Solved papers for Haryana PMT Haryana PMT Solved Paper-2006

done Haryana PMT Solved Paper-2006

  • question_answer1) A weight w is suspended from the midpoint of a rope, whose ends are at the same level. In order to make the rope perfectly horizontal, the force applied to each of its ends must be:

    A) less than w

    B) equal to w

    C) equal to 2w

    D) infinitely large

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  • question_answer2) A velocity of a particle at an instant is 10 m/s. After 3 s its velocity will become 16 m/s. The velocity at 2 s, before the given instant will be :

    A) 6 m/s

    B) 4 m/s

    C) 2 m/s

    D) 1m/s

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  • question_answer3) A heavy stone hanging from a massless string of length 15 m is projected horizontally with speed 147 m/ s. The speed of the particle at the point where the tension in the string equals the weight of the particle is?

    A) 10 m/s

    B) 7 m/s

    C) 12 m/s

    D) None of these

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  • question_answer4) When a body moves with constant speed in a circular path, then :

    A) work done will be zero

    B) acceleration will be zero

    C) no force acts on the body

    D) its velocity remains constant

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  • question_answer5) Two stones are projected with same velocity v at an angle \[\theta \] and \[(90-\,\theta )\] . If \[H\,and\text{ }{{H}_{1}}\] are the greatest heights in the two paths, what is the relation between R, H and \[{{H}_{1}}\]?

    A) \[R=4\frac{\sqrt{H{{H}_{1}}}}{{}}\]

    B) \[R=\frac{\sqrt{H{{H}_{1}}}}{{}}\]

    C) \[R=4H{{H}_{1}}\]

    D) None of the above

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  • question_answer6) A body initially at rest is moving with uniform acceleration a. Its velocity after n s is v. The displacement of the body in 2 s is :

    A) \[\frac{2v(n-1)}{n}\]

    B) \[\frac{v(n-1)}{n}\]

    C) \[\frac{v(n+1)}{n}\]

    D) \[\frac{2v(n+1)}{n}\]

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  • question_answer7) The magnetic force on a point charge is \[\overrightarrow{\mathbf{F}}\text{=q(}\overrightarrow{\mathbf{V}}\text{ }\!\!\times\!\!\text{ }\overrightarrow{\mathbf{B}}\text{)}\] Here, \[q\] = electric charge \[\overrightarrow{\mathbf{V}}\]= velocity of point charge \[\overrightarrow{\mathbf{B}}\] = magnetic Held The dimension of \[\overrightarrow{\mathbf{B}}\] is :

    A) \[[ML{{T}^{-1}}A]\]

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

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

    D) none of these

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  • question_answer8) The first diffraction minimum due to single slit diffraction is \[\theta \], for a light of wavelength \[5000\overset{\text{o}}{\mathop{\text{A}}}\,\]. If the width of the slit is \[1\times {{10}^{-4}},\] then the value of \[\text{ }\!\!\theta\!\!\text{ }\] is :

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

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

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

    D) \[15{}^\circ \]

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  • question_answer9) A stone of mass m tied to a string of length \[l\]is rotated in a circle with the other end of the string as the centre. The speed of the stone is v. If the string breaks, the stone will:

    A) move towards the centre

    B) move away from the centre

    C) move along tangent

    D) stop

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  • question_answer10) A_ particle moves with a velocity \[\text{(5}\mathbf{\hat{i}}\text{-3\hat{J}+6\hat{K})}\] m/s under the influence of a constant force \[\overrightarrow{\mathbf{F}}\text{=(10}\mathbf{\hat{i}}\text{+10}\mathbf{\hat{J}}\text{+12}\mathbf{\hat{K}}\text{)}\] instantaneous power applied to the particle is:

    A) 200 J/s

    B) 40J/s

    C) 140 J/s

    D) 170 J/s

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  • question_answer11) The potential energy of a particle of mass 5 kg moving in the \[x-y\] plane is given by \[\text{U=(7x+24y-)J}\text{.x}\,\text{and}\,\text{y}\] being in meter. If the particle starts from rest from origin, then speed of panicle at t = 2 s is:

    A) 5m/s

    B) 14m/

    C) 17.5m/s

    D) 10 m/s

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  • question_answer12) The ratio of radii of gyration of a circular disc and a circular ring of the same radii and same mass about a tangential axis in the plane is :

    A) 1; 2

    B) \[\sqrt{5}:\sqrt{6}\]

    C) 2:3

    D) 2:1

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  • question_answer13) If a particle of mass m is projected at an angle a with the horizontal, then :

    A) the angular momentum remain constant

    B) the linear momentum of particle remains constant

    C) total mechanical energy remains constant in the absence of air resistance

    D) all of the above

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  • question_answer14) A satellite is moving on a circular path of radius r around the earth has a time period T. If its radius slightly increases by \[\Delta r\], the change in its time period is :

    A) \[\frac{3}{2}\left( \frac{T}{r} \right)\Delta r\]

    B) \[\left( \frac{T}{r} \right)\Delta r\]

    C) \[\frac{3}{2}\left( \frac{{{T}^{2}}}{{{r}^{2}}} \right)\Delta r\]

    D) none of these

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  • question_answer15) A particle executes SHM, its time period is 16 s. If it passes through the centre of oscillation the en its velocity is 2m/s at time 2 s. The amplitude will be:

