# Solved papers for RAJASTHAN ­ PMT Rajasthan - PMT Solved Paper-2006

### done Rajasthan - PMT Solved Paper-2006

• question_answer1) Dimension of relative density is:

A) $[M{{L}^{2}}]$

B) $[M{{L}^{-3}}]$

C) dimension less

D) $[{{M}^{2}}{{L}^{-6}}]$

• question_answer2) A ball is thrown from height h and another from $2h$ The ratio of time taken by the two balls to reach ground is:

A) $1:\sqrt{2}$

B) $\sqrt{2}:1$

C) 2 : 1

D) 1 : 2

• question_answer3) A ball is thrown upwards, it takes 4 s to reach back to the ground. Find its initial velocity :

A) $30\,m{{s}^{-1}}$

B) $10\,m{{s}^{-1}}$

C) $40\,m{{s}^{-1}}$

D) $20\,m{{s}^{-1}}$

• question_answer4) A man is at a height of 100 m. He sees a car which makes an angle of $\frac{\pi }{6}$with mans position. If the car moves to a point where angle is$\frac{\pi }{3,}$ what is the distance moved by it?

A) $\left( \frac{100}{\sqrt{3}} \right)m$

B) $(200\sqrt{3})m$

C) $\left( \frac{200}{\sqrt{3}} \right)m$

D) $\left( \frac{150}{\sqrt{3}} \right)m$

• question_answer5) A body of mass 0.1 kg attains a velocity of $10\,M{{s}^{-1}}$ in 0.1 s. The force acting on the body is :

A) 10 N

B) 0.01 N

C) 0.1 N

D) 100 N

• question_answer6) If force$\mathbf{\vec{F}=5\vec{i}+3\vec{j}+4\vec{k}}$makes a displacement of $\mathbf{\vec{s}=}6\mathbf{\vec{i}}-5\mathbf{\vec{k}}$ work done by the force is :

A) 10 unit

B) $122\sqrt{5}$ unit

C) $5\sqrt{122}$ unit

D) 20 unit

• question_answer7) The angular velocity of second hand, of a clock is :

A) $\left( \frac{\pi }{6} \right)rad\,{{s}^{-1}}$

B) $\left( \frac{\pi }{60} \right)rad\,{{s}^{-1}}$

C) $\left( \frac{\pi }{30} \right)rad\,{{s}^{-1}}$

D) $\left( \frac{\pi }{15} \right)rad\,{{s}^{-1}}$

• question_answer8) A body is moving in a circular path with acceleration a. If its velocity gets doubled, find the ratio of acceleration after and before the change :

A) 1 : 4

B) $\frac{1}{4}:1$

C) 2 : 1

D) 4 : 1

• question_answer9) Acceleration due to gravity at earths surface is $g\,rn{{s}^{-2}}.$ Find the effective value of gravity at a height of 32 km from se. a level: $({{R}_{e}}=6400\,km)$

A) $0.5\,g\,m{{s}^{-2}}$

B) $0.99\,g\,m{{s}^{-2}}$

C) $1.01\,g\,m{{s}^{-2}}$

D) $0.90\,g\,m{{s}^{-2}}$

• question_answer10) Near earths surface, time period of a stellite is 4 h. Find its time period at height 4R from the centre of earth :

A) $32\,h$

B) $\left( \frac{1}{8\sqrt[3]{2}} \right)h$

C) $8\sqrt[3]{2}$

D) $16\,h$

• question_answer11) Amplitude of a pendulum is 60 mm and angular velocity is 2 rad s-1. Find its velocity if its displacement is 22 mm:

A) $120\,\,mm\,{{s}^{-1}}$

B) $113\,\,mm\,{{s}^{-1}}$

C) $115\,\,mm\,{{s}^{-1}}$

D) $125\,\,mm\,{{s}^{-1}}$

• question_answer12) If we hollow the ball of pendulum, and fill it with sand, what would be the effect of change on the centre of mass ?

A) it would distorted

B) its value will decrease only

C) its value will increase only

D) its value will first decrease and then increase

• question_answer13) If n drops of potential V merge, find new potential on the big drop.

A) ${{n}^{2/3}}V$

B) ${{n}^{1/3}}V$

C) $nV$

D) ${{V}^{n/3}}$

• question_answer14) If relation between distance and time is $s=a+bt+c{{t}^{2}},$find initial velocity and acceleration :

A) $b+2ct,\,2c$

B) $b,\,\,2\,c$

C) $\,2\,c,\,b$

D) $\,b+2c,\,2c$

• question_answer15) If electric flux varies according to $\phi =3{{t}^{2}}+4t+2,$ find emf at t = 2 s:

A) 22V

B) 18 V

C) 20 V

D) 16 V

• question_answer16) The means of energy transfer in vacuum is:

B) convection

D) conduction

• question_answer17) One filament takes 10 min to heat a kettle and another takes 15 min. If connected in parallel they combindly take ............ min to heat the same kettle:

A) 6

B) 12.5

C) 25

D) 7.5

• question_answer18) Efficiency of engine working at $40{}^\circ C$, $20{}^\circ C$ is:

A) 0.064%

B) 0.64%

C) 6.4%

D) 6.4%

• question_answer19) If there is a straight line parallel to volume axis in a P-V diagram, then it is a .........graph.

A) isochoric

B) isobaric

C) isothermal

D) None of these

A) ${{P}^{\gamma }}V=$constant

B) $P{{V}^{\gamma -1}}=$constant

C) $PV=$constant

D) all of these

• question_answer21) An object is placed at a distance of 10 cm from a convex lens of power 5D. Find the position of the image :

A) - 20 cm

B) 30 cm

C) 20 cm

D) - 30 cm

• question_answer22) If separation between screen and source is in cresed by 2%, what would be the effect on the intensity?

A) Increases by 4%

B) Increases by 2%

C) Decreases by 2%

D) Decreases by 4%

• question_answer23) Magnification of a telescope having focal lengths of objective lens and eye piece${{f}_{0}}$and${{f}_{e,}}$ respectively is:

A) $\frac{{{f}_{e}}}{{{f}_{0}}}$

B) $\frac{{{f}_{0}}}{{{f}_{e}}}$

C) $\frac{1-{{f}_{0}}}{{{f}_{e}}}$

D) $\frac{{{f}_{0}}}{{{f}_{e}}-1}$

• question_answer24) Maximum and minimum intensities obtained by. Two sources having intensities $4I$ and $I$are:

A) $5I,-3I$

B) $9I,I$

C) $9I,-I$

D) $5I,3I$

• question_answer25) An equilateral prism has$\mu =\sqrt{3.}$Its angle of minimum deviation will be :

A) $30{}^\circ$

B) ${{60}^{\text{o}}}$

C) ${{120}^{\text{o}}}$

D) ${{45}^{\text{o}}}$

• question_answer26) . Separation between slits is halved and between secreen and slits is doubled. Final fringe width if original is w:

A) w

B) 9w

C) 4w

D) 2w

• question_answer27) A source is approaching a stationary observer with velocity${{\left( \frac{1}{10} \right)}^{th}}$that of sound. Ratio of observed and real frequencies will be :

A) $\frac{9}{10}$

B) $\frac{11}{10}$

C) $\frac{10}{11}$

D) $\frac{10}{9}$

• question_answer28) A source and observer are approaching each other with 50 ms-1 velocity. What will be original frequency if the observer receives 400 cycle/s?

A) 300 cycle/s

B) 320 cycle/s

C) 340 cycle/s

D) 330 cycle/s

• question_answer29) Distance between successive compression and rarefaction is 1 m and velocity of sound is 360 ms-1. Find frequency :

A) 180 Hz

B) 45 Hz

C) 120 Hz

D) 90 Hz

• question_answer30) A cube has point charges of magnitude -q at all its vertices. Electric field at the centre of the cube is:

A) $\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{6q}{3{{a}^{2}}}$

B) $\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{8q}{{{a}^{2}}}$

C) zero

D) $\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{-8q}{{{a}^{2}}}$

• question_answer31) Two conductors having current in opposite directions............

