Solved papers for Uttarakhand PMT Uttarakhand PMT Solved Paper-2010

done Uttarakhand PMT Solved Paper-2010

  • question_answer1) A large number of bullets are fired in all directions with same speed v. What is the maximum area on the ground on which these bullets will spread

    A) \[\pi \frac{{{V}^{2}}}{g}\]

    B) \[\pi \frac{{{V}^{2}}}{{{g}^{2}}}\]

    C) \[{{\pi }^{2}}\frac{{{V}^{4}}}{{{g}^{2}}}\]

    D) \[{{\pi }^{2}}\frac{{{V}^{2}}}{{{g}^{2}}}\]

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  • question_answer2) A force vector applied on a body is given by \[\overset{\text{ }\!\!\hat{\ }\!\!\text{ }}{\mathop{\text{F}}}\,\text{=6}\overset{\text{ }\!\!\hat{\ }\!\!\text{ }}{\mathop{\text{i}}}\,\text{-8}\overset{\text{ }\!\!\hat{\ }\!\!\text{ }}{\mathop{\text{j}}}\,\text{+10}\overset{\text{ }\!\!\hat{\ }\!\!\text{ }}{\mathop{\text{k}}}\,\] and acquires an acceleration of 1 m/s2. Then the mass of the body is

    A)  10\[\sqrt{2}\]kg        

    B)  \[2\sqrt{10}\] kg

    C)  10kg          

    D)  20kg

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  • question_answer3) A 2 kg block is dropped from a height of 0.4 m on a spring of force constant k = 1960 N/m. The maximum compression of the spring is

    A) 0.1 m

    B) 0.2 m

    C) 0.3m

    D) 0.4m

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  • question_answer4) A solid sphere of mass 2 kg rolls up a \[30{}^\circ \] incline with an initial speed 10 m/s. The maximum height reached by the sphere is\[(g=10m/{{s}^{2}})\]

    A)  3.5m           

    B)  7.0m

    C)  10.Sm         

    D)  14.0m

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  • question_answer5) The ratio of the adiabatic bulk modulus to the isothermal bulk modulus of a perfect gas is equal to (symbols have their usual meanings)

    A) \[{{C}_{p}}-{{C}_{v}}\]

    B) \[\frac{{{C}_{p}}}{{{C}_{v}}}\]

    C) \[\frac{{{C}_{v}}}{{{C}_{p}}}\]

    D) \[\sqrt{\frac{{{C}_{p}}}{{{C}_{v}}}}\]

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  • question_answer6) A simple pendulum has time period T. The pendulum is completely immersed in a non-viscous liquid whose density is one-tenth, of that of the material of the bob. The time period of the pendulum immersed in liquid is

    A) \[T\]

    B) \[\sqrt{\frac{9}{10}}T\]

    C) \[\sqrt{\frac{10}{9}T}\]

    D) \[\frac{T}{10}\]

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  • question_answer7) How many times more intense is a 90 dB sound than a 40 dB sound?

    A) 2.5

    B) 5

    C) 50

    D) 10s

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  • question_answer8) If\[x=\frac{{{\varepsilon }_{0}}lv}{t}\] where \[{{\varepsilon }_{0}}\] is the permittivity of free space, v is length, v is potential difference and t is time. The dimensions of X are the same as that of

    A) charge

    B) resistance

    C) voltage

    D) current

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  • question_answer9) An electric dipole placed in a uniform electric field will have minimum potential energy when the dipole moment is inclined to the field at an angle

    A) \[\pi \]

    B) \[\frac{\pi }{2}\]

    C) zero

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

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  • question_answer10) In the figure, the equivalent capacitance between A and B is

    A) 3.75 \[\pi F\]

    B) 5.25 \[\pi F\]

    C) 6.5 \[\pi F\]

    D) 10.5 \[\pi F\]

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  • question_answer11) If we add impurity to a metal those atoms also deflect electrons. Therefore,

    A) the electrical and thermal conductivities both increase

    B) the electrical and thermal conductivities both decrease

    C) the electrical conductivity increases but thermal conductivity decreases

    D) the electrical conductivity decreases but thermal conductivity increases

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  • question_answer12) A toroidal solenoid with an air core has an average radius of 15 cm, area of cross-section 12 cm2 and 1200 turns. Ignoring the field variation across the cross-section of the toroid, the self-inductance of the toroid is

    A) 4.6 mH

    B) 6.9 mH

    C) 2.3 mH

    D) 9.2 mH

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  • question_answer13) Two plane mirrors are placed perpendicular to each other. A ray strikes one mirror and after reflection from the second mirror will be

    A) perpendicular to the original ray

    B) parallel to the original ray

    C) at\[45{}^\circ \]to the original ray

    D) can be at any angle to the original ray

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  • question_answer14) An electron moving with velocity\[2\times {{10}^{7}}m/s\] describes a circle in a magnetic field of strength\[2\times {{10}^{-2}}T\]. If \[\left( \frac{e}{m} \right)\] of electron is\[1.76\times {{10}^{11}}C/kg\]then the diameter of the circle is nearly

    A) 1.1 cm

    B) 1.1 mm

    C) 1.1m

    D) 11cm

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  • question_answer15) An electron makes transition inside a hydrogen atom. The orbital angular momentum of the electron may change by

    A) \[h\]

    B) \[\frac{h}{3\pi }\]

    C) \[\frac{h}{2\pi }\]

    D) \[\frac{h}{4\pi }\]

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  • question_answer16) The transfer ratio \[\beta \] of a transistor is 50. The input resistance of the transistor when used in the common emitter mode is 1 \[K\Omega \] The peak value of the collector alternating current for an input peak voltage of 0.01V is

    A) 100 \[\mu \]A

    B) 500 \[\mu \]A

    C) 0.01 \[\mu \]A

    D) 0.25 \[\mu \]A

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  • question_answer17) A combination of convex and concave lenses has power 4 D. If the convex lens has power 5 D, the focal length of the concave lens will be

    A) 100cm

    B) 100 cm

    C) \[-1\text{ }cm\]

    D) \[\frac{100}{-9}\]cm

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  • question_answer18) A scooter of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10 s is

    A) 360 N

    B) 720 N

    C) 180 N

    D) \[120\times 10.8\text{ }N\]

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  • question_answer19) A heat engine absorbs heat at\[327{}^\circ C\]and exhausts heat at\[127{}^\circ C\]. The efficiency of engine is \[\eta \] and the maximum amount of work performed by the engine per kilocalorie of heat input is W. Then,

