Solved papers for Uttarakhand PMT Uttarakhand PMT Solved Paper-2007

done Uttarakhand PMT Solved Paper-2007

  • question_answer1) In the relation V = \[V=\frac{\pi p{{r}^{4}}}{8\eta l}\] where the symbols have their usual meanings, the dimensions of V are

    A) \[[{{M}^{0}}{{L}^{3}}{{T}^{0}}]\]

    B) \[[{{M}^{0}}{{L}^{3}}{{T}^{-1}}]\]

    C) \[[{{M}^{0}}{{L}^{-3}}T]\]

    D) \[[M{{L}^{3}}{{T}^{0}}]\]

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  • question_answer2) A point moves such that its displacement as a function of time is given by \[{{x}^{2}}={{t}^{2}}+1.\] Its acceleration at time t is

    A) \[\frac{1}{{{x}^{4}}}\]

    B) \[\frac{t}{{{x}^{2}}}\]

    C) \[\frac{t}{x}-\frac{{{t}^{2}}}{{{x}^{3}}}\]

    D) \[\frac{1}{x}-\frac{t}{{{x}^{2}}}\]

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  • question_answer3) The angle of projection for which the horizontal range and the maximum height of the projectile are equal is

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

    B) \[\text{ }\!\!\theta\!\!\text{ =ta}{{\text{n}}^{-1}}(4)\]

    C) \[\text{ }\!\!\theta\!\!\text{ =ta}{{\text{n}}^{-1}}(0.25)\]

    D) none of these

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  • question_answer4) A body of mass 10 kg falls from a height of 5 m (g = 10 m/s) and is stopped within one-tenth of a second on the ground. The force of interaction is

    A) 100 N

    B) zero

    C) 1000 N

    D) 1100N

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  • question_answer5) Two bodies, having masses in the ratio 1:4, have kinetic energies in the ratio 4:1. The ratio of their linear momentum is

    A) 1 : 1

    B) 1 : 2

    C) 2 : 1

    D) 1 : 4

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  • question_answer6) A mass m slides from rest down the surface of a frictionless hemispherical bowl of radius r from the highest point A. The velocity of mass when it reaches the bottom is

    A) \[\sqrt{2gr}\]

    B) \[\sqrt{mgr}\]

    C) 2mgr

    D) \[gr\]

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  • question_answer7) An engine develops 20 HP. When rotating at a speed of 1800 rev/min. The torque that it delivers is

    A) 400 N-m

    B) 60N-m

    C) 40 N-m

    D) 80 N-m

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  • question_answer8) How much deep inside the earth (radius R) should a mango, so that his weight becomes one-fourth of that on earths surface?

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

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

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

    D) None of these

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  • question_answer9) If the speed of light were \[\frac{2}{3}\] of its present value, the energy released in a given atomic explosion will be decreased by a fraction

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

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

    C) \[\frac{5}{9}\]

    D) \[\frac{2}{9}\]

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  • question_answer10) 10. The difference between a photon and neutrino is

    A) the spin of photon is 1 and that of neutrino is \[\frac{1}{2}\] in units of \[\frac{h}{2\pi }\]

    B) the spin of photon is \[\frac{1}{2}\] and that of neutrino is 1 in units of\[\frac{h}{2\pi }\]

    C) both have equal spin but neutrino is electromagnetic in nature

    D) both have unequal spin but neutrino is electromagnetic in nature

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  • question_answer11) Alcohol is more volatile than water, because

    A) its boiling point is lower than water

    B) it is an organic liquid

    C) its freezing point is lower than water

    D) its vapour pressure is 2.5 times greater than water

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  • question_answer12) Certain substance emits wavelengths \[{{\lambda }_{1,}}{{\lambda }_{2,}}{{\lambda }_{3}}\] and \[{{\lambda }_{4,}}\] when it is at a high temperature. When the substance is at a colder temperature, it will absorb only the following wavelengths

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

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

    C) \[{{\lambda }_{1}}\,\text{and}\,{{\lambda }_{2}}\]

    D) \[{{\lambda }_{1,}}{{\lambda }_{2,}}{{\lambda }_{3}}\,\text{and}\,{{\lambda }_{4}}\]

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  • question_answer13) The deflection in a moving coil galvanometer is reduced to half when it is shunted with a coil of resistance S. The resistance of the galvanometer G = 40 \[\Omega .\] The value of Sis

    A) 80\[\Omega .\]

    B) 40\[\Omega .\]

    C) 20\[\Omega .\]

    D) 15\[\Omega .\]

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  • question_answer14) In Ingen-Hausz experiment the wax melts up to 5 cm and 10 cm on bars A and B respectively. The ratio of the thermal conductivities of A and B is

    A) 1 : 2

    B) 1 : 4

    C) 1:8

    D) 1 : 16

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  • question_answer15) A body executes SHM with an amplitude A. Its energy is half kinetic and half potential when the displacement is

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

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

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

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

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  • question_answer16) The period of the simple pendulum in a stationary lift is T. If the lift move upwards with an acceleration g, the period will be

    A) \[\infty \]

    B) \[\sqrt{\frac{3}{5}}T\]

    C) \[\sqrt{\frac{5}{3}}T\]

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

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  • question_answer17) A wave travelling along positive y-axis is given by\[y=A\text{ }sin\]\[(\omega -kx).\] If it is reflected from rigid boundary such that 80% amplitude is reflected, then equation of reflected wave is

    A) \[y=A\sin (\omega t+kx)\]

    B) \[y=-0.8A\sin (\omega t+kx)\]

    C) \[y=0.8A\sin (\omega t+kx)\]

    D) \[y=A\sin (\omega t+0.8\,kx)\]

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  • question_answer18) The surface charge density of the earth is

    A) \[{{10}^{-9}}c{{m}^{-2}}\]

    B) \[{{10}^{-6}}c{{m}^{-2}}\]

    C) \[-{{10}^{-9}}c{{m}^{-2}}\]

    D) \[-100\text{ }c{{m}^{-2}}\]

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  • question_answer19) The work done in increasing the voltage across the plates of a capacitor from 5V to 10 V is W. The work done in increasing the voltage from 10 V to 15V will be

    A) \[W\]

    B) \[\frac{4W}{3}\]

    C) \[\frac{5W}{3}\]

    D) \[2W\]

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  • question_answer20) The current flowing in the given circuit is 0.1 A. The potential difference between the points \[x\] and y is

    A) 4.0V

    B) 3.0V

    C) 2.5V

    D) 2.0V

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  • question_answer21) The neutral temperature of a thermocouple is \[300{}^\circ C\]. What is the inversion temperature, if the temperature of cold junction is\[10{}^\circ C\]?