A) attract each other

B) repel each other

C) do not affect each other

D) effect depends on the material of wire

• question_answer32) If a capacitor of capacitance$10\mu F$has potential difference of 100 V across its ends, the energy stored in it is:

A) 0.05 J

B) 1 J

C) 0.005 J

D) 0.1 J

• question_answer33) Five resistances of resistance$R\,\Omega$ are there, 3 are connected in parallel and are joined to them in series. Find resultant resistance:

A) $\left( \frac{3}{7} \right)R\,\Omega$

B) $\left( \frac{7}{3} \right)R\,\Omega$

C) $\left( \frac{7}{8} \right)R\,\Omega$

D) $\left( \frac{8}{7} \right)R\,\Omega$

• question_answer34) If reading of an ammeter is 10 A, the peak value of current is:

A) $\frac{10}{\sqrt{2}}A$

B) $\frac{5}{\sqrt{2}}A$

C) $20\sqrt{2}A$

D) $10\sqrt{2}A$

• question_answer35) If impedance is $\sqrt{3}$ times of resistance, find phase difference :

A) zero

B) $30{}^\circ$

C) $60{}^\circ$

D) data is incomplete

• question_answer36) A bar magnet is dropped between a current carrying coil. What would be its acceleration?

A) g downwards

B) greater than g downwards

C) less than g downwards

D) bar will be stationary

• question_answer37) If the door of refrigerator is opened while connected to supply, the room gets :

A) cooled

B) heated

C) no effect

D) temperature is not given

• question_answer38) ${{M}_{P}}$ and ${{M}_{N}}$ are masses of proton and neutron, respectively, at rest. If they combine to form deuterium nucleus. The mass of the nucleus will be:

A) less than ${{M}_{P}}$

B) less than $({{M}_{P}}+{{M}_{N}})$

C) less than $({{M}_{P}}+2{{M}_{N}})$

D) greater than $({{M}_{P}}+2{{M}_{N}})$

• question_answer39) If resistance of wire at $50{}^\circ C$ is $5R\,\Omega$ and at $100{}^\circ C$ is $6R\,\Omega .$ find resistance of $0{}^\circ C$ :

A) $0R\,\,\Omega$

B) $2R\,\,\Omega$

C) $3R\,\,\Omega$

D) $4R\,\,\Omega$

• question_answer40) The values $+\frac{1}{2}$ and $-\frac{1}{2}$ of spin quantum number show:

A) rotation of ${{e}^{-}}$ clockwise and anticlockwise direction respectively

B) rotation of ${{e}^{-}}$ anticlockwise and clockwise directions respectively

C) rotation in any direction according to convention

D) none of the above

• question_answer41) If a sample of 16 g radioactive substance disintegrate to 1 g in 120 days, then what will be the half-life of the sample?

A) 15 days

B) 7.5 days

C) 30 days

D) 60 days

• question_answer42) If phosphorus and arsenic impurities are added to a semiconductor, then it becomes:

A) transistor

B) p-type semiconductor

C) amplifier

D) n-type semiconductor

• question_answer43) If velocity of a charged particle is doubled and strength of magnetic field is halved, then radius becomes :

A) 8 times

B) 2 times

C) 4 times

D) 3 times

• question_answer44) If kinetic energy is doubled, find fractional change in momentum :

A) $\sqrt{2}$

B) $2\sqrt{2}$

C) $\frac{1}{\sqrt{2}}$

D) $\frac{1}{2\sqrt{2}}$

• question_answer45) At what temperature volume of an ideal gas at $0{}^\circ C$ becomes triple?

A) $546{}^\circ C$

B) $182{}^\circ C$

C) $819{}^\circ C$

D) $646{}^\circ C$

• question_answer46) If maximum height and range of a projectile are same, what is the angle of projection?

A) $30{}^\circ$

B) $76{}^\circ$

C) $50{}^\circ$

D) $90{}^\circ$

• question_answer47) If wavelength $\lambda =5400\overset{\text{o}}{\mathop{\text{A}}}\,$ is threshold value for a certain metal, then its work function would be:

A) 2.3 eV

B) 0.025 eV

C) 10 eV

D) 0.23 eV

• question_answer48) If $\lambda ={{10}^{-10}}$ changes to $\lambda =0.5\times {{10}^{-10}}$ m, find energy difference $(\Delta E)$ give to the particle:

A) $\Delta E$ is equal to$\Delta E{{\left( \frac{1}{4} \right)}^{th}}$of initial energy

B) $\Delta E$ is equal to ${{\left( \frac{1}{2} \right)}^{th}}$of initial energy

C) $\Delta E$ is equal to twice of initial energy

D) $\Delta E$ is equal to initial energy

• question_answer49) If inductance of a coil is L and current passing through it is i, find energy stored in it:

A) $L{{i}^{2}}$

B) $4L{{i}^{2}}$

C) $Li$

D) $\frac{1}{2}L{{i}^{2}}$

• question_answer50) A fan is moving around its axis. What will be its motion regarded as?

A) Pure rolling

B) Rolling with slipping

C) Skidding

D) Pure rotations

• question_answer51) If ${{a}_{r}}$and${{a}_{t}}$ represent radial and tangential accelerations, the motion of a panicle will be uniformly circular if:

A) ${{a}_{r}}=0$and ${{a}_{t}}=0$

B) ${{a}_{r}}=0$but${{a}_{t}}\ne 0$

C) ${{a}_{r}}=0$but${{a}_{t}}=0$

D) ${{a}_{r}}\ne 0$and${{a}_{t}}\ne 0$

• question_answer52) Radius of orbit of satellite of earth is R. Its kinetic energy is proportional to :

A) $\frac{1}{R}$

B) $\frac{1}{\sqrt{R}}$

C) $R$

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

• question_answer53) The radius R of the soap bubble is doubled under isothermal condition. If T be the surface tension of soap bubble, the required surface energy in doing so is given by :

A) $32\pi {{R}^{2}}T$

B) $24\pi {{R}^{2}}T$

C) $8\pi {{R}^{2}}T$

D) $4\pi {{R}^{2}}T$

• question_answer54) Mercury boils at $367{}^\circ C.$ However, mercury thermometers are made such that they can measure temperature upto$500{}^\circ C.$ This is done by:

A) maintaining vacuum above mercury column in the stem of the thermometer

B) filling nitrogen gas at high pressure above the mercury column

C) filling oxygen gas at high pressure above the mercury column

D) filling nitrogen gas at low pressure above the mercury column

• question_answer55) Two similar coils are kept mutually perpendicular such that their centres coincide. At the centre, find the ratio of the magnetic field due to one coil and the resultant magnetic field through both coils, if the same current is flown:

A) $1:\sqrt{2}$

B) $1:2$

C) 1: 2

D) $\sqrt{3}:1$

• question_answer56) A prism of refractive index $\sqrt{2}$ has a refracting angle of $60{}^\circ$. Ai what angle a ray must be incident on it so that it suffers a minimum deviation?

A) $45{}^\circ$

B) $60{}^\circ$

C) $90{}^\circ$

D) $180{}^\circ$

• question_answer57) A cone filled with water is revolved in a vertical circle of radius 4 m and the water does not fall down. What must be the maximum period of revolution?

A) 2 s

B) 4 s

C) 1 s

D) 6 s

• question_answer58) A transparent cube of 15 cm edge contains a small air bubble. Its apparent depth when viewed through one face is 6 cm and when viewed through the opposite face is 4 cm. Then the refractive index of the material of the cube is :

A) 2.0

B) 2.5

C) 1.6

D) 1.5

• question_answer59) Light waves travel in vacuum along the y-axis. Which of the following may represent the wave front?