    A) 7.2 m

    B) 4 cm

    C) 6 cm

    D) 0.72m

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  • question_answer16) A simple harmonic oscillator has amplitude A, angular velocity \[\Omega \], and mass m. Then, average energy in one time period will be :

    A) \[\frac{1}{4}m{{\omega }^{2}}{{A}^{2}}\]

    B) \[\frac{1}{4}{{m}^{2}}{{\omega }^{2}}{{A}^{2}}\]

    C) \[{{\omega }^{2}}{{A}^{2}}\]

    D) zero

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  • question_answer17) A particle executes simple harmonic motion with a frequency\[f\]. The frequency with which the potential energy oscillates is :

    A) \[f\]

    B) \[f/2\]

    C) \[2f\]

    D) zero

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  • question_answer18) The wave front due to a source situated at infinity is :

    A) spherical

    B) cylindrical

    C) planar

    D) none of these

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  • question_answer19) An astronaut is approaching the moon. He sends out a radio signal of frequency 5000 MHz and the frequency of echo is different from that of the original frequency by 100 kHz. His velocity of approach with respect to the moon is:

    A) 2km/s

    B) 3km/s

    C) 4km/s

    D) 5km/s

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  • question_answer20) The temperature of \[{{H}_{2}}\] at which the rms velocity of its molecules is seven times the rms velocity of the molecules of nitrogen at 300 K is :

    A) 2100 K

    B) 1700 K

    C) 1350 K

    D) 1050 K

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  • question_answer21) Gas exerts pressure on the walls of the container because :

    A) gas has weight

    B) gas molecules have momentum

    C) gas molecules collide with each other

    D) gas molecules collide with the walls of the

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  • question_answer22) Container The inside and outside temperatures of a refrigerator are 273 K and 303 K respectively. Assuming that refrigerator cycle is reversible, for every joule of work done, the heat delivered to the surrounding will be :

    A) 10 J

    B) 20 J

    C) 30 J

    D) 50 J

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  • question_answer23) In an energy recycling process, X g of steam at 100?C becomes water at 100?C which converts Y g of ice at 0?C into water at 100?C. The ratio of X and Y will be:

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

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

    C) 3

    D) 2

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  • question_answer24) A body at a temperature of \[728{}^\circ C\] and has surface area \[5\text{ }c{{m}^{2}}\], radiates 300 J of energy each minute. The emissivity is : (Given: Boltzmann constant \[\text{=5}\text{.67 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-8}}}\text{W}{{\text{m}}^{\text{2}}}{{\text{K}}^{\text{4}}}\]

    A) e=0.18

    B) e=0.02

    C) e=0.2

    D) e=0.15

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  • question_answer25) If \[\sigma =\]surface charge density, \[\varepsilon =\] electric permittivity, the dimensions of\[\frac{\sigma }{\varepsilon }\] are same as:

    A) electric force

    B) electric field intensity

    C) pressure

    D) electric charge

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  • question_answer26) For circuit the equivalent capacitance between P and Q is:

    A) 6C

    B) 4C

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

    D) \[\frac{6C}{11}\]

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  • question_answer27) A wire has resistance 120. It is bent in the form of a circle. The effective resistance between the two points on any diameter of the circle is :

    A) 12\[\Omega \]

    B) 24\[\Omega \]

    C) 6\[\Omega \]

    D) 3\[\Omega \]

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  • question_answer28) If two identical heaters each rated as (1000W, 220V) are connected in parallel to 220 V, then the total power consumed is :

    A) 200 W

    B) 2500 W

    C) 250 W

    D) 2000 W

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  • question_answer29) In the given figure, the loop is fixed but straight wire can move. The straight wire will:

    A) remain stationary

    B) move towards the loop

    C) move away from the loop

    D) rotates about the axis

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  • question_answer30) At a point on the right bisector of a magnetic dipole, the magnetic :

    A) potential varies as \[\frac{1}{r2}\]

    B) potential is zero at all points on the right bisector

    C) field varies as r3

    D) field is perpendicular to the axis of the dipole

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  • question_answer31) The couple acting on a magnet of length 10 cm and pole strength 15 Am, kept in a field of \[B=2~\times {{10}^{-5}}T,\] at an angle of 30? is :

    A) \[1.5\times {{10}^{-5}}Nm\]

    B) \[1.5\times {{10}^{-3}}Nm\]

    C) \[1.5\times {{10}^{-2}}Nm\]

    D) \[1.5\times {{10}^{-6}}Nm\]

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  • question_answer32) In a step-up transformer, the number of turms in:

    A) primary are less

    B) primary are more

    C) primary and secondary are equal

    D) primary are infinite

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  • question_answer33) If a circuit made up of a resistance \[\Omega \] and inductance 0.01 H, and alternating emf 200 V at SO Hz is connected, then the phase difference between the current and the emf in the circuit is :

    A) \[{{\tan }^{-1}}(\pi )\]

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

    C) \[{{\tan }^{-1}}\left( \frac{\pi }{4} \right)\]

    D) \[{{\tan }^{-1}}\left( \frac{\pi }{3} \right)\]

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  • question_answer34) An AC is represented by e = 220 sin (100 \[\pi \]) t V and is applied over a resistance of 110 \[\Omega \]. The heat produced in 7 min is :

    A) \[11\times {{10}^{3}}cal\]

    B) \[22\times {{10}^{3}}cal\]

    C) \[33\times {{10}^{3}}cal\]