    A) \[590{}^\circ C\]

    B) \[610{}^\circ C\]

    C) \[310{}^\circ C\]

    D) \[290{}^\circ C\]

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  • question_answer22) Two bulbs 100 W, 250 V and 200 W, 250 V are connected in parallel across a 500 V line. Then

    A) 100 W bulb will be fused

    B) 200 W bulb will be fused

    C) both bulbs will be fused

    D) no bulb will be fused

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  • question_answer23) An electron is moving in a circle of radius r in a uniform magnetic field B. Suddenly the field is D reduced to \[\frac{B}{2}.\] The radius of the circle now becomes

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

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

    C) 2r

    D) 4r

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  • question_answer24) If the number of turns per unit length of a coil of solenoid is doubled, the self-inductance of solenoid will be

    A) remain unchanged

    B) be halved

    C) be doubled

    D) becomes four times

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  • question_answer25) A copper ring is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet is

    A) equal to that due to gravity

    B) less than that due to gravity

    C) more than that due to gravity

    D) none of the above

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  • question_answer26) An inductance, a capacitance and a resistance are connected in series across a source of alternating voltage. At resonance, the applied voltage and the current flowing through the circuit will have a phase difference

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

    B) zero

    C) \[\pi \]

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

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  • question_answer27) To which region of electromagnetic spectrum, the frequency 1 GHz corresponding?

    A) Ultraviolet rays

    B) Radiowaves

    C) Visible radiation

    D) X-rays

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  • question_answer28) When an object is moved along the axis of a lens, images three times the size of the object are obtained when the object is at 16 cm and at 8 cm respectively from the lens. The focal length and nature of the lens are

    A) 12 cm, concave

    B) 4 cm, concave

    C) 12 cm, convex

    D) 4 cm, convex

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  • question_answer29) Which one of the following phenomena is used in optical fibres?

    A) Scattering

    B) Successive reflections

    C) Refraction

    D) Total internal reflection

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  • question_answer30) The ratio of specific charge of a proton to that of an a-particle is

    A) 1 : 4

    B) 1: 2

    C) 4: 1

    D) 2 : 1

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  • question_answer31) A metallic surface ejects electrons when exposed to green light of intensity \[I\] but no photoelectrons are emitted when exposed to yellow light of intensity \[I\] It is possible to eject electrons from the same surface by

    A) yellow light of same intensity which is more than \[I\]

    B) green light of any intensity

    C) red light of any intensity

    D) none of the above

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  • question_answer32) In hydrogen spectrum the wavelength of \[{{H}_{\alpha }}\] line is 656 nm, where as in the spectrum of a distant galaxy, \[{{H}_{\alpha }}\]line wavelength is 706 nm. Estimated speed of galaxy with respect to earth is

    A) \[2\times {{10}^{8}}m/s\]

    B) \[2\times {{10}^{7}}m/s\]

    C) \[2\times {{10}^{6}}m/s\]

    D) \[2\times {{10}^{5}}m/s\]

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  • question_answer33) The resistance of a germanium junction diode, whose\[V-I\]is shown in figure is \[\text{(}{{\text{V}}_{\text{k}}}\text{=0}\text{.3}\,\text{V)}\]

    A) \[5\,k\,\Omega \]

    B) \[0.2\,k\,\Omega \]

    C) \[2.3\,k\,\Omega \]

    D) \[\left( \frac{10}{2.3} \right)k\,\Omega \]

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  • question_answer34) A circular loop of radius R carrying current \[I\] lies in \[xy\] plane with its centre at origin. The total magnetic flux through \[x-y\] plane is

    A) directly proportional to \[I\]

    B) directly proportional to R

    C) directly proportional to \[{{R}^{2}}\]

    D) zero

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  • question_answer35) The essential distinction between X-rays and -\[y\]rays is that

    A) \[y\]-rays have smaller wavelength than -rays

    B) \[y\]-rays emanate from nucleus while X-rays emanate from outer part of the atom

    C) \[y\]-rays have greater ionizing power than X-rays

    D) \[y\]-rays are more penetrating than X-rays

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  • question_answer36) A convex mirror is used to form an image of a real object. Then, the incorrect statement is

    A) The image lies between the pole and the focus

    B) The image is diminished in size

    C) The image is erect

    D) The image is real

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  • question_answer37) A vessel is half-filled with a liquid of refractive index \[\mu \]. The other half of the vessel is filled with an immiscible liquid of refractive index 1.5\[\mu \]. The apparent depth of the vessel is 50% of the actual depth. Then \[\mu \] is

    A) 1.4

    B) 1.5

    C) 1.6

    D) 1.67

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  • question_answer38) Which of the following is not a unit of charge?