A) $y=$constant

B) $x=$ constant

C) $z=$ constant

D) $x+y+z=$ constant

• question_answer60) A capacitor is connected to a cell of emf E having some internal resistance r. The potential difference across the:

A) cell is < E

B) cell is E

C) capacitor is > E

D) capacitor is < E

• question_answer61) The length, breadth and thickness of a block are given by $l$= 12cm. b = 6 cm and t = 2.45 cm. The volume of the block according 10 the idea of significant figures should be:

A) $1\times {{10}^{2}}\,c{{m}^{3}}$

B) $2\times {{10}^{2}}\,c{{m}^{3}}$

C) $1.763\times {{10}^{2}}\,c{{m}^{3}}$

D) none of these

• question_answer62) Five particles of mass 2 kg are attached to the rim of a circular disc of radius 0.1 m and negligible mass. Moment of inertia of the system about the axis passing through the centre of the disc and perpendicular to its plane is:

A) $1\,kg{{m}^{2}}$

B) $0.1\,kg{{m}^{2}}$

C) $2\,kg{{m}^{2}}$

D) $0.2\,kg{{m}^{2}}$

• question_answer63) The radius of the convex surface of plano-convex lens is 20 cm and the refractive index of the material of the lens is 1.5. The focal length is:

A) 30 cm

B) 50 cm

C) 20 cm

D) 40 cm

• question_answer64) An ice-cube of density $900\,kg/{{m}^{3}}$ is floating in water of density $1000\,kg/{{m}^{3}}$. The percentage of volume of ice-cube outside the water is:

A) 20%

B) 35%

C) 10%

D) 25%

• question_answer65) A sphere of diameter 0.2 m and mass 2 kg is rolling on an inclined plane with velocity v = 0.5 m/s. The kinetic energy of the sphere is:

A) 0.1 J

B) 0.3 J

C) 0.5 J

D) 0.42 J

• question_answer66) An electron moves at right angle to a magnetic field of $1.5\times {{10}^{-2}}T$ with a speed of $6\times {{10}^{7}}\,m/s$. If the specific charge of the electron is $1.7\,\times {{10}^{11}}\,C/kg$. the radius of the circular path will be:

A) 2.9 cm

B) 3.9 cm

C) 2.35 cm

D) 2 cm

• question_answer67) If work function of a metal is 4.2 eV, the cut off wavelength is :

A) $8000\overset{\text{o}}{\mathop{\text{A}}}\,$

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

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

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

• question_answer68) A particle is executing the motion $x=a\,\cos (\omega t-\theta ).$ The maximum velocity of the particle is :

A) $a\,\omega \,\cos$

B) $a\,\omega$

C) $a\,\omega \,\sin$

D) none of these

• question_answer69) A particle is executing two different simple harmonic motions, mutually perpendicular, of different amplitudes and having phase difference of $\pi /2.$ The path of the particle will be:

A) circular

B) straight line

C) parabolic

D) elliptical

• question_answer70) Equations of motion in the same direction are given by: ${{y}_{1}}=2a\,\sin (\omega t-kx)$ ${{y}_{2}}=2a\,\sin (\omega t-kx-)$ The amplitude of the medium particle will be:

A) $2a\,\cos \,$

B) $\sqrt{2}a\,\cos \,$

C) $4\,a\,\cos \frac{\,}{2}$

D) $\sqrt{2}\,a\,\cos \frac{\,}{2}$

• question_answer71) Figure shows three points A, B and C in a region of uniform electric field $\mathbf{\vec{E}}\mathbf{.}$ The line AB is perpendicular and BC is parallel lo the Field lines. Then which of the following holds good?

A) ${{V}_{A}}={{V}_{B}}={{V}_{C}}$

B) ${{V}_{A}}={{V}_{B}}>{{V}_{C}}$

C) ${{V}_{A}}={{V}_{B}}<{{V}_{C}}$

D) ${{V}_{A}}>{{V}_{B}}={{V}_{C}}$ where ${{V}_{A}}>{{V}_{B}}$ Vg and ${{V}_{C}}$ represent the electric potential at points A. B and C respectively.

• question_answer72) The potential difference between points A and B is:

A) $\frac{20}{7}V$

B) $\frac{40}{7}V$

C) $\frac{10}{7}V$

D) zero

• question_answer73) A short linear object of length b lies along the axis of a concave mirror of focal length $f$ at a distance $u$ from the pole of mirror, what is the size of image ?

A) $\left( \frac{f}{u-f} \right)b$

B) ${{\left( \frac{f}{u-f} \right)}^{2}}b$

C) $\left( \frac{f}{u-f} \right){{b}^{2}}$

D) $\left( \frac{f}{u-f} \right)$

• question_answer74) A closed organ pipe and an open organ pipe are tuned to the same fundamental frequency. What is the ratio of their lengths?

A) 1 : 2

B) 2 : 1

C) 2 : 3

D) 4 : 3

• question_answer75) Regarding a semiconductor which one of the following is wrong?

A) There are no free electrons at room temperature

B) There are no free electrons at 0 K

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

D) The charge carriers are electrons and holes

• question_answer76) A steel scale measures the length of a copper wire as 80.0 cm, when both are at $20{}^\circ C$, the calibration temperature for the scale. What would the scale read for the length of the wire when both are ac $40{}^\circ C$? Given: $\alpha$ for steel $=11\times {{10}^{-6}}{{/}^{\text{o}}}C$ and $\alpha$ for $Cu=17\times {{10}^{-6}}\,{{/}^{\text{o}}}C$:

A) 80.0096 cm

B) 80.0272 cm

C) 1 cm

D) 25.2 cm

• question_answer77) A tank is filled with water upto height H. When a hole is made at a distance h below the level of water, what will be the horizontal range of water jet?

A) $2\sqrt{h(H-h)}$

B) $4\sqrt{h(H+h)}$

C) $4\sqrt{h(H-h)}$

D) $2\sqrt{h(H+h)}$

• question_answer78) A raft of wood of mass 120 kg floats in water. The weight that can be put on the raft to make it just sink, should be : $({{d}_{raft}}=600\,kg/{{m}^{3}})$

A) 80 kg

B) 50 kg

C) 60 kg

D) 30 kg

• question_answer79) Nuclear fusion is common to the pair:

A) thermonuclear reactor, uranium based nuclear reactor

B) energy production in sun, uranium based nuclear reactor

C) energy production in sun hydrogen bomb

D) disintegration of heavy nuclei hydrogen bomb

• question_answer80) Which of the following statements is true for an n-type semi-conductor?

A) The donor level lies closely below the bottom of the conduction band

B) The donor level lies closely above the top of the valence band

C) The donor level lies at the halfway mark of the forbidden energy gap

D) None of the above

• question_answer81) The minimum wavelength of X-rays emitted by X-ray tube is $0.4125\,\overset{\text{o}}{\mathop{\text{A}}}\,$. The accelerating voltage is :

A) 30 kV

B) 50 kV

C) 80 kV

D) 60 kV

• question_answer82) A monoatomic gas supplied the heat Q very slowly keeping the pressure constant. The work done by the gas will be :

A) $\frac{2}{3}Q$

B) $\frac{3}{5}Q$

C) $\frac{2}{5}Q$

D) $\frac{1}{5}Q$

• question_answer83) The refractive index of the material of the prism and liquid are 1.56 and 1.32 respectively. What will be the value of  for the following refraction?

A) $\text{sin}\,\ge \frac{13}{11}$

B) $\text{sin}\,\ge \frac{11}{13}$

C) $\text{sin}\,\ge \frac{\sqrt{3}}{2}$

D) $\text{sin}\,\ge \frac{1}{\sqrt{2}}$

• question_answer84) The temperature of the black body increases from T to 2T. The factor by which the rate of emission will increase, is :

A) 4

B) 2

C) 16

D) 8

• question_answer85) A police Jeep is chasing with velocity of 45 km/h a thief in another jeep moving with velocity 153 km/h. Police fires a bullet with muzzle velocity of 180 m/s. The velocity with which it will strike the car of the thief is:

A) 150 m/s

B) 27 m/s

C) 450 m/s

D) 250 m/s

• question_answer86) In a sinusoidal wave, the time required, for a particular point to move from maximum displacement to zero displacement is 0.17 s. The frequency of the wave is:

A) 1.47 Hz

B) 2.94 Hz

C) 0.73 Hz

D) 0.36 Hz

• question_answer87) An LC circuit is in the state of resonance. If $C=0.1\,\pi F$ and $L=0.25\,H,$ neglecting ohmic resistance of circuit, what is the frequency of

A) 1007 Hz

B) 100 Hz

C) 109 Hz

D) 500 Hz

• question_answer88) A person who can see things most clearly at a distance of 10 cm, requires spectacles to enable to see clearly things at a distance of 30 cm. What should be the focal length of the spectacles?

