Solved papers for RAJASTHAN PMT Rajasthan - PMT Solved Paper-2003

done Rajasthan - PMT Solved Paper-2003

  • question_answer1) Plancks constant has the dimensions of:

    A) energy

    B) power

    C) impulse

    D) angular momentum

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  • question_answer2) A particle after starting from rest, experiences constant acceleration for 20 sec. If it covers a distance\[{{S}_{1}}\]in first 10 sec, then the distance covered during next 10 sec will be

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

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

    C) \[3{{s}_{1}}\]

    D) \[4{{s}_{1}}\]

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  • question_answer3) The magnitudes of sum and difference of two vectors arc same then the angle between them is

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

    B) \[40{}^\circ \]

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

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

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  • question_answer4) When two particles each of mass m are dropped from height h and 2h respectively, then the ratio of their times to reach the ground is

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

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

    C) \[1:2\]

    D) \[2:1\]

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  • question_answer5) The escape velocity of a body depends upon

    A) mass of body

    B) mass of earth

    C) speed of light

    D) angle of projection

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  • question_answer6) A capacitor of 100 \[\mu F\]and resistance of 100\[\Omega \] are connected in series with an a. c source of 50 Hz. The phase angle between the current and source voltage is:

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

    B) \[{{\tan }^{-1}}(1/2\pi )\]

    C) \[{{\tan }^{-1}}(\pi /2)\]

    D) \[{{\tan }^{-1}}(2\pi /2)\]

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  • question_answer7) When a horizontal disc is rotated about its vertical axis and sand is dropped on it, then its angular velocity will

    A) decrease

    B) increase

    C) remain constant

    D) first decrease and then increase

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  • question_answer8) The wavelength of light in air and some other medium are respectively \[{{\lambda }_{a}}\]and\[{{\lambda }_{m}}..\]The refractive index of medium is:

    A) \[{{\lambda }_{a/}}{{\lambda }_{m}}\]

    B) \[{{\lambda }_{m}}/{{\lambda }_{a}}\]

    C) \[{{\lambda }_{a}}\times {{\lambda }_{m}}\]

    D) None of these

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  • question_answer9) A solid sphere is rolling without slipping on a horizontal surface. The ratio of its rotational kinetic energy and translational kinetic energy is:

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

    B) \[\frac{2}{5}\]

    C) \[\frac{2}{7}\]

    D) \[\frac{7}{2}\]

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  • question_answer10) A liquid has only

    A) shear modulus

    B) Youngs modulus

    C) bulk modulus

    D) All of the above

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  • question_answer11) Van der Waals equation for gases is \[\left( P+\frac{a}{{{V}^{2}}} \right)\,(V-b)=RT\] The dimensions of constant a are

    A) \[ML{{\,}^{5}}{{T}^{-2}}\]

    B) \[ML{{\,}^{4}}{{T}^{-1}}\]

    C) \[ML{{\,}^{3}}{{T}^{-1}}\]

    D) \[ML{{\,}^{5}}{{T}^{-1}}\]

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  • question_answer12) The velocity of a particle in S.H.M. at displacement y from mean position is (\[a=\]amplitude\[\omega =\] angular frequency)

    A) \[\omega \sqrt{{{a}^{2}}+{{y}^{2}}}\]

    B) \[\omega \sqrt{{{a}^{2}}-{{y}^{2}}}\]

    C) \[\omega y\]

    D) \[{{\omega }^{2}}({{a}^{2}}-{{y}^{2}})\]

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  • question_answer13) Excess pressure in a soap bubble of radius r is proportional to

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

    B) \[\frac{1}{{{r}^{2}}}\]

    C) \[r\]

    D) \[{{r}^{2}}\]

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  • question_answer14) In a thermodynamic process there is no exchange of heat between the system and surroundings. Then the process is

    A) isothermal

    B) adiabatic

    C) isochoric

    D) isobaric

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  • question_answer15) The ratio of radii of two spheres of same material is 1 : 4, then the ratio of their heat capacities is

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

    B) \[\frac{1}{16}\]

    C) \[\frac{1}{32}\]

    D) \[\frac{1}{64}\]

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  • question_answer16) If the critical angle for total internal reflection from a medium to vacuum is \[30{}^\circ \], then the speed of light in the medium is

    A) \[6\times {{10}^{8}}m/s\]

    B) \[3\times {{10}^{8}}m/s\]

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

    D) \[1.5\times {{10}^{8}}m/s\]

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  • question_answer17) A prism has a refracting angle of \[60{}^\circ \]. If it produces a minimum deviation of \[30{}^\circ \] in an incident ray, the angle of incidence is

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

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

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

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

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  • question_answer18) A mass of 30 kg is suspended from a spring of spring constant 15 N/m. The time period of vertical oscillations of mass is

    A) \[\frac{3\pi }{\sqrt{2}}s\]

    B) \[2\pi \sqrt{2}\,s\]

    C) \[\pi \sqrt{2}\,s\]

    D) \[2\sqrt{2}\,s\]

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  • question_answer19) The focal length of objective and eye piece of a telescope are\[{{f}_{0}}\] and\[{{f}_{e}}\] respectively. Then its magnification will be:

    A) \[{{f}_{0}}+{{f}_{e}}\]

    B) \[{{f}_{0}}\times {{f}_{e}}\]

    C) \[\frac{{{f}_{0}}}{{{f}_{e}}}\]

    D) \[\frac{{{f}_{e}}}{{{f}_{0}}}\]

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  • question_answer20) The energy radiated by a black body is directly proportional to

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

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

    C) \[{{T}^{4}}\]

    D) \[T\]

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  • question_answer21) Huygens wave theory of light could not explain

    A) diffraction

    B) interference

    C) polarization

    D) photoelectric effect

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  • question_answer22) A thick mirror produces a number of images of an object. The brightest image is

    A) first

    B) second

    C) third

    D) last one

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  • question_answer23) If the threshold wavelength for sodium is \[5420\,\overset{\text{o}}{\mathop{\text{A}}}\,,\] then the work function a sodium is

    A) 4.58 eV

    B) 2.28 eV

    C) 1.14 eV

    D) 0.23 eV

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  • question_answer24) When a diode shows saturation current its dynamical plate resistance will be

    A) zero

    B) infinity

    C) indeterminate

    D) variable

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  • question_answer25) The wavelength associated with an electron accelerated through a potential difference of 100V is nearly

    A) \[100\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

    B) \[123\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

    C) \[1.23\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

    D) \[0.123\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

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  • question_answer26) The equation of motion of a progressive wave is y = 0.3 sin(314 t-1.57x) where and y are in metre and t is in second. The velocity of wave is

    A) 100 m/s

    B) 200 m/s

    C) 400 m/s

    D) 5 mm/s

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  • question_answer27) The minimum orbital angular momentum of the electron in hydrogen atom is

    A) \[h\]

    B) \[h/2\]

    C) \[h/2\pi \]

    D) \[h/\pi \]

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  • question_answer28) The energy of a hydrogen-like atom in its ground state is -54.4 eV. It may be

    A) hydrogen

    B) deuterium

    C) helium

    D) lithium

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  • question_answer29) A magnetic field can be produced by

    A) a moving charge

    B) a changing electric field

    C) a stationary charge

    D) both (a) and (b)

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  • question_answer30) X-rays incident on a metal

    A) exert a force on it

    B) transfers energy to it

    C) transfers momentum to it

    D) All of the above

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  • question_answer31) The binding energy of the deuterium is L 2.23 MeV. The mass defect in amu is

    A) 0.0024

    B) 0.0012

    C) 2.23

    D) 0.024

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  • question_answer32) An \[\text{-}\]particle is bombarded on \[{{N}^{14}}\]. As a result a \[{{O}^{17}}\]-nucleus is formed and a particle X is emitted. The particle X is

    A) neutron

    B) proton

    C) electron

    D) positron

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  • question_answer33) In a laser tube all the photons

    A) have same wavelength

    B) have same energy

    C) move in same direction

    D) move with same speed.

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  • question_answer34) Regarding a semi-conductor which one of the following is wrong?

    A) There are no free electrons at 0 K

    B) There are no free electrons at room temperature

    C) The number of free electrons increases with rise of temperature

    D) The charge carriers are electrons and holes.

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  • question_answer35) Transformers are used in

    A) DC circuits only

    B) AC circuits only

    C) in both (a) and (b)

    D) neither in (a) nor in (b).

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  • question_answer36) An organ pipe open at both ends contains

    A) longitudinal stationary waves

    B) longitudinal progressive waves

    C) transverse stationary waves

    D) transverse progressive waves

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  • question_answer37) Which one of the following acts as a neutron absorber in a nuclear reactor?