    A) Faraday

    B) Frankline

    C) Coulomb

    D) Ampere/second

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  • question_answer39) What is maximum height of a stone thrown vertically upward, if its velocity is halved in 1.5s? \[(g=10m/{{s}^{2}})\]

    A) 20m

    B) 25m

    C) 30m

    D) 45m

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  • question_answer40) In the Boolean algebra A B is same as

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

    B) \[A.B\]

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

    D) \[A+B\]

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  • question_answer41) Elements having the same number of nucleons and different number of protons are

    A) isotones

    B) positrons

    C) isotopes

    D) isobars

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  • question_answer42) Acetic acid exists in benzene solution in the dimeric form. In an actual experiment the vant Hoff factor was found to be 0.52. Then the degree of dissociation of acetic acid is

    A) 0.48

    B) 0.88

    C) 0.96

    D) 0.52

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  • question_answer43) The number of d-electron in\[F{{e}^{2+}}\](at. no. of \[Fe=26\]) is not equal to that of the

    A) p-electrons in Ne (at. no. =10)

    B) s-electrons in Mg (at. no. =12)

    C) d-electrons in Fe

    D) p-electrons in\[C{{l}^{-}}\]

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  • question_answer44) How many number of atoms are there in a cube based unit cell having one atom on each comer and two atoms on each body diagonal of cube?

    A) 8

    B) 6

    C) 4

    D) 9

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  • question_answer45) Which of the following substances has the highest melting point?

    A) \[NaCl\]

    B) \[KCl\]

    C) \[MgO\]

    D) \[BaO\]

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  • question_answer46) Of the following reactions, only one is a redox reaction identify it.

    A) \[Ca{{(OH)}_{2}}+2HCl\xrightarrow[{}]{{}}CaC{{l}_{2}}+2{{H}_{2}}O\]

    B) \[BaC{{l}_{2}}+MgS{{O}_{4}}\xrightarrow[{}]{{}}BaS{{O}_{4}}+MgC{{l}_{2}}\]

    C) \[2{{S}_{2}}O_{7}^{2-}+{{H}_{2}}O\xrightarrow[{}]{{}}4SO_{4}^{2-}+4{{H}^{+}}\]

    D) \[C{{u}_{2}}S+2FeO\xrightarrow[{}]{{}}2Cu+2Fe+S{{O}_{2}}\]

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  • question_answer47) The Nemst equation giving dependence of electrode potential on concentration is

    A) \[E=E{}^\circ +\frac{2.303RT}{nF}\log \frac{[M]}{[{{M}^{n+}}]}\]

    B) \[E=E{}^\circ +\frac{2.303RT}{nF}\log \frac{[{{M}^{n+}}]}{[M]}\]

    C) \[E=E{}^\circ -\frac{2.303F}{nRT}\log \frac{[{{M}^{n+}}]}{[M]}\]

    D) \[E=E{}^\circ -\frac{2.303RT}{nF}\log [{{M}^{n+}}]\]

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  • question_answer48) At high pressures, the compressibility factor\[z\]is equal to

    A) unity

    B) \[1-\frac{Pb}{RT}\]

    C) \[1+\frac{Pb}{RT}\]

    D) zero

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  • question_answer49) A compound contains 69.5% oxygen and 30.5% nitrogen and its molecular weight is 92. The formula of the compound is

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

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

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

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

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  • question_answer50) The reaction\[A\xrightarrow[{}]{{}}B\]follows first order kinetics. The time taken for 0.8 mole of A to produce 0.6 mole of B is 1 h. What is the time taken for conversion of 0.9 mole of A to produce 0.675 mole of B?

    A) 1 h

    B) 0.5 h

    C) 0.25 h

    D) 2h

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  • question_answer51) Which order for ionisation energy is correct?

    A) \[Be<B<C<N<O\]

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

    C) \[Be>B>C>N>O\]

    D) \[B<Be<N<C<O\]

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  • question_answer52) How many grams of\[Ca{{C}_{2}}{{O}_{4}}\] will dissolve in distilled water to make one litre of saturated solution of it? (\[{{K}_{sp}}\] for\[Ca{{C}_{2}}{{O}_{4}}=2.5\times {{10}^{-9}}mo{{l}^{2}}{{L}^{-2}}\])

    A) 0.0064 g

    B) 0.1028 g

    C) 0.1280 g

    D) 0.2056 g

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  • question_answer53) In the extraction of copper from its sulphide ore, the metal is formed by reduction of \[C{{u}_{2}}O\]with

    A) \[FeS\]

    B) CO

    C) \[C{{u}_{2}}S\]

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

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  • question_answer54) Which one of the following substances has the highest proton affinity?

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

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

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

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

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  • question_answer55) 1.520 g of the hydroxide of a metal on ignition gave 0.995 g of oxide. The equivalent weight of metal is

    A) 1.520

    B) 0.995

    C) 19.00

    D) 9.00

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  • question_answer56) Thermite is a mixture of

    A) Fe and\[Al\]

    B) ferric oxide and aluminium powder

    C) barium peroxide and magnesium powder

    D) \[Cu\]and\[Al\]

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  • question_answer57) A molecule\[X{{Y}_{2}}\]contains two a, two n bonds and one lone pair of electron in the valence shell of X. The arrangement of lone pair as well as bond pairs is

    A) square pyramidal

    B) linear

    C) trigonal planar

    D) unpredictable

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  • question_answer58) The maximum oxidation state exhibited by manganese (at. no. = 25) is

    A) +3

    B) +4

    C) +6

    D) +7

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  • question_answer59) Which of the following is a disaccharide?

    A) Cellobiose

    B) Starch

    C) Cellulose

    D) Fructose

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  • question_answer60) In the reaction of p-chlorotoluene with\[KN{{H}_{2}}\]in liq\[N{{H}_{3}},\]the major product is

    A) o-toluidine

    B) m-toluidine

    C) p-toluidine

    D) p-chloroaniline

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  • question_answer61) . Unstable substances exhibit higher radioactivity due to

    A) low p/n ratio

    B) high p/n ratio

    C) \[p/n=1\]

    D) none of these

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  • question_answer62) The pH of a dilute solution of acetic acid was found to be 4.3. The addition of a small crystal of sodium acetate will cause pH to

    A) become less than 4.3

    B) become more than 4.3

    C) remain equal to 4.3

    D) unpredictable

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  • question_answer63) Which of the following is paramagnetic?