    D) \[25\times {{10}^{3}}cal\]

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  • question_answer35) The wavelength of a radio wave of frequency of 1 MHz is :

    A) 400m

    B) 300m

    C) 350m

    D) 200m

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  • question_answer36) The correct option, if speed of \[\gamma \]-rays, x-rays and micro waves are\[{{\gamma }_{g,}}{{v}_{x}}\]and \[{{v}_{m}}\] respectively will be:

    A) \[{{v}_{g}}>{{v}_{g}}>{{v}_{m}}\]

    B) \[{{v}_{g}}>{{v}_{x}}>{{v}_{m}}\]

    C) \[{{v}_{g}}>{{v}_{x}}>{{v}_{m}}\]

    D) \[{{v}_{g}}>{{v}_{x}}>{{v}_{m}}\]

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  • question_answer37) The electric field E and magnetic field B in electromagnetic waves are:

    A) parallel to each other

    B) inclined at an angle of 45?

    C) perpendicular to each other

    D) opposite to each other

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  • question_answer38) In Youngs double slit experiment, the spacing between the slits is d and wavelength of light used is 6000 ?. If the angular width of a fringe formed on a distant screen is 1?, then value of d is:

    A) 1 mm

    B) 0.05 mm

    C) 0.03 mm

    D) 0.01 mm

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  • question_answer39) Polarisation of light proves :

    A) corpuscular nature of light

    B) quantum nature of light

    C) transverse wave nature of light

    D) longitudinal wave nature of light

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  • question_answer40) In terms of Rydberg constant R, the wave number of the first Balmer line is :

    A) R

    B) 3R

    C) \[\frac{\text{5R}}{\text{36}}\]

    D) \[\frac{\text{8R}}{9}\]

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  • question_answer41) In the nuclear reaction : \[^{\text{2}}\text{H}{{\text{e}}^{\text{4}}}{{\text{+}}_{\text{z}}}{{\text{X}}^{\text{A}}}{{\xrightarrow{{}}}_{\text{z+2}}}{{\text{Y}}^{\text{A+3}}}{{\text{+}}_{\text{z}}}{{\text{M}}^{\text{A }\!\!\!\!\text{ }}}\]where M denotes :

    A) electron

    B) positron

    C) proton

    D) neutron

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  • question_answer42) If the de-Broglie wavelength of a proton is\[{{10}^{-13}}m,\] the electric potential through which it must have been accelerated is :

    A) \[4.07\times {{10}^{4}}V\]

    B) \[8.2\times {{10}^{4}}V\]

    C) \[8.2\times {{10}^{3}}V\]

    D) \[4.07\times {{10}^{5}}V\]

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  • question_answer43) \[n\] alpha particles per second are emitted from N atoms of a radioactive element. The half-life of radioactive element is :

    A) \[\frac{n}{N}s\]

    B) \[\frac{N}{n}s\]

    C) \[\frac{0.693N}{n}s\]

    D) \[\frac{0.693n}{N}s\]

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  • question_answer44) Depletion layer consists of:

    A) electrons

    B) protons

    C) mobile ions

    D) immobile ions

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  • question_answer45) In a semiconductor diode the barrier potential offers opposition to only :

    A) majority carrier in both regions

    B) minority carrier in both regions

    C) free electrons in the \[n\]-region

    D) holes in the \[p\]-region

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  • question_answer46) Maximum entropy will be in which of the following?

    A) Ice

    B) Liquid water

    C) Snow

    D) Water vapours

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  • question_answer47) What is obtained when chlorine is passed in boiling toluene and product is hydrolysed?

    A) o-cresol

    B) p-cresol

    C) 2, 4-dihydroxytoluene

    D) Benzyl alcohol

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  • question_answer48) Which of the following has covalent bond?

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

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

    C) \[NaH\]

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

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  • question_answer49) Which of the following acts as an oxidising as well as reducing agent?

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

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

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

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

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  • question_answer50) What is the oxidation state of P in \[Ba{{({{H}_{2}}P{{O}_{2}})}_{2}}\]?

    A) \[+1\]

    B) \[+2\]

    C) \[+3\]

    D) \[-1\]

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  • question_answer51) Which of the following molecules has pyramidal shape?

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

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

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

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

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  • question_answer52) Maximum number of -hydrogen bonding in is:

    A) \[1\]

    B) \[2\]

    C) \[3\]

    D) \[4\]

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  • question_answer53) Number of isomers possible for \[{{C}_{4}}{{H}_{8}}O\] is

    A) \[3\]

    B) \[4\]

    C) \[5\]

    D) \[6\]

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  • question_answer54) \[{{C}_{6}}{{H}_{5}}-CH=CHCHO\xrightarrow{X}\]\[{{C}_{6}}{{H}_{5}}CH=CHC{{H}_{2}}OH\] In the above sequence X can be:

    A) \[{{H}_{2}}/Ni\]

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

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

    D) both (a) and (b)

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  • question_answer55) For a reaction \[{{H}_{2}}+{{I}_{2}}2HI\] at\[721K\], the value of equilibrium constant is 50. If \[~0.5\text{ }moles\] each of \[{{H}_{2}}\] and \[{{I}_{2}}\] is added to the system, the value of equilibrium constant will be:

    A) \[40\]

    B) \[60\]

    C) \[50\]

    D) \[30\]

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  • question_answer56) Schottky defect generally appears in:

    A) \[NaCl\]

    B) \[KCl\]

    C) \[CsCl\]

    D) all of these

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  • question_answer57) The ability of a given substance to assume two or more crystalline structure is called :

    A) amorphism

    B) isomorphism

    C) polymorphism

    D) isomerism

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  • question_answer58) A cricket ball of \[0.5kg\]is moving with a velocity of \[100m/sec\]. The wavelength associated with its motion is:

    A) \[1/100\text{ }cm\]

    B) \[6.6\times {{10}^{-34}}m\]

    C) \[1.32\times {{10}^{-35}}m\]

    D) \[6.6\times {{10}^{-28}}m\]

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  • question_answer59) Which among the following species have the same number of electrons in its outermost as well as penultimate shell?