    A) Cd-rod

    B) Heavy water \[({{D}_{2}}O)\]

    C) Graphite

    D) Distilled water \[({{H}_{2}}O)\]

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  • question_answer38) Mass-energy equation\[E=m{{c}^{2}}\] was given

    A) Newton

    B) Kepler

    C) Einstein

    D) Millikan

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  • question_answer39) For changing an ammeter into a voltmeter, we should connect

    A) low resistance in series

    B) low resistance in parallel

    C) high resistance in series

    D) high resistance in parallel

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  • question_answer40) The value of R in gas equation \[PV=nRT\] is

    A) universal constant

    B) depends on number of moles n

    C) 4.2 J/mole K

    D) depends on nature of gas

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  • question_answer41) The penetrating power is minimum for

    A) \[\text{-}\]rays

    B) \[\text{-}\]rays

    C) \[\text{Y-}\]rays

    D) \[\text{X-}\]rays

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  • question_answer42) The breaking stress of a wire depends upon

    A) material of wire

    B) length of wire

    C) radius of wire

    D) shape of cross-section

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  • question_answer43) Water rises in a vertical capillary tube upto a length of 10 cm. If the tube is inclined at \[45{}^\circ \], the length of water column risen in the tube will be

    A) \[10\,cm\]

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

    C) \[5\,\sqrt{2}\,cm\]

    D) \[20\,cm\]

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  • question_answer44) The magnetic field at the centre of semi-circular wire carrying current \[i\] is

    A) \[\frac{{{\mu }_{0}}i}{2r}\]

    B) \[\frac{{{\mu }_{0}}i}{4r}\]

    C) \[\frac{{{\mu }_{0}}i}{r}\]

    D) \[\frac{{{\mu }_{0}}i}{2\pi r}\]

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  • question_answer45) If a wire of resistance R is stretched to double of its length, then the new resistance will be

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

    B) \[2R\]

    C) \[4R\]

    D) \[16R\]

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  • question_answer46) If currents in two parallel wires flow in opposite directions, the force between the wires will be

    A) attractive

    B) repulsive

    C) zero

    D) attractive or repulsive depending on the material of wires.

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  • question_answer47) The electric field and potential inside a hollow sphere of radius R and uniformly charged with charge q is

    A) \[0,0\]

    B) \[0,\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{q}{R}\]

    C) \[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{q}{{{R}^{2}}}\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{q}{R}\]

    D) \[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{q}{{{R}^{2}}}0\]

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  • question_answer48) If a glass rod is immersed in a liquid of same refractive index, then it will appear

    A) bent

    B) longer

    C) shorter

    D) invisible

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  • question_answer49) Two charges of magnitude\[-q\]and\[+4q\] are placed 1 cm apart. The distance between the point on the line joining and point at which the electric field is zero (with respect to\[-q\]), is

    A) 1 cm

    B) 2 cm

    C) 3cm

    D) 5cm

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  • question_answer50) A capacitor is charged by a battery and the charging battery is disconnected and a dielectric slab is inserted in it. Then for the capacitor

    A) charge remains constant

    B) charge increases

    C) potential difference remains constant

    D) potential difference increases

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  • question_answer51) The dimensional formula of constant a in van der Waals gas equation \[\left( p+\frac{a}{{{V}^{2}}} \right)\,(V-b)\,=RT\] is:

    A) \[[M{{L}^{3}}{{T}^{-2}}]\]

    B) \[[M{{L}^{5}}{{T}^{-2}}]\]

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

    D) \[[M{{L}^{2}}{{T}^{-5}}]\]

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  • question_answer52) The angle of projection for which the maximum height and range of the projectile are same is

    A) \[{{\tan }^{-1}}(2)\]

    B) \[{{\tan }^{-1}}(4)\]

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

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

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  • question_answer53) Two springs A and B having force constants k each are arranged (i) in parallel and (ii) in series. A mass M is attached to two arrangements separately. If time period in case (i) is\[{{T}_{1}}\]1 and in case (ii) is \[{{T}_{1}}\] then ratio\[\frac{{{T}_{1}}}{{{T}_{2}}}\] is

    A) \[1\]

    B) \[2\]

    C) \[0.5\]

    D) \[0.25\]

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  • question_answer54) A particle executing SHM has amplitude m and frequency 60 Hz, The maximum acceleration of the particle is

    A) \[60{{\pi }^{2}}\,m/{{s}^{2}}\]

    B) \[80{{\pi }^{2}}\,m/{{s}^{2}}\]

    C) \[120{{\pi }^{2}}\,m/{{s}^{2}}\]

    D) \[144{{\pi }^{2}}\,m/{{s}^{2}}\]

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  • question_answer55) In a capillary tube, water rises to a height of 2 cm. The height of water that will rise in another capillary tube of radius one-third that of first is

    A) 2 cm

    B) 3 cm

    C) 6 cm

    D) 0.67 cm

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  • question_answer56) A block of mass 10 kg is moving up an inclined plane of inclination \[30{}^\circ \] with an , initial speed of 5 m/s. It stops after 0.5 s, what is the value of coefficient of kinetic friction?

    A) 0.5

    B) 0.6

    C) \[\sqrt{3}\]

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

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  • question_answer57) The dynamic mass of electron having rest mass \[{{m}_{0}}\] and moving with speed 0.8 c is

    A) \[0.6\,{{m}_{0}}\]

    B) \[0.8\,{{m}_{0}}\]

    C) \[\frac{5}{3}\,{{m}_{0}}\]

    D) \[1.25\,{{m}_{0}}\]

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  • question_answer58) The potential energy of a satellite of mass and revolving at a height equal to radius of earth from earths surface, is

    A) \[-\,mg{{R}_{e}}\]

    B) \[-0.67\,mg{{R}_{e}}\]

    C) \[-0.5\,mg{{R}_{e}}\]

    D) \[-0.33\,mg{{R}_{e}}\]

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  • question_answer59) The wavelength of light emitted due to transition of electron from second orbit to first orbit in hydrogen atom is

    A) \[6563\overset{\text{o}}{\mathop{\text{A}}}\,\]

    B) \[4102\overset{\text{o}}{\mathop{\text{A}}}\,\]

    C) \[4861\overset{\text{o}}{\mathop{\text{A}}}\,\]

    D) \[1215\overset{\text{o}}{\mathop{\text{A}}}\,\]

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  • question_answer60) Which one of the following happens when light ray enters from air to a glass slab?

    A) Wavelength increases

    B) Wavelength decreases

    C) Frequency increases

    D) Frequency decreases

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  • question_answer61) Minimum wavelength of X-rays produced in a coolidge tube operated at potential difference of 40 kV is

    A) \[0.31\overset{\text{o}}{\mathop{\text{A}}}\,\]

    B) \[3.1\overset{\text{o}}{\mathop{\text{A}}}\,\]

    C) \[31\overset{\text{o}}{\mathop{\text{A}}}\,\]

    D) \[311\overset{\text{o}}{\mathop{\text{A}}}\,\]

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  • question_answer62) A convex lens of focal length 40 cm is (kept in contact with a concave lens of focal length 25 cm. The power of the combination is

    A) -6.5D

    B) +6.5D

    C) -1.5D

    D) +1.5D

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  • question_answer63) At the same temperature and pressure the densities of two diatomic gases are\[{{d}_{1,}}\] and \[{{d}_{2,}}\] Then the ratio of velocities of sound in these gases will be

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

    B) \[\sqrt{\frac{{{d}_{2}}}{{{d}_{1}}}}\]

    C) \[\sqrt{\frac{{{d}_{1}}}{{{d}_{2}}}}\]

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

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  • question_answer64) In the reaction \[_{92}{{X}^{234}}{{\xrightarrow{{}}}_{87}}{{\Upsilon }^{222}}.\]How many \[\text{-}\]particles and \[\beta \]-particles are emitted?

    A) 3 and 5

    B) 5 and 3

    C) 3 and 3

    D) 3 and 1

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  • question_answer65) When a substance is gradually heated, its initial colour is

    A) red

    B) green

    C) yellow

    D) white

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  • question_answer66) At which temperature the speed of sound will be three times of its speed at \[0{}^\circ C\]?

