Solved papers for Uttarakhand PMT Uttarakhand PMT Solved Paper-2006

done Uttarakhand PMT Solved Paper-2006

  • question_answer1) A simple pendulum of length \[l\] has a maximum angular displacement \[\text{ }\!\!\theta\!\!\text{ }\]. The maximum kinetic energy of the bob is :

    A) \[mgl\]\[(1-cos\theta )\]

    B) 0.5\[mgl\]

    C) \[mgl\]

    D) 0.5 \[mgl\]

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  • question_answer2) Radius of orbit of satellite of earth is R. Its kinetic energy is proportional to :

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

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

    C) \[R\]

    D) \[\frac{1}{{{R}^{3/2}}}\]

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  • question_answer3) The radius R of the soap bubble is doubled under isothermal condition. If T be the surface tension of soap bubble. The work done in doing so is given by :

    A) \[32{{\pi }^{2}}T\]

    B) \[24\pi {{R}^{2}}T\]

    C) \[8\pi {{R}^{2}}T\]

    D) \[4\pi {{R}^{2}}T\]

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  • question_answer4) A body of specific heat\[0.2\text{ }kcal/kg{}^\circ C\]is heated through 1000C. The percentage increase in its mass is :

    A) 9%

    B) \[9.3\times {{11}^{-11}}%\]

    C) 10%

    D) none of these

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  • question_answer5) Two similar coils are kept mutually perpendicular such that their centres coincide. At the centre, find the ratio of the magnetic field due to one coil and the resultant magnetic field through both coils, if the same current is flows:

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

    B) 1 : 2

    C) 1 : 2

    D) \[\sqrt{3}:1\]

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  • question_answer6) A prism of refractive index \[\sqrt{2}\] has a refracting angle of\[60{}^\circ \]. At what angle a ray must be incident on it, so that it suffers a minimum deviation :

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

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

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

    D) \[180{}^\circ \]

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  • question_answer7) A cone filled with water is revolved in a vertical circle of radius 4 m and the water does not fall down. What must be the maximum period of revolution?

    A) 2 s

    B) 4 s

    C) 1s

    D) 6 s

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  • question_answer8) A conducting sphere of radius R = 20 cm is given a charge \[Q\]= 16\[\mu \]C. What is \[\hat{E}\] at centre?

    A) \[3.6\times {{10}^{6}}\,N/C\]

    B) \[1.8\times {{10}^{6}}\,N/C\]

    C) Zero

    D) \[0.9\times {{10}^{6}}\,N/C\]

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  • question_answer9) Three circular concentric wires of radii a, \[2a\] and \[3a\] are carrying current \[3l,2l\] and \[l\] in same manner. The magnetic field at the common centre is:

    A) \[\frac{13{{\mu }_{0}}l}{6a}\]

    B) \[\frac{{{\mu }_{0}}l}{6a}\]

    C) \[\frac{{{\mu }_{0}}l}{a}\]

    D) none of these

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  • question_answer10) The maximum range of a gun on horizontal terrain is 16 km, if\[g=10\text{ }m/{{s}^{2}}\]. What must be the muzzle velocity of the shell?

    A) 200 m/s

    B) 100 m/s

    C) 400 m/s

    D) 300 m/s

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  • question_answer11) The length, breadth and thickness of a block are given by \[l\] = 12 cm, b = 6 cm and t = 2.45 cm. The volume of the block according to the idea of significant figures should be:

    A) \[1\times {{10}^{2}}c{{m}^{3}}\]

    B) \[2\times {{10}^{2}}c{{m}^{3}}\]

    C) \[1.763\times {{10}^{2}}c{{m}^{3}}\]

    D) none of these

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  • question_answer12) Five particles of mass 2 kg are attached to the rim of a circular disc of radius 0.1 m and negligible mass. Moment of inertia of the system about the axis passing through the centre of the disc and perpendicular to its plane is :

    A) \[1\text{ }kg\text{ }{{m}^{2}}\]

    B) \[0.1\text{ }kg\text{ }{{m}^{2}}\]

    C) \[2\text{ }kg\text{ }{{m}^{2}}\]

    D) \[0.2\text{ }kg\text{ }{{m}^{2}}\]

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  • question_answer13) The radius of the convex surface of plano-convex lens is 20 cm and the refractive index of the material of the lens is 1.5. The focal length is:

    A) 30 cm

    B) 50 cm

    C) 20 cm

    D) 40 cm

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  • question_answer14) An ice-cube of density\[900\text{ }kg/{{m}^{3}}\]is floating in water of density\[1000\text{ }kg/{{m}^{3}}\]. The percentage of Volume of ice-cube outside the water is:

    A) 20%

    B) 35%

    C) 10%

    D) 25%

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  • question_answer15) A sphere of diameter 0.2 m and mass 2 kg is rolling on an inclined plane with velocity\[v=0.5\]m/s. The kinetic energy of the sphere is :

    A) 0.1 J

    B) 0.3 J

    C) 0.5 J

    D) 0.42 J

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  • question_answer16) An electron moves at right angle to a magnetic field of\[5\times {{10}^{-2}}T\]with a speed of\[6\times {{10}^{7}}m/s\]. If the specific charge of the electron is\[1.7\times {{10}^{11}}\] C/kg. The radius of the circular path will be:

    A) 2.9 cm

    B) 3.9 cm

    C) 2.35 cm

    D) 2 cm

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  • question_answer17) If work function of a metal is 4.2eV, the cut off wavelength is:

    A) \[8000\overset{o}{\mathop{\text{A}}}\,\]

    B) \[7000\overset{o}{\mathop{\text{A}}}\,\]

    C) \[1472\overset{o}{\mathop{\text{A}}}\,\]

    D) \[2950\overset{o}{\mathop{\text{A}}}\,\]

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  • question_answer18) A particle is executing the motion\[x=a\,\cos (\omega t-\text{ }\!\!\theta\!\!\text{ }).\]\[\text{( }\!\!\omega\!\!\text{ t- }\!\!\theta\!\!\text{ )}\text{.}\]). The velocity of the particle is:

    A) \[a\omega \,\sin \text{ }\!\!\theta\!\!\text{ }\]

    B) \[a\omega \,\]

    C) \[a\omega \,\,\sin \text{ }\!\!\theta\!\!\text{ }\]

    D) none of these

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  • question_answer19) A particle is executing two different simple harmonic motions, mutually perpendicular, of different amplitudes and having phas difference of \[\frac{\pi }{2}.\]The path of the particle will be:

    A) circular

    B) straight line

    C) paraboilic

    D) elliptical

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  • question_answer20) Equations of motion in the same direction are given by: \[{{y}_{1}}=2a\sin (\omega t-kx)\] \[{{y}_{2}}=2a\sin (\omega t-kx-\text{ }\!\!\theta\!\!\text{ })\] The amplitude of the medium particle will be:

