{-}}(aq);E{}^\circ =+1.06V\] \[{{I}_{2}}(g)+2{{e}^{-}}\xrightarrow[{}]{{}}2{{I}^{-}}(aq);E{}^\circ =+0.53V\] The strongest oxidising and reducing agents respectively are

    A) chlorine and iodine

    B) fluorine and iodine ion

    C) chloride and bromine

    D) bromine and iodine

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  • question_answer62) Aniline when diazotised in cold and then treated with dimethyl aniline gives a coloured product. The structure of coloured product would be

    A)

    B)

    C)

    D)

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  • question_answer63) A compound\[CuCl\]has face-centred cubic structure. Its density is\[3.4\text{ }g\text{ }c{{m}^{-3}}\]. The length of unit cell is

    A) \[8.734\overset{o}{\mathop{\text{A}}}\,\]

    B) \[5.834\overset{o}{\mathop{\text{A}}}\,\]

    C) \[5.783\overset{o}{\mathop{\text{A}}}\,\]

    D) \[8.153\overset{o}{\mathop{\text{A}}}\,\]

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  • question_answer64) What happens if\[CC{{l}_{4}}\]is treated with\[AgN{{O}_{3}}\]?

    A) A white ppt. of\[AgCl\]will form

    B) \[N{{O}_{2}}\]will be evolved

    C) \[CC{{l}_{4}}\]will dissolve in\[AgN{{O}_{3}}\]

    D) Nothing will happen

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  • question_answer65) One of the following metals forms a volatile compound and this property is taken advantage for its extraction. This metal is

    A) iron

    B) nickel

    C) cobalt

    D) tungsten

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  • question_answer66) At\[90{}^\circ C,\]pure water has\[[{{H}^{+}}]={{10}^{-6}}M,\]if 100 mL of\[0.2\text{ }M\text{ }HCl\]is added to 200mL of 0.1 M KOH at\[90{}^\circ C\]then pH of the resulting solution will be

    A) 5

    B) 6

    C) 7

    D) 4

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  • question_answer67) end product. Identify the end product

    A)

    B)

    C)

    D)

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  • question_answer68) In the given reaction,\[R-OH+HX\xrightarrow[{}]{{}}RX+{{H}_{2}}O\]the order of reactivity of alcohols is

    A) tertiary < secondary < primary

    B) tertiary > secondary > primary

    C) tertiary < secondary > primary

    D) secondary > primary > tertiary

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  • question_answer69) o-toluic acid on reaction with\[B{{r}_{2}}+Fe\]gives

    A)

    B)

    C)

    D)

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  • question_answer70) Which of the following reactions will not give a primary amine?

    A) \[C{{H}_{3}}NC\xrightarrow[{}]{LiA{{H}_{4}}}\]

    B) \[C{{H}_{3}}CN\xrightarrow[{}]{LiA{{H}_{4}}}\]

    C) \[C{{H}_{3}}CON{{H}_{2}}\xrightarrow[{}]{LiA{{H}_{4}}}\]

    D) \[C{{H}_{3}}CN{{H}_{2}}\xrightarrow[{}]{B{{r}_{2}}/KOH}\]

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  • question_answer71) A litre solution containing\[N{{H}_{4}}Cl\]and\[N{{H}_{4}}OH\]has hydroxide ion concentration of \[{{10}^{-6}}mol{{L}^{-1}}\]. Which of the following hydroxide could be precipitated when the solution is added to 1L solution of 0.1M metal ions?

    I. \[Ba{{(OH)}_{2}}({{K}_{sp}}=5\times {{10}^{-3}})\]
    II. \[Ni{{(OH)}_{2}}({{K}_{sp}}=1.6\times {{10}^{-16}})\]
    III. \[Mn{{(OH)}_{2}}({{K}_{sp}}=2\times {{10}^{-13}})\]
    IV. \[Fe{{(OH)}_{2}}({{K}_{sp}}=8\times {{10}^{-16}})\]

    A) I and IV

    B) III and IV

    C) II and IV

    D) II Ill and IV

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  • question_answer72) Intra molecular hydrogen bonding is present is

    A) nickel dimethyl glyoximate

    B) anti-pyridine-2-carboxaldoxime

    C) maleic acid monoanion

    D) All of the above

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  • question_answer73) Forty milliliter of CO was mixed 100 mL of\[{{O}_{2}}\] and the mixture was exploded. On cooling, the reaction mixture was shaken with KOH. What volume of gas is left?

    A) 80 mL of \[{{O}_{2}}\]

    B) 60 mL of \[{{O}_{2}}\]

    C) 80 mL of \[C{{O}_{2}}\]

    D) 60 mL of\[C{{O}_{2}}\]

    View Answer play_arrow
  • question_answer74) Equivalent conductance of 0.0128 N acetic acid solution, at\[25{}^\circ C\]is 14 \[oh{{m}^{-1}}e{{q}^{-1}}\]and at infinite dilution is 391\[oh{{m}^{-1}}e{{q}^{-1}}\]. The degree of dissociation of acetic acid in the solution and its dissociation constant, respectively are

    A) 0.036 and \[1.66\times {{10}^{-5}}\]

    B) 0.121 and \[1.78\times {{10}^{-4}}\]

    C) 0.213 and \[1.84\times {{10}^{-5}}\]

    D) 0.054 and \[1.94\times {{10}^{-4}}\]