    A) \[M{{g}^{2+}}\]

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

    C) \[{{F}^{-}}\]

    D) \[C{{a}^{2+}}\]

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  • question_answer60) \[\Delta {{E}^{o}}\]of combustion of isobutylene is \[-X\text{ }kJ\text{ }mo{{l}^{-1}}\]. The value of \[\Delta {{H}^{o}}\] is:

    A) \[=\Delta {{E}^{o}}\]

    B) \[>\Delta {{E}^{o}}\]

    C) \[=0\]

    D) \[<\Delta {{E}^{o}}\]

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  • question_answer61) At \[{{90}^{o}}C\], pure water has \[{{H}_{3}}{{O}^{+}}\] ion concentration of \[{{10}^{-6}}mol/{{L}^{-1}}\]. The \[{{K}_{\omega }}\] at \[{{90}^{o}}C\] is:

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

    B) \[{{10}^{-14}}\]

    C) \[{{10}^{-12}}\]

    D) \[{{10}^{-8}}\]

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  • question_answer62) A gas is found to have a formula \[{{[CO]}_{x}}\]. If its vapour density is 70, the value of x is:

    A) \[2.5\]

    B) \[3.0\]

    C) \[5.0\]

    D) \[6.0\]

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  • question_answer63) Which of the following represents soap?

    A) \[{{C}_{17}}{{H}_{35}}COOK\]

    B) \[{{C}_{17}}{{H}_{35}}COOH\]

    C) \[{{C}_{15}}{{H}_{31}}COOH\]

    D) \[{{({{C}_{17}}{{H}_{35}}COO)}_{2}}Ca\]

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  • question_answer64) Aspirin in chemically:

    A) methyl benzoate

    B) ethyl salicylate

    C) acetyl salicylic acid

    D) o-hydroxy benzoic acid

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  • question_answer65) Vitamin \[{{B}_{6}}\] is known a:

    A) pyridoxin

    B) thiamine

    C) tocopherol

    D) riboflavin

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  • question_answer66) Which of the following compounds is found abundantly in nature?

    A) Fructose

    B) Starch

    C) Glucose

    D) Cellulose

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  • question_answer67) Synthetic polymer which resembles natural rubber is:

    A) neoprene

    B) chloroprene

    C) glyptal

    D) nylon

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  • question_answer68) Which of the. following is not a nitre-derivative

    A) \[{{C}_{6}}{{H}_{5}}N{{O}_{2}}\]

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

    C)

    D) \[{{C}_{6}}{{H}_{4}}(OH)N{{O}_{2}}\]

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  • question_answer69) The reduction of which of the following compound would yield secondary amine?

    A) Alkyl nitrile

    B) Carbylamine

    C) Primary amine

    D) Secondary nitro compound

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  • question_answer70) Which of the aldehyde is most reactive?

    A) \[{{C}_{6}}{{H}_{5}}-CHO\]

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

    C) \[HCHO\]

    D) All are equally reactive

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  • question_answer71) Which of the following does not contain \[-COOH\] group?

    A) Aspirin

    B) Benzoic acid

    C) Picric acid

    D) All have \[-COOH\] group

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  • question_answer72) Which of the following is dihydric alcohol?

    A) Glycerol

    B) Ethylene glycol

    C) Catechol

    D) Resorcinol

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  • question_answer73) Ethyl alcohol is heated with cone. \[{{H}_{2}}S{{O}_{4}}\]. The product formed is:

    A) \[C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-O{{C}_{2}}{{H}_{5}}\]

    B) \[{{C}_{2}}{{H}_{6}}\]

    C) \[{{C}_{2}}{{H}_{4}}\]

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

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  • question_answer74) In the first order reaction, the concentration of the reactants is reduced to 25% in one hour. The half-life period of the reaction is

    A) \[2h\]

    B) \[4h\]

    C) \[1/2h\]

    D) \[1/4h\]

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  • question_answer75) For a reaction \[X(g)\xrightarrow[{}]{}Y(g)+Z(g)\]the half-life period is 10 min. In what period of time would the concentration of X be reduced to 10% of original concentration?

    A) \[20\,min\]

    B) \[33\,min\]

    C) \[15\,min\]

    D) \[25\,min\]

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  • question_answer76) The molar freezing point constant for water is\[{{1.86}^{o}}C/mol\]. If 342 g of cane sugar \[({{C}_{12}}{{H}_{22}}{{O}_{11}})\]is dissolved in 1000 g of water, the solution will freeze at:

    A) \[-{{1.86}^{o}}C\]

    B) \[{{1.86}^{o}}C\]

    C) \[-{{3.92}^{o}}C\]

    D) \[{{2.42}^{o}}C\]

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  • question_answer77) The movement of solvent molecules through a semipermeable membrane is called:

    A) Electrolysis

    B) Electrophoresis

    C) Osmosis

    D) Cataphoresis

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  • question_answer78) Which of the following is a primary halide?