    A) \[2a\sin \text{ }\!\!\theta\!\!\text{ }\]

    B) \[\sqrt{2}a\sin \text{ }\!\!\theta\!\!\text{ }\]

    C) \[4a\sin \frac{\text{ }\!\!\theta\!\!\text{ }}{2}\]

    D) \[\sqrt{2}a\sin \frac{\text{ }\!\!\theta\!\!\text{ }}{2}\]

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  • question_answer21) The work function of sodium is 2.3 eV. The threshold wavelength of sodium will be:

    A) \[2900\overset{o}{\mathop{\text{A}}}\,\]

    B) \[2500\overset{o}{\mathop{\text{A}}}\,\]

    C) \[5380\overset{o}{\mathop{\text{A}}}\,\]

    D) \[1200\overset{o}{\mathop{\text{A}}}\,\]

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  • question_answer22) The potential difference between points A and B is :

    A) \[\frac{20}{7}V\]

    B) \[\frac{40}{7}V\]

    C) \[\frac{10}{7}V\]

    D) zero

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  • question_answer23) The velocity of light emitted by a source S observed by an observer at rest w.r.t S is c. If he observer moves with a speed v towards S, then velocity of light as observed by the observer will be:

    A) c

    B) \[\sqrt{1-{{v}^{4}}{{c}^{2}}}\]

    C) \[c+v\]

    D) c - v

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  • question_answer24) A closed argon pipe and an open argon pipe are tuned to the same fundamental frequency. What is the ratio of their lengths?

    A) 1 : 2

    B) 2 : 1

    C) 2 : 3

    D) 4 : 3

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  • question_answer25) When a certain current is passed in the circuit as shown in figure, 10 kcal of heat is produced in 5\[\Omega \] resistance. How much heat is produced in \[\Omega \] resistance?

    A) 4 kcal

    B) 2 kcal

    C) 5 kcal

    D) 3 kcal

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  • question_answer26) A steel scale measures the length of a copper wire as 80.0 cm, when both are at\[20{}^\circ C,\] the calibration temperature for the scale. What would the scale read for the length of the rod when both are at\[40{}^\circ C\]? Given: a for steel \[=11\times {{10}^{-6}}per{}^\circ C\] and \[a\] for \[Cu=17\times {{10}^{-6}}per{}^\circ C\]

    A) 80.0096 cm

    B) 80.0272 cm

    C) 1 cm

    D) 25.2 cm

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  • question_answer27) A tank is filled with water upto height H. When hole is made at a distance h below the level of water. What will be the horizontal range of water jet?

    A) \[2\sqrt{h(H-h)}\]

    B) \[4\sqrt{h(H+h)}\]

    C) \[4\sqrt{h(H+h)}\]

    D) \[2\sqrt{h(H+h)}\]

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  • question_answer28) A raft of wood of mass 120 kg floats in water. The weight that can be put on the raft to make it just sink, should be \[{{d}_{raft}}=600kg/{{m}^{3}}\]:

    A) 80 kg

    B) 50 kg

    C) 60 kg

    D) 30 kg

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  • question_answer29) A particle is kept at rest at the top of a sphere of diameter 42 m. When disturbed slightly, it slides down. At what height h from the bottom, the particle will leave the sphere?

    A) 14 m

    B) 28 m

    C) 35 m

    D) 7 m

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  • question_answer30) If an insulated non-conducting sphere of radius R has charge density p. The electric field at a distance r from the centre of sphere (r > R) will

    A) \[\frac{\rho R}{3{{\varepsilon }_{0}}}\]

    B) \[\frac{\rho r}{{{\varepsilon }_{0}}}\]

    C) \[\frac{\rho r}{3{{\varepsilon }_{0}}}\]

    D) \[\frac{3\rho R}{{{\varepsilon }_{0}}}\]

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  • question_answer31) The minimum wavelength of X-ray emitted by X-ray tube is\[0.4125\overset{o}{\mathop{\text{A}}}\,\]. The accelerating voltage is:

    A) 30 kV

    B) 50 kV

    C) 80 kV

    D) 60 kV

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  • question_answer32) A monoatomic gas supplied the heat \[Q\] very slowly keeping the pressure constant. The work done by the gas will be :

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

    B) \[\frac{3}{5}Q\]

    C) \[\frac{2}{5}Q\]

    D) \[\frac{1}{5}Q\]

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  • question_answer33) A thin lens has focal length \[f\] and its aperture has diameter d. It forms an image of intensity \[l\]. Now the central part of the aperture upto diameter \[d/\] 2 is blocked up by an opaque paper. The focal length and the image intensity will change to :

    A) \[\frac{f}{2}and\frac{I}{2}\]

    B) \[f\,and\frac{I}{4}\]

    C) \[\frac{3f}{4}\,and\frac{I}{2}\]

    D) \[f\,and\frac{3I}{4}\]

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  • question_answer34) The temperature of the black body increases from T to 2T. The factor by which the rate of emission will increase, is?

    A) 4

    B) 2

    C) 16

    D) 8

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  • question_answer35) A police jeep is chasing with velocity of 45 km/h a thief in a nother jeep moving with velocity 153 km/h. Police fires a bullet with muzzle velocity of 180 m/s. The velocity it will-strike the car of the thief is :

    A) 150 m/s

    B) 27 m/s

    C) 450 m/s

    D) 250 m/s

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  • question_answer36) What should be the minimum value of refractive index of the material of the prism for the reflections to take place as shown in the figure :

    A) 1.7

    B) 1.4

    C) 1.2

    D) 2.7

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  • question_answer37) An \[LC\] circuit is in the state of resonance. If C = 0.1 \[\mu F\]and L = 0.25 H. Neglecting ohmic resistance of circuit. What is the frequency of oscillations?

    A) 1007 Hz

    B) 100 Hz

    C) 109 Hz

    D) 500 Hz

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  • question_answer38) A person who can see things most clearly at a distance of 10 cm, requires spectacles to enable to see clearly things at a distance of 30 cm. What should be the focal length of the spectacles?