    View Answer play_arrow
  • question_answer75) Consider the following pairs of ions

    I. \[S{{c}^{3+}}\]and \[T{{i}^{4+}}\]
    II. \[M{{n}^{2+}}\]and \[F{{e}^{2+}}\]
    III. \[F{{e}^{2+}}\]and \[C{{o}^{3+}}\]
    IV. \[C{{u}^{+}}\]and \[Z{{n}^{2+}}\]
    Among these pairs of ions, isoelectronic pairs would include

    A) II, III and IV

    B) I, III and IV

    C) I, II and IV

    D) I, II and III

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  • question_answer76) A light greenish coloured salt was soluble in water. On passing \[{{H}_{2}}S\] into the solution a black precipitate was obtained which dissolved readily in \[HCl\]. The metal ion present is

    A) \[C{{o}^{2+}}\]

    B) \[F{{e}^{2+}}\]

    C) \[N{{i}^{2+}}\]

    D) \[M{{n}^{2+}}\]

    View Answer play_arrow
  • question_answer77) The E-isomer among the following is

    A)

    B)

    C)

    D)

    View Answer play_arrow
  • question_answer78) The decreasing nucleophilicity of the following is

    I. \[C{{H}_{3}}{{S}^{\text{O-}}}\]
    II. \[C{{H}_{3}}{{O}^{\text{O-}}}\]
    III. \[\overset{\text{O-}}{\mathop{O}}\,H\]
    IV. \[Et{{O}^{\text{O-}}}\]

    A) II>III>IV>I

    B) III>IV>I>II

    C) IV>III>I>II

    D) I>II>IV>III

    View Answer play_arrow
  • question_answer79) \[Ag|AgCl||C{{l}^{-}}({{C}_{2}})||C{{l}^{-}}({{C}_{1}})|AgCl|Ag\]for this cell\[\Delta G\]is negative if

    A) \[{{C}_{1}}={{C}_{2}}\]

    B) \[{{C}_{1}}>{{C}_{2}}\]

    C) \[{{C}_{2}}>{{C}_{1}}\]

    D) Both (a) and (b)

    View Answer play_arrow
  • question_answer80) Arrange the following in the decreasing order of their melting points.

    I. Heptane
    II. Octane
    III. Nonane
    IV. Decane

    A) IV>II>III>I

    B) IV>III>I>II

    C) I>II>IV>III

    D) II>III>I>IV

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  • question_answer81) In the given reaction, The products X and Y respectively are

    A) a-bromo nitrobenzene and o-bromoaniline

    B) p-bromo nitrobenzene and p-bromoaniline

    C) m-bromo nitrobenzene and m-bromoaniline

    D) o, p-dibromonitrobenzene and o, p-dibromoaniline

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  • question_answer82) Which one of the following reactions cannot be used for the reduction of

    A) HI and red phosphorus at\[200{}^\circ C\]

    B) Wolff-Kishner reduction

    C) Clemmensen reduction

    D) Wurtz reaction

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  • question_answer83) Buna-N synthetic rubber is a copolymer of

    A) \[{{H}_{2}}C=CH-CN\] and \[H  C=CH-CH=C{{H}_{2}}\]

    B) \[{{H}_{2}}C=CH-CN\] and \[{{H}_{2}}C=CH-C=C{{H}_{2}}\]

    C)  \[{{H}_{2}}C=CH-\underset{\begin{smallmatrix}  | \\  Cl \end{smallmatrix}}{\mathop{C}}\,=CH\] and \[{{H}_{2}}C=CH-CH=C{{H}_{2}}\]

    D) \[{{H}_{2}}C=CH-CH=C{{H}_{2}}\] and \[{{H}_{5}}{{C}_{6}}-CH=C{{H}_{2}}\]

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  • question_answer84) Arrange the following (I to IV) in the order of increasing masses

    I. 0.5 mole of 03
    II. 0.5 g atom of oxygen
    III. \[3.011\times {{10}^{23}}\]molecules of\[{{O}_{2}}\]
    IV. 5.6 L of\[C{{O}_{2}}\]at STP

    A) II<IV<III<I

    B) IV<III<I<II

    C) II<I<IV<III

    D) I<II<III<IV

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  • question_answer85) What is the role of bithional in toilet soaps?

    A) It controls the pH of the skin and do not harm it

    B) It reduces the odours produced by bacteria decomposition of organic matter,

    C) It helps in improving the colour of the skin

    D) It act like an antihistamine

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  • question_answer86) Photochemical oxidants, i.e. PAN or PBN are formed by

    A) action of nitrogen oxides on hydrocarbons in presence of sunlight

    B) action of\[C{{O}_{2}}\]on hydrocarbons in presence of sunlight

    C) action of hydrogen sulphide on hydrocarbon in presence of sunlight

    D) None of the above

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  • question_answer87) Freundlich adsorption isotherm gives a straight line on plotting

    A) \[\frac{x}{m}vs\,\rho \]

    B) \[\log \frac{x}{m}vs\,\rho \]

    C) \[\log \frac{x}{m}vs\,\log \rho \]

    D) \[\frac{x}{m}vs\frac{1}{\rho }\]

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  • question_answer88) A salt on reacting with dil.\[{{H}_{2}}S{{O}_{4}}\]gives a reddish brown gas. The salt is

    A) \[KN{{O}_{2}}\]