A) 15 cm (concave)

B) 15 cm (convex)

C) 10 cm

D) 0

• question_answer89) The dimensional formula for Youngs modulus is:

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

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

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

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

• question_answer90) When temperature of an ideal gas is increased from $27{}^\circ C$ to $227{}^\circ C$, its $rms$ speed is changed from 400 m/s to ${{v}_{s}}$ The ${{v}_{s}}$ is:

A) 516 m/s

B) 450 m/s

C) 310 m/s

D) 746 m/s

• question_answer91) A bar magnet of magnetic moment M is placed in the magnetic held B. The torque acting on the magnet is:

A) $\mathbf{\vec{M}\times \vec{B}}$

B) $\mathbf{\vec{M}}-\mathbf{\vec{B}}$

C) $\frac{1}{2}\mathbf{\vec{M}}\times \mathbf{\vec{B}}$

D) $\mathbf{\vec{M}}+\mathbf{\vec{B}}$

• question_answer92) A capacitor of capacitance $6\mu F$ is charged upto 100 V. The energy stored in the capacitor is:

A) 0.6 J

B) 0.06 J

C) 0.03 J

D) 0.3 J

• question_answer93) The radius of the orbit of a planet is two rimes that of the earth. The time period of planet is:

A) 4.2 T

B) 2.8 T

C) 5.6 T

D) 8.4 T

• question_answer94) A body falls from a height h = 200 m. The ratio of distance travelled in each 2 s, during t = 0 to t = 6 s of the journey is:

A) 1 : 4 : 9

B) 1 : 2 : 4

C) 1 : 3 : 5

D) 1 : 2 : 3

• question_answer95) To make the frequency double of a spring oscillator, we have to :

A) reduce the mass to one fourth

B) quardruple the mass

C) double the mass

D) half the mass

• question_answer96) A particle executing SHM has amplitude 0.01 m and frequency 60 Hz. The maximum acceleration of particle is :

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

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

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

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

• question_answer97) When a wave travels in a medium the particles displacement is given by the equation y = 0.03 sin n (2t - 0.01 x), where x and y are in metre and r in second. The wavelength of the wave is :

A) 200 m

B) 100 m

C) 20 m

D) 10 m

• question_answer98) In He-Ne laser the most favorable ratio of helium to neon for satisfactory laser action is :

A) 1 : 4

B) 4 : 1

C) 1 : 7

D) 7 : 1

• question_answer99) Find the equivalent resistance between the points A and B:

A) $2\,\Omega$

B) $4\,\Omega$

C) $8\,\Omega$

D) $16\,\Omega$

• question_answer100) A forward biased diode is:

A)

B)

C)

D)

A) Emit electrons

B) Absorb neutrons

C) Emit neutrons

D) Absorb electrons

• question_answer102) Propionic acid and $KOH$ reacts to produce which one of the following?

A) Potassium propionate

B) Propyl alcohol

C) Propionaldehyde

D) Does not react

• question_answer103) What is the effect of dilution on the equivalent conductance of strong electrolyte?

A) Decrease on dilution

B) Remains unchanged

C) Increase on dilution

D) None of die above

• question_answer104) $35.4\,\,mL$ of $HCl$ is required for the neutralization of a solution containing 0.275 g of sodium hydroxide. The normality of hydrochloric add is?

A) $0.97\,\,N$

B) $0.142\,\,N$

C) $0.194\,\,N$

D) $0.244\,\,N$

• question_answer105) When ${{H}_{2}}S$ gas is passed in a metal sulphate solution in presence of$N{{H}_{4}}OH$, a white precipitate is produced. The metal is identified as:

A) $Zn$

B) $Fe$

C) $Pb$

D) $Hg$

• question_answer106) The value of amu is which of the following?

A) $1.57\times {{10}^{-24}}kg$

B) $1.66\times {{10}^{-24}}kg$

C) $1.99\times {{10}^{-23}}kg$

D) $1.66\times {{10}^{-27}}kg$

• question_answer107) The molecule having largest dipole moment among the following is:

A) $CH{{I}_{3}}$

B) $C{{H}_{4}}$

C) $CHC{{l}_{3}}$

D) $CC{{l}_{4}}$

• question_answer108) When calcium acetate is distilled, it will produce which of the following compound?

A) $C{{H}_{3}}COOH$

B) $C{{H}_{3}}CHO$

C) $C{{H}_{3}}COC{{H}_{3}}$

D) All of these

• question_answer109) Which of the following electronic configuration represents noble gas?

A) $n{{s}^{2}}n{{p}^{6}}$

B) $n{{s}^{2}}n{{p}^{5}}$

C) $n{{s}^{2}}n{{p}^{4}}$

D) $n{{s}^{2}}n{{p}^{3}}$

• question_answer110) Sodium pyrophosphate is represented by which of the following formula?

A) $N{{a}_{2}}P{{O}_{4}}$

B) $N{{a}_{4}}{{P}_{2}}{{O}_{5}}$

C) $N{{a}_{4}}{{P}_{2}}{{O}_{7}}$

D) $N{{a}_{2}}{{P}_{2}}{{O}_{5}}$

• question_answer111) Which one of the following can produce hydrogen when treated with metallic sodium?

A) ${{(C{{H}_{3}})}_{2}}NH$

B) $C{{H}_{3}}N{{H}_{2}}$

C) ${{C}_{6}}{{H}_{5}}N{{H}_{2}}$

D) $C{{H}_{3}}CON{{H}_{2}}$

• question_answer112) Which one of the following has unit positive charge and 1 amu mass?

A) Electron

B) Neutron

C) Proton

D) None of these

• question_answer113) What is the co-ordination number of body centred cube?

A) 8

B) 6

C) 4

D) 12

• question_answer114) Which gas is evolved by the treatment of magnesium with very dilute solution of$HN{{O}_{3}}?$

A) ${{N}_{2}}$

B) $N{{O}_{2}}$

C) ${{H}_{2}}$

D) ${{H}_{2}}O$

• question_answer115) Which of the following compound shows aromatic properties?

A) Valine

B) Leucine

C) Serine

D) Tyrosine

• question_answer116) Which one of the following pair shows Buffers solution?

A) $NaCl+NaOH$

B) $C{{H}_{3}}COONa+C{{H}_{3}}COOH$

C) $C{{H}_{3}}COOH+C{{H}_{3}}COON{{H}_{4}}$

D) ${{H}_{2}}S{{O}_{4}}+CuS{{O}_{4}}$

• question_answer117) $PC{{l}_{3}}$ and cold water reacts to produce which of the following?

A) ${{H}_{3}}P{{O}_{3}}$

B) ${{H}_{3}}P{{O}_{2}}$

C) ${{H}_{4}}{{P}_{2}}{{O}_{7}}$

D) ${{H}_{3}}P{{O}_{4}}$

• question_answer118) Which of the following converts carbonyl compounds into hydrocarbons?

A) ${{H}_{2}}/Pt$

B) $LiAl{{H}_{4}}$

C) ${{K}_{2}}C{{r}_{2}}{{O}_{7}}/{{H}_{2}}S{{O}_{4}}$

D) $Zn\text{-}Hg/HCl$

• question_answer119) Which of the following chloride is water insoluble?

A) $HCl$

B) $AgCl$

C) Both $a$ and $b$

D) None of these

• question_answer120) How many neutrons are present in tritium nucleus?

A) 2

B) 3

C) 1

D) 0

• question_answer121) The total number of protons in $10\,\,g$ of calcium carbonate is$({{N}_{0}}=6.023\times {{10}^{23}})$:

A) $3.01\times {{10}^{24}}$

B) $4.06\times {{10}^{24}}$

C) $2.01\times {{10}^{24}}$

D) $3.02\times {{10}^{24}}$

• question_answer122) By dissolving $5\,\,g$ substance in $50\,\,g$ of water, the decrease in freezing point is${{1.2}^{o}}C$. The gram molal depression is${{1.85}^{o}}C$. The molecular weight of substance is:

A) $105.4$

B) $118.2$

C) $137.2$

D) $154.2$

• question_answer123) The high boiling point of water is due to which reason:

A) co-ordinate bonding

B) convalent bond

C) electrostatic force of attraction

D) hydrogen bonding

• question_answer124) Which is correct for an enothermic reaction?