    A) \[N{{H}_{2}}OH\]

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

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

    D) \[{{N}_{2}}{{H}_{6}}C{{l}_{2}}\]

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  • question_answer64) Sugar containing an impurity of common salt can be purified by crystallization from

    A) benzene

    B) alcohol

    C) petroleum ether

    D) water

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  • question_answer65) The\[C-H\]and\[C-C\]bond distance are shortest in

    A) methane

    B) ethane

    C) ethene

    D) ethyne

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  • question_answer66) Among the following identify the species with an atom in +6 oxidation state

    A) \[MnO_{4}^{-}\]

    B) \[Cr(CN)_{6}^{3-}\]

    C) \[NiF_{6}^{2-}\]

    D) \[Cr{{O}_{2}}C{{l}_{2}}\]

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  • question_answer67) Which of the following can effectively remove all types of hardness of water?

    A) Washing soda

    B) Soap

    C) Slaked lime

    D) Boiling

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  • question_answer68) The increasing order of dehydration of following is

    A) \[I<II<II<IV\]

    B) \[II<III<IV<I\]

    C) \[I<III<II<IV\]

    D) \[I<IV<II<III\]

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  • question_answer69) The solution of Na in dry ether not only contains\[Na_{slov.}^{+}\]and\[e_{slov.}^{-}\]but also contains \[Na_{slov.}^{-}\]formed by the following disproportionatipn reaction. \[2Na(s)Na_{solv.}^{+}+Na_{solv.}^{-}\] The large sodide ion can be stabilized by making its

    A) cryptand-222

    B) clatherate

    C) complex with saticylaldehyde

    D) complex with acetylacetone

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  • question_answer70) The electronic configurations of the elements X, Y, Z and J are given below. Which element has the highest metallic character?

    A) \[X=2,8,4\]

    B) \[Y=2,8,8\]

    C) \[Z=2,8,8,1\]

    D) \[J=2,8,8,7\]

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  • question_answer71) Aniline reacts with\[NaN{{O}_{2}}\]and\[HCl\]at room temperature to give

    A) nitroaniline

    B) phenol

    C) chloroaniline

    D) diazonium chloride

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  • question_answer72) Which of the following is least soluble in water?

    A) HCHO

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

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

    D) \[{{C}_{6}}{{H}_{5}}COC{{H}_{3}}\]

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  • question_answer73) In the reaction \[C{{H}_{3}}CHO+HCN\xrightarrow[{}]{{}}C{{H}_{3}}CH(OH)CN\] A chiral centre is produced. This product would be

    A) laevo-rotatory

    B) meso-compound

    C) dextro-rotatory

    D) racemic mixture

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  • question_answer74) Which of the following is a primary standard in volumetric analysis?

    A) \[FeS{{O}_{4}}\]

    B) \[FeS{{O}_{4}}{{(N{{H}_{4}})}_{2}}S{{O}_{4}}6{{H}_{2}}O\]

    C) \[NaOH\]

    D) \[HCl\]

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  • question_answer75) In case of halides of\[S,Se,Te\]and\[Po,\]as the size of the halogen increases, the maximum coordination number of the element

    A) decreases

    B) increases

    C) remains unaffected

    D) none of the above

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  • question_answer76) Which of the following has highest dipole moment?

    A) 1,1-dichloroethene

    B) cis-1, 2-dichloroethene

    C) trans-1, 2-dichloroethene

    D) All have same dipole moment

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  • question_answer77) Presence of peroxides in old stocks of ethers can be tested by first treating them with\[F{{e}^{2+}}\]ions and then adding an aqueous solution of

    A) \[KCNS\]

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

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

    D) \[KI\]

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  • question_answer78) The decay constant of\[^{226}Ra\]is\[1.36\times {{10}^{-11}}{{s}^{-1}}\]. A sample of Ra- 226, having an activity of 1.5 \[mCi\]will contain

    A) \[4.0\times {{10}^{18}}atoms\]

    B) \[205\times {{10}^{15}}atoms\]

    C) \[3.5\times {{10}^{7}}atoms\]

    D) \[4.7\times {{10}^{10}}atoms\]

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  • question_answer79) Ammonia is obtained by the action of\[{{H}_{2}}O\]on

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

    B) \[M{{g}_{3}}{{N}_{2}}\]

    C) BN

    D) all of these

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  • question_answer80) Give the IUPAC name of the following \[C{{H}_{3}}\overset{\begin{smallmatrix} S \\ |\,\,| \end{smallmatrix}}{\mathop{C}}\,C{{H}_{2}}COOH\]is

    A) 3-thiabutanoic acid

    B) 3-sulphobutanoic acid

    C) 3-thiobutanoic acid

    D) 3-thioxobutanoic acid

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  • question_answer81) An alcohol on treatment with alkaline \[KMn{{O}_{4}}\]gives a brown precipitate, the alcohol is

    A) \[{{(C{{H}_{3}})}_{3}}COH\]

    B) \[{{({{C}_{2}}{{H}_{5}})}_{3}}COH\]

    C) \[{{({{C}_{2}}{{H}_{5}})}_{2}}C(C{{H}_{3}})OH\]

    D) \[{{(C{{H}_{3}})}_{3}}CC{{H}_{2}}OH\]

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  • question_answer82) The compound, which on reaction with aqueous nitrous acid at low temperature, produces an oily nitrosoamine is

    A) diethylamine

    B) ethylamine

    C) aniline

    D) methylamine

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  • question_answer83) \[[Ag{{(N{{H}_{3}})}_{2}}OH]\]liberates silver when it reacts with

    A) \[HCOOH\]

