# 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

• 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) $4{{s}_{1}}$

• 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) $60{}^\circ$

• 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) $2:1$

• 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

• 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) ${{\tan }^{-1}}(2\pi /2)$

• 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

• 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

• 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) $\frac{7}{2}$

• question_answer10) A liquid has only

A) shear modulus

B) Youngs modulus

C) bulk modulus

D) All of the above

• 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) $ML{{\,}^{5}}{{T}^{-1}}$

• 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) ${{\omega }^{2}}({{a}^{2}}-{{y}^{2}})$

• 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) ${{r}^{2}}$

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

A) isothermal

C) isochoric

D) isobaric

• 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) $\frac{1}{64}$

• 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) $1.5\times {{10}^{8}}m/s$

• 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) $60{}^\circ$

• 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) $2\sqrt{2}\,s$

• 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) $\frac{{{f}_{e}}}{{{f}_{0}}}$

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

A) ${{T}^{2}}$

B) ${{T}^{-2}}$

C) ${{T}^{4}}$

D) $T$

• question_answer21) Huygens wave theory of light could not explain

A) diffraction

B) interference

C) polarization

D) photoelectric effect

• 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

• 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

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

A) zero

B) infinity

C) indeterminate

D) variable

• 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) $0.123\,\overset{\text{o}}{\mathop{\text{A}}}\,$

• 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

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

A) $h$

B) $h/2$

C) $h/2\pi$

D) $h/\pi$

• 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

• 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)

• 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

• 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

• 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

• 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.

• 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.

• 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).

• 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

• 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 $({{H}_{2}}O)$

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

A) Newton

B) Kepler

C) Einstein

D) Millikan

• 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

• 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

• question_answer41) The penetrating power is minimum for

A) $\text{-}$rays

B) $\text{-}$rays

C) $\text{Y-}$rays

D) $\text{X-}$rays

• 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

• 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) $20\,cm$

• 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) $\frac{{{\mu }_{0}}i}{2\pi r}$

• 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) $16R$

• 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.

• 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) $\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{q}{{{R}^{2}}}0$

• 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

• 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

• 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

• 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) $[M{{L}^{2}}{{T}^{-5}}]$

• 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) $45{}^\circ$

• 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) $0.25$

• 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) $144{{\pi }^{2}}\,m/{{s}^{2}}$

• 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

• 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) $\frac{1}{\sqrt{3}}$

• 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) $1.25\,{{m}_{0}}$

• 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) $-0.33\,mg{{R}_{e}}$

• 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) $1215\overset{\text{o}}{\mathop{\text{A}}}\,$

• 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

• 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) $311\overset{\text{o}}{\mathop{\text{A}}}\,$

• 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

• 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) $\frac{{{d}_{2}}^{2}}{{{d}_{1}}^{2}}$

• 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

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

A) red

B) green

C) yellow

D) white

• 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) $2184{}^\circ C$

• question_answer67) Thermocouple, thermometer is based on

A) Seebeck effect

B) Pettier effect

C) Thomson effect

D) Joule effect

• 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

• 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) $\frac{em}{g}$

• 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

• 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

• 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) ${{10}^{-17}}\,\mu {{ }_{0}}$

• 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

• 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) $18666\,\overset{o}{\mathop{\text{A}}}\,$

• 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

• 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

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

A) nuclear fission

B) nuclear fusion

C) electric generator

D) burning of coal

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

A) $40{}^\circ$

B) $37{}^\circ$

C) $-40{}^\circ$

D) $80{}^\circ$

• 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) $E\propto \frac{1}{{{r}^{4}}}$

• 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

• 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) $4\Upsilon$

• 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) $\frac{\lambda }{{{\log }_{e}}2}\text{and}\,\text{2}\lambda$

• 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

• 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

• 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) $\frac{{{r}^{2}}}{\eta }$

• 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

• 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) $2\mu$

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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) ${{\varepsilon }_{0}}Q$

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

• 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) $\frac{3}{40}\text{A}$

• 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) $\frac{D}{d}({{\mu }^{2}}-1)t$

• 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) $\frac{{{\mu }_{0}}i}{n}$

• 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) $r\propto d$

• 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

• 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) $BeC{{l}_{2}}$

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

A) Calamine

B) Malachite

C) Galena

D) Dolomite

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

A) Francium

B) Silicon

C) Caesium

D) Lithium

• 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) $\underset{C{{H}_{2}}OH}{\overset{C{{H}_{2}}OH}{\mathop{|}}}\,$