    A) \[\eta \]=0.38

    B) \[\eta \]=0.88

    C) W=1596J

    D) W=1400J

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  • question_answer20) A simple pendulum with length L and mass of the bob is vibrating with an amplitude a. Then the maximum tension in the string is

    A) mg

    B) \[mg\left[ 1+{{\left( \frac{a}{L} \right)}^{2}} \right]\]

    C) \[mg{{\left[ 1+\frac{a}{2L} \right]}^{2}}\]

    D) mg\[{{\left[ 1+\left( \frac{a}{L} \right) \right]}^{2}}\]

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  • question_answer21) Two charged conducting spheres of radii \[{{R}_{1}}\] and\[{{R}_{2}}\] separated by a large distance are connected by a long wire. The ratio of the charges on them is

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

    B) \[\frac{{{R}_{2}}}{{{R}_{1}}}\]

    C) \[\frac{{{R}_{{{1}^{2}}}}}{{{R}_{{{2}^{2}}}}}\]

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

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  • question_answer22) A proton and an a-particle, accelerated through the same potential difference, enter a region of uniform magnetic field normally. If the radius of the proton orbit is 10 cm, then radius of a-orbit is

    A) 10cm

    B) \[10\sqrt{2}\]cm

    C) 20cm

    D) \[5\sqrt{2}\] cm

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  • question_answer23) In a noiseless transformer, an alternating current of 2 A is flowing in the primary coil. The number of turns on the primary and secondary coils are 100 and 20 respectively. The value of the current in the secondary coil is

    A) 0.08 A

    B) 0.4 A

    C) 5 A

    D) 10 A

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  • question_answer24) A solenoid 30 cm long is made by winding 2000 loops of wire on an iron rod whose cross-section is 1.5 cm2. If the relative permeability of the iron is 6000, what is the self-inductance of the solenoid?

    A) 1.5 H

    B) 2.5 H

    C) 3.5 H

    D) 0.5 H

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  • question_answer25) A luminous object is placed 20 cm from surface of a convex mirror and plane mirror is set, so that virtual images formed in two mirrors coincide. If plane mirror is at a distance of 12 cm from object, then focal length of convex mirror is

    A) 5cm

    B) 10cm

    C) 20 cm

    D) 40 cm

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  • question_answer26) In a shunted ammeter, only 10% of current passes through the galvanometer of resistance G. The resistance of the shunt is

    A) \[9G\]

    B) \[10G\]

    C) \[\frac{G}{9}\]

    D) \[\frac{G}{10}\]

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  • question_answer27) The output Y of the logic circuit shown in figure is best represented as

    A) \[\overline{A}+\overline{B.C}\]

    B) \[A+\overline{B.}\]

    C) \[\overline{A+B.C}\]

    D) \[A+\overline{B.}\,C\]

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  • question_answer28) A resistor of 6 k\[\Omega \] with tolerance 10% and another of 4 k\[\Omega \] with tolerance 10% are connected in series. The tolerance of combination is about

    A) 5%

    B) 10%

    C) 12%

    D) 15%

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  • question_answer29) A stone attached to a rope of length 80 cm is rotated in vertical plane with a speed of 240 rpm. At the moment when the velocity of the stone is directed vertically upwards, the rope ruptures. To what further height does the stone rise? (The air resistance should be neglected)

    A) 10.3m

    B) 41.2m

    C) 20.4m

    D) 24.9m

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  • question_answer30) Two bodies of masses 10 kg and 100 kg are separated by a distance of 2m. The gravitational potential at the mid-point on the line joining the two is

    A) \[7.3\times {{10}^{-7}}\text{J/kg}\]

    B) \[7.3\times {{10}^{-8}}\text{J/kg}\]

    C) \[7.3\times {{10}^{-9}}\text{J/kg}\]

    D) \[7.3\times {{10}^{-6}}\text{J/kg}\]

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  • question_answer31) A vessel has 6 g of hydrogen at pressure p and temperature 500 K. A small hole is made in it so, That hydrogen leaks out. How much hydrogen leaks out if the final pressure is \[\frac{P}{2}\] and temperature falls to 300 K?

    A) 2 g

    B) 3 g

    C) 4 g

    D) 1 g

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  • question_answer32) For an enclosure maintained at 1000 K, the maximum radiation occurs at wavelength \[{{\lambda }_{m.}}\] If the temperature is raised to 2000 K, the peak will shift to

    A) \[{{\lambda }_{m.}}/2\]

    B) \[2{{\lambda }_{m.}}\]

    C) \[{{2}^{4}}{{\lambda }_{m.}}\]

    D) \[{{2}^{-4}}{{\lambda }_{m.}}\]

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  • question_answer33) An electron moving in a circular orbit of radius R, with a period T is equivalent to a magnetic dipole of dipole moment

    A) \[\frac{2\pi \operatorname{Re}}{T}\]

    B) \[\frac{\pi eR}{T}\]

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

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

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  • question_answer34) A coil of area\[5c{{m}^{2}}\]and of 20 turns is placed in uniform magnetic field of\[{{10}^{3}}T\]The normal to the plane of the coil makes an angle of\[60{}^\circ \]with the magnetic field. The flux in max well through the coil, is

    A) \[{{10}^{5}}\]

    B) \[5\times {{10}^{4}}\]

    C) \[2\times {{10}^{4}}\]

    D) \[5\times {{10}^{3}}\]

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  • question_answer35) A coil has an inductance of 0.7 H and is joined in series with a resistance of 220 \[\Omega \] When an alternating emf of 220 Vat 50 cps is applied to it, then the wattless component of the current in the circuit is

    A) 5 A

    B) 0.5 A

    C) 0.7 A

    D) 7 A

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  • question_answer36) An electron jumps from the 4th orbit to the 2nd orbit of hydrogen atom. Given the Rydbergs constant\[R={{10}^{5}}c{{m}^{-1}},\]the frequency in Hz of the emitted radiation will be

    A) \[\frac{3}{10}\times {{10}^{5}}\]

    B) \[\frac{16}{3}\times {{10}^{15}}\]

    C) \[\frac{9}{16}\times {{10}^{15}}\]

    D) \[\frac{3}{4}\times {{10}^{15}}\]

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  • question_answer37) The decay constant K of a radioactive sample is the probability of decay of an atom in unit time. Then,

    A) \[\lambda \]decreases as the atom becomes older

    B) \[\lambda \]increases as the age of atoms increases

    C) \[\lambda \]independent of the age of atoms

    D) \[\lambda \]behaviour of \[\lambda \]A with time depends on the nature of the activity

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  • question_answer38) 38. If a surface has work function 4.0 eV, what is the maximum velocity of electrons liberated from the surface when it is irradiated with ultraviolet radiation of wavelength 0.2 \[\mu m\]?