    A) 15 cm (Concave)

    B) 15 cm (Convex)

    C) 10 cm

    D) Zero

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  • question_answer39) The dimensional formula for Youngs modulus is:

    A) \[[M{{L}^{-1}}{{T}^{-2}}]\]

    B) \[[{{M}^{0}}L{{T}^{-2}}]\]

    C) \[[ML{{T}^{-2}}]\]

    D) \[[M{{L}^{2}}{{T}^{-2}}]\]

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  • question_answer40) When temperature of an ideal gas is increased from\[27{}^\circ C\]to\[227{}^\circ C,\] its rms speed is changed from 400 m/s to \[{{v}_{s}}\] The \[{{v}_{s}}\] is :

    A) 516 m/s

    B) 450 m/s

    C) 310 m/s

    D) 746 m/s

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  • question_answer41) Graphite is soft while diamond is hard because:

    A) graphite is in powder form

    B) diamond has\[s{{p}^{2}}\]hybridization but graphite has\[s{{p}^{3}}\]hybridization

    C) graphite is in planar form while diamond is in tetrahedral form

    D) graphite is covalent and diamond is ionic

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  • question_answer42) The pH of a\[{{10}^{-10}}M\,NaOH\]solution is:

    A) 10

    B) 7.01

    C) 6.99

    D) 4

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  • question_answer43) \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}+{{I}_{2}}\xrightarrow[{}]{{}}\]Product is:

    A) \[N{{a}_{2}}S\]

    B) \[N{{a}_{2}}S{{O}_{4}}\]

    C) \[N{{a}_{2}}{{S}_{4}}{{O}_{6}}\]

    D) \[{{S}_{2}}\]

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  • question_answer44) Phenol and benzoic acid are distinguished by:

    A) \[NaOH\]

    B) \[NaHC{{O}_{3}}\]

    C) \[N{{a}_{2}}C{{O}_{3}}\]

    D) \[{{H}_{2}}S{{O}_{4}}\]

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  • question_answer45) \[{{H}_{2}}O\]is liquid while\[{{H}_{2}}S\]is a gas due to:

    A) covalent bonding

    B) molecular attraction

    C) H-bonding

    D) both H-bonding and molecular attraction

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  • question_answer46) Phenol reacts with chloroform in presence of:

    A) \[{{H}_{2}}S{{O}_{4}}\]

    B) \[KOH\]

    C) \[NaN{{O}_{2}}/HCl\]

    D) Grignard reagent

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  • question_answer47) Frenkel and Schottky defects are:

    A) nucleus defects

    B) non-crystal defects

    C) crystal defects

    D) nuclear defects

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  • question_answer48) \[C{{H}_{3}}C{{H}_{2}}C\equiv CH\xrightarrow[{}]{R}\]butanone-2. R is:

    A) \[H{{g}^{2+}}/dil.{{H}_{2}}S{{O}_{4}}\]

    B) \[KMn{{O}_{4}}\]

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

    D) \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]

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  • question_answer49) Which has minimum solubility?

    A) \[B{{i}_{2}}{{S}_{3}}\]

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

    C) \[CoS\]

    D) \[PbS\]

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  • question_answer50) Ratio of molecular weights of A and B is\[\frac{4}{25},\]then ratio of rates of diffusion will be:

    A) \[5:1\]

    B) \[5:2\]

    C) \[25:3\]

    D) \[25:4\]

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  • question_answer51) H-bond is strongest in:

    A) \[{{C}_{2}}{{H}_{5}}OH\]

    B) \[H-F\]

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

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

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  • question_answer52) Strongest nucleophile is:

    A) \[RN{{H}_{2}}\]L

    B) ROH

    C) \[{{C}_{6}}{{H}_{5}}{{O}^{-}}\]

    D) \[R{{H}_{3}}{{O}^{-}}\]

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  • question_answer53) \[a/{{V}^{2}}\]given in van der Waals, equation is for:

    A) internal pressure

    B) intermolecular attraction

    C) both [a] and [b]

    D) temperature correction

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  • question_answer54) The hardest substance is:

    A) iron

    B) steel

    C) diamond

    D) graphite

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  • question_answer55) Which of the following is wrong statement?

    A) \[Ni{{(CO)}_{4}}\]has oxidation number +4 for \[Ni\]

    B) \[Ni{{(CO)}_{4}}\]has zero oxidation number for\[Ni\]

    C) \[Ni\]is metal

    D) CO is gas

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  • question_answer56) Hybridization of 1 and 2 carbon atom in\[C{{H}_{2}}=C=C{{H}_{2}}\]are:

    A) \[sp,\text{ }sp\]

    B) \[s{{p}^{2}},\text{ }s{{p}^{2}}\]

    C) \[s{{p}^{2}},\text{ }sp\]

    D) \[s{{p}^{3}},\text{ }s{{p}^{2}}\]

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  • question_answer57) In\[{{[NiC{{l}_{4}}]}^{2-}},\]the number of unpaired electrons, are:

    A) 4

    B) 2

    C) 3

    D) 5

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  • question_answer58) Which carbocation is most stable?

    A) \[C{{H}_{3}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]

    B) \[\overset{+}{\mathop{C}}\,{{H}_{3}}\]

    C) \[{{C}_{6}}{{H}_{5}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]

    D) \[C{{H}_{3}}C{{H}_{2}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]

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  • question_answer59) \[C{{H}_{3}}\overset{\begin{smallmatrix} C{{H}_{2}}C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,=\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C{{H}_{3}}}}\,\xrightarrow[{{H}_{2}}]{catalyst}X,\] Number of optical isomer possible will be:

    A) 2

    B) 4

    C) 0

    D) 3

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  • question_answer60) \[C(dia)+{{O}_{2}}\xrightarrow[{}]{{}}C{{O}_{2}};\]\[\Delta H=-395.4\text{ }kJ/mol\] \[C(gr)+{{O}_{2}}\xrightarrow[{}]{{}}C{{O}_{2}}\] \[\Delta H=-393.5\text{ }kJ/mol\] \[C(gr)\xrightarrow[{}]{{}}C(dia);\Delta H=?:\]

    A) \[-3.8\]

    B) \[-1.9\]

    C) \[+3.8\]

    D) \[+1.9\]

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  • question_answer61) The internal energy of a substance:

    A) decrease with increase in temperature

    B) increase with increase in temperature

    C) remains unaffected with change in temperature

    D) calculated by \[E=m{{c}^{2}}\]

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  • question_answer62) The rate constant of a reaction depends on:

    A) the temperature of a reaction

    B) the time of a reaction

    C) the extent of reaction

    D) the initial concentration of the reactant

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  • question_answer63) The half life of a radioactive element is 40 days. Calculate the average life.

    A) 5.76 days

    B) 57.6 days

    C) 646 days

    D) 4.56 days

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  • question_answer64) In an isothermal process:

    A) \[\Delta H=\Delta E+P\Delta V\]

    B) \[\Delta H=W\]

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

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

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  • question_answer65) Number of orbitals in L energy level:

    A) 1

    B) 2

    C) 3

    D) 4

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  • question_answer66) How much chlorine will be liberated on passing one ampere current for 30 minute through\[NaCl\]solution?