• 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) $C{{H}_{3}}N{{H}_{2}}$

• 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

• question_answer109) How many structural isomers can be obtained from ${{C}_{2}}HB{{r}_{2}}$

A) $4$

B) $3$

C) $2$

D) $1$

• 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

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

A) $Cu$

B) $Ag$

C) $Zn$

D) $Fe$

• question_answer112) The process carried out in perfect insulation is

A) isothermal

B) isobaric

C) isochoric

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

A) oxygen

B) hydrogen

C) sulphur dioxide

D) hydrogen sulphide

• 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

• 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) $1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{6}}\,3{{s}^{2}}\,3{{p}^{6}}\,3{{d}^{5}}$

• question_answer116) IUPAC name of tert-butyl alcohol is

A) Butanol-2

B) 2-Methyl propanol-2

C) Butanol-1

D) Propanol-2

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

A) 1-Butanol

B) 2-Butene

C) 1-Butene

D) 2-Butanol

• 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

• 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

• 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

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

A) $C{{H}_{3}}COON{{H}_{4}}$

B) $NaOH$

C) $Pb{{(OH)}_{2}}$

D) $N{{H}_{4}}Cl+N{{H}_{4}}OH$

• 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) $HI<HBr<HCl<HF$

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

A) $K$

B) $Be$

C) $Na$

D) $Mg$

• 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

• 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

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

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

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

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

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

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

A) Butanol-2

B) Butanol-1

C) 2-methyl ketone

D) 2-methyl propane

• question_answer128) Isobars have

A) same number of nucleons

B) same number of neutrons

C) same number of protons

D) None of these

• 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

• question_answer130) The unit of the molality is

A) mole per litre

B) mole per kilogram

C) per mole per litre

D) mole litre

• 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) $C{{H}_{3}}CHO$

• 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

• 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

• 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

• 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) $HCHO$

• question_answer136) Vinegar is

A) $HCOOH$

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

C) $HCHO$

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

• 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

• 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

• question_answer139) ${{C}_{4}}{{H}_{11}}N$ shows how many primary amines?

A) $1$

B) $2$

C) $3$

D) $4$

• 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

• question_answer141) Grignard reagent reacts with $HCHO$to produce

A) sec. alcohol

B) anhydride

C) an acid

D) primary alcohol

• question_answer142) Which one of the following is slag?

A) $CaSi{{O}_{3}}$

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

C) $CaO$

D) $Ca{{(OH)}_{2}}$

• question_answer143) When 2-bromobutane reacts with alcoholic $KOH,$the reaction is

A) hydrogenation

B) halogenation

C) dehydro halogenation

D) none of these

A) $\Delta q=0$

B) $\Delta E=0$

C) $\Delta W=0$

D) $\Delta V=0$

• 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

• question_answer146) Glucose reacts with bromine water to produce

A) Glyceraldehyde

B) Gluconic acid

C) saccharic acid

D) Glucaric acid

• 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) $9.75J$

• question_answer148) Which does not form linear structure?

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

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

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

D) $BeC{{l}_{2}}$

• question_answer149) Zeeman effect explains splitting of lines in

A) magnetic field

B) electric field

C) both of these

D) none of these

• 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.

• question_answer151) In Clemmensens reduction, acetone gives

A) propane

B) propene

C) propanol

D) propyne

• 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) $CHC{{l}_{2}}.HN{{O}_{3}}$

• 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) $Al+dry\text{ }HCl\text{ }gas$

• 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) ${{C}_{2}}{{H}_{5}}O{{C}_{2}}{{H}_{5}}$

• question_answer155) Marsh gas is

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

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

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

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

• 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) $6\text{ }atm.$

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

A) $S$

B) $Se$

C) $O$

D) $Na$

• 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) $5$

• question_answer159) Tyndall effect is shown by

A) solution

B) precipitate

C) sol

D) none of these

• 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) $CaS{{O}_{4}}.2{{H}_{2}}O$