A) $\Delta H$is positive

B) $\Delta H$is negative

C) $\Delta E$is negative

D) $\Delta H=$zero

• question_answer125) Acetonitriles on hydrolysis produce which of the following?

A) Amine

B) Acid

C) Amines

D) Carbonyl compounds

• question_answer126) The radius of hydrogen atom is$0.53\,\,\overset{\text{o}}{\mathop{\text{A}}}\,$. The radius of $_{3}L{{i}^{2+}}$ is of:

A) $1.27\,\,\overset{\text{o}}{\mathop{\text{A}}}\,$

B) $0.17\,\,\overset{\text{o}}{\mathop{\text{A}}}\,$

C) $0.57\,\,\overset{\text{o}}{\mathop{\text{A}}}\,$

D) $0.99\,\,\overset{\text{o}}{\mathop{\text{A}}}\,$

• question_answer127) The purest form of coal is:

A) peat

B) anthracite

C) bituminous

D) lignite

• question_answer128) The correct sequence of hybridisation of methane, ethene and acetylene is:

A) $sp,\,\,s{{p}^{2}},\,\,s{{p}^{3}}$

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

C) $s{{p}^{3}},\,\,s{{p}^{2}},\,\,sp$

D) $s{{p}^{3}},\,\,sp,\,\,s{{p}^{2}}$

• question_answer129) Which phosphorus reacts with $KOH$ solution to produce phosphene gas?

A) White phosphorus

B) Red phosphorus

C) Both (a) and (b)

D) None of these

• question_answer130) Saturated fatty acids are represented by which of the formula?

A) ${{C}_{n}}{{H}_{n}}{{O}_{2}}$

B) ${{C}_{n}}{{H}_{3n}}{{O}_{2}}$

C) ${{C}_{n}}{{H}_{2n+1}}$

D) ${{C}_{n}}{{H}_{2n}}{{O}_{2}}$

• question_answer131) ${{C}_{6}}{{H}_{5}}N{{O}_{2}}\xrightarrow{Sn/HCl}{{C}_{6}}{{H}_{5}}X$ $X$is identified as:

A) $NO$

B) $-N{{H}_{2}}$

C) $NHOH$

D) none of these

• question_answer132) Acetic acid and ${{P}_{2}}{{O}_{5}}$ reacts to produce which of the following?

A) Acetic anhydride

B) Acetaldehyde

C) Phosphoric acid

D) Acetone

• question_answer133) The test for unsaturation is confirmed by the decolourisation of which of the following?

A) Iodine water

B) $CuS{{O}_{4}}$solution

C) Bromine water

D) All of these

• question_answer134) Which of the following element shows maximum valency?

A) Carbon

B) Barium

C) Nitrogen

D) Sulphur

• question_answer135) The volume of oxygen necessary for the complete combustion of $20\,\,L$ of propane is:

A) $40\,\,L$

B) $60\,\,L$

C) $80\,\,L$

D) $100\,\,L$

• question_answer136) Which reaction is used for the preparation of acetophenone?

A) Reimer-Tiemann reaction

B) Wurtz-Fittig reaction

C) Friedel-Crafts reaction

D) Cannizaros reaction

• question_answer137) $0.005\,\,M$ acid solution has$5\,\,pH$. The percentage ionization of acid is:

A) $0.8%$

B) $0.6%$

C) $0.4%$

D) $0.2%$

• question_answer138) PVC polymer can be prepared by which of the monomer?

A) $C{{H}_{3}}CH=C{{H}_{2}}$

B) ${{C}_{6}}{{H}_{5}}CH=C{{H}_{2}}$

C) $C{{H}_{2}}=C{{H}_{2}}$

D) $C{{H}_{2}}=CH-Cl$

• question_answer139) $C{{H}_{3}}COOH$ is weaker acid than${{H}_{2}}S{{O}_{4}}$. It is due to:

A) more ionization

B) less ionization

C) covalent bond

D) electrovalent bond

• question_answer140) The ortho and para hydrogen differ in respect of which of the following?

A) In the molecular weight

B) In the nature of spin of protons

C) In the nature of spin of electrons

D) In the number of protons

• question_answer141) Which of the following is correct according to adsorption isotherm?

A) $\frac{X}{m}\propto p{}^\circ$

B) $\frac{X}{m}\propto p$

C) $\frac{X}{m}\propto {{p}^{1/n}}$

D) All of these

• question_answer142) $_{84}R{{n}^{219}}$ is a member of actinium series. The other member of this series is:

A) $_{89}A{{c}^{225}}$

B) $_{90}T{{h}^{232}}$

C) $_{15}{{P}^{35}}$

D) $_{92}{{U}^{235}}$

• question_answer143) The compressibility factor of an ideal gas is:

A) $1$

B) $2$

C) $4$

D) $zero$

• question_answer144) Soaps can be classified as:

A) carbohydrates

B) ether

C) salts of fatty acids

D) none of these

• question_answer145) In a chemical reaction two reactants takes part. The rate of reaction is directly proportional to the concentration of one of them and inversely proportional to the concentration of the other. The order of reaction is:

A) $zero$

B) $1$

C) $2$

D) $4$

• question_answer146) A gaseous mixture contains $56g$ of${{N}_{3}}$,$44g$ of $C{{O}_{2}}$ and $16g$ of$C{{H}_{4}}$. The total pressure of mixture is $720\,\,mm$ of$Hg$. The partial pressure of methane is:

A) $75\,\,atm$

B) $160\,\,atm$

C) $180\,\,atm$

D) $215\,\,atm$

• question_answer147) The metal used to recover copper from a solution of$CuS{{O}_{4}}$is:

A) $Fe$

B) $He$

C) $Na$

D) $Ag$

A) $-CO-NH-$

B) $-C-N{{H}_{2}}$

C) $SO-NH-$

D) $-CO-N-$

• question_answer149) Phenacetin is used as:

A) antipyretics

B) antiseptics

C) analgesic

D) antimalarials

• question_answer150) Gravity separation process is used for the concentration of:

A) calamine

B) haematite

C) chalcopyrite

D) bauxite

• question_answer151) Which of the following is not an ore of magnesium?

A) Magnesite

B) Dolomite

C) Gypsum

D) Carnallile

• question_answer152) The solubility of$S{{b}_{2}}{{S}_{3}}$, in water is $1.0\times {{10}^{-5}}$ $mol/L$ at$298\,\,K$. What will be its solubility product?

A) $108\times {{10}^{-25}}$

B) $1.0\times {{10}^{-25}}$

C) $144\times {{10}^{-25}}$

D) $126\times {{10}^{-24}}$

• question_answer153) What will be the $pH$ value of $0.05\,\,M$$Ba{{(OH)}_{2}}$ solution?

A) $12$

B) $13$

C) $1$

D) $12.96$

• question_answer154) Which of the following will not react with$NaOH$?

A)

B) ${{C}_{2}}{{H}_{5}}OH$

C) $C{{H}_{3}}CON{{H}_{2}}$

D) $CH{{(CN)}_{3}}$

• question_answer155) Industrial name for${{H}_{2}}{{S}_{2}}{{O}_{7}}$is:

A) Pyrosulphuric acid

B) Marshalls acid

C) Oleum

D) all of the above

• question_answer156) ${{I}_{2}}$dissolves in $K\,\,I$ solution due to the formation of:

A) $K{{I}_{2}}$and${{I}^{-}}$

B) ${{K}^{+}},\,\,{{I}^{-}}$and${{I}_{2}}$

C) $I_{3}^{-}$

D) none of these

A) $CO+{{N}_{2}}$

B) $CO+C{{O}_{2}}+C{{H}_{4}}$

C) $C{{O}_{2}}+{{N}_{2}}$

D) None of these

• question_answer158) Chloroform, when kept open. is oxidized to:

A) $C{{O}_{2}}$

B) $COC{{l}_{2}}$

C) $C{{O}_{2}},\,\,C{{l}_{2}}$

D) none of these

• question_answer159) Iodoform test is not given by:

A) $HCHO$

B) $C{{H}_{3}}CHO$

C) $C{{H}_{3}}COC{{H}_{3}}$

D) ${{C}_{2}}{{H}_{5}}OH$

• question_answer160) In Me Arthur Forest Method, silver is extracted from the solution of b$Na[Ag{{(CN)}_{2}}]$ by the use of:

A) $Fe$

B) $Mg$

C) $Cu$

D) $Zn$

• question_answer161) $IUPAC$name of: $C{{H}_{3}}C{{H}_{2}}C(Br)=CH-Cl$is:

A) 2-bromo-1-chtoro butene

B) 1-chloro-2-bromo butene

C) 3-chioro-2-bromo butene-2

D) none of the above

• question_answer162) Which of the following elements never show positive oxidation number?

