Solved papers for BHU PMT BHU PMT (Screening) Solved Paper-2011

BHU PMT (Screening) Solved Paper-2011 Total Questions - 200

1) \[3.0\text{ }mW\]of 400 nm light is incident on a photoelectric cell, if 0.1% of the photons are contributing in ejection of electrons, then the current in the cell is

A)

\[0.48\text{ }\mu A\]

B)

resistance value not given

C)

zero

D)

\[0.96\text{ }\mu A\]

View Answer
2) What is the effect of increasing the intensity of light that falls on the emitter in a photoelectric effect apparatus?

A)

Cut-off frequency decreases

B)

Stopping potential decreases

C)

Time delay for emission of photoelectron decreases

D)

Saturation photocurrent increases

View Answer
3) The ratio of the acceleration due to gravity at the bottom of a deep mine and that on the surface of the earth is 978/980. Find the depth of the mine if the density of the earth is uniform through and the radius of the earth is 6300 km

A)

12.86km

B)

13.0km

C)

25.38km

D)

90.9km

View Answer
4) A body falls from rest. In the last second of its fall it covers half of the total distance. If g is \[9.8\text{ }m/{{s}^{2}},\]then the total time of its falls is (in second)

A)

2

B)

\[2+\sqrt{2}\]

C)

\[4-\sqrt{2}\]

D)

3

View Answer
5) A pressure of\[x\]dyne\[c{{m}^{-2}}\]is equivalent to

A)

\[\left( \frac{x}{10} \right)N{{m}^{-2}}\]

B)

\[\left( \frac{x}{100} \right)N{{m}^{-2}}\]

C)

\[10x\,N{{m}^{-2}}\]

D)

\[\left( \frac{x}{{{10}^{4}}} \right)\,N{{m}^{-2}}\]

View Answer
6) As shown in figure a uniform solid sphere rolls on a horizontal surface at 20 m/s. If then rolls up the incline shown. What will be the value of h, where the ball stops?

A)

28.6m

B)

8.6m

C)

6m

D)

18.6m

View Answer
7) A racing car moving towards a cliff sounds its horn. The driver observes that the sound reflected from the cliff has a pitch one octave higher than the actual sound of the horn. If v is the velocity of sound, the velocity of the car is

A)

\[\frac{v}{\sqrt{2}}\]

B)

\[\frac{v}{2}\]

C)

\[\frac{v}{3}\]

D)

\[\frac{v}{4}\]

View Answer
8) A ball falls vertically on to a floor, with momentum p and then bounces repeatedly, the coefficient of restitution is e. The total momentum imparted by the ball to the floor is

A)

\[p(1+e)\]

B)

\[\frac{p}{1-e}\]

C)

\[p\left( \frac{1+e}{1-e} \right)\]

D)

\[p\left( 1-\frac{1}{e} \right)\]

View Answer
9) A car accelerates from rest at a constant rate a for some time after which it decelerates at a constant rate p to come to rest. If the total time elapsed is t, the distance travelled by the car is

A)

\[\frac{1}{2}\left( \frac{\alpha \beta }{\alpha +\beta } \right){{t}^{2}}\]

B)

\[\frac{1}{2}\left( \frac{\alpha +\beta }{\alpha \beta } \right){{t}^{2}}\]

C)

\[\frac{1}{2}\left( \frac{{{\alpha }^{2}}+{{\beta }^{2}}}{\alpha \beta } \right){{t}^{2}}\]

D)

\[\frac{1}{2}\left( \frac{{{\alpha }^{2}}-{{\beta }^{2}}}{\alpha \beta } \right){{t}^{2}}\]

View Answer
10) A ball is thrown from a point with a speed\[{{v}_{0}}\]at an angle of projection\[\theta \]. From the same point and the same instant, a person starts running with constant speed\[\frac{{{v}_{0}}}{2}\]to catch the ball will the person be able to catch the ball? If yes, what should be the angle of projection?

A)

Yes, \[60{}^\circ \]

B)

Yes, \[30{}^\circ \]

C)

No

D)

Yes,\[45{}^\circ \]

View Answer
11) A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a place, it follows that

A)

its velocity is constant

B)

its acceleration is constant

C)

its kinetic energy is constant

D)

its moves in a straight line

View Answer
12) A wooden block of mass M resting on a rough horizontal surface is pulled with a force F at an angle with the horizontal. If\[\mu \]is the coefficient of kinetic friction between the block and the surface, then acceleration of the block is

A)

\[\frac{F}{M}(\cos \phi +\mu \sin \phi )-\mu g\]

B)

\[F\sin \frac{\phi }{M}\]

C)

\[\mu F\cos \phi \]

D)

\[\mu Fsin\,\phi \]

View Answer
13) The particle is released from a height h. At a certain height, its KE is two times that of potential energy. Height and speed of the particle at that instant are

A)

\[\frac{h}{3},\sqrt{\frac{2gh}{3}}\]

B)

\[\frac{h}{3},2\sqrt{\frac{gh}{3}}\]