    A) 0.66 mole

    B) 0.33 mole

    C) 0.66g

    D) 0.33g

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  • question_answer67) \[{{H}_{2}}{{C}_{2}}{{O}_{4}}+KMn{{O}_{4}}\]in acidic medium reacts to have change in oxidation number of Mn from:

    A) 7 to 5

    B) 2 to 7

    C) 5 to 7

    D) 7 to 2

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  • question_answer68) When the temperature of an ideal gas is increased from\[27{}^\circ C\]to\[927{}^\circ C,\]the kinetic energy will be:

    A) same

    B) eight times

    C) four times

    D) twice

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  • question_answer69) Ratio of radii of second and first Bohr orbits of H atom is:

    A) 2

    B) 4

    C) 3

    D) 5

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  • question_answer70) India conducted an underground nuclear test at:

    A) Narora

    B) Tarapur

    C) Pushkar

    D) Pokharan

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  • question_answer71) Which is used as medicine?

    A) PVC

    B) Terylene

    C) Glyptal

    D) Urotropine

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  • question_answer72) \[NaOH/{{H}^{+}}\]reacts with:

    A) \[{{C}_{6}}{{H}_{5}}OC{{H}_{3}}\]

    B) \[C{{H}_{3}}OH\]

    C) \[C{{H}_{3}}\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,C{{H}_{3}}\]

    D) \[{{C}_{2}}{{H}_{5}}OH\]

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  • question_answer73) Butyne-land butyne-2 can be distinguished by

    A) \[{{H}_{2}}S{{O}_{4}}\]

    B) \[AgN{{O}_{3}}+N{{H}_{4}}OH\]

    C) \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]

    D) \[N{{H}_{4}}OH\]

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  • question_answer74) The incorrect configuration is:

    A) \[K=[Ar]\text{ }4{{s}^{1}}\]

    B) \[Cr=[Ar]\text{ }3{{d}^{5}},4{{s}^{1}}\]

    C) \[Cr=[Ar]\text{ }3{{d}^{4}},\text{ }4{{s}^{2}}\]

    D) \[Cu=[Ar]\text{ }3{{d}^{10}},4{{s}^{1}}\]

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  • question_answer75) Which of the following compound gives iodoform test?

    A) \[C{{H}_{3}}CN\]

    B) \[C{{H}_{3}}OH\]

    C) \[C{{H}_{3}}COC{{H}_{3}}\]

    D) \[{{C}_{6}}{{H}_{5}}OH\]

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  • question_answer76) Dual nature of particle was given by:

    A) Bohr theory

    B) Thomson model

    C) Heisenberg principle

    D) de-Broglie equation

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  • question_answer77) \[NaOH(aq),\text{ }HCl(aq),\]and\[NaCl(aq)\]concentration of each is \[{{10}^{-3}}M\]. Their pH will be respectively:

    A) 10, 6, 2

    B) 11, 3, 7

    C) 10, 3, 7

    D) 10, 4, 7

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  • question_answer78) Most acidic is:

    A) \[C{{H}_{3}}COOH\]

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

    C) \[HCOOH\]

    D) \[C{{H}_{3}}C{{H}_{2}}COOH\]

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  • question_answer79) Substance having ester linkage is:

    A) bakelite

    B) polythene

    C) PVC

    D) terylene

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  • question_answer80) Carborandum is:

    A) \[A{{l}_{2}}{{O}_{3}}\]

    B) \[AlC{{l}_{3}}\]

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

    D) \[SiC\]

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  • question_answer81) Which one of the following is the most polar bond?

    A) \[N-F\]

    B) \[N-N\]

    C) \[N-Cl\]

    D) \[O-F\]

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  • question_answer82) Which one of the following molecules does not exist?

    A) \[H{{e}_{2}}\]

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

    C) \[{{H}_{2}}\]

    D) \[{{F}_{2}}\]

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  • question_answer83) 1 mole. of cone. HCl requires x moles of dil. \[NaOH\]for neutralisation and 1 mole of cone. \[{{H}_{2}}S{{O}_{4}}\]requires y moles of small dil.\[HCl\]. Then which of the following equation is true?

    A) \[y=\frac{1}{2}x\]

    B) \[x=\frac{1}{2}y\]

    C) \[x=2y\]

    D) None of these

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  • question_answer84) An ideal gas expands in volume from \[1\times {{10}^{-3}}{{m}^{3}}\]to\[1\times {{10}^{-2}}{{m}^{3}}\]at 300 K against a constant pressure of\[1\times {{10}^{5}}N{{m}^{-2}}\]. The work done is:

    A) \[-900J\]

    B) \[-900kJ\]

    C) \[270\text{ }kJ\]

    D) \[900\text{ }kJ\]

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  • question_answer85) When IF of electricity is passed through acidulated water,\[{{O}_{2}}\]evolved is:

    A) \[11.2\text{ }d{{m}^{3}}\]

    B) \[5.6\text{ }d{{m}^{3}}\]

    C) \[22.4\text{ }d{{m}^{3}}\]

    D) \[1.0\text{ }d{{m}^{3}}\]

    View Answer play_arrow
  • question_answer86) Freundlich adsorption isotherm is:

    A) \[\frac{x}{m}=k{{p}^{1/n}}\]

    B) \[x=mk{{p}^{1/n}}\]

    C) \[\frac{x}{m}=k{{p}^{-n}}\]

    D) all of these

    View Answer play_arrow
  • question_answer87) Conjugate base of\[HS{{O}_{4}}\]is:

    A) \[SO_{4}^{2-}\]

    B) \[{{H}_{2}}S{{O}_{4}}\]

    C) \[{{H}_{3}}SO_{4}^{+}\]

    D) none of these

    View Answer play_arrow
  • question_answer88) pH of\[1\times {{10}^{-8}}M\text{ }HN{{O}_{3}}\]solution will be:

    A) 6

    B) 6.9586

    C) 7.9586

    D) 8

    View Answer play_arrow
  • question_answer89) The moderator used in nuclear reactor is:

    A) TEL

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

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

    D) \[R-O-P\]

    View Answer play_arrow
  • question_answer90) Which of the following is used in the treatment of blood cancer?