    A) \[1100{}^\circ C\]

    B) \[1284{}^\circ C\]

    C) \[1500{}^\circ C\]

    D) \[2184{}^\circ C\]

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  • question_answer67) Thermocouple, thermometer is based on

    A) Seebeck effect

    B) Pettier effect

    C) Thomson effect

    D) Joule effect

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  • question_answer68) An ideal gas has volume V0at \[27{}^\circ C\] It is heated at constant pressure, so/ that its volume becomes \[2{{V}_{0}}.\] Then the final temperature is

    A) 327 K

    B) \[327{}^\circ C\]

    C) \[54{}^\circ C\]

    D) 150K

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  • question_answer69) The electric field required to keep a water drop of mass in and charge e just to remain suspended is:

    A) \[mg\]

    B) \[emg\]

    C) \[\frac{mg}{e}\]

    D) \[\frac{em}{g}\]

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  • question_answer70) In a triode valve the plate current will be maximum when

    A) both grid and plate are positive

    B) both grid and plate are negative

    C) grid is negative and plate is positive

    D) grid is positive and plate is negative

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  • question_answer71) A point charge is located at 0. There is a point P at a distance r from it. The electric field at point P is 500 V/m and a potential of 3000 V. Then the value of r is

    A) 6m

    B) 12m

    C) 24 m

    D) 36 m

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  • question_answer72) A particle having charge 100 times that of an electron is revolving in a circular path of radius 0.8 m at the rate of 1 revolution/second. The magnetic field produced at the centre of orbit is

    A)  \[{{10}^{-3}}\,\mu {{  }_{0}}\]                                

    B)  \[{{10}^{-7}}\,\mu {{  }_{0}}\]

    C)  \[{{10}^{-11}}\,\mu {{  }_{0}}\]              

    D) \[{{10}^{-17}}\,\mu {{  }_{0}}\]

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  • question_answer73) A body of mass 10 kg is placed in a lift moving upward with an acceleration of 2m/s. The apparent weight of body is \[(g=9.8\,m/{{s}^{2}})\]

    A) 118 N

    B) 78 N

    C) 98 N

    D) 198 N

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  • question_answer74) The work function of a photometal is 6.63 eV. The threshold wavelength is

    A) \[3920\,\overset{o}{\mathop{\text{A}}}\,\]

    B) \[1866\,\overset{o}{\mathop{\text{A}}}\,\]

    C) \[186.6\,\overset{o}{\mathop{\text{A}}}\,\]

    D) \[18666\,\overset{o}{\mathop{\text{A}}}\,\]

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  • question_answer75) In a transformer the number of turns in primary and secondary coil are 50 and 40 respectively. If 220 V A.C. is applied across the primary coil, the ratio of current in primary and secondary coil is

    A) 4 : 5

    B) 5 : 4

    C) 16 : 25

    D) 25 : 16

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  • question_answer76) The equivalent resistance between A and B in the given circuit will be

    A) R

    B) 2R

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

    D) 6/R

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  • question_answer77) The nuclear energy in nuclear reactor is produced by

    A) nuclear fission

    B) nuclear fusion

    C) electric generator

    D) burning of coal

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  • question_answer78) At which temperature the Fahrenheit and Celcius scale give equal readings?

    A) \[40{}^\circ \]

    B) \[37{}^\circ \]

    C) \[-40{}^\circ \]

    D) \[80{}^\circ \]

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  • question_answer79) The electric field strength due to a dipole depends upon distance r as

    A) \[E\propto \frac{1}{r}\]

    B) \[E\propto \frac{1}{{{r}^{2}}}\]

    C) \[E\propto \frac{1}{{{r}^{3}}}\]

    D) \[E\propto \frac{1}{{{r}^{4}}}\]

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  • question_answer80) The reading of voltmeter in the circuit shown is

    A) 2.25 V

    B) 3.25 V

    C) 4.25V

    D) 6.25V

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  • question_answer81) The Youngs modulus of a wire of length (L) and radius (r) is \[\Upsilon .\] If the length is reduced to \[\frac{L}{2}\] and radius to\[\frac{r}{2}\] then its Youngs modulus will be

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

    B) \[\Upsilon \]

    C) \[2\Upsilon \]

    D) \[4\Upsilon \]

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  • question_answer82) The decay constant of a radioactive substance is\[\lambda .\] The half life and mean life of substance are respectively given by

    A) \[\frac{1}{\lambda }\text{and}\frac{{{\log }_{e}}2}{\lambda }\]

    B) \[\frac{{{\log }_{e}}2}{\lambda }\text{and}\frac{1}{\lambda }\]

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

    D) \[\frac{\lambda }{{{\log }_{e}}2}\text{and}\,\text{2}\lambda \]

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  • question_answer83) A source emitting a note of frequency 240 Hz is moving towards an observer with a speed of 20 m/s. If the observer also moves with a speed of 20 m/s towards the source, the apparent frequency heard by observer is (velocity of sound = 340 m/s)

    A) 270 Hz

    B) 240 Hz

    C) 268 Hz

    D) 360 Hz

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  • question_answer84) In pressure cooker, cooking is fast as compared to open atmosphere due to

    A) decreased boiling point

    B) increased boiling point

    C) enclosure of lid permanently

    D) heat is not lost to surroundings

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  • question_answer85) The terminal velocity (\[{{\upsilon }_{t}}\]) of a spherical body of radius r falling in a long vertical column of liquid of viscosity \[\eta \] depends on r and \[\eta \] as follows \[{{\upsilon }_{t}}\] is proportional to

    A) \[\eta \,r\]

    B) \[\eta \,{{r}^{2}}\]

    C) \[{{\eta }^{2}}r\]

    D) \[\frac{{{r}^{2}}}{\eta }\]

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  • question_answer86) An unpolarised light of intensity\[{{I}_{0}}\] on a polaroid whose optic axis is inclined at \[45{}^\circ \] to the incident light. Then the intensity of light emerging from the polaroid is

    A) \[{{I}_{0}}\]

    B) \[\frac{{{I}_{0}}}{2}\]

    C) \[\frac{{{I}_{0}}}{4}\]

    D) zero

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  • question_answer87) In a triode valve the plate resistance is equal to the toad resistance. Then voltage gain of triode valve is

    A) \[\mu \]

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

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

    D) \[2\mu \]

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  • question_answer88) A tube closed at one end produces a note B of frequency 512 Hz. If the tube is opened k at both ends, the frequency will become

    A) 512 Hz

    B) 256 Hz

    C) 128 Hz

    D) 1024 Hz

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  • question_answer89) A wire EF carrying current \[{{i}_{1}}\] is placed near a current carrying rectangular loop (ABCD as shown. Then the wire EF

    A) remains unaffected

    B) is attracted towards loop

    C) is repelled away from loop

    D) first attracted and then repelled

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  • question_answer90) The fractional change in internal energy when a gas is cooled from \[927{}^\circ C\] to \[27{}^\circ C\] is

    A) 0.25

    B) 0.75

    C) 1

    D) 0.67

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  • question_answer91) A plane progressive wave is given by \[y=25\cos (2\pi t-\pi x)\] Then the amplitude and frequency are respectively

    A) 25, 100

    B) 25, 1

    C) 25, 2

    D) 50\[\pi ,\] 2

    View Answer play_arrow
  • question_answer92) The ratio of specific charge of an \[\text{-}\] particle to that of a proton is

    A) 2 : 1

    B) 1 : 1

    C) 1 : 2

    D) 1 : 3

    View Answer play_arrow
  • question_answer93) Two vibrating tuning forks produce waves given by \[{{y}_{1}}=4\sin \,500\pi t,\] \[{{y}_{1}}=2\sin \,506\pi t\] If they are held near the ear of a person, the person will hear

    A) 3 beats/second with intensity ratio of maxima to minima equal to 9

    B) 3 beats/second with intensity ratio of maxima to minima equal to 2

    C) 6 beats/second with intensity ratio of maxima to minima to equal to 2

    D) 6 beats/second with intensity ratio of maxima to minima equal to 9

    View Answer play_arrow
  • question_answer94) The half life of a certain radioactive substance is 12 days. The time taken for \[\frac{7}{8}\] of sample to decay is

    A) 36 days

    B) 12 days

    C) 4 days

    D) 24 days

    View Answer play_arrow
  • question_answer95) Three bulbs of 40 W, 60 W and 100 W are arranged in series across a 220 V supply. The bulb giving maximum brightness is of

    A) 40 W

    B) 60 W

    C) 100 W

    D) all give equal brightness

    View Answer play_arrow
  • question_answer96) A cubical box contains charge +Q at its centre. The total magnetic flux emerging from the box is :

    A) \[\frac{Q}{{{\varepsilon }_{0}}}\]

    B) \[\frac{Q}{6{{\varepsilon }_{0}}}\]

    C) \[\frac{Q}{4{{\varepsilon }_{0}}}\]

    D) \[{{\varepsilon }_{0}}Q\]

    View Answer play_arrow
  • question_answer97) A parallel plate capacitor is filled with two dielectrics as shown in figure. If A is area of each plate; then the effective capacitance between X and \[\Upsilon \] is

    A) \[\frac{{{\varepsilon }_{0}}A}{d}\left( \frac{{{K}_{1}}+{{K}_{2}}}{2} \right)\]

    B) \[\frac{2{{\varepsilon }_{0}}A}{d}\left( {{K}_{1}}+{{K}_{2}} \right)\]