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

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

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

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  • question_answer84) Methyl n-propyl ketone on oxidation with \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] and\[{{H}_{2}}S{{O}_{4}}\] give mainly

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

    B) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOH+HCOOH\]

    C) \[C{{H}_{3}}COOH+HCOOH\]

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

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  • question_answer85) If\[KMn{{O}_{4}}\]is reduced by oxalic acid in an acidic medium, then oxidation number of Mn changes from

    A) 4 to 2

    B) 6 to 4

    C) +7 to +2

    D) 7 to 4

    View Answer play_arrow
  • question_answer86) 0.01 M solution of\[{{H}_{2}}A\]has pH equal to 4, if \[{{K}_{{{a}_{1}}}}\]for the acid is\[4.45\times {{10}^{-7}},\]the concentration of\[H{{A}^{-}}\]ion in solution would be

    A) 0.01 N

    B) \[4.45\times {{10}^{-5}}\]

    C) \[8.0\times {{10}^{-5}}\]

    D) unpredictable

    View Answer play_arrow
  • question_answer87) The percentage by weight of hydrogen in\[{{H}_{2}}{{O}_{2}}\]is

    A) 5.88

    B) 6.25

    C) 25

    D) 50

    View Answer play_arrow
  • question_answer88) A gas has a characteristic fishy odour and blue colour. It restores the colour of blackened lead paintings. It also bleaches in the absence of moisture. The gas is

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

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

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

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

    View Answer play_arrow
  • question_answer89) A neutral compound with molecular formula \[{{C}_{3}}{{H}_{8}}O\]evolves\[{{H}_{2}}\]when treated with sodium metal and gives iodoform test. The compound is

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

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

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

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

    View Answer play_arrow
  • question_answer90) In second group,\[{{H}_{2}}S\]is passed in the presence of dil.\[HCl\]because

    A) \[HCl\]checks incomplete precipitation of higher group radicals

    B) \[HCl\]checks precipitation of sulphur

    C) both [a] and [b]

    D) none of the above

    View Answer play_arrow
  • question_answer91) The rate of reaction of which of the following is not affected by pressure?

    A) \[PC{{l}_{3}}+C{{l}_{2}}\rightleftharpoons PC{{l}_{5}}\]

    B) \[{{N}_{2}}+3{{H}_{2}}\rightleftharpoons 2N{{H}_{3}}\]

    C) \[{{N}_{2}}+{{O}_{2}}\rightleftharpoons 2NO\]

    D) \[S{{O}_{2}}+{{O}_{2}}\rightleftharpoons 2S{{O}_{3}}\]

    View Answer play_arrow
  • question_answer92) Acidic buffer solution is produced on mixing the following aqueous solutions of

    A) \[N{{H}_{4}}Cl+N{{H}_{4}}OH\]

    B) \[C{{H}_{3}}COONa+C{{H}_{3}}COOH\]

    C) \[NaCl+NaOH\]

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

    View Answer play_arrow
  • question_answer93) For an ideal gas, Joule-Thomson coefficient is

    A) zero

    B) negative

    C) positive

    D) depend on molecular weight

    View Answer play_arrow
  • question_answer94) Benzene on oxidation with\[{{V}_{2}}{{O}_{5}}\]produce

    A) toluene

    B) benzaldehyde

    C) maleic anhydride

    D) benzophenone

    View Answer play_arrow
  • question_answer95) The linkage present in proteins and peptides is

    A) \[-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-\]

    B) \[-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-O-O-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-\]

    C) \[-NH-\]

    D) \[-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-NH\]

    View Answer play_arrow
  • question_answer96) \[RCOCl+{{H}_{2}}\xrightarrow[{}]{Pd/BaS{{O}_{4}}}RCHO+HCl\] This reaction is known as

    A) Rosenmunds reaction

    B) Stephens reaction

    C) Meerwein Ponndorf verley reduction

    D) Clemmensens reduction

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  • question_answer97) Starch is a polymer of

    A) glucose

    B) fructose

    C) both [a] and [b]

    D) none of these

    View Answer play_arrow
  • question_answer98) Ferric alum has the composition \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}.F{{e}_{2}}{{(S{{O}_{4}})}_{3}}.x{{H}_{2}}O\] The value of\[x\]is

    A) 7

    B) 24

    C) 6

    D) 25

    View Answer play_arrow
  • question_answer99) The use of plaster of Paris is in

    A) whitewash

    B) toothpaste

    C) black board chalk

    D) surgery and dentistry

    View Answer play_arrow
  • question_answer100) Nesslers reagent is used for the test of

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

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

    C) \[NH_{4}^{+}\]

    D) \[PO_{4}^{3-}\]

    View Answer play_arrow
  • question_answer101) The book Genera plantarum was written by

    A) Bessey

    B) Hutchinson

    C) Engler and Pranti

    D) Bentham and Hooker

    View Answer play_arrow
  • question_answer102) Which of the following is not a true fish?

    A) Dog fish

    B) Devil fish

    C) Catfish

    D) Sawfish

    View Answer play_arrow
  • question_answer103) During mitosis, the number of chromosomes get

    A) change

    B) no change

    C) may be change if cell is mature

    D) may be change if cell is immature

    View Answer play_arrow
  • question_answer104) During transcription, the DNA site at which RNA polymerase binds is called

    A) promoter

    B) regulator

    C) receptor

    D) enhancer

    View Answer play_arrow
  • question_answer105) Bacteria do not possess

    A) capsule

    B) ribosome

    C) mitochondria

    D) plasma membrane

    View Answer play_arrow
  • question_answer106) Thermal cycler is used in this reaction

    A) radioactivity

    B) enzyme catalysed

    C) chemical reactions

    D) PCR

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  • question_answer107) Sporozoite, infectious stage of Plasmodium parasite contains

    A) two nucleus and a vacuole

    B) one nucleus and several vacuoles

    C) vacuoles and chloroplasts

    D) a nucleus

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  • question_answer108) The shape of chromosome is determined by

    A) centrosome

    B) centromere

    C) chromomere

    D) telomere

    View Answer play_arrow
  • question_answer109) Heteroneries stage is

    A) transformation of sexual individual into asexual

    B) sexually matured with two regions atoke and epitoke

    C) sexually immatured with two regions etoke and epitoke

    D) all of the above

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  • question_answer110) In Funaria, calyptra is derived from

    A) capsule

    B) columella

    C) antheridium

    D) archegonium

    View Answer play_arrow
  • question_answer111) Biologically most resistant plant material is

    A) lignin

    B) cutin

    C) suberin

    D) sporopollenin

    View Answer play_arrow
  • question_answer112) Which of the following techniques other than microscopy is used for the study of cell ?