    B) \[ZnB{{r}_{2}}\]

    C) \[NaN{{O}_{3}}\]

    D) \[FeC{{l}_{2}}\]

    View Answer play_arrow
  • question_answer89) The total number of possible isomers of the complex compound\[|C{{u}^{II}}{{(N{{H}_{3}})}_{4}}||P{{t}^{II}}C{{l}_{4}}|\]is

    A) 3

    B) 6

    C) 5

    D) 4

    View Answer play_arrow
  • question_answer90) The solution of the complex\[[Cu{{(N{{H}_{3}})}_{4}}]S{{O}_{4}}\]in water

    A) will give the test of\[C{{u}^{2+}}\]ions

    B) will give the test of \[N{{H}_{3}}\]

    C) will give the test of\[SO_{4}^{2-}\]ions

    D) will not give the tests of any of the above species

    View Answer play_arrow
  • question_answer91) Which of the following reactions depicts the reducing action of\[{{H}_{2}}{{O}_{2}}\]?

    A) \[{{C}_{6}}{{H}_{6}}+{{H}_{2}}{{O}_{2}}\xrightarrow[{}]{{}}{{C}_{6}}{{H}_{5}}OH+{{H}_{2}}O\]

    B) \[2{{I}^{-}}+2{{H}^{+}}+{{H}_{2}}{{O}_{2}}\xrightarrow{{}}{{I}_{2}}+{{H}_{2}}O\]

    C) \[2MnO_{4}^{-}+6{{H}^{+}}+5{{H}_{2}}{{O}_{2}}\xrightarrow{{}}\]\[2M{{n}^{2+}}+5{{O}_{2}}+8{{H}_{2}}O\]

    D) \[PbS+4{{H}_{2}}{{O}_{2}}\xrightarrow[{}]{{}}PbS{{O}_{4}}+4{{H}_{2}}O\]

    View Answer play_arrow
  • question_answer92) The number of \[\sigma -\]bonds in\[{{P}_{4}}{{O}_{10}}\]is

    A) 6

    B) 16

    C) 20

    D) 7

    View Answer play_arrow
  • question_answer93) Which of the following statements is correct with respect to the property of elements with increase in atomic number in the carbon family (group 14)?

    A) Their metallic character decreases

    B) The stability of +2 oxidation state increases

    C) Their ionization energy increases

    D) Their atomic size decreases

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  • question_answer94) Aluminium vessels should not be washed with material containing washing soda since

    A) washing soda is expensive

    B) washing soda is easily decomposed

    C) washing soda reacts with Al to form insoluble aluminium oxide

    D) washing soda reacts with Al to form soluble aluminate

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  • question_answer95) Which of the following alkaline earth metal oxides shows a coordination number four?

    A) \[BeO\]

    B) \[MgO\]

    C) \[SrO\]

    D) \[CaO\]

    View Answer play_arrow
  • question_answer96) The order of Solubility of lithium halides in non-polar solvents follows the order

    A) \[Lil>LiBr>LiCl>LiF\]

    B) \[LiF>Lil>LiBr>LiCl\]

    C) \[LiCl>LiF>Lil>LiBr\]

    D) \[LiBr>LiCr>LiF>Lil\]

    View Answer play_arrow
  • question_answer97) Which of the following is used as a source of oxygen in space capsules, submarines and breathing masks?

    A) \[Li{{O}_{2}}\]

    B) \[N{{a}_{2}}{{O}_{2}}\]

    C) \[K{{O}_{2}}\]

    D) \[{{K}_{2}}{{O}_{2}}\]

    View Answer play_arrow
  • question_answer98) Cone.\[{{H}_{2}}S{{O}_{4}}\]displaces hydrogen chloride from chlorides because

    A) it is stronger acid

    B) sulphates are less soluble than chlorides

    C) sulphates are more soluble than chlorides

    D) \[HCl\] is a gas while\[{{H}_{2}}S{{O}_{4}}\] is a liquid

    View Answer play_arrow
  • question_answer99) Which of the following is not a cumulated diene?

    A) Hexa-2,3-diene

    B) Penta-1,3-diepe

    C) Hexa-1,2-diene

    D) Penta-2,3-diene

    View Answer play_arrow
  • question_answer100) Which one of the following represents d-block elements?

    A) \[[Rn]6{{d}^{2}},7{{s}^{2}}\]

    B) \[[Xe]4{{f}^{1}},5{{d}^{1}},6{{s}^{2}}\]

    C) \[[Xe]4{{f}^{14}},5{{d}^{1}},6{{s}^{2}}\]

    D) \[[Xe]5{{d}^{1}},6{{s}^{2}}\]

    View Answer play_arrow
  • question_answer101) Pd has exceptional outer electronic configuration as\[4{{d}^{10}},\text{ }55{}^\circ \]. It belongs to

    A) 4th period, group 11

    B) 4th period, group 10

    C) 6th period, group 9

    D) 3th period, group 16

    View Answer play_arrow
  • question_answer102) The rate of reaction,\[2NO+C{{l}_{2}}2NOCl\] becomes double when the concentration of\[C{{l}_{2}}\]is doubled. However, when the concentration of both the reactants is doubled the rate becomes eight times. What is order of the reaction?