    A) \[4.4\times {{10}^{5}}m/s\]

    B) \[8.8\times {{10}^{7}}m/s\]

    C) \[8.8\times {{10}^{5}}m/s\]

    D) \[4.4\times {{10}^{7}}m/s\]

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  • question_answer39) An installation consisting of an electric motor driving a water pump lifts 75 L of water per second to a height of 4.7 m. If the motor consumes a power of 5 kW, then the efficiency of the installation is

    A) 39%

    B) 69%

    C) 93%

    D) 96%

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  • question_answer40) The Keplers second law states that the straight line joining the planet to the sun sweeps out equal areas in equal times. The statement is equivalent to saying that

    A) total acceleration is zero

    B) transverse acceleration is zero

    C) longitudinal acceleration is zero

    D) radial acceleration is zero

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  • question_answer41) The number of possible structures of amines\[({{C}_{7}}{{H}_{9}}N)\]having one benzene ring is

    A) 5

    B) 3

    C) 4

    D) 6

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  • question_answer42) Vitamin\[{{B}_{1}}\]is

    A) riboflavin

    B) cobalamin

    C) thiamine

    D) pyridoxine

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  • question_answer43) During roasting of zinc blende, it converts to

    A) \[ZnO\]

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

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

    D) \[Zn\]

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  • question_answer44) \[Xe{{F}_{4}}\]reacts with water at\[-80{}^\circ C\]to give

    A) \[XeO{{F}_{2}}\]

    B) \[XeO{{F}_{4}}\]

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

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

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  • question_answer45) The number of\[POP\]bonds in the structure of phosphorus pentaoxide and phosphorus trioxide are respectively

    A) 6,6

    B) 5,5

    C) 5, 6

    D) 6, 5

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  • question_answer46) The most unsymmetrical and symmetrical systems are respectively

    A) tetragonal, cubic

    B) triclinic, cubic

    C) rhombohedral, hexagonal

    D) orthorhombic, cubic

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  • question_answer47) In the reaction,\[HN{{O}_{3}}\]+Rpio\[\xrightarrow[{}]{{}}\]\[4HP{{O}_{3}}+x,\]the product X is

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

    B) \[{{N}_{2}}{{O}_{5}}\]

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

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

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  • question_answer48) The basicity of orthophosphoric acid is

    A) 2

    B) 4

    C) 3

    D) 5

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  • question_answer49) In the radioactive change, \[_{z}{{p}^{A}}{{\xrightarrow[{}]{{}}}_{z+1}}{{Q}^{A}}{{\xrightarrow[{}]{{}}}_{z-1}}{{R}^{A-4}}{{\xrightarrow[{}]{{}}}_{z-1}}{{S}^{A-4}},\] the radiations emitted in sequence are

    A) \[\alpha ,\beta ,\gamma \]

    B) \[\beta ,\alpha ,\gamma \]

    C) \[\gamma ,\alpha ,\beta \]

    D) \[\beta ,\gamma ,\alpha \]

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  • question_answer50) In contact process of manufacture\[{{H}_{2}}S{{O}_{4}},\]the catalyst used is

    A) iron

    B) \[{{V}_{2}}{{O}_{5}}\]

    C) chromium

    D) oxides of nitrogen

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  • question_answer51) Which of the following is pseudohalogen?

    A) \[I{{F}_{7}}\]

    B) \[{{(CN)}_{2}}\]

    C) \[IC{{l}_{2}}\]

    D) \[I_{3}^{-}\]

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  • question_answer52) Correct formula of calomel is

    A) \[HgC{{l}_{2}}\]

    B) \[HgC{{l}_{2}}.{{H}_{2}}O\]

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

    D) \[HgS{{O}_{4}}\]

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  • question_answer53) The angle in case of a water molecule is approximately

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

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

    C) \[105{}^\circ \]

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

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  • question_answer54) Which one is an example of globular protein?

    A) Keratin

    B) Collagen

    C) Insulin

    D) Myosin

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  • question_answer55) Which of the following reaction takes place when a mixture of concentrated\[HN{{O}_{3}}\]and \[{{H}_{2}}S{{O}_{4}}\]reacts with benzene at 350K?

    A) Sulphonation

    B) Nitration

    C) Hydrogenation

    D) Dehydration

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  • question_answer56) How many chiral carbon atoms are present in 2, 3, 4 - Trichloropentane?

    A) Three

    B) Two

    C) One

    D) Four

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  • question_answer57) Geometry of reaction intermediate in\[{{S}_{N}}1\]reaction is

    A) tetrahedral

    B) planar

    C) triangular bipyramidal

    D) None of the above

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  • question_answer58) In acetylene molecule, the two carbon atoms are linked by

    A) One-o-bond and two Ti-bonds

    B) two o-bonds and one TC-bond

    C) three o-bonds

    D) three TC-bonds

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  • question_answer59) In a galvanic cell, which one of the following statements is not correct?

    A) Anode is negatively charged

    B) Cathode is positively charged

    C) Reduction takes place at the anode

    D) Reduction takes place at the cathode

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  • question_answer60) The zig-zag motion of colloidal particles was first observed by

    A) John Tyndall

    B) Robert Brown

    C) Zsigmondy

    D) Ostwald

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  • question_answer61) Which of the following is not present in DNA?

    A) Adenine

    B) Guanine

    C) Uracil

    D) Thymine

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  • question_answer62) Oxygen and ozone are

    A) isotopes

    B) isomers

    C) isobars

    D) allotropes

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  • question_answer63) Which of the following is weakest acid?