    A) Isopropyl iodide

    B) Secondary butyl iodide

    C) Tertiary butyl bromide

    D) Neo hexyl chloride

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  • question_answer79) A gas is found to have the formula \[{{(CO)}_{n}}\]. If its vapour density is 56, the value of n will be:

    A) \[7\]

    B) \[5\]

    C) \[4\]

    D) \[3\]

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  • question_answer80) Aromatisation of n-heptane by passing over\[(A{{l}_{2}}{{O}_{3}}+C{{r}_{2}}{{O}_{3}})\] catalyst at \[773K\]gives:

    A) benzene

    B) toluene

    C) Mixture of both

    D) Heptylene

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  • question_answer81) \[{{C}_{6}}{{H}_{5}}C{{H}_{3}}\xrightarrow{Cr{{O}_{2}}\,C{{l}_{2}}}Z\]In the given sequence Z is:

    A) benzaldehyde

    B) toluic acid

    C) phenyl acetic acid

    D) benzoic acid

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  • question_answer82) Nitro ethane can exhibit one of the following kind of isomerism:

    A) metamerism

    B) optical activity

    C) tautomerism

    D) position isomerism

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  • question_answer83) A compound has 3 chiral carbon atoms. The number of possible optical isomers it can have:

    A) \[3\]

    B) \[2\]

    C) \[8\]

    D) \[4\]

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  • question_answer84) \[4{{K}_{2}}C{{r}_{2}}{{O}_{7}}\xrightarrow{heat}4{{K}_{2}}Cr{{O}_{4}}+3{{O}_{2}}+X\] heat In the above reaction X is:

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

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

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

    D) \[Cr{{O}_{5}}\]

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  • question_answer85) The co-ordination number and oxidation number of X in the following compound\[[X\,(S{{O}_{4}})\,{{(N{{H}_{3}})}_{5}}]Cl\]will be:

    A) \[10\] and \[3\]

    B) \[2\] and \[6\]

    C) \[6\] and \[3\]

    D) \[6\] and \[4\]

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  • question_answer86) In the electrolysis of water one faraday of electrical energy would evolve:

    A) \[1mole\]of oxygen

    B) 1 gram-atom of oxygen

    C) 8 g of oxygen

    D) \[22.4\text{ }L\]of oxygen

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  • question_answer87) In which of these process platinum is used as a catalyst?

    A) Oxidation of ammonia to form \[HN{{O}_{3}}\]

    B) Hardening of oils

    C) Production of synthetic rubber

    D) Synthesis of methane

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  • question_answer88) If the half-life of an isotope X is 10 years, its decay constant is:

    A) \[6.932\text{ }y{{r}^{-1}}\]

    B) \[0.6932y{{r}^{-1}}\]

    C) \[0.06932\text{ }y{{r}^{-1}}\]

    D) \[0.006932\text{ }y{{r}^{-1}}\]

    View Answer play_arrow
  • question_answer89) On strong heating sodium bicarbonate changes into:

    A) sodium monoxide

    B) sodium hydroxide

    C) sodium carbonate

    D) sodium peroxide

    View Answer play_arrow
  • question_answer90) Which of the following is not an ore of magnesium?

    A) Carnallite

    B) Magnesite

    C) Dolomite

    D) Gypsum

    View Answer play_arrow
  • question_answer91) Sunnhemp is obtained from :

    A) Crotolaria juncea

    B) Linum usitatiseimum

    C) Corchorus capsularis

    D) None of the above

    View Answer play_arrow
  • question_answer92) The enzyme involved in fixation of \[C{{O}_{2}}\] in \[{{C}_{4}}\] plants is :

    A) PEP carboxylase

    B) RuDP carboxylase

    C) RuDP oxydase

    D) both (a) and (b)

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  • question_answer93) Vegetative reproduction in Cycas occur by :

    A) bulbils

    B) sporophylls

    C) fission

    D) scale leaves

    View Answer play_arrow
  • question_answer94) Symbiotic relationship between blue-green algae and fungus is called :

    A) mycorrhiza

    B) lichen

    C) bryophyta

    D) gymnosperm

    View Answer play_arrow
  • question_answer95) Asafoetida (heeng) obtains from :

    A) root secretion

    B) leaf

    C) seed

    D) fruit

    View Answer play_arrow
  • question_answer96) Which plant hormone promotes seed, bud dormancy and causes stomatal closure?

    A) IAA

    B) Abscisic acid

    C) GAI

    D) Cytokinin

    View Answer play_arrow
  • question_answer97) Viscum album grows on trees. This is an example of:

    A) symbiosis

    B) parasitism

    C) commensalism

    D) predation

    View Answer play_arrow
  • question_answer98) In addition to absence of chlorophyll what is the other difference between fungi and higher plants?

    A) Type of nutrition and composition of cell wall

    B) Cell type

    C) Nucleus

    D) Reproduction

    View Answer play_arrow
  • question_answer99) Ozone layer is depleted by :

    A) \[S{{O}_{2}},\text{ }N{{O}_{3}}\]

    B) \[CFC,\text{ }C{{H}_{4}},\text{ }{{N}_{2}}O\]

    C) \[CO,\text{ }C{{H}_{4}},\text{ }{{\text{O}}_{2}}\]

    D) \[N{{O}_{2}},\text{ }C{{O}_{2}}\]

    View Answer play_arrow
  • question_answer100) Which is an electron carrier common to both photosynthesis and respiration?