    A) First

    B) Second

    C) Third

    D) Zero

    View Answer play_arrow
  • question_answer103) How will the rate of reaction,\[2NO+{{O}_{2}}\xrightarrow[{}]{{}}2N{{O}_{2}}\]change, if the volume of the reaction vessel is doubled?

    A) It will diminish to 1/4 of the initial value

    B) It will diminish to 1/8 of the initial value

    C) It will grow four times

    D) It will grow eight times

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  • question_answer104) One mole of\[Fe{{C}_{2}}{{O}_{4}}\]is oxidised by x moles of\[C{{r}_{2}}O_{7}^{2-}\]in acidic medium,\[x\]is

    A) 0.5

    B) 1.0

    C) 1.5

    D) 2.0

    View Answer play_arrow
  • question_answer105) The true statement regarding sucralose is

    A) trichloro derivative of sucrose

    B) it does not provide calories

    C) it is stable at cooking temperature

    D) All of the above

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  • question_answer106) Which one of the following conditions will increase the voltage of the cell represents by the equation? \[Cu(s)+2A{{g}^{+}}(aq)\xrightarrow[{}]{{}}C{{u}^{2+}}(aq)+Ag(s)\]

    A) Increase in the concentration of\[A{{g}^{+}}\]ions

    B) Increase in the concentration of\[C{{u}^{2+}}\]ions

    C) Increase in the dimensions of silver electrode

    D) Increase in the dimensions of copper electrode

    View Answer play_arrow
  • question_answer107) During the electrolysis of the aqueous solution of copper sulphate using R electrodes, the reaction taking place at the anode is

    A) \[C{{u}^{2+}}+2{{e}^{-}}\xrightarrow[{}]{{}}Cu\]

    B) \[Cu\xrightarrow[{}]{{}}C{{u}^{2+}}+2{{e}^{-}}\]

    C) \[2{{H}_{2}}O\xrightarrow[{}]{{}}4{{H}^{+}}+{{O}_{2}}+4{{e}^{-}}\]

    D) \[{{H}_{2}}O+{{e}^{-}}\xrightarrow[{}]{{}}O{{H}^{-}}+\frac{1}{2}{{H}_{2}}\]

    View Answer play_arrow
  • question_answer108) What is the product P?

    A)

    B)

    C)

    D) Both (a) and (b)

    View Answer play_arrow
  • question_answer109) If the positions of\[N{{a}^{+}}\]and\[C{{l}^{-}}\]are interchanged in\[NaCl,\], the crystal lattice with respect to\[N{{a}^{+}}\]and\[C{{l}^{-}}\]is

    A) bcc and fcc

    B) fcc and bcc

    C) Both fee

    D) Both bcc

    View Answer play_arrow
  • question_answer110) At a temperature, vapour pressure of pure benzene is 640 nun Hg. On dissolving 2.175 g of a non-volatile solid solute in 39.0 g benzene vapour pressure of the solution if found to be 600 mm Hg. The molecular mass of solute is.

    A) 65.25

    B) 54.94

    C) 63.55

    D) 87.62

    View Answer play_arrow
  • question_answer111) \[50\,c{{m}^{3}}\]ethylene glycol is dissolved in 50g water. Freezing point of solution is\[-34{}^\circ C\]Assuming ideal behaviour than density of ethylene glycol is (for water, \[{{K}_{f}}=1.86\,K\,kg\,mo{{l}^{-1}}\])

    A) \[1.273\text{ }g/c{{m}^{3}}\]

    B) \[2.173\text{ }g/c{{m}^{3}}\]

    C) \[1.133\text{ }g/c{{m}^{3}}\]

    D) \[2.612\text{ }g/c{{m}^{3}}\]

    View Answer play_arrow
  • question_answer112) For the same transition metal ion, the colour of its compounds will depend upon

    A) temperature of the reaction

    B) pressure of the reaction

    C) nature of ligands or Lewis bases attached to the meta ion

    D) concentration of the ligands

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  • question_answer113) 10 moles of ideal gas expand isothermally 60 and reversibly from a pressure of 10 atm to 1 atm at 300K. What is the largest mass which can lifted through a height of 100 meter?

    A) 48.75 kg

    B) 58.55 kg

    C) 75.64 kg

    D) 64.13 kg

    View Answer play_arrow
  • question_answer114) arsenic sulphide sol is prepared by passing \[{{H}_{2}}S\] through arsenic oxide solution. The charge developed on the particles is due to absorption of

    A) \[{{H}^{+}}\]

    B) \[{{S}^{2-}}\]

    C) \[O{{H}^{-}}\]

    D) \[{{O}^{2-}}\]

    View Answer play_arrow
  • question_answer115) The molar heat capacity at constant volume of gaseous mixture contained 2 moles of each of two ideal gases\[X(CLV,\text{ }m=\frac{3}{2}R)\]and\[Y({{C}_{V}},m=\frac{5}{2}R)\]

    A) 2R

    B) 3R

    C) 4R

    D) 8R

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  • question_answer116) A compound is soluble in cone.\[{{H}_{2}}S{{O}_{4}}\].It does not decolourise bromine in\[CC{{l}_{4}}\]but in oxidized by chromic anhydride in aqueous \[{{H}_{2}}S{{O}_{4}}\]whit 2s, turning orange solution to blue green, afterward opaque. The original solution contains

    A) a primary alcohol

    B) a secondary alcohol

    C) a tertiary alcohol

    D) an ether

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  • question_answer117) Liquid flow a higher to a lower level. Which of the following liquids can climb up the walls of the glass vessel in which it is placed?