    A)

    B)

    C)

    D)

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  • question_answer64) The reaction between an alkyl halide and an alkoxide ion to give an ether is known as

    A) Williamsons synthesis

    B) Clemmensens reduction

    C) Fittig reaction

    D) Wurtz reaction

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  • question_answer65) \[C\xrightarrow[{}]{{{H}_{2}}O}D\] Here, D is

    A) \[C{{H}_{3}}\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,OC{{H}_{2}}C{{H}_{3}}\]

    B) \[C{{H}_{3}}O\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,C{{H}_{2}}C{{H}_{3}}\]

    C) \[C{{H}_{3}}\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,C{{H}_{2}}C{{H}_{2}}OH\]

    D) \[C{{H}_{3}}C{{H}_{2}}\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,C{{H}_{2}}OH\]

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  • question_answer66) \[[CoBr{{(N{{H}_{3}})}_{5}}]S{{O}_{4}}\]and\[[CoS{{O}_{4}}{{(N{{H}_{3}})}_{5}}]Br\]are related to each other as

    A) ionisation isomers

    B) linkage isomers

    C) coordinatiom isomers

    D) optical isomiers

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  • question_answer67) Which of the following atoms has no neutron in its nucleus?

    A) Helium

    B) Lithium

    C) Protium

    D) Tritium

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  • question_answer68) With increasing bond order, stability of a bond

    A) increases

    B) decreases

    C) remains unaltered

    D) None of these

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  • question_answer69) Urotropine is obtained by the reaction of\[N{{H}_{3}}\]with

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

    B) \[HCHO\]

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

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

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  • question_answer70) Wolff-Kishner reaction is used for the reduction of

    A) carboxylic acids

    B) carbonyl compounds

    C) olefins

    D) nitro compounds

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  • question_answer71) 4-bromo-l-butanol [A] can be converted into 5-hydroxy pentanoic acid [B] by following method [s]

    \[I.\]\[A\xrightarrow[{}]{Mg/ether}\xrightarrow[(ii){{H}_{3}}{{O}^{+}}]{(i)C{{O}_{2}}}B\]
    \[II.\]\[A\xrightarrow[{}]{KCN}\xrightarrow[{}]{{{H}_{3}}{{O}^{+}}}B\]
    \[III.\]\[A\xrightarrow[{}]{Aq.\,KOH}\xrightarrow[{}]{KMn{{O}_{4}}/{{H}^{+}}}B\]
    Select the correct alternate

    A) \[I,\text{ }II,\text{ }III\]

    B) \[I,\text{ }II\]

    C) \[II,\text{ }III\]

    D) \[II\]

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  • question_answer72) Oil of winter green is

    A)

    B)

    C)

    D)

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  • question_answer73) \[\alpha -D-\]glucose and\[\beta -D-\]glucose have a specific rotation of\[+112{}^\circ \]and\[+19.2{}^\circ \] respectively. In aqueous solution, the rotation becomes\[+52{}^\circ \]. This is known as

    A) racemisation

    B) mutarotation

    C) inversion

    D) enolisation

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  • question_answer74) Time required to decompose\[S{{O}_{2}}C{{l}_{2}}\]to half of its initial amount is 60 min. If the decomposition is a first order reaction, what is the rate constant of the reaction?

    A) \[1.925\times {{10}^{-4}}s\]

    B) \[2.092\times {{10}^{-4}}{{s}^{-1}}\]

    C) \[1.925\times {{10}^{-4}}{{s}^{-1}}\]

    D) \[2.925\times {{10}^{-4}}{{s}^{-1}}\]

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  • question_answer75) Which of the following has a bond order of 1.75?

    A) \[ClO_{3}^{-}\]

    B) \[ClO_{4}^{-}\]

    C) \[NO_{3}^{-}\]

    D) \[CO_{3}^{2-}\]

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  • question_answer76) The ionisation energy of nitrogen is larger than that of oxygen because of

    A) greater attraction of electrons by the nucleus

    B) the size of nitrogen atom being smaller

    C) the half-filled p-orbitals possess extra stability

    D) greater penetration effect

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  • question_answer77) Which one is the strongest reducing agent?

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

    B) \[As{{H}_{3}}\]

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

    D) \[P{{H}_{3}}\]

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  • question_answer78) Preparation of ethane by electrolysis of aqueous solution of potassium acetate is called

    A) Wurtz reaction

    B) Kolbes electrolysis

    C) Grignard reaction

    D) Sabatier-Sendersens reaction

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  • question_answer79) What is density of\[S{{O}_{2}}\]gas at\[27{}^\circ C\]and 2 arm pressure? (Atomic weight\[S=32,\text{ O}=16,\] \[R=0.0821\text{ }L\text{ }atm\text{ }{{K}^{-1}}mo{{l}^{-1}}\])

    A) 5.0246

    B) 4.1246

    C) 3.0196

    D) 5.1969

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  • question_answer80) 38.00 mL of moist nitrogen gas were collected at\[27{}^\circ C\]and 746.5 mm pressure. What is the volume of the gas at\[0{}^\circ C\]and 760 mm pressure? (Aq. tension at\[27{}^\circ C\]is 26.5 mm).

    A) 32.76

    B) 23.76

    C) 12.05

    D) 11.56

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  • question_answer81) What is the enthalpy of hydrogenation of ethylene, given that the enthalpy of combustion of ethylene, hydrogen and ethane are\[-1410.0,-286.2\]and\[-1560.6\text{ }kJ\text{ }mo{{l}^{-1}}\]respectively at 298 K?

    A) 135.6

    B) \[-135.6\]

    C) 125.6

    D) \[-125.6\]

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  • question_answer82) What is the pH value of\[0.03\text{ }N\text{ }HCl\]solution?

    A) 2.5229

    B) 3.2229

    C) 1.5229

    D) None of these

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  • question_answer83) The\[{{H}_{2}}{{O}^{+}}\]ion concentration of a solution having pH 6.58 is

    A) \[2.63\times {{10}^{7}}\]

    B) \[2.63\times {{10}^{-7}}\]

    C) \[36.2\times {{10}^{7}}\]

    D) \[36.2\times {{10}^{-7}}\]

    View Answer play_arrow
  • question_answer84) One mole of magnesium nitride on reaction with an excess of water gives

    A) one mole of ammonia

    B) one mole of nitric acid

    C) two moles of ammonia

    D) two moles of nitric acid

    View Answer play_arrow
  • question_answer85) Photoelectric effect is maximum in

    A) Cs

    B) Na

    C) K

    D) \[Li\]

    View Answer play_arrow
  • question_answer86) Fused ionic compounds

    A) are insulators

    B) are used as semiconductors

    C) conduct electricity

    D) do not conduct electricity

    View Answer play_arrow
  • question_answer87) The bonds between P atoms and\[Cl\]atoms in\[PC{{l}_{5}}\]are likely to be