    A) Cytochrome

    B) Phytochrome

    C) Phaophytin

    D) Plastocynin

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  • question_answer101) Hesperidium of orange is a modification of:

    A) berry

    B) drupe

    C) pome

    D) aggregate fruit

    View Answer play_arrow
  • question_answer102) Quinine used for treatment of malarial fever extrected from :

    A) Atropa belladona

    B) Cinchona officinalis

    C) Aconitum napellus

    D) Rauwolffia serpentine

    View Answer play_arrow
  • question_answer103) Larger nucleus in a pollen grain is :

    A) tube nucleus

    B) sperm nucleus

    C) generative nucleus

    D) none of the above

    View Answer play_arrow
  • question_answer104) A pollutant can be best defined as it:

    A) has natural geochemical cycles

    B) changes homeostasis of environment

    C) disturb natural flora of a place

    D) become stabilized in ecosystem forever

    View Answer play_arrow
  • question_answer105) Enveloped virus enters into host cell by:

    A) injection own nucleic acid inside host cell

    B) by contact with cell receptor and endocytosis

    C) by phagocytosis

    D) fusion with the plasma membrane of host

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  • question_answer106) Most diverse organism of an ecosystem is :

    A) producer

    B) consumer

    C) decomposer

    D) carnivores

    View Answer play_arrow
  • question_answer107) Large size of pinae in animals of warm region in comparision to animal of cold region is due to law of:

    A) Dollos law

    B) Glogers law

    C) Copes law

    D) Allens rule

    View Answer play_arrow
  • question_answer108) Carthamus belong to family :

    A) Compositae

    B) Gramineae

    C) Liliaceae

    D) Solanaceae

    View Answer play_arrow
  • question_answer109) Restriction endonuclease cuts :

    A) one strand of DNA at specific site

    B) both strand of DNA

    C) both stands of DNA at any site

    D) single strand of RNA

    View Answer play_arrow
  • question_answer110) Photosynthetic products translocated in the form of:

    A) glucose

    B) sucrose

    C) maltose

    D) starch

    View Answer play_arrow
  • question_answer111) Raphides are crystals of:

    A) calcium carbonate

    B) calcium oxalate

    C) magnecium carbonate

    D) magnecium oxalate

    View Answer play_arrow
  • question_answer112) Number of meiosis for formation of 64 zygote in angiosperm is 80 but in gymnosperms number of meiosis for formation of 64 zygotes will:

    A) 40

    B) 80

    C) 160

    D) 20

    View Answer play_arrow
  • question_answer113) Catalytic converter in vehicle is used for controling :

    A) air pollution

    B) water pollution

    C) radioactive pollution

    D) soil pollution

    View Answer play_arrow
  • question_answer114) Monothecous anther is the characteristic of :

    A) Malvaceae

    B) Liliaceae

    C) Brassicaceae

    D) Solanaceae

    View Answer play_arrow
  • question_answer115) The onagrad type embryo development is found in:

    A) Solanum

    B) Capsella

    C) Lilium

    D) Hibiscus

    View Answer play_arrow
  • question_answer116) Rauwolfin obtains from which part of the plant?

    A) Stem

    B) Root

    C) Fruit

    D) Leaf

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  • question_answer117) Which type of placentation is -found in family Fabaceae?

    A) Axile

    B) Marginal

    C) Perietal

    D) Basal

    View Answer play_arrow
  • question_answer118) In meiotic division the DNA synthesis takes place in :

    A) S-phase

    B) S-phase or leptotene phase

    C) M-phase and zygotene

    D) all of the above

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  • question_answer119) Thigmotropism occur due to the :

    A) light

    B) contact

    C) temperature

    D) pressure

    View Answer play_arrow
  • question_answer120) The maximum amount of calcium pectate is present in :

    A) primary cell wall

    B) secondary cell wall

    C) middle lamella

    D) cell membrane

    View Answer play_arrow
  • question_answer121) The special structure present in \[{{C}_{4}}\] plants is:

    A) thin cuticle

    B) multi layered epidermis

    C) kranz type body

    D) one layered epidermis

    View Answer play_arrow
  • question_answer122) White rust of Brassica is caused by :

    A) Albugo Candida

    B) Ustilago

    C) Phytophthora

    D) none of these

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  • question_answer123) Function of rough endoplasmic reticulum is :

    A) fat synthesis

    B) protein synthesis

    C) starch synthesis

    D) autolysis

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  • question_answer124) Which one of the following is a viral causing disease?