    C) \[\frac{2{{\varepsilon }_{0}}A}{d}\left( \frac{{{K}_{1}}+{{K}_{2}}}{{{K}_{1}}{{K}_{2}}} \right)\]

    D) \[\frac{2{{\varepsilon }_{0}}A}{d}\left( \frac{{{K}_{1}}{{K}_{2}}}{{{K}_{1}}+{{K}_{2}}} \right)\]

    View Answer play_arrow
  • question_answer98) A coil has self-inductance 60 mH. If the current in the coil increases from 1.0 A to 1.5 A in 0.1 second and the resistance of coil is \[4\Omega ,\] the current induced in the coil is

    A) 1.0A

    B) \[\frac{4}{3}\text{A}\]

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

    D) \[\frac{3}{40}\text{A}\]

    View Answer play_arrow
  • question_answer99) If a mica sheet of thickness t and refractive index \[\mu .\] is placed in the path of one of interfering beam in a double slit experiment then displacement of fringes will be

    A) \[\frac{D}{d}\mu t\]

    B) \[\frac{D}{d}(\mu -1)t\]

    C) \[\frac{D}{d}(\mu +1)t\]

    D) \[\frac{D}{d}({{\mu }^{2}}-1)t\]

    View Answer play_arrow
  • question_answer100) If a current of \[i\] amp is flowing in the winding of solenoid and ft is the number of turns per unit length, then the magnetic field at the centre of solenoid is

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

    B) \[\frac{{{\mu }_{0}}ni}{2}\]

    C) \[\frac{{{\mu }_{0}}i}{2n}\]

    D) \[\frac{{{\mu }_{0}}i}{n}\]

    View Answer play_arrow
  • question_answer101) Which one of the following relation is correct for the rate of diffusion of a gas(r)?

    A) \[r\propto \sqrt{d}\]

    B) \[r\propto \sqrt{1/d}\]

    C) \[r=d\]

    D) \[r\propto d\]

    View Answer play_arrow
  • question_answer102) Which of the following species, is planar?

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

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

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

    D) None of these

    View Answer play_arrow
  • question_answer103) Which one of the following is not a Lewis acid?

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

    B) \[SnC{{l}_{4}}\]

    C) \[B{{F}_{3}}\]

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

    View Answer play_arrow
  • question_answer104) Which one of the following is important ore of copper?

    A) Calamine

    B) Malachite

    C) Galena

    D) Dolomite

    View Answer play_arrow
  • question_answer105) Which of the following is most commonly used in photo-electrical cells?

    A) Francium

    B) Silicon

    C) Caesium

    D) Lithium

    View Answer play_arrow
  • question_answer106) in the following reaction, what is X? \[HC\equiv CH\xrightarrow[HgS{{O}_{4}}]{{{H}_{2}}O}x\]

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

    B) \[\underset{COOH}{\overset{COOH}{\mathop{|}}}\,\]

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

    D) \[\underset{C{{H}_{2}}OH}{\overset{C{{H}_{2}}OH}{\mathop{|}}}\,\]

    View Answer play_arrow
  • question_answer107) The product formed by the reaction of acetamide with \[B{{r}_{2}}\] in presence of \[NaOH\]is:

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

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

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

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

    View Answer play_arrow
  • question_answer108) An asymmetric carbon atom is that in which

    A) three similar and one dissimilar groups

    B) two similar and two dissimilar groups

    C) all the different groups attached to it

    D) None of these

    View Answer play_arrow
  • question_answer109) How many structural isomers can be obtained from \[{{C}_{2}}HB{{r}_{2}}\]

    A) \[4\]

    B) \[3\]

    C) \[2\]

    D) \[1\]

    View Answer play_arrow
  • question_answer110) When an a-particle is removed from Ra, the new element formed is of

    A) zero group

    B) Ist group

    C) VIIth group

    D) IIIrd group

    View Answer play_arrow
  • question_answer111) Which one of the following metal is used in galvanization?

    A) \[Cu\]

    B) \[Ag\]

    C) \[Zn\]

    D) \[Fe\]

    View Answer play_arrow
  • question_answer112) The process carried out in perfect insulation is

    A) isothermal

    B) isobaric

    C) isochoric

    D) adiabatic

    View Answer play_arrow
  • question_answer113) When potassium dichromate crystals are heated, we get

    A) oxygen

    B) hydrogen

    C) sulphur dioxide

    D) hydrogen sulphide

    View Answer play_arrow
  • question_answer114) In the preparation of sulphuric acid,\[{{V}_{2}}{{O}_{5}}\] is used in the reaction which is

    A) \[S+{{O}_{2}}\to S{{O}_{2}}~~\]

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

    C) \[2S{{O}_{2}}+{{O}_{2}}\to 2S{{O}_{3}}\]

    D) None of these

    View Answer play_arrow
  • question_answer115) Which one of the following configuration is correct for \[F{{e}^{+3}}\] ?

    A) \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}4{{s}^{2}}3{{d}^{3}}\]

    B) \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}4{{s}^{2}}3{{d}^{7}}\]

    C) \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}4{{s}^{2}}3{{d}^{6}}\]

    D) \[1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{6}}\,3{{s}^{2}}\,3{{p}^{6}}\,3{{d}^{5}}\]

    View Answer play_arrow
  • question_answer116) IUPAC name of tert-butyl alcohol is

    A) Butanol-2

    B) 2-Methyl propanol-2

    C) Butanol-1

    D) Propanol-2

    View Answer play_arrow
  • question_answer117) 1-Chlorobutane on reaction with alcoholic potash gives

    A) 1-Butanol

    B) 2-Butene

    C) 1-Butene

    D) 2-Butanol

    View Answer play_arrow
  • question_answer118) Which one of the following is good conductor of electricity in solution state?

    A) Metallic solid

    B) Covalent

    C) Molecular solid

    D) Ionic compound

    View Answer play_arrow
  • question_answer119) When \[C{{H}_{3}}C{{H}_{2}}Br\] reacts with sodium acetylide, the main product is

    A) 1-butyne

    B) 1-butene

    C) 1-butane

    D) 3-butane

    View Answer play_arrow
  • question_answer120) By increasing the temperature, the vapour pressure of a substance

    A) does not depend on temperature

    B) always increases

    C) decreases

    D) partially depends on temperature

    View Answer play_arrow
  • question_answer121) Which one of the following is Buffer solution?

    A) \[C{{H}_{3}}COON{{H}_{4}}\]

    B) \[NaOH\]

    C) \[Pb{{(OH)}_{2}}\]

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

    View Answer play_arrow
  • question_answer122) The correct order of acidic strength is

    A) \[HF<HCl<HBr<HI\]

    B) \[HBr<HCl<HI<HF\]

    C) \[HCl<HBr<HF<HI\]

    D) \[HI<HBr<HCl<HF\]

    View Answer play_arrow
  • question_answer123) Which one of the following has maximum ionization potential?

    A) \[K\]

    B) \[Be\]

    C) \[Na\]

    D) \[Mg\]

    View Answer play_arrow
  • question_answer124) Carbylamine test is performed in alcoholic \[KOH\]by heating a mixture of

    A) chloroform and silver powder

    B) an alkyl halide and a pri. Amine

    C) an alkyl cyanide and a pri. Amine

    D) trihalongenated methane and a primary amine

    View Answer play_arrow
  • question_answer125) The most favourable condition for the manufacture of \[N{{H}_{3}}\]is

    A) low pressure and high temperature

    B) low temperature and high pressure

    C) high temperature and high pressure

    D) low temperature and low pressure

    View Answer play_arrow
  • question_answer126) Which of the following gas is insoluble in water?

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

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

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

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

    View Answer play_arrow
  • question_answer127) Which one of the following shows haloform test?

    A) Butanol-2

    B) Butanol-1

    C) 2-methyl ketone

    D) 2-methyl propane

    View Answer play_arrow
  • question_answer128) Isobars have

    A) same number of nucleons

    B) same number of neutrons

    C) same number of protons

    D) None of these

    View Answer play_arrow
  • question_answer129) If acetyl chloride is reduced in the presence of \[BaS{{O}_{4}}\]and Pd then

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

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

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

    D) None of these

    View Answer play_arrow
  • question_answer130) The unit of the molality is

    A) mole per litre

    B) mole per kilogram

    C) per mole per litre

    D) mole litre

    View Answer play_arrow
  • question_answer131) Which one of the following does not respond to Cannizzaro reaction?

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

    B) \[HCHO\]

    C) \[CC{{l}_{3}}CHO\]

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

    View Answer play_arrow
  • question_answer132) \[20\text{ }gm.\]\[CaC{{O}_{3}}\] on decomposition gives \[C{{O}_{2}}\] at STP

    A) \[4.48\text{ }litre\]

    B) \[22.4\text{ }litre\]

    C) \[2.24\text{ }litre\]

    D) None of these

    View Answer play_arrow
  • question_answer133) Lucas reagent is

    A) \[dil\text{ }HCl+\text{ }anhyd.\text{ }ZnC{{l}_{2}}\]

    B) \[Pd-BaS{{O}_{4}}\]

    C) \[cone.HCl+anhyd.ZuC{{l}_{2}}\]

    D) None of the above

    View Answer play_arrow
  • question_answer134) Of the following elements, which one has the same oxidation state in all of its compounds?