    A) ionic with no covalent character

    B) covalent with some ionic character

    C) covalent with no ionic character

    D) ionic with some metallic character

    View Answer play_arrow
  • question_answer88) Covalent compounds are soluble in

    A) polar solvents

    B) non-polar solvents

    C) concentrated acids

    D) all solvents

    View Answer play_arrow
  • question_answer89) An ingredient of baking powder is

    A) sodium bicarbonate

    B) sodium chloride

    C) borax

    D) sodium carbonate

    View Answer play_arrow
  • question_answer90) The most reactive allotrope of phosphorus is

    A) violet phosphorus

    B) white phosphorus

    C) red phosphorus

    D) scarlet phosphorus

    View Answer play_arrow
  • question_answer91) Correct order representing electro negativities of halogens is

    A) \[F<Cl<Br<I\]

    B) \[F>Cl>Br>I\]

    C) \[F>Cl<Br<I\]

    D) \[F<Cl>Br>I\]

    View Answer play_arrow
  • question_answer92) For a first order reaction,\[A\to \]products, if k is the rate constant then the half-life period of the reaction is

    A) \[\frac{1}{k}\log \frac{[A]}{{{[A]}_{0}}}\]

    B) \[\frac{1}{k}\frac{1}{[A]}\]

    C) \[\frac{0.693}{k}\]

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

    View Answer play_arrow
  • question_answer93) Dead burnt plaster is

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

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

    C) \[CaS{{O}_{4}}.1/2{{H}_{2}}O\]

    D) \[CaS{{O}_{4}}\]

    View Answer play_arrow
  • question_answer94) The active constituent of bleaching powder is

    A) \[Ca{{(OCl)}_{2}}\]

    B) \[Ca(OCl)Cl\]

    C) \[Ca{{(Cl{{O}_{2}})}_{2}}\]

    D) \[Ca(Cl{{O}_{2}})Cl\]

    View Answer play_arrow
  • question_answer95) Which of the following is applied in this reaction? \[C{{H}_{3}}CHBrC{{H}_{2}}C{{H}_{3}}\xrightarrow[{}]{Alc.\,KOH}\] (i) \[C{{H}_{3}}CH=CHC{{H}_{3}}\]major product (ii)\[C{{H}_{2}}=CHC{{H}_{2}}C{{H}_{3}}\]minor product

    A) Hermanns rule

    B) Kharasch effect

    C) Saytzeffs rule

    D) Markownikoffs rule

    View Answer play_arrow
  • question_answer96) Which of the following compound is unknown?

    A) \[NC{{l}_{5}}\]

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

    C) \[SbC{{l}_{3}}\]

    D) \[NC{{l}_{3}}\]

    View Answer play_arrow
  • question_answer97) Group displacement law was given by

    A) Becquerel

    B) Rutherford

    C) Soddy and Fajan

    D) Madam Curie

    View Answer play_arrow
  • question_answer98) Which of the following represents the Lewis structure of\[{{N}_{2}}\]molecule?

    A)

    B)

    C)

    D)

    View Answer play_arrow
  • question_answer99) Cellulose is a polymer containing the monomer

    A) ribose

    B) glucose

    C) fructose

    D) starch

    View Answer play_arrow
  • question_answer100) Minamata disease is due to pollution of

    A) organic waste into drinking water

    B) oil spill in water

    C) industrial waste mercury into fishing water

    D) arsenic into the atmosphere

    View Answer play_arrow
  • question_answer101) The viruses with nucleic acid but without protein coat are known as

    A) viroids

    B) virions

    C) capsomeres

    D) prions

    View Answer play_arrow
  • question_answer102) Identify the vector suitable to clone long fragments of DNA.

    A) Phage vectors

    B) Bacterial plasmids

    C) Yeast plasmids

    D) Cosmids

    View Answer play_arrow
  • question_answer103) Genetic recombination by transduction in bacterial was discovered first in

    A) Salmonella typhimurium

    B) Escherichia coli

    C) Streptococcus pneumoniae

    D) Agrobactermm tumefaciens

    View Answer play_arrow
  • question_answer104) The brown hair present at the base of the petiole of Pteris are called

    A) setae

    B) ramenta

    C) spines

    D) stipules

    View Answer play_arrow
  • question_answer105) Number of peristomial teeth in Funaria capsule is

    A) 16

    B) 32

    C) 64

    D) 128

    View Answer play_arrow
  • question_answer106) Development of haploid plants from totipotent pollen is called

    A) androgenesis

    B) parthenocarpy

    C) emasculation

    D) somatic hybridization

    View Answer play_arrow
  • question_answer107) Grass stem elongates after initial growth due to

    A) lateral meristem

    B) secondary meristem

    C) intercalary meristem

    D) apical meristem

    View Answer play_arrow
  • question_answer108) Protoplast lacks

    A) cytoplasm

    B) nucleus

    C) plasma membrane

    D) cell wall

    View Answer play_arrow
  • question_answer109) An example of physiological xerophyte is

    A) Salvinia

    B) Euphorbia

    C) Salicornia

    D) Agave

    View Answer play_arrow
  • question_answer110) Blood glands of Pheretima are located in which segments?

    A) 1, 2 and 3

    B) 3, 4 and 5

    C) 4, 5 and 6

    D) 10, 11 and 12

    View Answer play_arrow
  • question_answer111) Silicates consumed along with food by Pheretima and excreted by

    A) flame cells

    B) chloragogen cells

    C) intestinal cells

    D) basal cells

    View Answer play_arrow
  • question_answer112) Association between barnacles and Limulus is

    A) symbiosis

    B) antagonism

    C) ectocommens.alism

    D) endocommensalism

    View Answer play_arrow
  • question_answer113) The cells are chlorophyllous, fewer in number, unique in shape and inner walls thick. This decription fits into

    A) subsidiary cells

    B) guard cells

    C) passage cells

    D) bulliform cells

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  • question_answer114) The scientific name of lung fluke of man is

    A) Hymenolepis nana

    B) Schistosomum haematobium

    C) Paragonimus westermani

    D) Echinococcus granulosus

    View Answer play_arrow
  • question_answer115) Plasmodium falciparum causes which type of malaria?