    A) Plasmolysis

    B) Maceration

    C) Chromatography

    D) Auto-radiography

    View Answer play_arrow
  • question_answer113) Earthworms have no special sense organs. Still they are sensitive to

    A) touch and sound

    B) light and sound

    C) touch, taste and sound

    D) touch, taste and light

    View Answer play_arrow
  • question_answer114) What will be the gametic chromosome number in a cell, if somatic cells have 40 chromosomes ?

    A) 10

    B) 20

    C) 30

    D) 40

    View Answer play_arrow
  • question_answer115) The ATP production in photosynthesis is called

    A) phototropism

    B) phosphorylation

    C) photooxidation

    D) photophosphorylation

    View Answer play_arrow
  • question_answer116) Duramen of heart wood is

    A) region of pericycle

    B) another name of cambium

    C) inner region of secondary wood

    D) outer region of secondary wood

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  • question_answer117) The term heterosis was first used by

    A) Shull

    B) NEBorlaug

    C) MS Swaminathan

    D) RMishra

    View Answer play_arrow
  • question_answer118) The larva of Bombyx mori is

    A) cocoon

    B) nymph

    C) caterpillar

    D) trochophore

    View Answer play_arrow
  • question_answer119) Gemmule formation in sponges is helpful in

    A) sexual reproduction

    B) asexual reproduction

    C) only dissemination

    D) none of the above

    View Answer play_arrow
  • question_answer120) Organs not similar in structure and origin but perform the same function

    A) homologous structures

    B) analogous structures

    C) adaptive structures

    D) variable structures

    View Answer play_arrow
  • question_answer121) In Dryopteris, the opening mechanism of sporangium is effectively operated by

    A) stalk

    B) annulus

    C) stomium

    D) peristome

    View Answer play_arrow
  • question_answer122) Tunica corpus theory is used for

    A) shoot apex

    B) root apex

    C) leaf apex

    D) both [a] and [b]

    View Answer play_arrow
  • question_answer123) The part of earth and atmosphere supporting life is

    A) biota

    B) biome

    C) ecotone

    D) biosphere

    View Answer play_arrow
  • question_answer124) Lendcels and hydathodes are small pores with which of the following common attributes?

    A) They allow exchange of gases

    B) Their opening and closing is not regulated

    C) They always remain closed

    D) They are found on the same organ of plants

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  • question_answer125) Chloragogen cells of earthworms are analogous to vertebrate

    A) lungs

    B) liver

    C) gut

    D) kidney

    View Answer play_arrow
  • question_answer126) Change in one base in mRNA leading to termination of polypeptide is known as which type of mutations?

    A) Sense

    B) None-sense

    C) Gibberish

    D) Framshift

    View Answer play_arrow
  • question_answer127) Taenia solium derives its energy from the breakdown of

    A) nucleic acids

    B) amino acids

    C) glycogen

    D) glycerol

    View Answer play_arrow
  • question_answer128) Which of the following hormone is produced during leaf fall ?

    A) ABA

    B) Cytokinin

    C) Florigen

    D) Vernalin

    View Answer play_arrow
  • question_answer129) Which fish selectively feed on larva of mosquito?

    A) Gambusia

    B) Rohu

    C) Glorias

    D) Exocoetus

    View Answer play_arrow
  • question_answer130) Lomentum is a term used to describe a kind of

    A) fruit

    B) seed

    C) inflorescence

    D) outgrowth from seed

    View Answer play_arrow
  • question_answer131) House-fly possesses

    A) two pairs of wings

    B) one pair of wings

    C) three pairs of wings

    D) none of the above

    View Answer play_arrow
  • question_answer132) Sunken stomata are found in

    A) Nerium

    B) Hydrilla

    C) mango

    D) none of these

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  • question_answer133) Which Fish has an electric organ?

    A) Torpedo

    B) Rhinoceros

    C) Scoliodon

    D) Cat fish

    View Answer play_arrow
  • question_answer134) Three most abundant elements in protoplasm are

    A) carbon, sodium and hydrogen

    B) carbon, hydrogen and \[{{O}_{2}}\]

    C) nitrogen, carbon and \[{{O}_{2}}\]

    D) carbon, phosphorus and oxygen

    View Answer play_arrow
  • question_answer135) Genetically engineered bacteria is used for the production of

    A) thyroxin

    B) human insulin

    C) epinephrine

    D) cortisol

    View Answer play_arrow
  • question_answer136) Inulin is a

    A) lipid

    B) protein

    C) human insulin

    D) polysaccharide

    View Answer play_arrow
  • question_answer137) Jumping genes in maize were discovered by

    A) Hugo de Vries

    B) TH Morgan

    C) Barbara McClintock

    D) Mendel

    View Answer play_arrow
  • question_answer138) Which of the following is not a pentose sugar?

    A) arabinose

    B) xylose

    C) xylulose

    D) mannose

    View Answer play_arrow
  • question_answer139) Nucleolus is the site for the synthesis of

    A) DNA

    B) mRNA

    C) tRNA

    D) ribosomes

    View Answer play_arrow
  • question_answer140) Which of the following statement is not true ?