    A) Mercury

    B) Liquid \[{{N}_{2}}\]

    C) Liquid He (II)

    D) Water

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  • question_answer118) For a chemical reaction, temperature is raised from\[25{}^\circ C\]to\[35{}^\circ C\]. The value of equilibrium constant,\[{{K}_{p}}\]is doubled-The heat of reaction\[(\Delta H)\]for the reaction will be

    A) 13.834 kcal

    B) 11.714 kcal

    C) 12.726 kcal

    D) 14.312 kcal

    View Answer play_arrow
  • question_answer119) 4.0 g molecular\[PC{{l}_{5}}\] were heated in a vessel of 6L volume. At equilibrium state, 50% of\[PC{{l}_{5}}\]is dissociated. The equilibrium constant tor the reaction is

    A) \[0.66\,mol\,{{L}^{-1}}\]

    B) \[0.33\,mol{{L}^{-1}}\]

    C) \[0.44\,mol\,{{L}^{-1}}\]

    D) \[0.88\,mol\,{{L}^{-1}}\]

    View Answer play_arrow
  • question_answer120) A greenish yellow gas reacts with alkali metal hydroxide to form a halate which can be used in fire works and safety matches. The gas and halate respectively are

    A) \[B{{r}_{2}},KBr{{O}_{3}}\]

    B) \[C{{l}_{2}},KCl{{O}_{3}}\]

    C) \[{{I}_{2}},NaI{{O}_{3}}\]

    D) \[C{{l}_{2}},NaCl{{O}_{3}}\]

    View Answer play_arrow
  • question_answer121) Which of the following pair of characters distinguish Gnetum from Cycas and Pinus?

    A) Absence of resin duct and leaf venation

    B) Presence of vessel elements and absence of archegonia

    C) Perianth and two integuments

    D) Embryo development and apical meristem

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  • question_answer122) Fruit ripening is promoted by the hormone that also

    A) promotes thinning of fruits in cherry and walnut

    B) induce parthenocarpy in tomato

    C) promote flowering in lemma

    D) induce dormancy

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  • question_answer123) A plant cell is placed in a solution whose solute concentration is twice as great as the concentration of the cell cytoplasm. The plasma membrance is selectively permeable, allowing water but not solutes to pass through. What will happen to the cell?

    A) The cell will swell because of endosmosis

    B) The cell will shrivel because of exosmosis

    C) The cell will shrivel because of active transport of water

    D) No change will occur because of hard impervious cell wall present

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  • question_answer124) Select the correct statements out of the four (I-IV) given below about lac operon.

    I. Glucose or galactose may bind with the represser and inactivate it.
    II. In the absence of lactose, the represser binds with the operator region.
    III. The Z-gene codes for permease.
    IV. This was elucidated by Francois Jacob and Jacques Monod.
    The correct statements are

    A) II and III

    B) I and III

    C) II and IV

    D) I and ll

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  • question_answer125) In Zostera, the marine angiosperm, the pollen grains are long ribbon-like and without exine. They have same specific gravity as that of water. How is this feature helpful in their pollination?

    A) The pollen grains become un wet table

    B) The pollen grains spread over large and they are lighter

    C) The pollen grains can float below the surface of water

    D) None of the above

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  • question_answer126) Match the following column I with column II.

    Column I (Genes) Column II (Types)
    A. Genes for glycolysis 1. Pseudogenes
    B. Genes for nitrate reductase 2. Multigenes
    C. Globin gene family 3. House keeping genes
    D. mRNA gene 4. Inducible genes
    Codes

    A) A-4 B-3 C-1 D-2

    B) A-3 B-4 C-2 D-1

    C) A-1 B-2 C-4 D-3

    D) A-2 B-1 C-3 D-4

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  • question_answer127) Statement I \[\alpha -\]ketoglutarate dehydrogenase catalyses the conversion of oxalosuccinic acid to \[\alpha -\]ketoglutarate. Statement II This reaction is accompanied with release of\[C{{O}_{2}}\]. Choose the correct option.

    A) Statement I is correct and statement II is incorrect

    B) Statement II is correct and statement I is incorrect

    C) Both statements correct

    D) Both statements incorrect

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  • question_answer128) As compared to sun plants, the plants, which are adopted to low light intensity possess

    A) more extended root system

    B) very high rate of\[C{{O}_{2}}\]fixation

    C) larger photosynthetic units

    D) more extended shoot system

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  • question_answer129) Consider the following statements about DNA replication.

    I. A replisome is the largest functional unit in DNA replication factories.
    II. RNA polymerase complexes are responsible for transcribing the newly synthesised RNAs into their mature form.
    III. DNA polymerases add new deoxyribonucleotides to the 3 end of a DNA strand.
    IV. A replication bubble is a region of single stranded DNA that arises due to unwinding of DNA in same direction by primase.
    Choose the incorrect statement(s).

    A) I and II

    B) III and IV

    C) I, II and IV

    D) I, II, Ill and IV

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  • question_answer130) The process in which mature differentiated cells reverse to meristematic activity to form callus is called

    A) dedifferentiation

    B) dedifferentiation

    C) cyto-differentiation

    D) differentiation

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  • question_answer131) Endothecium and tapetum are formed from

    A) primary sporogenous tissue

    B) primary parietal layer

    C) primary parietal layer and sporogenous tissue respectively

    D) sporogenous tissue and primary parietal layer respectively

    View Answer play_arrow
  • question_answer132) Which of the following is an example of a defence used by plants against herbivorous?