A) $O$

B) $Fe$

C) $Ga$

D) $F$

• question_answer163) Which of the following is anhydride of perchloric acid?

A) $C{{l}_{2}}{{O}_{7}}$

B) $C{{l}_{2}}{{O}_{5}}$

C) $C{{l}_{2}}{{O}_{3}}$

D) $HClO$

• question_answer164) Quantitative measurement of nitrogen in an organic compound is done by the method:

A) Berthelot method

B) Belstein method

C) Lassaigne test

D) Kjheldahl method

• question_answer165) Benedicts solution is not reduced by :

A) formaldehyde

B) acetatdehyde

C) glucose

D) acetic anhydride

• question_answer166) Which of the following sulphides is yellow in colour?

A) $Cus$

B) $Cds$

C) $ZnS$

D) $CoS$

• question_answer167) Which of the following element is a metalloid?

A) $Bi$

B) $Sn$

C) $Ge$

D) $C$

• question_answer168) Brown ring in the test of $NO_{3}^{-}$ is formed due to the formation of:

A) $FeS{{O}_{4}}\cdot NO$

B) $[Fe{{(S{{O}_{4}})}_{2}}\cdot NO]{{H}_{2}}O$

C) $F{{e}_{2}}{{(S{{O}_{4}})}_{3}}\cdot NO$

D) none of these

• question_answer169) The vapour pressure will be lowest for:

A) $0.1\,\,M$sugar solution

B) $0.1\,\,M\,\,KCl$ solution

C) $0.1\,\,M\,\,Cu{{(N{{O}_{3}})}_{2}}$ solution

D) $0.1\,\,M\,\,AgN{{O}_{3}}$solution

• question_answer170) Which of the following is a false statement?

A) Fluorine is more electronegative than chlorine

B) Nitrogen has greater $I{{E}_{1}}$ than oxygen

C) Lithium is amphoteric

D) Chlorine is an oxidizing agent

• question_answer171) What is the name of element with atomic number$105$?

A) Kurchatovium

B) Dubnium

C) Nobelium

D) Holmium

• question_answer172) Which kind of fission is favoured by sunlight?

A) Heterolytic fission

B) Homolytic fission

C) Both (a) and (b)

D) None of these

• question_answer173) The reagent used in Gatterman Koch aldehyde synthesis is:

A) $Pb/BaS{{O}_{4}}$

B) alkaline$KMn{{O}_{4}}$

C) acidic$KMn{{O}_{4}}$

D) $CO+HCl$

• question_answer174) Which type of isomerism is shown by propanal and propanone?

A) Functional group

B) Metamerism

C) Tautomerism

D) Chain isomerism

A) pressure

B) volume

C) dilution

D) none of these

• question_answer176) Which of the following oxide does not form acidic aqueous solution?

A) ${{N}_{2}}{{O}_{3}}$

B) $N{{O}_{2}}$

C) ${{N}_{2}}{{O}_{5}}$

D) $NO$

• question_answer177) Which of the following is a use of alum?

A) Making explosives

B) Bleaching clothes

C) Water softening

D) All of the above

• question_answer178) The first ionization potential is maximum for:

A) $B$

B) $N$

C) $O$

D) $Be$

• question_answer179) Which of the following salt does not get hydrolyzed in water?

A) $KCl{{O}_{4}}$

B) $N{{H}_{4}}Cl$

C) $C{{H}_{3}}COONa$

D) None of these

• question_answer180) In the reaction:${{H}_{2}}+{{I}_{2}}=2HI$ In a $2\,\,L$ flask 0.4 moles of each ${{H}_{2}}$ and ${{I}_{2}}$ are taken. At equilibrium 0.5 moles of $HI$ are formed. What will be the value of equilibrium constant${{K}_{c}}$?

A) $20.2$

B) $25.4$

C) $0.284$

D) $11.1$

• question_answer181) Blood cells will remain as such in:

A) hypertonic solution

B) hypotonic solution

C) isotonic solution

D) none of the above

• question_answer182) Which among the following elements have lowest value of$I{{E}_{1}}$?

A) $Pb$

B) $Sn$

C) $Si$

D) $C$

• question_answer183) $KI$and $CuS{{O}_{4}}$ solution when mixed, give:

A) $Cu{{I}_{2}}+{{K}_{2}}S{{O}_{4}}$

B) $C{{u}_{2}}{{I}_{2}}+{{K}_{2}}S{{O}_{4}}$

C) ${{K}_{2}}S{{O}_{4}}+C{{u}_{2}}{{I}_{2}}+{{I}_{2}}$

D) ${{K}_{2}}S{{O}_{4}}+Cu{{I}_{2}}+{{I}_{2}}$

• question_answer184) Which of the following is a Lewis base?

A) $NaOH$

B) $N{{H}_{3}}$

C) $BC{{l}_{3}}$

D) All of these

• question_answer185) Wave nature of electrons was demonstrated by:

A) Schrodinger

B) De-Broglie

C) Davisson and Gamier

D) Heisenberg

• question_answer186) Distribution law was given by:

A) Henry

B) Vant Hoff

C) Nernst

D) Ostwald

• question_answer187) When $Cu$ reacts with $AgN{{O}_{3}}$ solution, the reaction takes place is:

A) oxidation of$Cu$

B) reduction of$Cu$

C) oxidation of$Ag$

D) reduction of$NO_{3}^{-}$

• question_answer188) Cetane is a compound which has very good ignition property. Chemically it is:

A) $C{{H}_{3}}{{(C{{H}_{2}})}_{14}}C{{H}_{3}}$

B) ${{(C{{H}_{3}})}_{3}}C{{(C{{H}_{2}})}_{11}}C{{H}_{3}}$

C) ${{C}_{17}}{{H}_{34}}$

D) none of the above

• question_answer189) Aldol condensation will not occur in:

A) $HCHO$

B) $C{{H}_{3}}C{{H}_{2}}CHO$

C) $C{{H}_{3}}COC{{H}_{3}}$

D) $C{{H}_{3}}CHO$

• question_answer190) Which of the following alcohol is used as beverage?

A) Propanol

B) 2-butanol

C) Methanol

D) Ethanol

• question_answer191) The oxidation number of carbon in $C{{H}_{2}}O$ is:

A) $-2$

B) $+2$

C) $0$

D) $+4$

• question_answer192) Which of the following reaction involves oxidation and reduction?

A) $NaBr+HCl\xrightarrow{{}}NaCl+HBr$

B) $HBr+AgN{{O}_{3}}\xrightarrow{{}}AgBr+HN{{O}_{3}}$

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

D) $N{{a}_{2}}O+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}N{{a}_{2}}S{{O}_{4}}+{{H}_{2}}O$

• question_answer193) The electrophile involved in the nitration of benzene is:

A) $N{{O}_{2}}$

B) $NO_{2}^{+}$

C) $NO$

D) $NO_{2}^{-}$

• question_answer194) The correct order of ease of dehydration of following is:

A) $I>II>III$

B) $III>II>I$

C) $I>III>II$

D) $III>I>II$

• question_answer195) Fluorine is the best oxidizing agent because it has:

A) highest electron affinity

B) highest$E_{red}^{\text{o}}$

C) highest$E_{oxid}^{\text{o}}$

D) lowest electron affinity

• question_answer196) The bond order of $O_{2}^{+}$ is the same as in:

A) $N_{2}^{+}$

B) $C{{N}^{-}}$

C) $CO$

D) $N{{O}^{+}}$

• question_answer197) When acetamide reacts with Bra and caustic soda, then we get:

A) acetic acid

B) bromoaceric acid

C) methyl amine

D) ethyl amine

• question_answer198) Bleaching action of $S{{O}_{2}}$ is due to its:

A) oxidizing property

B) acidic property

C) basic property

D) reducing property

• question_answer199) When ${{I}_{2}}$ is passed through $KCl,\,\,KF$ and$KBr$solutions:

A) $C{{l}_{2}}$and $B{{r}_{2}}$ are evolved

B) $C{{l}_{2}}$ is evolved

C) $C{{l}_{2}},\,\,B{{r}_{2}}$and ${{F}_{2}}$ are evolved

D) none of the above

• question_answer200) Which of the following dissolves in hot cone. $NaOH$solution?