    A) \[{{I}^{131}}\]

    B) \[{{P}^{32}}\]

    C) \[R{{a}^{226}}\]

    D) \[{{I}^{127}}\]

    View Answer play_arrow
  • question_answer91) Formula of felspar is:

    A) \[{{K}_{2}}O.A{{l}_{2}}{{O}_{3}}.6Si{{O}_{2}}\]

    B) \[{{K}_{2}}{{O}_{3}}.A{{l}_{2}}{{O}_{3}}.6S{{i}_{2}}{{O}_{2}}.2{{H}_{2}}O\]

    C) \[A{{l}_{2}}{{O}_{3}}.2Si{{O}_{2}}.2{{H}_{2}}O\]

    D) \[3MgO.4Si{{O}_{2}}.{{H}_{2}}O\]

    View Answer play_arrow
  • question_answer92) \[A{{l}_{2}}{{O}_{3}}\]can be reduced by:

    A) Mg

    B) \[Si\]

    C) S

    D) \[Cl\]

    View Answer play_arrow
  • question_answer93) Best method of preparing alkyl chloride is:

    A) \[ROH+SOC{{l}_{2}}\xrightarrow[{}]{{}}\]

    B) \[ROH+PC{{l}_{5}}\xrightarrow[{}]{{}}\]

    C) \[ROH+PC{{l}_{3}}\xrightarrow[{}]{{}}\]

    D) \[ROH+HCl\xrightarrow[{}]{anhy.\,ZnC{{l}_{2}}}\]

    View Answer play_arrow
  • question_answer94) Chloropicrin is used as:

    A) solvent

    B) anaesthetic

    C) perfume

    D) tear gas

    View Answer play_arrow
  • question_answer95) Propyl amine on treatment with nitrous acid gives:

    A) ethanol

    B) isopropyi alcohol

    C) propanol

    D) propanol

    View Answer play_arrow
  • question_answer96) On strongly heating ammonium acetate gives:

    A) acetamide

    B) methyl cyanide

    C) urea

    D) formamide

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  • question_answer97) The main structural feature of proteins is:

    A) ester linkage

    B) ether linkage

    C) peptide linkage

    D) all of these

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  • question_answer98) Among the following a natural polymer is:

    A) cellulose

    B) PVC

    C) teflon

    D) polyethylene

    View Answer play_arrow
  • question_answer99) Glucose shows reducing nature because it has a:

    A) aldehydic group

    B) ketone group

    C) hydroxyl group

    D) \[-N{{H}_{2}}\]group

    View Answer play_arrow
  • question_answer100) In the following reaction, X is: \[X\xrightarrow[{}]{bromination}Y\xrightarrow[+HCl]{NaN{{O}_{2}}}\] \[Z\xrightarrow[{{C}_{2}}{{H}_{5}}OH]{Boiling}Tribromo\text{ }benzene\]

    A) benzoic acid

    B) salicylic acid

    C) phenol

    D) aniline

    View Answer play_arrow
  • question_answer101) In uremia, artificial kidney is used for removing accumulated waste products like urea by the process, called :

    A) maturation

    B) ureotelism

    C) reverse dialysis

    D) haemodialysis

    View Answer play_arrow
  • question_answer102) Mesophyll is differentiated into palisade and spongy parenchyma is adaptation to :

    A) light intensity

    B) reduced tanspiration

    C) low water availability

    D) atmospheric humidity

    View Answer play_arrow
  • question_answer103) Bulliform cells that help in the following down of lamina in drought, are present in epidermis of :

    A) monocotyledonous grass leaf

    B) dicotyledonous leaf

    C) both [a] and [b]

    D) none of the above

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  • question_answer104) Which of the following apparatus is commonly used to measure the rate of transpiration is ?

    A) Porometer

    B) Altimeter

    C) Potometer

    D) Luxmeter

    View Answer play_arrow
  • question_answer105) Which one of the following contains copper besides iron?

    A) Cytochrome-\[f\]

    B) Cytochrome oxidase

    C) Cytochrome-\[{{b}_{2}}\]

    D) Cytochrome-\[{{c}_{1}}\]

    View Answer play_arrow
  • question_answer106) Genetically dwarf plant can be converted into a plant of normal height with the application of:

    A) ethylene

    B) gibberellins

    C) cytokinins

    D) auxin

    View Answer play_arrow
  • question_answer107) A structure known as peroxisomes is associated with :

    A) photosynthesis

    B) respiration

    C) photorespiration

    D) photo phosphorylation

    View Answer play_arrow
  • question_answer108) A phytohormone involved in the de novo synthesis of a-amylase in germinating seeds is:

    A) auxin

    B) gibberellin

    C) ethylene

    D) cytokinin

    View Answer play_arrow
  • question_answer109) Which of the following element is most mobile in plant metabolism ?

    A) Calcium

    B) Phosphorus

    C) Carbon

    D) Magnesium

    View Answer play_arrow
  • question_answer110) For amino-transferases the essential coenzyme is :

    A) Co-A

    B) Pyridoxyl phosphate

    C) DPN

    D) NAD

    View Answer play_arrow
  • question_answer111) The process of converting ammonid to nitrate by bacteria is known as :

    A) ammonification

    B) nitrification

    C) nitrogen fixation

    D) denitrification

    View Answer play_arrow
  • question_answer112) In the mesophyll cells of CAM plants, \[C{{O}_{2}}\] fixation during day occur through :

    A) RuBP-oxygenase

    B) PEP-carboxylase

    C) RuBP-carboxylase

    D) Both RuBP carboxylase and PEP-carboxylase

    View Answer play_arrow
  • question_answer113) Various changes in mammalian sperm which prepare it to fertilise the ovum is called :

    A) capacitation

    B) regeneration

    C) growth

    D) none of these

    View Answer play_arrow
  • question_answer114) Sometimes a gene masks the expression of another gene at a different locus. This phenomenon is known as :

    A) codominance

    B) epistasis

    C) incomplete dominance

    D) none of the above

    View Answer play_arrow
  • question_answer115) In the F, generation of any attempted cross when neither the gene for red nor white is dominant or recessive. In this case, both the genes express them-selfes partially the phenomenon is known as :

    A) pseudo dominance

    B) dominance

    C) codominance

    D) incomplete dominance

    View Answer play_arrow
  • question_answer116) In order to explain the mode of inheritance of character through successive generations Mendel proposed that the two alternative factors for each character become separated during the formation of gametes and each factors has an equal chance of being transferred the off springs. This phenomenon is known as :

    A) principle of independent assortment

    B) principle of segregation

    C) principle of incomplete dominance

    D) none of the above

    View Answer play_arrow
  • question_answer117) The diagrammetic representation of a chromosome is known as :

    A) idiotype

    B) karyotype

    C) homodyne

    D) holotype

    View Answer play_arrow
  • question_answer118) Thread like structure that are composed of the nuclear DNA of eukaryotic cells and are the carrier of genetic information. These structure were known as chromosomes. The term chromosomes was given by :

    A) Waldeyer

    B) Balbiani

    C) Purkinje

    D) Sutton

    View Answer play_arrow
  • question_answer119) A trihybrid cross involve three pair of characters which will give rise to the \[{{\text{F}}_{\text{1}}}\]hybrids which are heterozygous for three genes. How many types of gametes will be produced in both male and female ?