    I. Production of caffeine, tannin, quinine.
    II. More production of non-woody tissues.
    III. Production of hairs, thorns, spines.
    IV. Production of hormones like chemicals that interfere with insect metamorphosis.
    Select the correct codes.

    A) I and II

    B) II. III and IV

    C) I, II and III

    D) I, III and IV

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  • question_answer133) Match the following electron transport chain (ETC) inhibitors with their mode of action.

    Column-I Column-II
    A. Dinitrophenol (2.4-DNP) 1. Electron flow from cyt\[-{{a}_{3}}\]to\[{{O}_{2}}\]
    B. Cyanide 2. Direct electrons from Co-Q to\[{{O}_{2}}\]
    C. Antimycin-A 3. Electron flow from NADH/FADH a to Co-Q
    D. Rotenone 4. Electron flow from Cyt-b to Cyt-c
    Codes

    A) A-2 B-4 C-1 D-3

    B) A-2 B-1 C-4 D-3

    C) A-3 B-4 C-1 D-2

    D) A-4 B-3 C-2 D-1

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  • question_answer134) All given statements regarding cymose inflorescence are correct except

    A) main axis terminate in a flower

    B) development of flowers is basipetal

    C) opening of flowers is centrifugal

    D) unlimited growth of axis

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  • question_answer135) The leaves of some plants contain crystals of calcium carbonate in epidermal cells, giving appearance that of bunch of grapes are called

    A) cystoliths

    B) sphaeraphides

    C) raphides

    D) otoliths

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  • question_answer136) The name of this class is based on sexual structure as the site of karyogamy and meiosis in

    A) Phycomyctes and Actinomycetes

    B) Deuteromycetes and Zygomycetes

    C) Ascomycetes and Basidiomycetes

    D) Basidiomycetes and Actinomycetes

    View Answer play_arrow
  • question_answer137) Which of the following feature cannot be considered to distinguish underground stem from a root?

    A) Presence of nodes and internodes

    B) Presence of axillary and terminal buds

    C) Absence of scale leaves and adventitious roots arising from nodes

    D) Presence of exogenous branches

    View Answer play_arrow
  • question_answer138) Embryo rescue is resorted to

    A) obtain new generation of plants quickly

    B) to reduce chance of seedling growth

    C) ensure growth of interspecific hybrids

    D) induce somaclonal variations

    View Answer play_arrow
  • question_answer139) In sweet pea, C and P genes are essential for flower colour. In absence of either or both the genes, the flowers are white. What will be the percentage of coloured flowers in the off spring of cross\[Ccpp\times ccPp\]?

    A) 75%

    B) 25%

    C) 80%

    D) 50%

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  • question_answer140) Apomictic embryos in citrus arise from

    A) synergids

    B) maternal sporophytic tissue in ovule

    C) antipodal cell

    D) haploid cell

    View Answer play_arrow
  • question_answer141) The statement given below are the deficiency symptoms of a certain element. Identify the element with the help of options that follow.

    I. Stunted growth
    II. Degeneration of meristems
    III. Curling appear first in young leaves
    IV. Premature flower abscission
    Choose the correct option.

    A) magnesium

    B) boron

    C) calcium

    D) nitrogen

    View Answer play_arrow
  • question_answer142) In complete oxidation of glucose, ATP molecules are formed from ADP. Which among the following stage yields the maximum amount of ATP?

    A) Glycolsis

    B) Krebs cycle

    C) Electron transport chain

    D) Conversion of pyruvic acid to acetyl Co-A

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  • question_answer143) Red tide of sea is due to presence of

    A) Gonyaulax

    B) Cymbella

    C) chlamydae

    D) blue-green algae

    View Answer play_arrow
  • question_answer144) The binomial name in which names of genus and species are same is referred to as

    A) binomial nomenclature

    B) tautonym

    C) cladistics

    D) polytypic

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  • question_answer145) Read the following statements with respects to rate of transpiration.

    I. In dry atmosphere, the relative humidity is low so, the rate of transpiration increases.
    II. Slow breeze promotes the rate of transpiration.
    III. ABA promotes transpiration.
    IV. A high salt concentration in soil water increases transpiration.
    Choose the incorrect options.

    A) I and II

    B) II and III

    C) III and IV

    D) I and IV

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  • question_answer146) How many pigment molecules constitute a single photosystem?

    A) 2500

    B) 250-400

    C) 2000

    D) 2

    View Answer play_arrow
  • question_answer147) Following are the statements regarding sexual reproduction in flowering plants.

    I. Parthenium is a plant that causes pollen allergy.
    II. If tapetum is destroyed, then unfeasible male gametophytes are produced.
    III. Egg apparatus has 3 synergids and 2 antipodal cells.
    IV. Megaspore is the first cell of gametophytic generation.
    Choose the incorrect option.

    A) I and II

    B) I and III

    C) Ill and IV

    D) I and IV

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  • question_answer148) Which one of the following is a bacteria?

    A) Pseudomonas

    B) Clostridium

    C) Actinomycetes

    D) Azotobacter

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  • question_answer149) Choose the correct option depicting the floral formula of the diagram given below.