    A) Quartan

    B) Pernicious

    C) Tertian

    D) Benign tertian

    View Answer play_arrow
  • question_answer116) The structures which join two bones at joints are made up of

    A) elastic fibres

    B) collagen fibres

    C) fibrocytes

    D) chondrocytes

    View Answer play_arrow
  • question_answer117) Development of mesoderm in the form of muscles in body wall, leaving alimentary canal non-muscular is the feature of

    A) acoelomates

    B) pseudocoelomates

    C) enterocoelomates

    D) schizocoelomates

    View Answer play_arrow
  • question_answer118) Dermatobiasis in cattle is caused by

    A) maggots of bot fly

    B) wriggler of mosquito

    C) nits of head louse

    D) drones of honey bee

    View Answer play_arrow
  • question_answer119) The type of vascular bundles in the stem of Dracaena is

    A) radial

    B) bicollateral

    C) amphicribal

    D) amphivasal

    View Answer play_arrow
  • question_answer120) Schuffners dots produced by Plasmodium are

    A) reserve food

    B) antibodies

    C) hormones

    D) antigens

    View Answer play_arrow
  • question_answer121) Which of the following has thorns bearing leaves and flowers on them?

    A) Duranta

    B) Artabotrys

    C) Carissa

    D) Bougainvillea

    View Answer play_arrow
  • question_answer122) When malic acid is the respiratory substrate

    A) the amount of carbon dioxide released is more than the oxygen consumed

    B) the amount of carbon dioxide released is less than the oxygen consumed

    C) the amount of carbon dioxide released is equal to oxygen consumed

    D) carbon dioxide is not released

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  • question_answer123) The risk of spoilage is less in salted pickles because of

    A) guttation

    B) plasmolysis

    C) imbibition

    D) diffusion

    View Answer play_arrow
  • question_answer124) In photosynthesis electron transport system, manganese ions are associated with

    A) oxygen evolving complex

    B) cytochrome \[{{f}_{0}}-{{f}_{1}}\]

    C) cytochromehy bg \[{{b}_{6}}-f\]complex

    D) plastoquinones

    View Answer play_arrow
  • question_answer125) Which of the following is needed both in photosynthesis and respiration?

    A) Chlorophyll

    B) Carbon dioxide

    C) Oxygen

    D) Cytochrome

    View Answer play_arrow
  • question_answer126) Identify the trisaccharide

    A) Mannose

    B) Maltose

    C) Raffinose

    D) Galactose

    View Answer play_arrow
  • question_answer127) Karyotype means a

    A) single haploid set of chromosomes of an organisms

    B) diagrammatic representation of the chromosome

    C) genes constituting a single set of chromosomes

    D) type of nucleus of an organism

    View Answer play_arrow
  • question_answer128) The underground stem of this genus is a rhizome

    A) Allium

    B) Gloriosa

    C) Scilla

    D) Lilium

    View Answer play_arrow
  • question_answer129) The characteristic fruit type in Asteraceae is

    A) carcerulus

    B) capsule

    C) cypsela

    D) caryopsis

    View Answer play_arrow
  • question_answer130) Mode of feeding in tunicates

    A) acrophagus

    B) parasitic

    C) ciliary or filter

    D) myxotrophic

    View Answer play_arrow
  • question_answer131) Valve of Thebesius is present in the heart of

    A) fish

    B) frog

    C) Chamaeleon

    D) rabbit

    View Answer play_arrow
  • question_answer132) Soluble fibrinogen is converted into insoluble fibrin by the action of

    A) thromboplastin

    B) cephalin

    C) heparin

    D) thrombin

    View Answer play_arrow
  • question_answer133) Silicosis is caused by

    A) acid rain

    B) depletion of ozone

    C) inhalation of aerosols

    D) inhalation of sulphur dioxide

    View Answer play_arrow
  • question_answer134) The plasmid \[_{\text{p}}\text{B}{{\text{R}}_{\text{322}}}\] used in biotechnology is

    A) yeast

    B) \[{{\text{M}}^{\text{32}}}\]phage

    C) parasite

    D) cloning vehicle

    View Answer play_arrow
  • question_answer135) In Cycas, diploxylic condition is found in

    A) stem

    B) root

    C) coralloid root

    D) leaflet

    View Answer play_arrow
  • question_answer136) The cyst wall of Euglena is made up of

    A) carbohydrates

    B) lipoproteins

    C) lipids

    D) histones

    View Answer play_arrow
  • question_answer137) Western blot test is done for the conformation of

    A) malaria

    B) filaria

    C) anaemia

    D) AIDS

    View Answer play_arrow
  • question_answer138) Separation of sick and non-productive birds from healthy and productive birds is known as

    A) deworming

    B) culling

    C) dubbing

    D) cannibalism

    View Answer play_arrow
  • question_answer139) In Spirogyra, a brief period of tetranucleate condition is found in

    A) hold fast

    B) gametangium

    C) vegetative cell

    D) germinating zygote

    View Answer play_arrow
  • question_answer140) An example for holandric inheritance is

    A) epidermolysis

    B) Turners syndrome

    C) haemophilia

    D) webbed toes

    View Answer play_arrow
  • question_answer141) For a gene with two alleles, if the gene frequency of recessive gene is 0.2. What is the genotypic frequency of homozygous dominant?

    A) 0.064

    B) 0.8

    C) 0.64

    D) 0.32

    View Answer play_arrow
  • question_answer142) The number of lobes in left lung of rabbit is

    A) two

    B) three

    C) four

    D) five

    View Answer play_arrow
  • question_answer143) When one gene influences the expression of another non-allelic gene, it is termed as

    A) epistasis

    B) poly multiple allelism

    C) segregation

    D) pleiotropy

    View Answer play_arrow
  • question_answer144) An example of sex-influenced inheritance is

    A) haemophilia

    B) colour blindness

    C) baldness

    D) Downs syndrome

    View Answer play_arrow
  • question_answer145) Which one of the following is a reference to xenogamy?

    A) Ripening of androecium earlier to gynoecium

    B) Pollen grains of one flower reaching the stigma of another flower present on the same plant

    C) Pollen grains of one flower, reaching the stigma of another flower present on a different plant of the same species

    D) The inability of pollen to germinate on the stigma of the same flower

    View Answer play_arrow
  • question_answer146) Which one of the following is useful in identifying the different strains of causal microbe of an infectious disease?

    A) Colchicine

    B) Agrobacterium

    C) Complementary DNA

    D) Crystal violet

    View Answer play_arrow
  • question_answer147) The photoperiodic cycles of 6 hours of dark period and 18 hours of light period induce flower formation in

    A) Xanthium

    B) tobacco

    C) soybean

    D) Beta vulgaris

    View Answer play_arrow
  • question_answer148) When one molecule of glucose is completely oxidised during aerobic respiration, how many molecules of carbon dioxide are released due to tricarboxylic acid cycle?