    A) carbon

    B) hydrogen

    C) oxygen

    D) fluorine

    View Answer play_arrow
  • question_answer135) When \[{{C}_{2}}{{H}_{4}}\]is reacted with \[{{H}_{2}}\] in presence of \[Ni\], then the product formed is

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

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

    C) \[HCOOH\]

    D) \[HCHO\]

    View Answer play_arrow
  • question_answer136) Vinegar is

    A) \[HCOOH\]

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

    C) \[HCHO\]

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

    View Answer play_arrow
  • question_answer137) At high altitude the boiling point of water lowers because

    A) atmospheric pressure is high

    B) atmospheric pressure is low

    C) temperature is low

    D) None of these

    View Answer play_arrow
  • question_answer138) Catalyst increases rate of reaction by

    A) decreasing equilibrium constant

    B) decreasing threshold energy

    C) decreasing activation energy

    D) none of the above

    View Answer play_arrow
  • question_answer139) \[{{C}_{4}}{{H}_{11}}N\] shows how many primary amines?

    A) \[1\]

    B) \[2\]

    C) \[3\]

    D) \[4\]

    View Answer play_arrow
  • question_answer140) Which one of the following is not a colligative property?

    A) Elevation in boiling point

    B) Osmotic pressure

    C) Optical activity

    D) Relative lowering of vapour pressure

    View Answer play_arrow
  • question_answer141) Grignard reagent reacts with \[HCHO\]to produce

    A) sec. alcohol

    B) anhydride

    C) an acid

    D) primary alcohol

    View Answer play_arrow
  • question_answer142) Which one of the following is slag?

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

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

    C) \[CaO\]

    D) \[Ca{{(OH)}_{2}}\]

    View Answer play_arrow
  • question_answer143) When 2-bromobutane reacts with alcoholic \[KOH,\]the reaction is

    A) hydrogenation

    B) halogenation

    C) dehydro halogenation

    D) none of these

    View Answer play_arrow
  • question_answer144) Adiabatic process involves

    A) \[\Delta q=0\]

    B) \[\Delta E=0\]

    C) \[\Delta W=0\]

    D) \[\Delta V=0\]

    View Answer play_arrow
  • question_answer145) If three unreactive gases having partial pressures \[{{P}_{A}},{{P}_{B}}\] and \[{{P}_{C}};\] their moles are respectively \[1\text{ }mole,\] \[2\text{ }moles\] and \[3moles,\]then their total pressure is

    A) \[P={{P}_{A}}+{{P}_{B}}+{{P}_{C}}\]

    B) \[P=\frac{\sqrt{{{P}_{A}}+{{P}_{B}}+{{P}_{C}}}}{3}\]

    C) \[P=\frac{{{P}_{A}}+{{P}_{B}}+{{P}_{C}}}{6}\]

    D) none of these

    View Answer play_arrow
  • question_answer146) Glucose reacts with bromine water to produce

    A) Glyceraldehyde

    B) Gluconic acid

    C) saccharic acid

    D) Glucaric acid

    View Answer play_arrow
  • question_answer147) If \[0.75\text{ }mole\]of an ideal gas expands isothermally at \[{{27}^{o}}C\]from 15 lit. to\[25\text{ }lit\]. then the maximum work done is

    A) \[9.14\text{ }J\]

    B) \[9.23J\]

    C) \[9.43J\]

    D) \[9.75J\]

    View Answer play_arrow
  • question_answer148) Which does not form linear structure?

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

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

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

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

    View Answer play_arrow
  • question_answer149) Zeeman effect explains splitting of lines in

    A) magnetic field

    B) electric field

    C) both of these

    D) none of these

    View Answer play_arrow
  • question_answer150) In Lake test of \[A{{l}^{3+}}\] ion, there is formation of coloured floating-lake. It is due to

    A) adsorption of litmus by \[{{H}_{2}}O\]

    B) adsorption of litmus by \[Al{{(OH)}_{3}}\]

    C) adsorption of litmus by \[Al{{(OH)}_{4}}\]

    D) none of the above.

    View Answer play_arrow
  • question_answer151) In Clemmensens reduction, acetone gives

    A) propane

    B) propene

    C) propanol

    D) propyne

    View Answer play_arrow
  • question_answer152) Chloroform reacts with cone. \[HN{{O}_{3}}\]to give

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

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

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

    D) \[CHC{{l}_{2}}.HN{{O}_{3}}\]

    View Answer play_arrow
  • question_answer153) Anhydrous \[AlC{{l}_{3}}\] is prepared from

    A) \[Al+C{{l}_{2}}~\]

    B) \[Al+dil.\text{ }HCl\]

    C) \[Al+con;\text{ }HCl\]

    D) \[Al+dry\text{ }HCl\text{ }gas\]

    View Answer play_arrow
  • question_answer154) Which one of the following responds to Tollens test?

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

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

    C) \[HCOOH\]

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

    View Answer play_arrow
  • question_answer155) Marsh gas is

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

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

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

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

    View Answer play_arrow
  • question_answer156) If volume of 2 moles of an ideal gas at \[540\text{ }K\]is \[44.8\text{ }litre,\]its pressure is

    A) \[2\text{ }aim.\]

    B) \[4\,atm.\]

    C) \[5\text{ }aim.\]

    D) \[6\text{ }atm.\]

    View Answer play_arrow
  • question_answer157) Which one of the following is not a Chalcogen?

    A) \[S\]

    B) \[Se\]

    C) \[O\]

    D) \[Na\]

    View Answer play_arrow
  • question_answer158) The number of moles of \[KCl\]in \[1000\text{ }ml\] of \[3\text{ }molar\]solution is

    A) \[2\]

    B) \[3\]

    C) \[4\]

    D) \[5\]

    View Answer play_arrow
  • question_answer159) Tyndall effect is shown by

    A) solution

    B) precipitate

    C) sol

    D) none of these

    View Answer play_arrow
  • question_answer160) Epsom salt is

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

    B) \[MgS{{O}_{4}}\text{ }.\text{ }7{{H}_{2}}O\]

    C) \[BaS{{O}_{4}}\text{ }.2{{H}_{2}}O\]

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

    View Answer play_arrow
  • question_answer161) For the reaction, \[{{N}_{2}}+3{{H}_{2}}\xrightarrow{{}}2N{{H}_{3}}\] which one of the following is correct regarding \[\Delta H\]?

    A) \[\Delta H=\Delta E-RT\]

    B) \[\Delta H=\Delta E-2RT\]

    C) \[\Delta H=\Delta E+2RT\]

    D) \[\Delta H=\Delta E+RT\]

    View Answer play_arrow
  • question_answer162) The best water soluble hydroxide is

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

    B) \[Ba{{(OH)}_{2}}\]

    C) \[Sr{{(OH)}_{2}}\]

    D) \[Mg{{(OH)}_{2}}\]

    View Answer play_arrow
  • question_answer163) On dry heating, calcium formate gives

    A) acetaldehyde

    B) formaldehyde

    C) acetone

    D) acetic acid

    View Answer play_arrow
  • question_answer164) The normality of a solution containing \[31.5\text{ }gm\]. of hydrated oxalic acid \[({{C}_{2}}{{H}_{2}}{{O}_{4}}.2{{H}_{2}}O)\] in\[1250\text{ }ml\]. of solution is

    A) \[0.1N\]

    B) \[0.2N\]

    C) \[0.4N\]

    D) \[0.6N\]

    View Answer play_arrow
  • question_answer165) Both oxidation and reduction takes place in

    A) \[NaBr+HCl\xrightarrow{{}}NaCl+HBr\]

    B) \[HBr+AgN{{O}_{3}}\text{ }\xrightarrow{{}}\text{ }AgBr+HN{{O}_{3}}\]

    C) \[{{H}_{2}}+B{{r}_{2}}\xrightarrow{{}}2HBr\]

    D) \[CaO+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}CaS{{O}_{4}}+{{H}_{2}}O\]

    View Answer play_arrow
  • question_answer166) The number of atoms in\[4.25\text{ }gm\]. of \[N{{H}_{3}}\]is

    A) \[4.157\times {{10}^{23}}\]

    B) \[3.343\times {{10}^{23}}\]

    C) \[6.023\times {{10}^{23}}\]

    D) \[8.527\times {{10}^{23}}\]

    View Answer play_arrow
  • question_answer167) For the reaction, \[C{{H}_{3}}COCl\xrightarrow{{{H}_{2}}/Pd}X,\] then X is

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

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

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

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

    View Answer play_arrow
  • question_answer168) The freezing point of a solution, prepared from \[1.25\text{ }gm\]. of a non-electrolyte and \[20gm\] of water, is \[271.9\text{ }K\]. If the molar depression constant is \[1.86\text{ }K/mol,\] then molar mass of the solute is

    A) \[103.3\]

    B) \[105.7\]

    C) \[107.9\]

    D) \[109.3\]

    View Answer play_arrow
  • question_answer169) When \[C{{H}_{4}},\] \[{{C}_{2}}{{H}_{2}},\] \[{{C}_{2}}{{H}_{4}}\] and \[{{C}_{2}}{{H}_{6}}\]gasses are passed through the Wolf bottle of \[~AgN{{O}_{3}},\] then which one of the following gas does not come out from the bottle?