    A) Animal cells never contain chloroplast unlike many plant cells

    B) Animal cells contain ultrascopic chloroplast while plant cells contain microscopic chloroplast

    C) Plant cells have cellulosic cell wall while animal cells do not

    D) Plant cells have central vacuoles while animal-cells do not

    View Answer play_arrow
  • question_answer141) Which of the following factor controls the human population density ?

    A) Industry

    B) Climate

    C) Communication

    D) Natural resources

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  • question_answer142) Chromosomal aberration is due to

    A) aneuploidy

    B) polyploidy

    C) physical effects

    D) all of these

    View Answer play_arrow
  • question_answer143) What used to described as Nissi granules in a nerve cell are now identified as

    A) cell metabolites

    B) fat granules

    C) ribosomes

    D) mitochondria

    View Answer play_arrow
  • question_answer144) Ageing of an animal body is associated with deterioration in its

    A) connective tissue

    B) glandular tissue

    C) epithelial tissue

    D) both [a] and [b]

    View Answer play_arrow
  • question_answer145) Photochemical smog always contains

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

    B) \[C{{H}_{4}}\]

    C) \[CO\]

    D) \[\text{P}{{\text{O}}_{\text{4}}}\]

    View Answer play_arrow
  • question_answer146) The posterior end of Ancylostoma has

    A) anus

    B) curved tail

    C) bursa

    D) caudal spine

    View Answer play_arrow
  • question_answer147) Quantasomes are found in

    A) mitochondria

    B) chloroplast

    C) lysosome

    D) endoplasmic reticulum

    View Answer play_arrow
  • question_answer148) In Pinus, male cone bears a large number of

    A) ligules

    B) anthers

    C) microsporophylls

    D) megasporophylls

    View Answer play_arrow
  • question_answer149) Hydroponics is a

    A) airless culture

    B) waterless culture

    C) soilless culture

    D) none of these

    View Answer play_arrow
  • question_answer150) Lysosomes are formed by

    A) endoplasmic reticulum

    B) mitochondrion

    C) Golgi membrane

    D) both [a] and [c]

    View Answer play_arrow
  • question_answer151) Nissls granules are characteristic of

    A) muscle tissue

    B) connective tissue

    C) nerve tissue

    D) epithelial tissue

    View Answer play_arrow
  • question_answer152) Gastric vacuoles are analogous to the

    A) peroxisomes

    B) alimentary canal of higher animals

    C) mouth of higher animals

    D) liver of higher animals

    View Answer play_arrow
  • question_answer153) Genetic information is carried by long chain macromolecules made up of

    A) amino acids

    B) nucleotides

    C) chromosomes

    D) enzymes

    View Answer play_arrow
  • question_answer154) Fertilization of ovum in human being occur in

    A) fallopian tube

    B) cervix

    C) fundus

    D) all of these

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  • question_answer155) Which one are correctely matched?

    A) Vitamin-E-tocopherol

    B) Vitamin-D-riboflavin

    C) Vitamin-B-calciferol

    D) Vitamin-A-thiamine

    View Answer play_arrow
  • question_answer156) Believers in spontaneous generation theory assumed that

    A) organisms arose only from other similar organisms

    B) organisms could arise only from air

    C) organisms arose-from non-living material

    D) organisms always arise from air

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  • question_answer157) Half-life period of \[{{C}^{14}}\]is

    A) 500 years

    B) 5000 years

    C) 50 years

    D) \[5\times {{10}^{4}}years\]

    View Answer play_arrow
  • question_answer158) Maximum number of plasmids discovered so far

    A) 50 kilo base

    B) 500 kilo base

    C) 5000 kilo base

    D) 5 kilo base

    View Answer play_arrow
  • question_answer159) The lytic enzymes released by sperm is

    A) acrosome

    B) ligase

    C) androgamone

    D) hyaluronidase

    View Answer play_arrow
  • question_answer160) Transfer of genes from one gene pool to another is called

    A) speciation

    B) genetic drift

    C) gene flow

    D) mutation

    View Answer play_arrow
  • question_answer161) A material which arrests cell division, is obtained from

    A) Crocus

    B) Colchicum

    C) Dalbergia

    D) Chrysanthemum

    View Answer play_arrow
  • question_answer162) Chromosomes in a bacterial cell can be 1-3 in number and

    A) are always circular

    B) are always linear

    C) can be either circular or linear, but never both within the same cell

    D) can be circular as well as linear within the same cell

    View Answer play_arrow
  • question_answer163) Example of an aggregate fruit is

    A) Pyrus mains

    B) Ananas sarivus

    C) Annona squamosal

    D) Arcocarpiis integrifolia

    View Answer play_arrow
  • question_answer164) Identify the edible freshwater teleosts

    A) sharks

    B) rays and skates

    C) Hilsa hilsa

    D) Catla catla

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  • question_answer165) The blood cell which shows phagocytosis is

    A) monocyte

    B) barsophil

    C) eosinophil

    D) platelets

    View Answer play_arrow
  • question_answer166) In angiosperms, which of the following part is triploid ?

    A) Zygote

    B) Endosperm

    C) Archegonia

    D) Coralloid root

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  • question_answer167) Mitochondria are often seen aggregated around

    A) food vacuole

    B) contractile vacuole

    C) water vacuole

    D) all of these

    View Answer play_arrow
  • question_answer168) Addisons disease results from

    A) hypertrophy of gonad

    B) hyposecretion of adrenal cortex

    C) hyperactivity of leydig cells

    D) none of the above

    View Answer play_arrow
  • question_answer169) Main difference between active and passive transport across cell membrane is that

    A) active transport occurs more rapidly than passive

    B) passive transport is non-selective

    C) passive transport is confined to anions and cations

    D) passive transport requires a concentration gradient across the membrane, whereas active transport requires metabolic energy

    View Answer play_arrow
  • question_answer170) Which statement is correct for muscle- contraction ?