    A)

    B)

    C)

    D)

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  • question_answer150) If there is more than one tunica layer in stem apex, which among the following is most likely to happen?

    A) All the layers will develop into epidermal cells

    B) Only the outer layer will develop into epidermal cells

    C) All the layers will develop into cortex

    D) Inner layer develops into cortex

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  • question_answer151) Reproductive isolation mechanism prevent interbreeding of naturally sympatric population. Given below are categories of isolating mechanisms. Choose the correct name for isolation when potential mates occupy overlapping ranges but reproduce at different times of the year.

    A) Ecological isolation

    B) Behavioural isolation

    C) Temporal isolation

    D) Mechanical isolation

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  • question_answer152) A women with albinic father marries an albinic man. The proportion of her progeny is

    A) 2 normal: 1 albinic

    B) All normal

    C) All albinic

    D) 1 normal: 1 albinic

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  • question_answer153) Consider the following statements about basis of classification.

    I. Amphibians are classified on the basis of their habitat.
    II. Reptiles are classified on the basis of the nature of their skulls.
    III. Birds are classified on the basis of their bones.
    IV. Mammals are classified on the basis of their mode of reproduction.
    Choose the correct option.

    A) Only I

    B) I and II

    C) Only II

    D) II and IV

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  • question_answer154) Which of the following pairs is not correctly matched?

    A) Cholera - Vibrio choferae

    B) German measles - Rubella virus

    C) Whooping cough - Bordetella pertussis

    D) Jaundice - Pasteurelia pestis

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  • question_answer155) Which of the following is the correct sequence of development of erthrocytes?

    A) Erythrocytes\[\to \]Normoblasts\[\to \] Erythroblasts\[\to \]Reticulocytes

    B) Erythroblasts\[\to \]Normoblasts\[\to \]Reticulocytes\[\to \]Erythrocytes

    C) Erythroblasts\[\to \]Reticulocytes\[\to \]Erythrocytes\[\to \]Normoblasts

    D) Normoblasts\[\to \]Erythroblasts\[\to \]Erythrocytes\[\to \]Reticulocytes

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  • question_answer156) Which of the following characteristic is not seen in a person suffering from schizoprenia?

    A) Auditory hallucinations

    B) Split personality

    C) False beliefs

    D) Lack of motivation

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  • question_answer157) A feature of peroxisome in our body is

    A) they are associated with synthesis and storage of lipids

    B) they contain oxidising enzymes and promotes gluconeogenesis

    C) they contain oxygenase a detoxification enzyme

    D) They are not found in intact cells

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  • question_answer158) Menstrual cycle is the cyclic changes in the reproductive tract of primate females. Given below are some statements related with menstrual cycle.

    I. Oestrogen is the hormone active during proliferative phase.
    II. The uterine endometrium and glands grow further during secretory phase.
    III. At the end of proliferative phase, corpus luteum degenerates in the ovary.
    IV. The cycle ends with the menstrual phase, when menstrual flow occurs and lasts for 3-5 days.
    Choose the correct option.

    A) I, II and III

    B) II, Ill and IV

    C) I and II

    D) III and IV

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  • question_answer159) Elevated blood levels of certain enzymes suggest a related disease. Match the enzyme in column I with related disease in column II.

    Column I Column II
    A. Amylase 1. Liver disease
    B. Glutamate dehydrogenase 2. Myocardial infarction
    C. Alkaline phosphatase 3. Liver or bone disease
    D. Creatine kinase 4. Pancreatic disease
    Codes

    A) A-1 B-2 C-3 D-4

    B) A-4 B-3 C-2 D-1

    C) A-3 B-4 C-1 D-2

    D) A-4 B-1 C-3 D-2

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  • question_answer160) Utriculus of internal ear is

    A) lower chamber related with equilibrium

    B) lower chamber related with receiving sound waves

    C) upper chamber related with receiving sound waves

    D) upper chamber related with equilibrium

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  • question_answer161) Testicular Sperm Aspiration (TESA) technique involves

    A) collection of eggs

    B) insemination of donated sperm into womans uterus

    C) collection of sperms from the testis surgically

    D) collection of sperms from efferent ducts

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  • question_answer162) Darwin in the theory of natural selection states that

    A) characters acquired during the life of an individual are inherited by its off springs

    B) environment does not play any role in the evolution

    C) natural selection acts on favourable variations, which appear among individuals of a species

    D) heritable variations arises through changes in the gene complex of species

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  • question_answer163) The most appropriate definition of neuroglial cells are

    A) non-sensory and supporting cells

    B) secretory cells

    C) sensory and supporting cells

    D) non-sensory supporting or secretory cells

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  • question_answer164) Thousand of years old mummies are still in their condition as they were before due to some reason. Which of the following describe it the best?

    A) Due to non-destruction of yellow elastin fibre

    B) Due to non-destruction of white elastin fibre

    C) Due to non-destruction of collagen fibre

    D) Due to non-destruction of veins

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  • question_answer165) Statements I Buffer is a compound that destabilises the pH of solution by removing or releasing hydrogen ions. Statement II Human blood has a buffer solution. Its pH is maintained by\[HCO_{3}^{-},{{H}^{+}}\] ions and\[C{{O}_{2}}\]concentration. Choose the correct option.