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

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

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

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

    View Answer play_arrow
  • question_answer170) Both \[C{{H}_{4}}\]and \[{{C}_{2}}{{H}_{6}}\] can be prepared in one step by the reaction of

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

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

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

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

    View Answer play_arrow
  • question_answer171) An ideal solution is formed when its constituents

    A) are converted into ideal gases

    B) have zero volume change

    C) have zero heat of mixing

    D) have both (b) and (c)

    View Answer play_arrow
  • question_answer172) A compound gives a yellow precipitate on warming with a aq. solution of\[NaOH\]. Its vapour density is 29. The compound is

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

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

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

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

    View Answer play_arrow
  • question_answer173) Which one of the following does not react with \[CuS{{O}_{4}}\]solution?

    A) \[Ag\]

    B) \[Fe\]

    C) \[Mg\]

    D) \[Zn\]

    View Answer play_arrow
  • question_answer174) Glycerol at \[530K\]reacts with oxalic acid to produce

    A) glyceraldehyde

    B) allyl alcohol

    C) formic acid

    D) acetic acid

    View Answer play_arrow
  • question_answer175) On hydrolysis, \[PC{{l}_{3}}\]gives

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

    B) \[{{H}_{3}}P{{O}_{4}}\]

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

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

    View Answer play_arrow
  • question_answer176) Bleaching powder is obtained by treating chlorine with

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

    B) \[Ca{{(OH)}_{2}}\]

    C) \[CaO\]

    D) none of these

    View Answer play_arrow
  • question_answer177) \[Mg\] burns in air to produce

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

    B) \[MgO\]

    C) \[Mg3{{H}_{2}}\]

    D) \[MgO+M{{g}_{3}}{{N}_{2}}\]

    View Answer play_arrow
  • question_answer178) Deficiency of vitamin E causes

    A) scurvy

    B) beri-beri

    C) antifertility

    D) rickets

    View Answer play_arrow
  • question_answer179) Total number of electrons contained in all the p-orbitals of bromine is

    A) \[5\]

    B) \[17\]

    C) \[19\]

    D) \[23\]

    View Answer play_arrow
  • question_answer180) How many times a solution of \[pH=2\]has higher acidity than the solution of \[pH=6\]

    A) \[4\]

    B) \[12\]

    C) \[400\]

    D) \[10000\]

    View Answer play_arrow
  • question_answer181) The raw material used in Fischer Tropsch process for manufacture of synthetic petrol is

    A) producer gas

    B) coal gas

    C) water gas

    D) water gas + excess of Hydrogen

    View Answer play_arrow
  • question_answer182) Which one of the following acid possesses oxidizing, reducing and complex forming properties?

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

    B) \[HCl\]

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

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

    View Answer play_arrow
  • question_answer183) In the first order reaction, half of the reaction is completed in 100 second. The time for 99% reaction to occur will be

    A) \[664.64\text{ }sec\]

    B) \[646.6\text{ }sec\]

    C) \[660.9\text{ }sec~\]

    D) \[654.5\text{ }sec\]

    View Answer play_arrow
  • question_answer184) Azimuthal quantum number \[(l)=2,\] then the value of principal quantum number (n)is

    A) \[1\]

    B) \[2\]

    C) \[3\]

    D) \[4\]

    View Answer play_arrow
  • question_answer185) The product obtained by heating 3, 3-dimethyl-2-butanol with \[{{H}_{2}}S{{O}_{4}}\]is

    A) 3, 3-dimethyl -1-butene

    B) 2, 3 -dimethyl-1-butene

    C) 2, 3-dimethyl-2-butene

    D) none of these

    View Answer play_arrow
  • question_answer186) \[KI\] reacts with \[CuS{{O}_{4}}\]to produce

    A) \[{{K}_{2}}S{{O}_{4}}+C{{u}_{2}}{{l}_{2}}+{{I}_{2}}\]

    B) \[Cu{{I}_{2}}+{{K}_{2}}S{{O}_{4}}\]

    C) \[C{{u}_{2}}{{I}_{2}}+{{K}_{2}}S{{O}_{4}}\]

    D) \[{{K}_{2}}S{{O}_{4}}+Cu{{I}_{2}}+{{I}_{2}}\]

    View Answer play_arrow
  • question_answer187) Which one of the following have least \[_{p}{{K}_{a}}\] value?

    A) \[CC{{l}_{3}}COOH\]

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

    C) \[C{{F}_{3}}COOH\]

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

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  • question_answer188) lonization potential is maximum for

    A) \[Al\]

    B) \[In\]

    C) \[Ga\]

    D) \[B\]

    View Answer play_arrow
  • question_answer189) Acetylene contains number of bonds

    A) \[5\sigma \] and \[3\pi \]

    B) \[5\sigma \] and \[1\pi \]

    C) \[3\sigma \] and \[2\pi \]

    D) \[4\sigma \] and \[1\pi \]

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  • question_answer190) Ethylidene dibromide on heating with metallic sodium in ether solution produce

    A) 1-Butene

    B) Ethylene

    C) Ethane

    D) 2-Butene

    View Answer play_arrow
  • question_answer191) lonization constant of \[C{{H}_{3}}COOH\]is\[1.8\times {{10}^{-5}}\]. The concentration of \[{{H}^{+}}\] ion in \[0.1M\] solution is

    A) \[1.3\times {{10}^{-2}}M\]

    B) \[1.8\times {{10}^{-5}}M\]

    C) \[1.8\times {{10}^{-6}}M\]

    D) \[1.34\times {{10}^{-3}}M\]

    View Answer play_arrow
  • question_answer192) Which one of the following pair of elements has similar properties?

    A) \[10,12\]

    B) \[11,20\]

    C) \[21,33\]

    D) \[13,31\]

    View Answer play_arrow
  • question_answer193) Borazine is represented by the mol. formula

    A) \[{{B}_{3}}{{N}_{3}}{{H}_{6}}\]

    B) \[{{B}_{4}}{{N}_{2}}{{H}_{6}}\]

    C) \[{{B}_{5}}N{{H}_{6}}\]

    D) \[{{B}_{6}}{{H}_{6}}\]

    View Answer play_arrow
  • question_answer194) The increasing order of acidity of \[{{H}_{2}}{{O}_{2}},\]\[{{H}_{2}}O\] and \[C{{O}_{2}}\]is

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

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

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

    D) \[{{H}_{2}}O<{{H}_{2}}{{O}_{2}}>C{{O}_{2}}\]

    View Answer play_arrow
  • question_answer195) Red lead is

    A) \[PbO\]

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

    C) \[P{{b}_{3}}{{O}_{4}}\]

    D) \[P{{b}_{4}}{{O}_{3}}\]

    View Answer play_arrow
  • question_answer196) A compound having mol., \[mass=78\]contains \[C=92.31%\]and \[H=7.69%.\]Its molecular formula is

    A) \[{{C}_{5}}{{H}_{12}}\]

    B) \[{{C}_{5}}{{H}_{18}}\]

    C) \[{{C}_{4}}{{H}_{30}}\]

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

    View Answer play_arrow
  • question_answer197) Anti Markownikoffs rule addition reaction is not observed in:

    A) pent-2-ene

    B) but-2-ene

    C) 1-butene

    D) propene

    View Answer play_arrow
  • question_answer198) The hybridization of carbon in \[C{{H}_{3}}-CH=C=C{{H}_{2}}\]is

    A) \[s{{p}^{3}}s{{p}^{3}}s{{p}^{2}}s{{p}^{2}}\]

    B) \[s{{p}^{3}}s{{p}^{2}}sp\,s{{p}^{3}}\]

    C) \[s{{p}^{3}}s{{p}^{3}}s{{p}^{2}}s{{p}^{3}}\]

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

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  • question_answer199) Helium is filled in balloons in place of hydrogen as it is

    A) non-inflammable

    B) lighter than hydrogen

    C) frequently available

    D) radioactive

    View Answer play_arrow
  • question_answer200) Hesss law states

    A) energy of formation of a compound does not depend on path

    B) energy of formation of a compound depends on path

    C) both (a) and (b)

    D) none of the above

    View Answer play_arrow
  • question_answer201) Heart sound DUB is caused due to closing of

    A) valve

    B) tricuspid valve

    C) semilunar valve

    D) None of these

    View Answer play_arrow
  • question_answer202) Ornithine cycle is found in

    A) liver

    B) kidney

    C) heart

    D) muscles

    View Answer play_arrow
  • question_answer203) Goitre is a pathological condition associated with:

    A) glucagon

    B) thyroxine

    C) progesterone

    D) testosterone

    View Answer play_arrow
  • question_answer204) Connecting link between reptiles and birds is:

    A) Dodo

    B) Dimetrodon

    C) Sphenodon

    D) Archaeopteryx

    View Answer play_arrow
  • question_answer205) Which one of the following is correct?