    A) 2

    B) 4

    C) 6

    D) 8

    View Answer play_arrow
  • question_answer120) A functional complex comprising a cluster of genes including structural gene, a promoter gene, an operator region and a regulatory gene was discovered by :

    A) Beadle and Tatum (1958)

    B) Watson and Crick (1953)

    C) Tacob and Monad (1961)

    D) Britten and Davidson (1969)

    View Answer play_arrow
  • question_answer121) Which one of the following traits studied by Mendel in garden pea was a recessive character?

    A) Axial flower position

    B) Green seed colour

    C) Green pod colour

    D) Pound seed colour

    View Answer play_arrow
  • question_answer122) When an \[{{\text{F}}_{\text{1}}}\] individuals is crossed with its either of the two parent. Then it is known as :

    A) test cross

    B) back cross

    C) reciprocal cross

    D) monohybrid cross

    View Answer play_arrow
  • question_answer123) Which one of the following species yield edible oil and fibre ?

    A) Cocos nucifera

    B) Brassica compestris

    C) Mangifera indica

    D) Arachis hypogea

    View Answer play_arrow
  • question_answer124) Botanical name of arhu is :

    A) Prunus amygdalus

    B) Prunus armeniaca

    C) Prunus persica

    D) Prunus avium

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  • question_answer125) Out of following given cereals which is a pseudocereals ?

    A) Sorghum

    B) Millets

    C) Buckwheat

    D) None of these

    View Answer play_arrow
  • question_answer126) State which of the following statement is not associated with the use of ginger ?

    A) Used as condiment

    B) Used in digestive disorder

    C) Suitable for making starch

    D) Distilled oil is used in perfurmery

    View Answer play_arrow
  • question_answer127) Telocentric chromosomes differ from acrocentric chromosomes in having :

    A) terminal centromere as compared to subterminal centromere in the latter

    B) terminal centromere as compared to medianly located centromere in acrocentric

    C) subterminal centromere as compared to medianly located centromere in acrocentric

    D) subterminal centromere as compared to submedian centromere of acrocentric one

    View Answer play_arrow
  • question_answer128) Chromosomes present in prolonged prophase in the salivary glands of Drosophila are :

    A) polytene

    B) B-chromosomes

    C) Lampbrush

    D) supernumerary chromosomes

    View Answer play_arrow
  • question_answer129) Chromosomes at anaphases are of various shapes due to position of centromere. It is J-shaped when centromere is at :

    A) middle

    B) subterminal

    C) top

    D) near centre

    View Answer play_arrow
  • question_answer130) The term nucleosome was given by Outdet, Oluis and Olius called these particle as nu particles, which histone is absent in nucleosome?

    A) \[{{H}_{1}}\]

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

    C) \[{{H}_{3}}a\]

    D) \[{{H}_{4}}\]

    View Answer play_arrow
  • question_answer131) Nucleosome given beaded appearance to chromosome. They help in packing of DNA in the chromosomes. A nucleosome has :

    A) about 2 turns of DNA

    B) 8 histone molecules of 4 types (2 mols each of \[{{H}_{2}}\] a,\[{{H}_{2}}\] b, \[{{H}_{3}}\] and\[{{H}_{4}}\])

    C) 166 nitrogen basepairs

    D) all of the above

    View Answer play_arrow
  • question_answer132) Salivary glands chromosome were discovered by Balbiani (1881) from salivary glands of larva of :

    A) Chironomous

    B) Drosophila

    C) Silk worm

    D) Lac worm

    View Answer play_arrow
  • question_answer133) In SAT chromosome, SAT (Satellite) is terminal part of chromosome beyond secondary contriction. It contains :

    A) DNA

    B) RNA

    C) repetitive DNA

    D) none of these

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  • question_answer134) Material exchange through nucleopores is facilitated by :

    A) lamina propria

    B) lipid layer

    C) nucleoplasmin

    D) nucleoles

    View Answer play_arrow
  • question_answer135) Which one of the following enzymes is responsible for the synthesis of DNA from RNA ?

    A) DNA polymerase

    B) RNA polymerase

    C) Reverse transcriptase

    D) DNA ligase

    View Answer play_arrow
  • question_answer136) Where does formation of acetyl Co-A from pyruvic acid take place?

    A) Mitochondria

    B) Chloroplast

    C) Cytoplasm

    D) Golgi body

    View Answer play_arrow
  • question_answer137) Signet ring stage is characteristic of:

    A) pre-erythrocytic schizogony

    B) post-erythrocytic schizogony

    C) exo-erythrocytic schizogony

    D) erythrocytic schizogony

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  • question_answer138) The phenomenon of regeneration in sponges was observed and explained by :

    A) H.W. Wilson

    B) Aristotle

    C) Robert Grant

    D) Ellis

    View Answer play_arrow
  • question_answer139) Opposite decussate and stipulate leaves is the characteristic feature of members of family :

    A) Rubiaceae

    B) Asclepiadaceae

    C) Malvaceae

    D) Rosaceae

    View Answer play_arrow
  • question_answer140) Persistent calyx forming a cover around the fruit is found in :

    A) Argemone mexicana

    B) Ageratiim conyzoides

    C) Witionia somnifera

    D) Brassica campcstris

    View Answer play_arrow
  • question_answer141) Epigynous and unisexual flowers are found in members of family :

    A) Caryophyllaceae

    B) Cumpanulaceae

    C) Myrtaceae

    D) Cucurbitaceae

    View Answer play_arrow
  • question_answer142) Verticillaster in florescence is the characteristic feature of family :

    A) Euphorbiaceae

    B) Moraceae

    C) Musaceae

    D) Lamiaceae

    View Answer play_arrow
  • question_answer143) Broad spectrum antibiotics are those which :

    A) acts on all bacteria and viruses

    B) is effective in very small amounts

    C) acts on both pathogen and host

    D) acts on a variety of pathogenic

    View Answer play_arrow
  • question_answer144) micro-organisms Find the odd one out:

    A) vaccines - immunology

    B) eco degradation - pesticides

    C) solar energy converter - pest control

    D) recombinant DNA - biotechnology

    View Answer play_arrow
  • question_answer145) The fungus which could bring about hydroxylation required for steroid synthesis is:

    A) Rhizopus stolonifer

    B) Aspcrgillus niger

    C) both [a] and [b]

    D) none of these

    View Answer play_arrow
  • question_answer146) Fermentation consist of three steps. The correct sequence of steps is :

    A) inoculation, sterlization and product recovery

    B) product recovery, sterlization and inoculation

    C) sterlization, inoculation and product recovery

    D) sterlization, product recovery and inoculation

    View Answer play_arrow
  • question_answer147) Usually the xylem of fems is made up of:

    A) only tracheids

    B) only vessels

    C) both tracheids and vessels

    D) none of the above

    View Answer play_arrow
  • question_answer148) Read the following statement and select the correct answer on the basis of the codes given below the statement:

    A) pteridophytes and gymnosperm are included in archegonide

    B) they have archegonid as the female reproductive organ

    C) both [a] and [b]

    D) none of the above

    View Answer play_arrow
  • question_answer149) In which of the following pairs of genera sporocarps are presents ?