    A) Leaf curl of papaya

    B) Red rot of sugarcane

    C) Black rust of wheat

    D) Late blight of potato

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  • question_answer125) Tetradynamous androecium is found in :

    A) mustard

    B) onion

    C) tomato

    D) sunflower

    View Answer play_arrow
  • question_answer126) In mitochondria, enzymes responsible for Krebs cycle are present in:

    A) matrix

    B) inner membrane

    C) outer membrane

    D) both (b) and (c)

    View Answer play_arrow
  • question_answer127) In ferns and mosses, movement of antherozoids towards female component is called :

    A) phototaxis

    B) chemotaxis

    C) hydrotropism

    D) thigmotropism

    View Answer play_arrow
  • question_answer128) Plasmid is a :

    A) fungus

    B) Plasrid

    C) pan of plasma membrane

    D) extra chromosomal DNA in bacterial cell

    View Answer play_arrow
  • question_answer129) The reason for apical dominance is:

    A) ethylene

    B) auxin

    C) cytokinin

    D) gibberellins

    View Answer play_arrow
  • question_answer130) A plant bearing different type of leaves is called:

    A) heierophylly

    B) heterotrophy

    C) heterozygosity

    D) heteronasty

    View Answer play_arrow
  • question_answer131) Avena curvature test is a bioassay for examining the activity of:

    A) auxins

    B) gibberellins

    C) cytokinins

    D) ethylene

    View Answer play_arrow
  • question_answer132) What is common between chloroplast chromoplasts and leucoplasts?

    A) Presenece of pigments

    B) Possession of thylakoids and grana

    C) Storage of starch, proteins and lipids

    D) Ability to multiply by a fission-like process

    View Answer play_arrow
  • question_answer133) Plants of which one of the following groups of genera are pollinated by the same agency ?

    A) Triticum, mussanda, Zea mays

    B) Kadam Cannabis

    C) Salvia, Calotropis. Rafflesia

    D) Salvia., Pinus, Ophrys

    View Answer play_arrow
  • question_answer134) The montreal protocol refers to :

    A) persistent organic pollutants

    B) global warming and climate change

    C) substances that deplete the ozone layer

    D) biosafety genetically modified organisms

    View Answer play_arrow
  • question_answer135) Keystone species deserve protection because these :

    A) are capable of surviving in harsh environmental condition

    B) indicate presence of certain minerals in the soil

    C) have become rare due to over exploitation

    D) play in important role in supporting other species

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  • question_answer136) Chief cell of gastric gland are :

    A) simple tubular

    B) coiled tubular

    C) branched tubular

    D) compound tubular

    View Answer play_arrow
  • question_answer137) Antennae of cockroach function as :

    A) tactile and sensory receptor

    B) gustatory receptor

    C) auditor) recepror

    D) olfactory receptor

    View Answer play_arrow
  • question_answer138) Diabetes insipedus is caused by the deficiency of hormone:

    A) insulin

    B) vasopressin

    C) glucagon

    D) oxytocin

    View Answer play_arrow
  • question_answer139) Type of sexual reproduction in protists, bearing diploid chromosome is :

    A) zygotic meiosis

    B) binary fission

    C) cyst formation

    D) gametangial meiosis

    View Answer play_arrow
  • question_answer140) Glomerular area of adrenal cortex is responsible for:

    A) water and electrolyte balance

    B) carbohydrate rpccabolism

    C) steroid and hormone secretion

    D) blood pressure

    View Answer play_arrow
  • question_answer141) Down syndrome is due to:

    A) trisomy of 13th chromosome

    B) non- disjunction of 21st chromosome

    C) trisomy of 18th chromosome

    D) fusion of normal sperm with egg having 2X

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  • question_answer142) Marine teleost fishes excrete :

    A) uric acid

    B) ammonia

    C) urea

    D) none of these

    View Answer play_arrow
  • question_answer143) Part of nephron impermeable to salt:

    A) distal convoluted tubules

    B) descending limb of loop of Henle

    C) assending limb of loop of Henle

    D) collecting duct

    View Answer play_arrow
  • question_answer144) Nodes of Ranvier are found in :

    A) non myelinated nerve fibres

    B) myelinated nerve fibres

    C) both (a) and (b)

    D) none of the above

    View Answer play_arrow
  • question_answer145) Myxoedema is a disorsder of:

    A) parathyroid gland

    B) adrenal gland

    C) pituitary gland

    D) thyroid gland

    View Answer play_arrow
  • question_answer146) SA node is located in :

    A) lower lateral wall of right atrium

    B) upper lateral wall of right atrium

    C) upper lateral wall of left atrium

    D) lower kitcral wall of left atrium

    View Answer play_arrow
  • question_answer147) Allergencs are:

    A) infectious and increases secretion of IgE

    B) non infectious and increases secretions of IgE

    C) infectious and increases secretion of IgG

    D) noninfectious and increases secretion IgM

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  • question_answer148) Mouth part of housefly are :

    A) siphoning type

    B) sponging type

    C) biting and chewing

    D) piercing and sucking

    View Answer play_arrow
  • question_answer149) Nissls granules are present in :

    A) RBC

    B) WBC

    C) Both (a) and (b)

    D) nerve cells

    View Answer play_arrow
  • question_answer150) Human dental formula is :

    A) \[\frac{3142}{3143}\]

    B) \[\frac{1003}{0003}\]

    C) \[\frac{2123}{2123}\]

    D) \[\frac{2143}{3143}\]

    View Answer play_arrow
  • question_answer151) Vitamin\[-{{B}_{12}}\] is available to ruminants by :

    A) plants

    B) micro-organisms in caecum

    C) animals

    D) all of the above

    View Answer play_arrow
  • question_answer152) Which is symbiont inside human intestine?