    A) One

    B) Two

    C) Three

    D) Four

    View Answer play_arrow
  • question_answer149) Which of the following reaction does not take place in the cell organelle, that is referred to as power house of the cell?

    A) Glycine decarboxylation

    B) Glyceraldehyde 3-phosphate drogenation

    C) Fumaric acid hydration

    D) Cytochrome oxidation

    View Answer play_arrow
  • question_answer150) Swollen and spongy petioles are characteristic of

    A) Trapa

    B) Wolffia

    C) Ceratophyllum

    D) Limnophila

    View Answer play_arrow
  • question_answer151) A plant with low \[C{{O}_{2}}\] compensation point is

    A) Atriplex patula

    B) Leucopoa kingu

    C) Gossypium hirsutum

    D) Tidestromia oblongifolia

    View Answer play_arrow
  • question_answer152) During which phase of their replication, the bacteriphages release lysozyme?

    A) Adsorption

    B) Maturation

    C) Eclipse

    D) Penetration

    View Answer play_arrow
  • question_answer153) In Pheretima, the number of ring vessels per segment in 12th and 13th segment, is

    A) 10 pairs

    B) 10 pairs

    C) 12 pairs

    D) 24 pairs

    View Answer play_arrow
  • question_answer154) A couple whose sons are colour blind with AB blood group, identify the parent from the following.

    A) Mother colourblind with blood group-A and father normal with blood group-B

    B) Mother normal with blood group-A and father colourblind with blood group-B

    C) Mother colourblind with blood group-B and father normal with blood group-B

    D) Mother normal with blood group-A and father colourblind with blood group-B

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  • question_answer155) An example of vestigial organ is

    A) wing of ApteryJc

    B) tail of Macropus

    C) eyelid of man

    D) flipper of whale

    View Answer play_arrow
  • question_answer156) In a cross between individuals with genotypes TrRr, if the resulting number of off springs is 16, identify the number of genotypes with TtRr and TtRR amongst them.

    A) 1 and 2

    B) 2 and 3

    C) 3 and 1

    D) 4 and 2

    View Answer play_arrow
  • question_answer157) During oxygen transport, the oxyhaemoglobin at the tissue level liberates oxygen to the cells due to

    A) \[{{O}_{2}}\] concentration is high and \[C{{O}_{2}}\] is low

    B) \[{{O}_{2}}\] concentration is low and \[C{{O}_{2}}\] is high

    C) \[{{O}_{2}}\] tension is low and \[C{{O}_{2}}\] tension is high

    D) \[{{O}_{2}}\] tension is high and \[C{{O}_{2}}\] tension is low

    View Answer play_arrow
  • question_answer158) The gestation period of cow is

    A) 30 days

    B) 270 days

    C) 280 days

    D) 300 days

    View Answer play_arrow
  • question_answer159) In protein synthesis, the initiator codon is

    A) AAA

    B) AGC

    C) AAT

    D) AUG

    View Answer play_arrow
  • question_answer160) Adaptive radiation is an example of

    A) directional selection

    B) diversifying selection

    C) stabilising selection

    D) sympatric speciation

    View Answer play_arrow
  • question_answer161) What percentage of homozygous \[R{{h}^{-}}\] will be born amongst 4 children couple where the husband is heterozygous for \[R{{h}^{+}}\]and wife is homozygous for \[R{{h}^{-}}\] gene?

    A) 25%

    B) 50%

    C) 75%

    D) 100%

    View Answer play_arrow
  • question_answer162) One of the human diseases due to magnification of heavy metal is

    A) Minimata

    B) asthma

    C) tuberculosis

    D) elephantiasis

    View Answer play_arrow
  • question_answer163) The ears of a mammal living in a cold area were smaller than the one living in a warm area. This is an example of

    A) Bergmans rule

    B) Jordans rule

    C) Aliens rule

    D) Glogers rule

    View Answer play_arrow
  • question_answer164) The growth rate of population stabilises after

    A) logarithmic phase

    B) stationary phase

    C) carrying capacity

    D) negative acceleration phase

    View Answer play_arrow
  • question_answer165) Identify from the following which can give a complementary and palindromic sequence.

    A) 5ATATCC3

    B) 5 CCGAAT 3

    C) 5GAATTCS

    D) 3AGGTTCS

    View Answer play_arrow
  • question_answer166) According to IUGN red list, what is the status of red panda (Athurus fulgens)?

    A) Vulnerable species

    B) Critically endangered species

    C) Extinct species

    D) Endangered species

    View Answer play_arrow
  • question_answer167) In which one pair, both the plants can be vegetatively propagated by leaf pieces?

    A) Bryophyllum and Kalanchoe

    B) Chrysanthemum and Agave

    C) Agave and Kalanchoe

    D) Asparagus and Bryophyllum

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  • question_answer168) G-6-P dehydrogenase deficiency is associated with haemolysis of

    A) lymphocytes

    B) RBCs

    C) platelets

    D) leucocytes

    View Answer play_arrow
  • question_answer169) The name of Norman Borlaug is associated with

    A) green revolution

    B) yellow revolution

    C) white revolution

    D) blue revolution

    View Answer play_arrow
  • question_answer170) Which one of the following makes use of RNA as a template to synthesise DNA?

    A) Reverse transcriptase

    B) DNA dependent RNA polymerase

    C) DNA polymerase

    D) RNA polymerase

    View Answer play_arrow
  • question_answer171) One of the most important function of botanical gardens is that

    A) one can observe tropical plant there

    B) they allow ex situ conservation of germplasm

    C) they provide the natural habitat for wildlife

    D) they provide a beautiful area for recreation

    View Answer play_arrow
  • question_answer172) Protein synthesis in an animal cell occurs

    A) only on the ribosomes present in cytosol

    B) on ribosomes present in cytoplasm as well as in mitochondria

    C) only on ribosomes attached to the nuclear envelope and endoplasmic reticulum

    D) on ribosomes present in the nucleolus as well as in cytoplasm

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  • question_answer173) Which of the following is not true for a species?

    A) Members of a species can interbreed

    B) Variations occurs among members of a species

    C) Each species is reproductively isolated from every other species

    D) Gene flow does not occur between the populations of a species

    View Answer play_arrow
  • question_answer174) Potometer works on the principle of

    A) amount of water absorbed equals the amount transpired

    B) osmotic pressure

    C) root pressure

    D) potential difference between the tip of the tube and that of the plant

    View Answer play_arrow
  • question_answer175) Which of the following is the relatively most accurate method for dating of fossils?