    A) Marsilia and Salvinia

    B) Marsilia and Isoetes

    C) Isoetes and Salvinia

    D) Marsilia and Lycopodium

    View Answer play_arrow
  • question_answer150) In Equisctum stem, the cavity formed by dissolution of protoxylem is known as :

    A) vallicular canal

    B) vascular canal

    C) carinal canal

    D) resin canal

    View Answer play_arrow
  • question_answer151) The scutellum of the grass embryo which is a monocotyledonous is :

    A) photosynthetic organ

    B) absorptive organ

    C) reserve food storage organ

    D) vestigial organ

    View Answer play_arrow
  • question_answer152) During fatique :

    A) blood circulation in muscles stop

    B) muscle fails to relax

    C) muscles fails to be stimulated

    D) motor nerve does not respond to muscles

    View Answer play_arrow
  • question_answer153) Which is true of muscle contraction?

    A) Sarcolemma becomes permeable to \[C{{a}^{2+}}\]ions

    B) Sarcolemma becomes permeable to \[\text{N}{{\text{a}}^{\text{+}}}\]ions

    C) Sarcolemma becomes non-permeable to\[\text{N}{{\text{a}}^{\text{+}}}\] ions

    D) Concentration of \[\text{C}{{\text{a}}^{\text{2+}}}\]ions is reduced in myoblasm

    View Answer play_arrow
  • question_answer154) Stimulus several times greater than threshold stimulus is provided to muscle fibre. It will:

    A) contract with same force

    B) contract forcefully

    C) contract sightly

    D) undergo tetany

    View Answer play_arrow
  • question_answer155) The correct sequence of meninges from inner to outer side is :

    A) arachnoid\[\to \] aurameter\[\to \]piameter

    B) arachnoid\[\to \] piameter\[\to \] duramater

    C) piamater\[\to \] duramater\[\to \] arachnoid

    D) piamater\[\to \] arachnoid\[\to \] duramatar

    View Answer play_arrow
  • question_answer156) Somaesthetic or post central area is responsible for:

    A) initiation of moter impulses for voluntary muscles

    B) initiation of moter impulses for involuntary muscles

    C) perception of pain, touch and temperature

    D) co-ordination of speech

    View Answer play_arrow
  • question_answer157) Vagus nerve is composed mainly of parasympathetic fibres. The preganglionic fibres forms a network in the walls of the organ. This network is known as :

    A) choroid plexus

    B) nervous plexus

    C) auerbach plexus

    D) branchial plexus

    View Answer play_arrow
  • question_answer158) Striated muscles contract because of :

    A) Sliding of myosin rods on actin rods

    B) Sliding of actin rods on myosin rods

    C) actin rods coming close to each other

    D) myosin rods coming close to each other

    View Answer play_arrow
  • question_answer159) Smooth muscles are :

    A) involuntary, spindle shaped, uninucleated, tapering

    B) voluntary, multinucleate and cylindrical

    C) involuntary, cylindrical, multinucleate

    D) voluntary, branched uninuclear

    View Answer play_arrow
  • question_answer160) The term haematocrit means :

    A) the percentage of blood that is red blood cells

    B) the ratio of blood volume tb extracellular spaced

    C) the percentage of new blood cells formed every 120 days

    D) the percentage of blood that is white blood cells

    View Answer play_arrow
  • question_answer161) What is the main difference in human and frog RBC?

    A) Human RBC are non-nucleated

    B) Haemoglobin is found only in human RBC

    C) Human RBC have nucleus

    D) Human RBC are multinucleated

    View Answer play_arrow
  • question_answer162) Prothrombin is found in :

    A) intestine and helps in cellulose digestion

    B) lever and helps in production of bile

    C) blood and gives red colour

    D) blood and helps in blood clotting

    View Answer play_arrow
  • question_answer163) Which type of WBCs are most abundant in blood of rabbit and other vertibrates ?

    A) Acidophils

    B) Basophils

    C) Lymphocytes

    D) Neutrophils

    View Answer play_arrow
  • question_answer164) Blood clotting in a test tube can be prevented by adding a little of :

    A) sodium oxalate

    B) sodium chloride

    C) sodium hydroxide

    D) ammonium chloride

    View Answer play_arrow
  • question_answer165) Oval, biconvex and nucleated RBCs are found in :

    A) camel

    B) rabbit

    C) man

    D) frog

    View Answer play_arrow
  • question_answer166) Which of the following is an anticoagulant and checks blood coagulation in blood vessels ?

    A) Prothrombin

    B) Globulin

    C) Thromboplastin

    D) Heparin

    View Answer play_arrow
  • question_answer167) In normal healthy female, the number of RBC/mm3 of blood is :

    A) 6.5-7.0 million

    B) 5.5-6.0 million

    C) 4.5-5.0 million

    D) 3.5-4.0 million

    View Answer play_arrow
  • question_answer168) The tissue which forms the basic structure of lymphoid organs, liver etc., is :

    A) lymphoid tissue

    B) reticular tissue

    C) elaster tissue

    D) areolar tissue

    View Answer play_arrow
  • question_answer169) Development of embryo from a cell of embryo sac other than egg is an example of :

    A) apospory

    B) apogamy

    C) adventive embryogemy

    D) parthenogenesis

    View Answer play_arrow
  • question_answer170) Suppose evolution on earth has occurred in such a way that there are 96 amino acids instead of 20. DNAhas 12 different types of bases and DNA synthesis occur in the same way as today. The minimum number of bases per DNA codon would be :

    A) 12

    B) 8

    C) 2

    D) 3

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  • question_answer171) Haemolytic jaundice is due to a dominant gene but only 10% of the people develops this disease. A heterozygous male marries a homozygous normal woman. What proportion of the children in population would be expected to have this disorder?

    A) \[1/5\]

    B) \[1/10\]

    C) \[1/20\]

    D) \[1/2\]

    View Answer play_arrow
  • question_answer172) Which of the following should be avoided in bilogical marriages ?