• 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) $\Delta H=\Delta E+RT$

• question_answer162) The best water soluble hydroxide is

A) $Ca{{(OH)}_{2}}$

B) $Ba{{(OH)}_{2}}$

C) $Sr{{(OH)}_{2}}$

D) $Mg{{(OH)}_{2}}$

• question_answer163) On dry heating, calcium formate gives

A) acetaldehyde

B) formaldehyde

C) acetone

D) acetic acid

• 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) $0.6N$

• 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) $CaO+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}CaS{{O}_{4}}+{{H}_{2}}O$

• 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) $8.527\times {{10}^{23}}$

• 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) $C{{H}_{3}}C{{H}_{2}}OH$

• 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) $109.3$

• 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) ${{C}_{2}}{{H}_{6}}$

• 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) $C{{H}_{3}}COC{{H}_{3}}$

• 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)

• 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) $C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH$

• question_answer173) Which one of the following does not react with $CuS{{O}_{4}}$solution?

A) $Ag$

B) $Fe$

C) $Mg$

D) $Zn$

• question_answer174) Glycerol at $530K$reacts with oxalic acid to produce

A) glyceraldehyde

B) allyl alcohol

C) formic acid

D) acetic acid

• 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) $HP{{O}_{3}}$

• question_answer176) Bleaching powder is obtained by treating chlorine with

A) $CaC{{O}_{3}}$

B) $Ca{{(OH)}_{2}}$

C) $CaO$

D) none of these

• question_answer177) $Mg$ burns in air to produce

A) $MgC{{O}_{3}}$

B) $MgO$

C) $Mg3{{H}_{2}}$

D) $MgO+M{{g}_{3}}{{N}_{2}}$

• question_answer178) Deficiency of vitamin E causes

A) scurvy

B) beri-beri

C) antifertility

D) rickets

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

A) $5$

B) $17$

C) $19$

D) $23$

• 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) $10000$

• 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

• 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) $HN{{O}_{2}}$

• 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) $654.5\text{ }sec$

• question_answer184) Azimuthal quantum number $(l)=2,$ then the value of principal quantum number (n)is

A) $1$

B) $2$

C) $3$

D) $4$

• 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

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

• 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) $C{{H}_{3}}COOH$

• question_answer188) lonization potential is maximum for

A) $Al$

B) $In$

C) $Ga$

D) $B$

• 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 $1\pi$

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

A) 1-Butene

B) Ethylene

C) Ethane

D) 2-Butene

• 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) $1.34\times {{10}^{-3}}M$

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

A) $10,12$

B) $11,20$

C) $21,33$

D) $13,31$

• 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) ${{B}_{6}}{{H}_{6}}$

• 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) ${{H}_{2}}O<{{H}_{2}}{{O}_{2}}>C{{O}_{2}}$

A) $PbO$

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

C) $P{{b}_{3}}{{O}_{4}}$

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

• 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) ${{C}_{6}}{{H}_{6}}$

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

A) pent-2-ene

B) but-2-ene

C) 1-butene

D) propene

• 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) $s{{p}^{3}}s{{p}^{2}}sp\text{ }s{{p}^{2}}$

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

A) non-inflammable

B) lighter than hydrogen

C) frequently available

• 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

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

A) valve

B) tricuspid valve

C) semilunar valve

D) None of these

• question_answer202) Ornithine cycle is found in

A) liver

B) kidney

C) heart

D) muscles

• question_answer203) Goitre is a pathological condition associated with:

A) glucagon

B) thyroxine

C) progesterone

D) testosterone

• question_answer204) Connecting link between reptiles and birds is:

A) Dodo

B) Dimetrodon

C) Sphenodon

D) Archaeopteryx

• 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

• question_answer206) The site of fertilization in mammals is

A) ovary

B) abdominal

C) uterus

D) fallopian tube

• question_answer207) Natural parthenogenesis is found in?

A) housefly

B) honey bee

C) Drosopiula

D) all of these

• question_answer208) Sex hormones can work without the help of

A) insulin

B) placenta

C) pituitary

• question_answer209) Mammals excrete

A) urea

B) uric acid

C) ammonia

D) all of these

• 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) $\text{S,M,}{{\text{G}}_{1,}}{{G}_{2}}$