    A) all enzymes are proteins

    B) all proteins are enzymes

    C) some enzymes are proteins

    D) all fats are enzymes

    View Answer play_arrow
  • question_answer206) The site of fertilization in mammals is

    A) ovary

    B) abdominal

    C) uterus

    D) fallopian tube

    View Answer play_arrow
  • question_answer207) Natural parthenogenesis is found in?

    A) housefly

    B) honey bee

    C) Drosopiula

    D) all of these

    View Answer play_arrow
  • question_answer208) Sex hormones can work without the help of

    A) insulin

    B) placenta

    C) pituitary

    D) gonadotropins

    View Answer play_arrow
  • question_answer209) Mammals excrete

    A) urea

    B) uric acid

    C) ammonia

    D) all of these

    View Answer play_arrow
  • question_answer210) Correct sequence in cell type is

    A) \[{{\text{G}}_{\text{1}}}\text{,}{{\text{G}}_{\text{2,}}}\text{M}\text{.S}\]

    B) \[{{\text{G}}_{\text{1}}}\text{,S,}{{\text{G}}_{\text{2,}}}\text{M}\]

    C) \[{{\text{G}}_{\text{1}}}\text{,M,S,}{{\text{G}}_{1}}\]

    D) \[\text{S,M,}{{\text{G}}_{1,}}{{G}_{2}}\]

    View Answer play_arrow
  • question_answer211) Vestigeal organ in human being is

    A) incisor

    B) canines

    C) molar

    D) premolar

    View Answer play_arrow
  • question_answer212) Aerobic respiration is related with

    A) mitochondria

    B) plasma membrane

    C) golgi bodies

    D) endoplasmic reticulum

    View Answer play_arrow
  • question_answer213) The connection between two cells is

    A) plasmadesmata

    B) microfilaments

    C) sieve tube

    D) none of these

    View Answer play_arrow
  • question_answer214) Natural pearl is

    A) a mollusc

    B) an annelid

    C) an arthropod

    D) an echinodermate

    View Answer play_arrow
  • question_answer215) Salient feature of Arthropoda is

    A) aquatic and free living

    B) chitinous exesrction and jointed appendeges

    C) both a and b

    D) none of these

    View Answer play_arrow
  • question_answer216) Miller and Urey performed an experiment to prove the origin of life. They took gases \[N{{H}_{3}}\] and \[{{H}_{2}}\] along with

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

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

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

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

    View Answer play_arrow
  • question_answer217) Spermatogenesis is induced by

    A) FSH

    B) ACTH

    C) ICSH

    D) ATH

    View Answer play_arrow
  • question_answer218) Which one of the following is the most effective in Ascaris infection?

    A) chloroquin

    B) Cinchona

    C) Colchicum

    D) oil of Chenopodium

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  • question_answer219) Which one of the following is chemical transmitter for neuro impulse conduction?

    A) glycine

    B) GABA

    C) adrenalin

    D) acetylcholine

    View Answer play_arrow
  • question_answer220) During hibernation, frogs respiration is

    A) cutaneous

    B) pulmonary

    C) buccopharyngeal

    D) pharyngeal

    View Answer play_arrow
  • question_answer221) Blood carries \[C{{O}_{2}}\] mainly in which form?

    A) \[Hb.C{{O}_{2}}\]

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

    C) carbonic acid

    D) \[Hb.C{{O}_{2}}\] and carbon monoxide

    View Answer play_arrow
  • question_answer222) Which one of the following is necessary to start clotting of blood?

    A) heparin

    B) serotonin

    C) thromboplastin and \[C{{a}^{++}}\]

    D) fibrinogen and prothrombin

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  • question_answer223) During oxidative phosphorylation, the net gain of ATP is

    A) 40

    B) 38

    C) 34

    D) 30

    View Answer play_arrow
  • question_answer224) Which of the following pairs is correct?

    A) annelida-polychaeta-leech

    B) arthropoda-crustacea-cockroach

    C) mollusca-cephalopoda-Octopus

    D) protozoa-Hydra

    View Answer play_arrow
  • question_answer225) Nerve impulse initiates with the movements of

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

    B) \[N{{a}^{+}}\]

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

    D) \[M{{g}^{+}}\]

    View Answer play_arrow
  • question_answer226) Spindle fibres of a mitotic cells are made Up of

    A) actin

    B) myosin

    C) collagen

    D) tubutin

    View Answer play_arrow
  • question_answer227) The migrating birds rely on the

    A) anaerobic oxidation of proteins

    B) highly efficient aerobic oxidation of fats

    C) anaerobic oxidation of carbohydrates

    D) all of these

    View Answer play_arrow
  • question_answer228) Erythrocytes of adult rabbit and other mammals are formed in

    A) liver

    B) spleen

    C) kidney

    D) red bone marrow

    View Answer play_arrow
  • question_answer229) Pseudocoel is a cavity found in

    A) Hydra

    B) Ascaris

    C) housefly

    D) sponge

    View Answer play_arrow
  • question_answer230) Sarcolemma is a membrane found over

    A) heart

    B) cardiac muscle

    C) muscle fibre

    D) nerve fibre

    View Answer play_arrow
  • question_answer231) Heparin

    A) is antiserum

    B) helps in clotting

    C) helps in secretion

    D) is anticoagulant

    View Answer play_arrow
  • question_answer232) Trichocyst and nematocysts are meant for

    A) defense

    B) nutrition

    C) respiration

    D) excretion

    View Answer play_arrow
  • question_answer233) Digestion and distribution of nutrients both functions are performed by

    A) blastocoels

    B) coelom

    C) spongocoel

    D) gastrovascular cavity

    View Answer play_arrow
  • question_answer234) In mammals the digestion of starch starts from

    A) mouth

    B) stomach

    C) oesophagus

    D) duodenum

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  • question_answer235) In which of the following, Nissls granules are found?

    A) liver cells

    B) nerve cells

    C) intestinal cells

    D) uriniferous tubules

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  • question_answer236) In sponges, food is stored in

    A) porocytes

    B) choanocytes

    C) amoebocytes

    D) thesocytes

    View Answer play_arrow
  • question_answer237) Largest egg is of

    A) PPLO

    B) Ostrich

    C) Hydra

    D) Periplanata Americana

    View Answer play_arrow
  • question_answer238) Which one of the following is common in annelida and arthropods?

    A) basal nerve cord

    B) ventral nerve cord

    C) dorsal nerve cord

    D) anterior nerve cord

    View Answer play_arrow
  • question_answer239) When bath-sponges dries up, which of the following is left?

    A) spicules

    B) tentacles

    C) spongin fibres

    D) none of these

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  • question_answer240) Digestion of cellulose in non-ruminants takes place in

    A) caecum

    B) colon

    C) small intestine

    D) large intestine

    View Answer play_arrow
  • question_answer241) DNA is found in

    A) nucleus only

    B) cytoplasm only

    C) nucleus and cytoplasm

    D) none of these

    View Answer play_arrow
  • question_answer242) Cellular respiration occurs in

    A) nucleus

    B) ribosomes

    C) golgi body

    D) mitochondria

    View Answer play_arrow
  • question_answer243) Joint between humerus and ulna is

    A) saddle joint

    B) hinge joint

    C) fibrous joint

    D) ball and socket

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  • question_answer244) Who discovered that malaria is transmitted by mosquitoes?

    A) Grassi

    B) Laveron

    C) Lancisi

    D) Ronald Ross

    View Answer play_arrow
  • question_answer245) Which one of the following is a source of energy for muscle contraction

    A) actin

    B) myosin

    C) ATP

    D) actomyosin

    View Answer play_arrow
  • question_answer246) Tube feet are locomotary organs found in

    A) annelids

    B) Mollusca

    C) arthropods

    D) echinoderms

    View Answer play_arrow
  • question_answer247) Anti-A and Anti-B antibodies are not found in which of the following blood group?