C)

\[\frac{2h}{3},\sqrt{\frac{2gh}{3}}\]

D)

\[\frac{h}{3},\sqrt{2gh}\]

View Answer
14) The time period of a satellite of earth is 5 h. If the separation between the earth and the satellite is increased to 4 times the previous value, the new time period will become

A)

10 h

B)

80 h

C)

40 h

D)

20 h

View Answer
15) A disk starts rotating from rest about its axis with an angular acceleration equal to\[a=10\] \[rad/{{s}^{2}}\]where t is time in second. At\[t=0\]disk is at rest. The time taken by disk to make its first complete revolution is

A)

\[{{\left( \frac{6\pi }{5} \right)}^{1/3}}\]

B)

\[{{\left( \frac{3\pi }{10} \right)}^{1/3}}\]

C)

\[{{\left( \frac{2\pi }{5} \right)}^{1/2}}\]

D)

\[{{\left( \frac{6\pi }{13} \right)}^{1/3}}\]

View Answer
16) A steel ball is dropped in oil, then

A)

the ball attains constant velocity after same time

B)

the ball stops

C)

the speed of ball will keep on increasing

D)

None of the above

View Answer
17) The pressure inside a tyre is 4 arm at\[27{}^\circ C\]. If the tyre burst suddenly, new temperature will be

A)

300 (4)772

B)

300 (4)277

C)

300 (2)772

D)

300 (4)-277

View Answer
18) Compute the number of moles and in 1.00 \[c{{m}^{2}}\]of an ideal gas at a pressure of 100 Pa and a temperature of 220 K

A)

\[3.35\times {{10}^{-8}}mol\]

B)

\[4.57\times {{10}^{-7}}mol\]

C)

\[5.47\times {{10}^{-8}}mol\]

D)

\[2.75\times {{10}^{-8}}mol\]

View Answer
19) A parallel plate condenser with a dielectric of dielectric constant K between the plates has a capacity C and is charged to a potential V volt. The dielectric slab is slowly removed from between the plates and then reinserted. The net work done by the system in this process is

A)

\[\frac{1}{2}(K-1)C{{V}^{2}}\]

B)

\[C{{V}^{2}}=\frac{(K-1)}{K}\]

C)

\[(K-1)C{{V}^{2}}\]

D)

zero

View Answer
20) A potential of 500 V is observed near the surface C with \[V=0\] at infinity. If two such drops of the same charge and radius combine to form a single spherical drop, the potential at the surface at the new drop?

A)

590V

B)

690V

C)

790V

D)

890V

View Answer
21) A ball rolls off the stairway with a horizontal velocity of magnitude 1.8 m/s. The steps are 0.20 m high and 0.20 m wide. Which step will the ball hit first?

A)

First

B)

Second

C)

Third

D)

Fourth

View Answer
22) A point P lies on the axis of a ring of mass M and radius R at a distance 2R from its centre O. A small particle starts from P and reaches Q under gravitational attraction only. Its speed of at O will be

A)

Zero

B)

\[\sqrt{\frac{2GM}{R}}\]

C)

\[\sqrt{\frac{2GM}{R}(\sqrt{5}-1)}\]

D)

\[\sqrt{\frac{2GM}{R}\left( 1-\frac{1}{\sqrt{5}} \right)}\]

View Answer
23) If gas molecules undergo in elastic collision with the walls of the container, then

A)

temperature of the gas will increase

B)

temperature of the gas will fall

C)

pressure of the gas will increase

D)

neither the temperature nor the pressure will change

View Answer
24) Magnetic field at the centre of a circular loop of area A is B. The magnetic moment of the loop will be

A)

\[\frac{B{{A}^{2}}}{{{\mu }_{0}}\pi }\]

B)

\[\frac{B{{A}^{3/2}}}{{{\mu }_{0}}\pi }\]

C)

\[\frac{B{{A}^{3/2}}}{{{\mu }_{0}}{{\pi }^{1/2}}}\]

D)

\[\frac{2B{{A}^{3/2}}}{{{\mu }_{0}}{{\pi }^{1/2}}}\]

View Answer
25) A particle is moving in a circle of radius r with constant speed v. The change in velocity of particle while moving from A to B\[(<AOB=50{}^\circ )\]is

A)

\[2v\text{ }cos\text{ }50{}^\circ \]

B)

\[2v\text{ }sin\text{ }50{}^\circ \]

C)

\[2v\text{ }cos25{}^\circ \]

D)

\[2v\,\sin \,25{}^\circ \]

View Answer
26) A 24 kg block resting on a floor has a rope secured to its top. The maximum tension the rope can withstand without breaking is 310 N. The minimum time in which the block can be lifted a vertical distance of 4.6 m by pulling on the rope is

A)

1.2s

B)

1.3s

C)

1.7 s

D)

2.3 s

View Answer
27) The upper end of a wire 1 m long and 2 mm radius is clamped. The lower end is twisted through an angle of\[45{}^\circ \]. The angle of shear is