    A) \[{{A}^{+}}\] boy and \[{{A}^{+}}\] girl

    B) \[{{A}^{+}}\] boy and \[{{A}^{-}}\]girl

    C) \[{{O}^{-}}\] boy and \[{{O}^{+}}\] girl

    D) \[{{O}^{-}}\] boy and \[{{O}^{+}}\] girl

    View Answer play_arrow
  • question_answer173) After examining the blood group of husband and wife, the doctor advised them not to have more than one child. The blood groups of the couple are likely to be :

    A) male \[R{{h}^{-}}\] and female \[R{{h}^{+}}\]

    B) femal \[R{{h}^{-}}\] and male \[R{{h}^{+}}\]

    C) male \[R{{h}^{+}}\] and female \[R{{h}^{+}}\]

    D) male \[R{{h}^{-}}\] and female \[R{{h}^{-}}\]

    View Answer play_arrow
  • question_answer174) The number of ATP molecules produced by electron transport system from Krebs cycle intermediates in a single turn is :

    A) 11

    B) 14

    C) 12

    D) 16

    View Answer play_arrow
  • question_answer175) The enzymes called marker enzymes in lysosome is :

    A) acid phosphatase

    B) hydrolase

    C) hyaluronidase

    D) lysozyme

    View Answer play_arrow
  • question_answer176) Centrioles (microcentrosome or cell centre) is:

    A) microtubuler and membraneles

    B) absent in Amoeba, red algae, blue-green algae, conifers and angiosperm and made up of a peripheral implet microtubular

    C) basically locomotary and their role in spindle formation is secondary

    D) all of the above

    View Answer play_arrow
  • question_answer177) Modules which are present in leguminous plants are meant for fertilizers and are found in/on:

    A) certain leguminous plants

    B) leschynomene

    C) Scsbania rostcrata

    D) all of the above

    View Answer play_arrow
  • question_answer178) A mutation in bacterial results in non-formation of mesosomes. The expected results will be :

    A) only cell division will occur

    B) only replication of DNA will occur

    C) only karyokinesis will occur

    D) all of the above

    View Answer play_arrow
  • question_answer179) Agriculturists have reported about 40-50% higher yields of rice by applying :

    A) Azolla pinnata

    B) cyanophycean members

    C) mycorrhizae

    D) thorn forest

    View Answer play_arrow
  • question_answer180) Bacterial toxins when excreted into the surrounding medium are known as :

    A) toxins

    B) endotoxins

    C) exotoxins

    D) both [b] and [c]

    View Answer play_arrow
  • question_answer181) Antibacterial and antifungal antibiotic called citrinin is obtained from :

    A) Aspergillus flavus

    B) Sfreptomyces erythraeus

    C) Ustilaga zeae

    D) None of the above

    View Answer play_arrow
  • question_answer182) Light coloured peppered moth/Biston betularia gets changed to its darker carbonaria variety due to :

    A) translocation of block of genes in response to heavy carbons

    B) deletion of gene segment due to industrial pollution

    C) mutation of single Mendelian gene for survival in smoke industrial environment

    D) industrial carbon deposited on wings

    View Answer play_arrow
  • question_answer183) Organisms have a tendency towards increase in size during their evolution; is :

    A) Hulls Rule

    B) Copes Rule

    C) Both [a] and [b]

    D) None of the above

    View Answer play_arrow
  • question_answer184) Modern synthetic theory recognises five basic types of processes for evolution wliich of the following two processes gluds the population into adaptive channels?

    A) Gene mutation and natural selection

    B) Genetic recombination and reproductive isolation

    C) Natural selection and reproductive isolation

    D) None of the above

    View Answer play_arrow
  • question_answer185) Where there is sustained directional change in the average characters of a population due to adaptation to a shifting environment is called:

    A) quantum evolution

    B) phyletic evolution

    C) both [a] and [b]

    D) none of these

    View Answer play_arrow
  • question_answer186) When no new population are formed a result of miner changes in the gene pool of a population from one generation to next, the process is known as:

    A) convergent evolution

    B) divergent evolution

    C) sequential evolution

    D) all of the above

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  • question_answer187) The major role in formation of new species from old species is played by :

    A) autoploidy

    B) allopolyploidy

    C) both [a] and [b]

    D) none of these

    View Answer play_arrow
  • question_answer188) The type of speciation which results due to chromosomal aberration (like inversion and translocation) change in chromosomes number (polyploidy, autopolyploidy etc.) is known as :

    A) phyletic speciation

    B) quantum speciation

    C) gradual speciation

    D) none of the above

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  • question_answer189) Relationship between hermit crab and sea anaemone shows which type of association ?

    A) Commensalism

    B) Symbiosis

    C) Mutualism

    D) None of these

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  • question_answer190) Which of the following can convert \[N{{H}_{3}}/N{{O}_{3}}\] into amino acid ?

    A) Reducers

    B) Osmotrophs

    C) Transducers

    D) Detrivores

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  • question_answer191) The natural cycling of carbon between organism and their environment is directly accomplished through :

    A) radiations of solar energy

    B) photosynthesis and respiration

    C) nutrition and excretion

    D) all of the above

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  • question_answer192) Acid rain in some industrial cities are due to :

    A) excessive release of \[C{{O}_{2}}\] by burning of fossil fuels

    B) excessive concentration of \[S{{O}_{2}}\] and \[N{{O}_{2}}\]in air by deforestation

    C) excessive release of \[S{{O}_{2}}\]by industries and coal gas

    D) deforestation, population explosion and release of \[C{{O}_{2}}\]by automobile exhausts

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  • question_answer193) According to our national forest policy, forests are divided into :

    A) 2 categories

    B) 8 categories

    C) 5 categories

    D) 3 categories

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  • question_answer194) Which of the following is the first fossil fuel exploited for commercial energy ?

    A) Natural gas

    B) Coal

    C) Oil shale

    D) Petroleum

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  • question_answer195) The biome, which is characterised by broad-leaved vegetation, fire resistant resinous plants and drough evading plant is known as :

    A) sleppes

    B) savanna

    C) deciduous forests

    D) none of these

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  • question_answer196) The plants species which is on the verge of extinction due to over exploitation is/are :

    A) gloriosa

    B) podophylum

    C) ceritella

    D) all of these

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  • question_answer197) The addition of any substance to water which leads to change in its physical and chemical characteristic and which infere is its legitimate purpose is defined as water pollution. It results in :

    A) decrease turibidity

    B) increase oxygenation

    C) increase photosynthesis

    D) increase turbidity deoxygenating

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  • question_answer198) According ro current views the role of boron in plants is in the biosynthesis of :

    A) sucrose and amylopectin

    B) cellulose and starch

    C) fats and oils

    D) pectin and DNA

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  • question_answer199) A nutrient element essential for the formation of micro-tubules of the mitotic spindle apparatus during cell division is :

    A) phosphorus

    B) sulphur

    C) calcium

    D) zinc

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  • question_answer200) The first electron acceptor in photosystem-I of cyclic photophosphorylation is :

    A) cytochrome

    B) plastocyanin

    C) ferrodoxin

    D) plastoquinone

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