    A) AB

    B) O

    C) A

    D) B

    View Answer play_arrow
  • question_answer248) Incubation period of Plasmodium vivax is

    A) 4 days

    B) 6 days

    C) 14 days

    D) 30 days

    View Answer play_arrow
  • question_answer249) Sympathetic nervous system induces

    A) heartbeat

    B) secretion of semen

    C) secretion of saliva

    D) secretion of digestive juices

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  • question_answer250) Organ of Corti is found in

    A) heart

    B) kidneys

    C) inner ear

    D) nasal chamber

    View Answer play_arrow
  • question_answer251) Apical dominance is caused by

    A) \[\text{I}\]AA

    B) \[\text{I}\]BA

    C) 2, 4-D

    D) 2, 4, 5-T

    View Answer play_arrow
  • question_answer252) Spore of Funnria, on germination, produces

    A) protonema

    B) antheridia

    C) archegonia

    D) vegetative body

    View Answer play_arrow
  • question_answer253) Plasmids are

    A) viral RNA in host cells

    B) viral DNA in host cells

    C) extra non-genetic element

    D) extrachromosomal material of E.coli

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  • question_answer254) During food chain, maximum energy is stored in

    A) producer

    B) primary consumer

    C) secondary consumer

    D) decomposer

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  • question_answer255) Cold treatment of seeds is called

    A) vernalization

    B) stratification

    C) devernalization

    D) photophosphorylation

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  • question_answer256) Bordered pits are generally found in

    A) dicots

    B) monocots

    C) gymnosperms

    D) bryophytes

    View Answer play_arrow
  • question_answer257) One gene-one enzyme hypothesis was given by

    A) Mendel

    B) Darwin

    C) Robert Hook

    D) Beadle and Tatum

    View Answer play_arrow
  • question_answer258) Cell wall of gram positive bacteria is made up of

    A) murein

    B) cellulose

    C) lipid and protein

    D) cellulose and lipid

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  • question_answer259) Which one of the following is a monocarpic plant?

    A) Pear

    B) Citrus

    C) Mango

    D) Bambusa

    View Answer play_arrow
  • question_answer260) Megasporophyll of Cycas is equivalent to

    A) stamen

    B) sepal

    C) petal

    D) carpel

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  • question_answer261) The term leptome is used for

    A) xylem

    B) phloem

    C) endodermis

    D) pericycle

    View Answer play_arrow
  • question_answer262) The formation of fruits without fertilization is called

    A) polyspory

    B) parthenogenesis

    C) polyembryony

    D) parthenocarpy

    View Answer play_arrow
  • question_answer263) An alga which is rich in proteins is

    A) Ulothrix

    B) Spirogyra

    C) Nostoc

    D) Chlorella

    View Answer play_arrow
  • question_answer264) Vivipary is seen in

    A) mangroves

    B) xerophytes

    C) hydrophytes

    D) mesophytes

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  • question_answer265) Which one of the following is a gymnosperm

    A) Mango

    B) Walnut

    C) Funaria

    D) Chilgoza

    View Answer play_arrow
  • question_answer266) Mycorrhiza helps in

    A) respiration

    B) water absorption

    C) nutrient absorption

    D) phosphate absorption

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  • question_answer267) Bracts enclosing a cluster of flowers are known as

    A) bracteate

    B) involucre

    C) petaloid

    D) polysepalous

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  • question_answer268) In Funaria, the number of peristomial teeth is

    A) 6

    B) 10

    C) 16

    D) 32

    View Answer play_arrow
  • question_answer269) The lateral roots originate from

    A) exodermis

    B) endodermis

    C) pericycle

    D) vascular bundles

    View Answer play_arrow
  • question_answer270) Role of calyx and corolla in fruit formation is

    A) promotory

    B) ineffective

    C) essential

    D) all of these

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  • question_answer271) Separation of linked genes is called

    A) linkage

    B) segregation

    C) crossing over

    D) genetic mutation

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  • question_answer272) Anti-viral substance is

    A) bacteria

    B) antibody

    C) antigen

    D) interferon

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  • question_answer273) The enzyme which is used for replication is

    A) DNA ase

    B) aldol ase

    C) RNA polymerase

    D) DNA polymerase

    View Answer play_arrow
  • question_answer274) \[{{C}_{4}}\]-cycle is found in

    A) fir

    B) mango

    C) sugarcane

    D) none of these

    View Answer play_arrow
  • question_answer275) RuBP is found in

    A) ETS

    B) Calvin cycle

    C) \[{{C}_{4}}\] plants

    D) Krebs cycle

    View Answer play_arrow
  • question_answer276) Incipient nucleus is found in

    A) myxophyceae

    B) phaeophyceae

    C) rhodophyceae

    D) chlorophyceae

    View Answer play_arrow
  • question_answer277) Last electron receptor in respiration is

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

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

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

    D) NADH

    View Answer play_arrow
  • question_answer278) Diadelphous condition is found in

    A) rosaceae

    B) papilionaceae

    C) leguminosae

    D) cucurbitaceae

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  • question_answer279) Which of the following algae is parasitic?

    A) Nostoc

    B) Rhodomenia

    C) Cephaleuros

    D) Polysiphonia

    View Answer play_arrow
  • question_answer280) Glycolysis occurs in

    A) grana

    B) stroma

    C) cytosol

    D) mitochondria

    View Answer play_arrow
  • question_answer281) Nucleosides have

    A) purine + pyrimidine

    B) purine or pyrimidine + sugar

    C) purine + sugar + phosphate

    D) purine + pyrimidine + phosphate

    View Answer play_arrow
  • question_answer282) Cladodes are found in

    A) Asparagus

    B) Opuntia

    C) Parkmsonia

    D) Psidium guajava

    View Answer play_arrow
  • question_answer283) R.Q. (respiratory quotient) is less than 1 in

    A) fat

    B) glucose

    C) fructose

    D) organic acid

    View Answer play_arrow
  • question_answer284) Blue-green algae has

    A) chlorophyll b

    B) xanthophyll

    C) phycocyanin

    D) fucoxanthin

    View Answer play_arrow
  • question_answer285) Connecting link between glycolysis and Krebs cycle is

    A) PGA

    B) ketone

    C) aldehyde

    D) acetyl-Co A

    View Answer play_arrow
  • question_answer286) Which of the following fibres is not a plant product?

    A) flax

    B) cotton

    C) hemp

    D) silk

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  • question_answer287) Which one of the following is not commercially produced by yeast?

    A) enzyme

    B) vitamin

    C) hormone

    D) riboflavin

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  • question_answer288) Alcoholic fermentation takes place in the presence of

    A) maltase

    B) zymnse

    C) amylase

    D) invertase

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  • question_answer289) Which one of the following does not grow in artificial media?

    A) TMV

    B) bacteria

    C) yeast

    D) Rhizopus

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  • question_answer290) The RNA like particle, which causes disease is

    A) virion

    B) viroid

    C) prion

    D) mycoplasma

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  • question_answer291) Phytochrome is found in

    A) algae

    B) flowering plants

    C) fungi

    D) vascular cryptogams

    View Answer play_arrow
  • question_answer292) Replication of DNA takes place during

    A) S-phase

    B) prophase

    C) metaphase

    D) anaphase

    View Answer play_arrow
  • question_answer293) Ribosomes are particles about \[200\overset{\text{o}}{\mathop{\text{A}}}\,\] units in diameter consisting of protein and RNA. The percentage of protein and RNA respectively is:

    A) 60% and 40%

    B) 40% and 60%

    C) 80% and 20%

    D) 50% and 50%

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  • question_answer294) Which of the following process takes place in mitochondria?

    A) photolysis

    B) photophosphorylation

    C) carboxylation

    D) oxidative phosphorylation

    View Answer play_arrow
  • question_answer295) Fluid mosaic model of cell membrane was given by

    A) Beadle and Tatum

    B) Singer and Nicolson

    C) Watson and Crick

    D) Robertson and Miller

    View Answer play_arrow
  • question_answer296) Late blight of potato is caused by

    A) Rhizopus

    B) Ustilago

    C) Altemnria solani

    D) Phytopthorn infestens

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  • question_answer297) Cell membrane is composed of

    A) protein

    B) phospholipid

    C) carbohydrate

    D) lipid and potein

    View Answer play_arrow
  • question_answer298) Binomial nomenclature was given by

    A) Darwin

    B) Lamarck

    C) Linnaeus

    D) Theophrastus

    View Answer play_arrow
  • question_answer299) Genetic material of virus is

    A) RNA

    B) DNA

    C) carbohydrate

    D) either RNA or DNA

    View Answer play_arrow
  • question_answer300) Suicidal bags are

    A) lysosomes

    B) golgi bodies

    C) ribosomes

    D) chloroplast

    View Answer play_arrow


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