A) $Fe$

B) $Zn$

C) $Cn$

D) $Ag$

• question_answer201) The adipose tissue in the skin is found in the:

A) dermis

B) subcutaneous layer

C) Malpighian layer

D) epidermal layer

• question_answer202) In horses, rabbits, hares, the cellulose gets digested in the :

A) caecum

B) stomach

C) appendix

D) rumen

• question_answer203) The process of breathing is controlled by

A) spinal cord

B) cerebellum

C) medulla oblongata

D) hypothalamus

• question_answer204) A person with type A blood group may safely receive a transfusion of :

A) type AB

B) type A and type O

C) type A and type AB

D)

• question_answer205) If a man who is colour blind marries a woman who is pure normal for colour vision, the chances of their sons having colour blindness is :

A) 100%

B) 50 : 50

C) 0% (zero)

D) 75 : 25

• question_answer206) Brachydactyly is due to :

A) dominant gene on the autosome

B) recessive gene on the aulosomc

C) dominant gene on the sex chromosome

D) none of the above

• question_answer207) The cause of Cat-cry syndrome is due to:

A) loss of a segment of X-chromosome

B) loss of a segment of 5th chromosome

C) loss of segment of Y-chromosome

D) none of the above

• question_answer208) Lateral roots are originated from :

A) cortex

B) pericycle

C) endodermis

D) pith

• question_answer209) What will be the sequence of nucleorides in m-RNA if DNA have ATTGGC sequence?

A) TAAGGG

B) UGATCA

C) ATAGCG

D) UAACCG

• question_answer210) Parasexuality is involved with:

A) fusion of gamete and protoplast

B) fusion of male gamete with secondary nucleus

C) fusion of protoplast

D) fusion of male and female gamete

• question_answer211) How many types of gametes may be produced by genotype D/d: E/e:F/f ?

A) 27

B) 8

C) 3

D) 6

• question_answer212) In which of the following pyrenoids are present?

A) Marchantia

B) Riccia

C) Anthoceros

D) All of these

• question_answer213) Liquid part of coconut is called:

A) male gametophyte

B) nucellus

C) endosperm

D) embryo

• question_answer214) Kaziranga is associated with :

A) Rhinoceros

B) tigers

C) birds

D) lions

• question_answer215) The red colour of red sea is due to which of the following blue-green algae?

A) Chlamydomonas nivalis

B) Anabaena

C) Microcystis

D) Trichodesmium

• question_answer216) The function of restriction enzyme is :

A) cleavages of protein

B) cleavages of DNA

C) cleavages of fat

D) cleavages of starch

A) calcium oxide

B) calcium oxalate

C) calcium carbonate

D) calcium chloride

• question_answer218) The algae used in space research is :

A) Cephaleuros

B) Gelidium

C) Chlorella

D) Gracilaria

B) Incomplete dominance

C) Dominance

D) Segregation of alleles

• question_answer220) Sunnhemp is obtained from :

A) Crotolaria juncea

B) Linum usitatiseimum

C) Corchorus capsularis

D) None of the above

• question_answer221) 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)

• question_answer222) Which of the following follows Chargaff rule?

A) $\text{A}\,\text{+}\,\text{G}\,\text{=}\,\text{T}\,\text{+}\,\text{C}$

B) $\text{A}\,\,\text{=}\,\,\text{C}$

C) $G\,\,\text{=}\,\,T$

D) $\frac{\text{A+T}}{\text{G}\,\text{+}\,\text{C}}\text{=1}$

• question_answer223) The endosperm of gymnosperm is :

A) haploid

B) diploid

C) triploid

D) tetraploid

• question_answer224) Which type of movement is present in Mimosa pudica?

A) Nycnastic

B) Seismonasric

C) Chemonastic

D) Phototrophic

• question_answer225) Respiratory roots and viviparous reproduction are the characteristic of:

A) hydrophytes

B) xerophytes

C) mesophytes

D) mangroves

• question_answer226) Amphivasal vascular bundle possess :

A) xylem around phloem

B) phloem around xylem

C) phloem on both sides of xylem

D) phloem towards centre and xylem towards periphery

• question_answer227) During development of embryo in archegonium of Bryophyta its posterior part form protective embryo cover which is called :

A) calyptra

B) paraphysis

C) apophysis

D) hypophysis

• question_answer228) Which of the following is the example of structural protein?

A) Myosin

B) Collagen

C) Keratin

D) All of these

• question_answer229) Infectious stage of Plasmodium is :

A) ookinece

B) sporozoite

C) oocyst

D) gametocyts

• question_answer230) Nematoblast of Hydra are :

A) sensory

B) complicated

C) with nematocyst apparatus

D) all of the above

• question_answer231) In Krebs cycle formation of:

A) 34 ATP takes place

B) 38 ATP takes place

C) 15 ATP from each acetyl Co-A takes place

D) 12 ATP from each acetyl Co-A takes place

• question_answer232) Which of the protozoan is responsible for kala azar disease?

A) Trypanosoma

B) Giardia

C) Monocystis

D) Leishmania

• question_answer233) Hardest part in animal body is :

A) bone

B) hair

C) dentine

D) enamel

• question_answer234) In which direction cristae of rabbit ear helps in maintaining balance?

A) Circular position of longitudinal axis of semicircular canals

B) Transverse position of longitudinal axis of semicircular canals

C) Parallel to longitudinal axis of semicircular canals

D) All of the above

• question_answer235) Function of thyroxin hormone is :

A) to grow

B) to develop

C) self immunization

D) to control metabolism

• question_answer236) The number of chromosomes becomes half in :

A) anaphase-$\text{I}$

B) anaphase-$\text{II}$

C) telophase-$\text{I}$

D) telophase-$\text{H}$

• question_answer237) ${{O}_{2}}$ does not evolved in photosynthesis of :

A) BGA

B) green algae

C) bacteria

D) autotrophic plant

A) desert

B) tropical forest

C) deciduous forest

D) tundra

A) diacetyl morphine

B) triacetyl morphine

C) letra acetyl morphine

D) mono acetyl morphine

A) more ${{O}_{2}}$ and less $C{{O}_{2}}$

B) less ${{O}_{4}}$ and more $C{{O}_{3}}$

C) more temperature and less ${{O}_{2}}$

D) more humidity and less temperature

• question_answer241) Which of the following is the result of double fertilization?

A) Cotyledon

B) Nucellus

C) Endosperm

D) None of these

• question_answer242) Who discovered the super bugs?

A) H.G. Khorana

B) Dilip Sah

C) Anand Mohan Chakarwarty

D) Robert Hooke

• question_answer243) Book lungs are the respiratory organs in :

A) protozoans

B) cnidarians

C) arthropods

D) amphibians

• question_answer244) Which is the function of nor-epinephrin?

A) Increase blood pressure

B) Urine formation

D) None of the above

• question_answer245) 45. Phenomenon of industrial melanism demonstrates :

A) reproductive isolation

B) genetic isolation

C) natural selection

D) geographical isolation

• question_answer246) Primary acceptor of $C{{O}_{2}}$ in photosynthesis is:

A) phosphoric acid

B) ribulose phosphate

C) glucose

D) ribulose 1, 5 biphosphate

• question_answer247) In the following how the sap wood is converted into heart wood?

A) By degeneration of protoplast of living cells

B) Tylosis formation

C) By deposition of resins, oil, gums

D) All of the above

• question_answer248) The difference in phloem of gymnosperms and angiosperms is due to :

A) parenchyma

B) sieve cell

C) companion cell

D) fibres

• question_answer249) When tall and dwarf plants are crossed, from which cross 1 : 1 ratio is obtained?