    A) Potassium-argon method

    B) Uranium-lead method

    C) Electron spin resonance method

    D) Radio-carbon method

    View Answer play_arrow
  • question_answer176) During transcription holoenzyme RNA polymerase binds to a DNA sequence and the DNA assumes a saddle-like structure at that point. What is that sequence called?

    A) CAAT box

    B) GGTT box

    C) AAAT box

    D) TATA box

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  • question_answer177) Telomerase is an enzyme, which is a

    A) repetitive DNA

    B) RNA

    C) simple protein

    D) ribonucleoprotein

    View Answer play_arrow
  • question_answer178) Centromere is required for

    A) transcription

    B) crossing over

    C) cytoplasmic cleavage

    D) movement of chromosomes towards poles

    View Answer play_arrow
  • question_answer179) In Ornithine cycle, which of the following wastes are removed from the blood?

    A) Urea and urine

    B) Ammonia and urea

    C) Carbon dioxide and ammonia

    D) Carbon dioxide and urea

    View Answer play_arrow
  • question_answer180) Damage to thymus in a child may lead to

    A) a reduction in haemoglobin content of blood

    B) a reduction in stem cell production

    C) loss of antibody mediated immunity

    D) loss of cell mediated immunity

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  • question_answer181) Biodiversity Act of India was passed by the Parliament in the year

    A) 1996

    B) 1992

    C) 2002

    D) 2000

    View Answer play_arrow
  • question_answer182) During which stage in the complete oxidation of glucose, are the greatest number of ATP molecules formed from ADP?

    A) Conversion of pyruvic acid to acetyl Co-A

    B) Electron transport chain

    C) Glycolysis

    D) Krebs cycle

    View Answer play_arrow
  • question_answer183) A woman with normal vision, but whose father was colourblind, marries a colourblind man. Suppose that the fourth child of this couple was a boy. This boy

    A) must have normal colour vision

    B) will be partially colourblind since he is heterozygous for the colourblind mutant allele

    C) must be colourblind

    D) may be colourblind or may be of normal vision

    View Answer play_arrow
  • question_answer184) Which of the following is geneally used for induced mutagenesis in crop plants?

    A) Alpha particles

    B) X-rays

    C) UV(260nm)

    D) Gamma rays (from cobalt 60)

    View Answer play_arrow
  • question_answer185) Which one of the following depresses brain activity and produces feeling of calmness, relaxation and drowsiness?

    A) Valium

    B) Morphine

    C) Hashish

    D) Amphetamines

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  • question_answer186) Golden rice is transgenic crop of the future with the following improved trait.

    A) High lysine (essential amino acid) content

    B) Insect resistance

    C) High protein content

    D) High vitamin-Acontent

    View Answer play_arrow
  • question_answer187) Photosynthetic Active Radiation (PAR) has the following range of wavelengths.

    A) 400 to 700 nm

    B) 450 to 950 nm

    C) 340 to 450 nm

    D) 500 to 600 nm

    View Answer play_arrow
  • question_answer188) The catalytic efficiency of two different enzymes can be compared by

    A) the \[{{K}_{m}}\] value

    B) the pH optimum value

    C) formation of the product

    D) molecular size of the enzyme

    View Answer play_arrow
  • question_answer189) Which one of the following pairs is mismatched?

    A) Savanna - Acacia trees

    B) Prairie - Epiphytes

    C) Tundra - Permafrost

    D) Coniferous forest - Evergreen tress

    View Answer play_arrow
  • question_answer190) Using imprints from a plate with complete medium and carrying bacterial colonies, you can selected streptomycin resistant mutants prove that such mutations do not originate as adaptation. These imprints need to be used

    A) only on plates with streptomycin

    B) on plates with minimal medium

    C) only on plates without streptomycin

    D) on plates with and without streptomycin

    View Answer play_arrow
  • question_answer191) A patient is generally advised to specially consume more meat, lentils, milk and eggs in diet only, when he suffers from

    A) kwashiorkor

    B) rickets

    C) anaemia

    D) scurvy

    View Answer play_arrow
  • question_answer192) Epithelial cells of the intestine involved in food absorption have on their surface

    A) pinocytic vesicles

    B) phagocytic vesicles

    C) zymogen granules

    D) microvilli

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  • question_answer193) Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example.

    A) Enlargement of body size by swallowing air in puffer fish

    B) Melanism in moths

    C) Poison fangs in snakes

    D) Colour change in Chamaeleon

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  • question_answer194) For retting of jute, the fermenting microbe used is

    A) Helicobactor pylori

    B) methophilic bacteria

    C) Streptococcus lactis

    D) butyric acid bacteria

    View Answer play_arrow
  • question_answer195) From the following statements, select the wrong one

    A) Millipedes have two pairs of appendage in each segment of the body

    B) Prawn has two pairs of antennae

    C) Animals belonging to phylum-Porifera are exclusively marine

    D) Nematocysts are characteristic of phylum-Cnidaria

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  • question_answer196) Nucleotide are building blocks of nucleic acid, nucleotide is a composite molecule formed

    A) (base-sugar-phosphate) n

    B) base-sugar-OH

    C) base-sugar-phosphate

    D) sugar-phosphate

    View Answer play_arrow
  • question_answer197) Which one of the following experiments suggest that simplest living organisms could not have originated spontaneously from non- living matter?

    A) Microbes did not appear in stored meat

    B) Larvae could appear in decaying organic matter

    C) Microbes appeared from unsterilized organic matter

    D) Meat was not spoiled, when heated and kept sealed in a vessel

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  • question_answer198) There exists a close association between the alga and the fungus within a lichen. The fungus

    A) fixes the atmospheric nitrogen for the alga

    B) provides protection, anchorage and absorption for the alga

    C) provides food for the alga

    D) releases oxygen for the alga

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  • question_answer199) A student wishes to study the cells structure under a light microscope having 10X eyepiece and 45X objective. He should illuminate the object by which one of the following colors of light so as to get the best possible resolution?

    A) Yellow

    B) Green

    C) Blue

    D) Red

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  • question_answer200) At what stage of the cell cycle are histone proteins synthesised in a eukaryotic cell?

    A) During entire prophase

    B) During telophase

    C) During S-phase

    D) During \[{{\text{G}}_{\text{2}}}\text{-stage}\]of prophase

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