    A) Streptococcus pneumonia

    B) Neisseria meningitides

    C) E. coli

    D) Treponema pallidum

    View Answer play_arrow
  • question_answer153) Human population growth is :

    A) lag

    B) stationary

    C) exponential

    D) none of these

    View Answer play_arrow
  • question_answer154) Maximum noise permissible during day time in residential areas :

    A) 75 dB

    B) 55 dB

    C) 65 dB

    D) 45 dB

    View Answer play_arrow
  • question_answer155) Trigeminal nerve m frog is of:

    A) 4th

    B) 5th

    C) 8th

    D) 9th

    View Answer play_arrow
  • question_answer156) Male and female cockroach is differs due to presence of absence of :

    A) anal cerci and anal style

    B) anal cerci

    C) anal style

    D) anal sitae

    View Answer play_arrow
  • question_answer157) Addison of which elements in water speed up the metamorphosis in frog tadpole larva?

    A) \[{{\text{I}}_{\text{2}}}\]

    B) K

    C) Na

    D) Cl

    View Answer play_arrow
  • question_answer158) Adrenaline and nor-adrenaline are hormones and acts as :

    A) energy producing agent

    B) food storage material

    C) neuro-transmitter

    D) energy storing substances

    View Answer play_arrow
  • question_answer159) Largest muscle in the human body is :

    A) sartorius

    B) gluteus

    C) stapedius

    D) masseter

    View Answer play_arrow
  • question_answer160) Blood vascular system of earthworm is :

    A) open type with Hb in RBC

    B) open type with Hb in plasma

    C) closed type with Hb in RBC

    D) closed type with Hb in plasma

    View Answer play_arrow
  • question_answer161) Which types of cells absent in sponges?

    A) Trophocytes

    B) Myocytes

    C) Archeocytes

    D) Cnidocytes

    View Answer play_arrow
  • question_answer162) Third moulting in Ascari.s larva takes place in :

    A) lung

    B) liver

    C) heart

    D) intestine

    View Answer play_arrow
  • question_answer163) Liver and pancreas is derivative of:

    A) ectoderm

    B) endoderm

    C) ectoderm and mesoderm

    D) ectoderm and endoderm

    View Answer play_arrow
  • question_answer164) An important evidence in favour of organic evolution is the occurrence of:

    A) homologous and vestigial organs

    B) analogous and vestigial organs

    C) homologous organs only

    D) homologous and analogous organs

    View Answer play_arrow
  • question_answer165) Which one of the following is not a living fossil?

    A) King crab

    B) Sphenodon

    C) Archaeopteryx

    D) Peripatus

    View Answer play_arrow
  • question_answer166) Which one of the following is a matching set of a phylum and its three examples?

    A) Cnidaria - Bonellia, Physalia, Aurelia

    B) Platyhelminthes - Planaria, Schistosoma, Enterobius

    C) Mollusca - Loligo, Teredo, Octopus

    D) Porifera - Spongilla, Euplectella, Pennatula

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  • question_answer167) In Amoeba, osmoregulation takes place by :

    A) contractile vacuole

    B) ectoplasm

    C) pseudopodia

    D) hyaloplasm

    View Answer play_arrow
  • question_answer168) The infective stage ofPlasmodium in human is:

    A) sporozoite

    B) trophozoite

    C) gametocyte

    D) merozoite

    View Answer play_arrow
  • question_answer169) Chitin as exoskeleton found in :

    A) Periplaneta

    B) Ascaris

    C) Pheretima

    D) Hydra

    View Answer play_arrow
  • question_answer170) Pseudocoel is present in :

    A) Periplaneta

    B) Ascaris

    C) Pheretima

    D) Hydra

    View Answer play_arrow
  • question_answer171) Metameric segmentation is the main feature of:

    A) Annelida

    B) Echinodermata

    C) Arthropoda

    D) Coelenterata

    View Answer play_arrow
  • question_answer172) Nemaroblasts are formed by ;

    A) interstitial cells

    B) glands cells

    C) mesoepithelial cells

    D) nerve cells

    View Answer play_arrow
  • question_answer173) Which is not correct for birds?

    A) Exothermic

    B) Pneumatic bones

    C) Lung with air sacs

    D) Amniotes

    View Answer play_arrow
  • question_answer174) Which character is not same in Aves and mammals?

    A) Single systemic arch

    B) Metanephric kidney

    C) Seven cervical vertebrae

    D) Homeotherms

    View Answer play_arrow
  • question_answer175) Solenocytes and nephridia are respectively found in :

    A) Platyhelminth and Annelids

    B) Annelids and Nematoda

    C) Cendaria and Mollusca

    D) Mollusca and Echinodermata

    View Answer play_arrow
  • question_answer176) Post ganglionic nerve fibres of sympathetic system are :

    A) adrenergic

    B) cholinergic

    C) both (a) and (b)

    D) none of these

    View Answer play_arrow
  • question_answer177) Which is not used up in human body?

    A) Calcium

    B) Phosphorus

    C) Zinc

    D) Barium

    View Answer play_arrow
  • question_answer178) Ichthyophis belongs to:

    A) Mammalia

    B) Reptilia

    C) Amphibia

    D) Aves

    View Answer play_arrow
  • question_answer179) The supporting and nutritive cells found in the brain are :

    A) ependymal cells

    B) microglia

    C) astrocytes

    D) oligodendrocytes

    View Answer play_arrow
  • question_answer180) Prolonged deficiency of thiamine in human diet may lead to :

    A) pellegra

    B) beri-beri

    C) anaemia

    D) Haemorrhage

    View Answer play_arrow

   

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