A) Tt and tt

B) tt and tt

C) $\text{Tt}\,\text{ }\!\!\times\!\!\text{ }\,\text{Tt}$

D) TT and Tt

• question_answer250) Botanical name of species which cause white rust of crucifers?

A) Peronospora parasitica

B) Puccinia gramnis

C) Pythium debarganum

D) Albugo Candida

• question_answer251) Root cap is absent in :

A) mesophyics

B) hydrophytes

C) epiphytes

D) xerophyies

• question_answer252) Which type of rhizoids are present in Riccia?

A) Unicellular smooth

B) Multicellular smooth

C) Unicellular smooth and tuberculated

D) Multicellular smooth and tuberculated

• question_answer253) In Mirabilis a hybrid for red (RR) and white (rr) flower produces pink (R-r) flower. A plant with pink flower is crossed with white flower the expected phenotypic ratio is :

A) red : pink : white (1 : 2 : 1)

B) pink : white (1 : 1)

C) red : pink (1 : 1)

D) red .-white (3 : 1)

• question_answer254) Which of the following is the site of lipid synthesis?

A) Rough ER

B) Smooth ER

C) Golgi bodies

D) Ribosome

• question_answer255) Cilliaced epithelium is present in;

A) trachea

B) ureter

C) intestine

D) nasal chamber

• question_answer256) Pulp cavity of teeth is lined by :

A) odontoblast

B) chondroblast

C) osteoblast

D) amyloblast

• question_answer257) Which of the following is not a source of vitamin-A?

A) Carrot

B) Mango

C) Apple

D) Yeast

• question_answer258) Complete metamorphosis is found in :

A) house-fly and mosquito

B) house-fly and cockroach

C) mosquito and cockroach

D) none of the above

• question_answer259) Down syndrome is due to :

A) chromosome number increase in 21st pair autosome

B) chromosome number decrease in 21st pair autosome

C) chromosome number increase in 18th pair autosome

D) chromosome number decrease in 18th air autosome

• question_answer260) Colour blindness is due to:

A) recessive female chromosome

B) dominant female chromosome

C) recessive male chromosome

D) dominant male chromosome

• question_answer261) Genetic recombination is due to:

A) fertilization and meiosis

B) mitosis and meiosis

C) fertilization and mitosis

D) none of the above

• question_answer262) Legume plants are important for atmosphere because they :

A) help in $N{{O}_{2}}$ fixation

B) do not help in $N{{O}_{3}}$ fixation

C) increase soil fertility

D) all of the above

A) a group of independent and interacting population of different species

B) a group of independent and interacting population of same species

C) a group of independent and interacting population of same species in a specific area

D) a group of independent and interacting population of different species in a specific area

• question_answer264) Quiescent centre is present in:

A) shoot apex

B) root apex

C) both (a) and (b)

D) meristemacic tissue

A) Dodo

B) Dimetrodon

C) Sphenodon

D) Archaeopleryx

• question_answer266) Vestigial organ in human being is :

A) incisor

B) canines

C) molar

D) premolar

• question_answer267) 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 $N{{H}_{3}}$

• question_answer268) Nerve impulse initiates with the movements of:

A) ${{K}^{+}}$

B) $N{{a}^{+}}$

C) $C{{a}^{+}}$

D) $M{{g}^{+}}$

• question_answer269) In which of the following, Nissls granules are found?

A) Liver cells

B) Nerve cells

C) Intestinal cells

D) Uriniferous tubules

• question_answer270) Sympathetic nervous system induces :

A) heart beat

B) secretion of semen

C) secretion of saliva

D) secretion of digestive juices

• question_answer271) Organ of corti is found in:

A) heart

B) kidneys

C) inner ear

D) nasal chamber

• question_answer272) During food chain, maximum energy is stored in :

A) producer

B) primary consumer

C) secondary consumer

D) decomposer

• question_answer273) Cold treatment of seeds is called :

A) verbalization

B) stratification

C) devemalization

D) photophosphorylation

• question_answer274) One gene-one enzyme hypothesis was given by:

A) Mendel

B) Darwin

C) Robert Hooke

• question_answer275) The formation of fruits without fertilization is called :

A) polyspory

B) parthenogenesis

C) polyembryony

D) parthenocarpy

• question_answer276) Mycorrhiza helps in :

A) respiration

B) water absorption

C) nutrient absorption

D) phosphate absorption

• question_answer277) Last electron receptor in respiration is :

A) $C{{O}_{2}}$

B) ${{O}_{2}}$

C) ${{H}_{2}}$

• question_answer278) Which of the following algae is parasitic?

A) Nostoc

B) Rhodomenia

C) Cephaleuros

D) Polysiphoma

• question_answer279) Alcoholic fermentation takes place in the presence of:

A) maltase

B) zymase

C) amylase

D) invertase

• question_answer280) Fluid mosaic model of cell membrane was given by:

B) Singer and Nicolson

C) Watson and Crick

D) Robenson and Miller

• question_answer281) Suicidal bags are :

A) lysosomes

B) Golgi bodies

C) ribosomes

D) chloroplast

• question_answer282) Heterochromatin remains condensed in which part of chromosome?

A) Secondary construction-I

B) Secondary construction-II

C) Telomeres

D) Both (a) and (b)

• question_answer283) Tracheids differs from vessels in having :

A) thick wall

B) bordered pits

C) discontinuous intercalary wall

D) spiral thickening

• question_answer284) Chlorosis in leaf occurs due to the deficiency of:

A) chloride

B) magnesium

C) phosphate

D) molybdenum

• question_answer285) The anti transpirant is :

A) PMA

B) ABA

C) both (a) and (b)

D) none of these

• question_answer286) Pneumatophores are found in :

A) Orchid

B) Piper

C) Rhizophora

D) Ficus

• question_answer287) Plant which used by Hugo de Vries for mutation experiment was :

A) Oenothera lamarkiana

B) Solarium tuberosom

C) Ficus elastic

D) None of the above

• question_answer288) Agar-agar is obtained from :

A) Chlorealla

B) Chlamydomonas

C) Nostoc

D) Gracilaria and Gelidium

• question_answer289) Hypanthodium in florescence is found in :

A) Ficus

B) Tulsi

C) Cedrus

D) Calotropis

• question_answer290) Green-house gases are :

A) $CFCS,\,C{{O}_{2}},\,N{{H}_{4}}$, and $N{{O}_{2}}$

B) ${{O}_{2}},\,{{N}_{3}},\,N{{O}_{2}}$

C) ${{N}_{2}},\,C{{O}_{2}},\,N{{H}_{4}}$

D) None of the above

• question_answer291) Respiration pigment of blood in cockroach is :

A) haemozoine

B) haemocyanin

C) haemoglobin

D) absent

• question_answer292) From acrosome which secrets :

A) hyaluronic acid

B) hyaluronidase

C) TSH

D) fertilizing

• question_answer293) Malignant malaria is cause by :

B) Plasmodium ovale

C) Plasmodium vivax

D) Plasmodium malariae

• question_answer294) Retrogressive metamorphosis is present in

A) Herdmania

B) Balanoglossus

C) Amphioxus

D) All of these

• question_answer295) Corpus leuteum secrets :

A) LH

B) progesterone

C) estrogen

D) FSH

• question_answer296) Origin of nervous system from :

A) meso-endoderm

B) mesoderm

C) endoderm

D) ectoderm

• question_answer297) Which parasite is present in seminal vesicle of earthworm?

A) Monocystu

B) Nosema

C) Sarcocystis

D) Nictotherus

• question_answer298) Ribonucleoprotein panicles of protoplasm are:

A) ribosomes

B) plastid

C) Golgi body

D) cristae

• question_answer299) Main function of ribosomes is :

A) fat synthesis

B) sterol synthesis

C) protein synthesis

D) None of these

• question_answer300) 100. Which of the following is shift in chloride- shift?

A) ${{O}_{2}}$ and $C{{O}_{2}}$

B) Bicarbonate ions

C) $C{{O}_{2}}$

D) ${{O}_{2}}$