    A) Statement I is correct but II is incorrect

    B) Statement II is correct but I is incorrect

    C) Both statement are correct

    D) Both statement are incorrect

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  • question_answer166) Which among the following statements is correct with respect to functional structure of glomerular membrane?

    I. The endothelium is perforated by small holes called fenestral.
    II. The basement membrane is present inside the endothelium and is composed of meshwork of collagen.
    III. The epithelium of visceral layer has cells, which are of peculiar shape and are called podocytes.
    IV. The shapes between pedicels are called slit pores through which glomerular filterate filters.
    Choose the correct option.

    A) I, II and III

    B) I, III and IV

    C) I, II and IV

    D) II, III and IV

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  • question_answer167) Which of the following is true for blood doping?

    A) It is same as blood profiling

    B) It is the transfer of blood from another person having same blood group

    C) It is transfer of once own blood to increase the haemoglobin content to carry out more oxygen

    D) It is doping of blood with ions and chemicals to purify it

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  • question_answer168) Man And Biosphere programme (MAB) was launched by UNESCO in 1971. Which of the following is not an objective of this programme?

    A) To provide opportunities for education and training

    B) To promote international cooperation

    C) To provide long term in situ conservation of genetic diversity

    D) To provide protection to wild animals fauna

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  • question_answer169) What would not take place if chromaffin cells of adrenal medulla undergoes oncogenesis?

    A) High blood sugar and glucosuria

    B) High BMP

    C) Pheochromocytomas

    D) Low blood pressure

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  • question_answer170) Match the following column I with column II.

    Column I Column II
    A. Adenoma 1. Cancer of muscular tissue
    B. Lipoma of skin 2. Cancer of pigmented epithelium
    C. Glioma 3. Cancer of glands
    D. Myoma 4. Cancer of glial cells of central nervous system
    E. Melanoma 5. Cancer of adipose tissue
    Codes

    A) A-1 B-2 C-3 D-5 E-4

    B) A-5 B-4 C-2 D-1 E-3

    C) A-4 B-5 C-1 D-2 E-3

    D) A-3 B-5 C-4 D-1 E-2

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  • question_answer171) Euryhaline species denotes an animal

    A) without osmoregulation

    B) which lives in saline water

    C) which has a wide range of saline tolerance

    D) which has a wide range of temperature tolerance

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  • question_answer172) One key function of nuclear pores is to

    A) aid in the production of new nuclei

    B) allow cells to communicate with each other

    C) form connections between different organelles

    D) allow molecules like protein to move in and out of the nucleus

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  • question_answer173) From the following pairs regarding the type of animal tissue with its location. Choose the incorrect ones.

    A) Pseudo stratified epithelium-.Eustachian tube

    B) Keratinized stratified epithelium-Conjunctiva of Gyes

    C) Squamous epithelium - Aiveoli of lungs

    D) Cuboidal epithelium - Pancreatic ducts

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  • question_answer174) Read the following statements.

    I. Ocean acts as the global sink for\[C{{O}_{2}}\].
    II. The atmospheric input of carbon from rainfall is greater.
    III. Carbon gas is exchanged between organisms and atmosphere during respiration.
    IV. Human activities are increasing\[C{{O}_{2}}\]concentration in the atmosphere.
    Choose the incorrect options.

    A) Only I

    B) II and IV

    C) Only II

    D) None of the above

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  • question_answer175) In biosystematics, the basis of classification is

    A) major morphological characters

    B) cytological characters

    C) evolutionary history considering various parameters from different fields of studies

    D) phenotypic relationships between species

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  • question_answer176) Match the disease in column I with their characteristic symptoms in column II caused in brain.

    Column I Column II
    A. Parkinsons disease 1. Refers to lack of muscle coordination Damage to cerebellum is a characteristic symptom.
    B. Dyslexia 2. Refers to the destruction of myelin sheath of neuron of CNS.
    C. Alaxia 3. It is characterised by tremors and progressive rigidity of limbs caused by degeneration of neurons.
    D. Multiple sclerosis 4. Involves an inability of an individual to comprehend the written language.
    Codes

    A) A-2 B-4 C-3 D-1

    B) A-3 B-2 C-1 D-4

    C) A-4 B-3 C-2 D-3

    D) A-3 B-4 C-1 D-2

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  • question_answer177) The most ancient member of the genus Homo belonged to which of the following species or sub-species?

    A) Fossilis

    B) Sapiens

    C) Erectus

    D) Habilis

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  • question_answer178) Read the following statements about dentition.

    I. Dentistry refers to the study of teeth.
    II. Endodontics is the prevention and correction of abnormally aligned teeth.
    III. Orthodontics is the treatment of abnormal conditions of tissues immediately surrounding the teeth.
    IV. Penodontics is the prevention, diagnosis and treatment of dental diseases.
    Choose the correct explanation.

    A) Only I

    B) I and II

    C) If and III

    D) I. II, III and IV

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  • question_answer179) Polysaccharides, polypeptides and polynucleotides have in common that they all

    A) contain amino acid

    B) are formed in condensation reactions

    C) contain nitrogen

    D) come out in acid soluble pool

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  • question_answer180) A food web is more realistic than food chain tor showing the feeding relationship in an ecosystem because

    A) it compares the number of consumers to the number of microorganisms in an ecosystem

    B) food chains use only a small sampling of organisms

    C) a food web explains why there are more producers than consumers

    D) producers are usually eaten by many different consumers and most consumers are eaten by more than one predator

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