    A) Length of H zone decreases

    B) Length of A band decreases

    C) Length of I band remain constant

    D) Length of two Z line increases

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  • question_answer171) Aleurone layer helps in

    A) growth

    B) nutrition

    C) protection

    D) water absorption

    View Answer play_arrow
  • question_answer172) Internal cork disease in apple is due to the deficiency of

    A) iron

    B) copper

    C) boron

    D) phosphorus

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  • question_answer173) When an animal turns sideways to the Sun to get the maximum amount of Sun on its flanks, this is an example of:

    A) motivation

    B) habitation

    C) posture

    D) orientation

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  • question_answer174) The main components of plasma membrane are

    A) lipids and proteins

    B) lipids, proteins and carbohydrates

    C) lipids only

    D) proteins only

    View Answer play_arrow
  • question_answer175) Pollination by insects is called

    A) zoophily

    B) chiropterophily

    C) anemophily

    D) entomophily

    View Answer play_arrow
  • question_answer176) The genetic material in \[\phi \times 174\] is

    A) single stranded DNA

    B) single stranded RNA

    C) double stranded DNA

    D) double stranded RNA

    View Answer play_arrow
  • question_answer177) The pH of stomach ranges between

    A) 7.1 to 8.2

    B) 7.6 to 8.6

    C) 1.5 to 2.0

    D) 6.8 to 7.2

    View Answer play_arrow
  • question_answer178) Removal of ring wood of tissue outside the vascular cambium from the tree trunk kills it because

    A) water cannot move up

    B) food does not travel down and roots become starved

    C) shoot become starved

    D) annual ring are not produced

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  • question_answer179) The high amount of E. coli in water is an indicator of

    A) hardness of water

    B) industrial pollution

    C) sewage pollution

    D) presence of chlorine in water

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  • question_answer180) Which of the following connects glycolysis to Krebs cycle?

    A) Acetyl Co-A

    B) Ribozyme

    C) Cytochrome oxidase

    D) N-acetyl glucosamine

    View Answer play_arrow
  • question_answer181) Which of the following theory explain structure of protoplasm?

    A) Surface tension theory

    B) Colloidal theory

    C) Sol-gel theory

    D) Viscosity theory

    View Answer play_arrow
  • question_answer182) An insect without metamorphosis is

    A) silver Fish

    B) cray fish

    C) bedbug

    D) pediculus

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  • question_answer183) Lichens show

    A) mutualism

    B) commensalism

    C) parasitism

    D) saprophytism

    View Answer play_arrow
  • question_answer184) In which of the following animal anal tail is found?

    A) Earthworm

    B) Lower invertebrates

    C) Scorpion

    D) Snake

    View Answer play_arrow
  • question_answer185) Which of the following statements is true

    A) All enzymes are proteins

    B) All proteins are enzymes

    C) All enzymes are not proteins

    D) All enzymes and hormones are proteins

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  • question_answer186) This is not the cell of areolar tissue

    A) macrophages

    B) Schwann cell

    C) plasma cell

    D) adipose cell

    View Answer play_arrow
  • question_answer187) Anaerobic respiration after glycolysis is called

    A) restoration

    B) fermentation

    C) multiplication

    D) fragmentation

    View Answer play_arrow
  • question_answer188) Portuguese man of war is

    A) Obelia

    B) Pennatula

    C) Coral

    D) Physalia

    View Answer play_arrow
  • question_answer189) In photosynthesis, photolysis of water is useful for

    A) reduction of NADP

    B) oxidation of NADP

    C) oxidation of FAD

    D) none of the above

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  • question_answer190) Liquid food drinking is

    A) imbibition

    B) pinocytosis

    C) phagocytosis

    D) none of these

    View Answer play_arrow
  • question_answer191) Terminating codons are also called

    A) initiating codons

    B) stop signals

    C) central dogma

    D) none of these

    View Answer play_arrow
  • question_answer192) A pome fruit is said to be false because

    A) the pericarp is inconspicuous

    B) the endocarp is cartilagenous

    C) fruit is derived from superior ovary

    D) fruit is present in fleshy edible thalamus

    View Answer play_arrow
  • question_answer193) In photosynthesis, the light energy is utilized in

    A) converting \[ATP\] into \[ADP\]

    B) converting \[\text{C}{{\text{H}}_{\text{3}}}\] into \[{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}}\text{OH}\]

    C) converting \[\text{ADP}\] into \[\text{ATP}\]

    D) converting \[\text{C}{{\text{O}}_{\text{2}}}\] into carbohydrate

    View Answer play_arrow
  • question_answer194) Receptors of sensation produced when a person eats red chillies are located on which part of tongue ?

    A) Tip

    B) Base

    C) Side

    D) None of these

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  • question_answer195) In which of the following haemocyanin pigment is found ?

    A) Annelida

    B) Echinodermata

    C) Insects

    D) Lower invertebrates

    View Answer play_arrow
  • question_answer196) Photosystem-II occurs in

    A) grana

    B) stroma

    C) entire chloroplast.

    D) chloroplast membrane

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  • question_answer197) When a cluster of genes show linkage behaviour they

    A) do not show a chromosome map

    B) show recombination during meiosis

    C) do not show independent assortment

    D) induce cell division

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  • question_answer198) What is the function of centrosome ?

    A) Cell division

    B) Cell plate formation

    C) Cell differentiation

    D) Cell wall formation

    View Answer play_arrow
  • question_answer199) Keratinization of the skin is prevented by

    A) vitamin-A

    B) vitamin-B

    C) vitamin-C

    D) vitamin-D

    View Answer play_arrow
  • question_answer200) Christmas disease is another name for

    A) haemophilia-B

    B) hepatitis-B

    C) Downs syndrome

    D) sleeping sickness

    View Answer play_arrow



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