• question_answer211) Vestigeal organ in human being is

A) incisor

B) canines

C) molar

D) premolar

• question_answer212) Aerobic respiration is related with

A) mitochondria

B) plasma membrane

C) golgi bodies

D) endoplasmic reticulum

• question_answer213) The connection between two cells is

B) microfilaments

C) sieve tube

D) none of these

• question_answer214) Natural pearl is

A) a mollusc

B) an annelid

C) an arthropod

D) an echinodermate

• 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

• 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 $N{{H}_{3}}$

• question_answer217) Spermatogenesis is induced by

A) FSH

B) ACTH

C) ICSH

D) ATH

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

A) chloroquin

B) Cinchona

C) Colchicum

D) oil of Chenopodium

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

A) glycine

B) GABA

D) acetylcholine

• question_answer220) During hibernation, frogs respiration is

A) cutaneous

B) pulmonary

C) buccopharyngeal

D) pharyngeal

• 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

• 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

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

A) 40

B) 38

C) 34

D) 30

• question_answer224) Which of the following pairs is correct?

A) annelida-polychaeta-leech

B) arthropoda-crustacea-cockroach

C) mollusca-cephalopoda-Octopus

D) protozoa-Hydra

• question_answer225) Nerve impulse initiates with the movements of

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

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

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

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

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

A) actin

B) myosin

C) collagen

D) tubutin

• 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

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

A) liver

B) spleen

C) kidney

D) red bone marrow

• question_answer229) Pseudocoel is a cavity found in

A) Hydra

B) Ascaris

C) housefly

D) sponge

• question_answer230) Sarcolemma is a membrane found over

A) heart

B) cardiac muscle

C) muscle fibre

D) nerve fibre

A) is antiserum

B) helps in clotting

C) helps in secretion

D) is anticoagulant

• question_answer232) Trichocyst and nematocysts are meant for

A) defense

B) nutrition

C) respiration

D) excretion

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

A) blastocoels

B) coelom

C) spongocoel

D) gastrovascular cavity

• question_answer234) In mammals the digestion of starch starts from

A) mouth

B) stomach

C) oesophagus

D) duodenum

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

A) liver cells

B) nerve cells

C) intestinal cells

D) uriniferous tubules

• question_answer236) In sponges, food is stored in

A) porocytes

B) choanocytes

C) amoebocytes

D) thesocytes

• question_answer237) Largest egg is of

A) PPLO

B) Ostrich

C) Hydra

D) Periplanata Americana

• 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

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

A) spicules

B) tentacles

C) spongin fibres

D) none of these

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

A) caecum

B) colon

C) small intestine

D) large intestine

• question_answer241) DNA is found in

A) nucleus only

B) cytoplasm only

C) nucleus and cytoplasm

D) none of these

• question_answer242) Cellular respiration occurs in

A) nucleus

B) ribosomes

C) golgi body

D) mitochondria

• question_answer243) Joint between humerus and ulna is

B) hinge joint

C) fibrous joint

D) ball and socket

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

A) Grassi

B) Laveron

C) Lancisi

D) Ronald Ross

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

A) actin

B) myosin

C) ATP

D) actomyosin

• question_answer246) Tube feet are locomotary organs found in

A) annelids

B) Mollusca

C) arthropods

D) echinoderms

• 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

• question_answer248) Incubation period of Plasmodium vivax is

A) 4 days

B) 6 days

C) 14 days

D) 30 days

• question_answer249) Sympathetic nervous system induces

A) heartbeat

B) secretion of semen

C) secretion of saliva

D) secretion of digestive juices

• question_answer250) Organ of Corti is found in

A) heart

B) kidneys

C) inner ear

D) nasal chamber

• question_answer251) Apical dominance is caused by

A) $\text{I}$AA

B) $\text{I}$BA

C) 2, 4-D

D) 2, 4, 5-T

• question_answer252) Spore of Funnria, on germination, produces

A) protonema

B) antheridia

C) archegonia

D) vegetative body

• 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

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

A) producer

B) primary consumer

C) secondary consumer

D) decomposer

• question_answer255) Cold treatment of seeds is called

A) vernalization

B) stratification

C) devernalization

D) photophosphorylation

• question_answer256) Bordered pits are generally found in

A) dicots

B) monocots

C) gymnosperms

D) bryophytes

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

A) Mendel

B) Darwin

C) Robert Hook

D) Beadle and Tatum

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

A) murein

B) cellulose

C) lipid and protein

D) cellulose and lipid

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

A) Pear

B) Citrus

C) Mango

D) Bambusa

• question_answer260) Megasporophyll of Cycas is equivalent to

A) stamen

B) sepal

C) petal

D) carpel

• question_answer261) The term leptome is used for

A) xylem

B) phloem

C) endodermis

D) pericycle

• question_answer262) The formation of fruits without fertilization is called

A) polyspory

B) parthenogenesis

C) polyembryony

D) parthenocarpy

• question_answer263) An alga which is rich in proteins is

A) Ulothrix

B) Spirogyra

C) Nostoc

D) Chlorella

• question_answer264) Vivipary is seen in

A) mangroves

B) xerophytes

C) hydrophytes

D) mesophytes

• question_answer265) Which one of the following is a gymnosperm

A) Mango

B) Walnut

C) Funaria

D) Chilgoza

• question_answer266) Mycorrhiza helps in

A) respiration

B) water absorption

C) nutrient absorption

D) phosphate absorption

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

A) bracteate

B) involucre

C) petaloid

D) polysepalous

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

A) 6

B) 10

C) 16

D) 32

• question_answer269) The lateral roots originate from

A) exodermis

B) endodermis

C) pericycle

D) vascular bundles

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

A) promotory

B) ineffective

C) essential

D) all of these

• question_answer271) Separation of linked genes is called

B) segregation

C) crossing over

D) genetic mutation

• question_answer272) Anti-viral substance is

A) bacteria

B) antibody

C) antigen

D) interferon

• question_answer273) The enzyme which is used for replication is

A) DNA ase

B) aldol ase

C) RNA polymerase

D) DNA polymerase

• question_answer274) ${{C}_{4}}$-cycle is found in

A) fir

B) mango

C) sugarcane

D) none of these

• question_answer275) RuBP is found in

A) ETS

B) Calvin cycle

C) ${{C}_{4}}$ plants

D) Krebs cycle

• question_answer276) Incipient nucleus is found in

A) myxophyceae

B) phaeophyceae

C) rhodophyceae

D) chlorophyceae

• question_answer277) Last electron receptor in respiration is

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

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

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

• question_answer278) Diadelphous condition is found in

A) rosaceae

B) papilionaceae

C) leguminosae

D) cucurbitaceae

• question_answer279) Which of the following algae is parasitic?

A) Nostoc

B) Rhodomenia

C) Cephaleuros

D) Polysiphonia

• question_answer280) Glycolysis occurs in

A) grana

B) stroma

C) cytosol

D) mitochondria

• question_answer281) Nucleosides have

A) purine + pyrimidine

B) purine or pyrimidine + sugar

C) purine + sugar + phosphate

D) purine + pyrimidine + phosphate

A) Asparagus

B) Opuntia

C) Parkmsonia

D) Psidium guajava

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

A) fat

B) glucose

C) fructose

D) organic acid

• question_answer284) Blue-green algae has

A) chlorophyll b

B) xanthophyll

C) phycocyanin

D) fucoxanthin

• question_answer285) Connecting link between glycolysis and Krebs cycle is

A) PGA

B) ketone

C) aldehyde

D) acetyl-Co A

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

A) flax

B) cotton

C) hemp

D) silk

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

A) enzyme

B) vitamin

C) hormone

D) riboflavin

• question_answer288) Alcoholic fermentation takes place in the presence of

A) maltase

B) zymnse

C) amylase

D) invertase

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

A) TMV

B) bacteria

C) yeast

D) Rhizopus

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

A) virion

B) viroid

C) prion

D) mycoplasma

• question_answer291) Phytochrome is found in

A) algae

B) flowering plants

C) fungi

D) vascular cryptogams

• question_answer292) Replication of DNA takes place during

A) S-phase

B) prophase

C) metaphase

D) anaphase

• 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%

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

A) photolysis

B) photophosphorylation

C) carboxylation

D) oxidative phosphorylation

• 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

• question_answer296) Late blight of potato is caused by

A) Rhizopus

B) Ustilago

C) Altemnria solani

D) Phytopthorn infestens

• question_answer297) Cell membrane is composed of

A) protein

B) phospholipid

C) carbohydrate

D) lipid and potein

• question_answer298) Binomial nomenclature was given by

A) Darwin

B) Lamarck

C) Linnaeus

D) Theophrastus

• question_answer299) Genetic material of virus is

A) RNA

B) DNA

C) carbohydrate

D) either RNA or DNA

• question_answer300) Suicidal bags are

A) lysosomes

B) golgi bodies

C) ribosomes

D) chloroplast