A)

\[0.09{}^\circ \]

B)

\[0.9{}^\circ \]

C)

\[9{}^\circ \]

D)

\[90{}^\circ \]

View Answer
28) Two plano-convex lenses of radius of curvature R and refractive index\[\mu =1.5\]will have equivalent focal length equal to R when they are placed

A)

at distance \[\frac{R}{4}\]

B)

at distance \[\frac{R}{2}\]

C)

at distance R

D)

in contact with each other

View Answer
29) A point moves in a straight line so that its displacement \[x\](metre) in time t (second) is given by\[{{x}^{2}}={{t}^{2}}+1\]. Its acceleration in m/s , is

A)

\[\frac{1}{x}-\frac{1}{{{x}^{2}}}\]

B)

\[-\frac{t}{{{x}^{2}}}\]

C)

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

D)

\[\frac{1}{{{x}^{3}}}\]

View Answer
30) The threshold wavelength for a photo-sensitive surface is \[6000\,\overset{\text{o}}{\mathop{\text{A}}}\,\] and the wavelength of incident light is \[5000\,\overset{\text{o}}{\mathop{\text{A}}}\,\]. Then the maximum energy of emitted electrons would be

A)

0.041 eV

B)

0.41 eV

C)

4.1 eV

D)

41 eV

View Answer
31) Two resistances are connected in two gaps of a metre bridge. The balance point is 20 cm from the zero end. A resistance of\[15\,\Omega \]is connected in series with the smaller of the two. The null point shift to 40 cm. The value of the smaller resistance in Ohm is

A)

3

B)

6

C)

9

D)

12

View Answer
32) A capacitor of\[1\mu F\]initially charged to 10 V is connected across an ideal inductor of 0.1 mH. The maximum current in the circuit is

A)

0.5 A

B)

1 A

C)

1.5 A

D)

2 A

View Answer
33) An electron in hydrogen atom first jumps from second excited state to first excited state and then from first excited state to ground state. Let the ratio of wavelength, momentum and energy of photons emitted in these two cases be a, b and c respectively. Then

A)

\[a=\frac{9}{4}\]

B)

\[b=\frac{27}{5}\]

C)

\[c=\frac{5}{27}\]

D)

\[c=\frac{1}{a}=\frac{5}{27}\]

View Answer
34) If an electron has orbital angular momentum quantum number\[l=7,\]then it will have an orbital angular momentum equal to

A)

\[7\left( \frac{h}{2\pi } \right)\]

B)

\[42\left( \frac{h}{2\pi } \right)\]

C)

\[\sqrt{7}\left( \frac{h}{2\pi } \right)\]

D)

\[\sqrt{56}\left( \frac{h}{2\pi } \right)\]

View Answer
35) \[_{92}{{U}^{238}}\]on absorbing a neutron goes over to\[_{92}{{U}^{239}}\]. This nucleus emits an electron to go over to neptunium which on further emitting an electron goes over to plutonium. The resulting plutonium can be expressed as

A)

\[_{94}P{{u}^{239}}\]

B)

\[_{90}P{{u}^{219}}\]

C)

\[_{93}P{{U}^{240}}\]

D)

\[_{92}P{{U}^{240}}\]

View Answer
36) The expansion of unit mass of a particle gas at constant pressure is shown in the diagram given below here

A)

\[a=\]volume,\[b={}^\circ C\]temperature

B)

\[a=\]volume,\[K=\]temperature

C)

\[a={}^\circ C\]temperature,\[b=\]volume

D)

\[a=K\]temperature,\[b=\]volume

View Answer
37) Suppose the kinetic energy of a body oscillating with amplitude A and at a distance \[x\]is given by \[K=\frac{3x}{{{x}^{2}}+{{A}^{2}}}\] The dimensions of B are the same as that of

A)

work/time

B)

\[work\times distance\]

C)

work/distance

D)

\[work\times time\]

View Answer
38) A block at rest explodes into 3 parts of the same mass. The momentum of the two parts are - 2pi and pj. The momentum of the third part will have a magnitude

A)

p

B)

\[p\sqrt{3}\]

C)

\[p\sqrt{5}\]

D)

zero

View Answer
39) ball falls from rest from a height h on to a floor and rebounds to a height\[\frac{h}{4}\]. The coefficient of restitution between the ball and the floor is

A)

\[\frac{1}{2}\]

B)

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

C)

\[\frac{1}{\sqrt{2}}\]

D)

\[\frac{3}{4}\]

View Answer
40) Capacitance of a capacitor becomes\[\frac{4}{3}\]times its original value if a dielectric slab of thickness\[t=\frac{d}{2}\]is   inserted   between   the   plates (d = separation between the plates). The dielectric constant of the slab is

A)

6

B)

8

C)

4

D)

2

View Answer
41) For a certain organ pipe, three successive resonance frequencies are observed at 425, 595 and 765 Hz respectively. Taking the speed of sound in air to be 340 m/s, determine the fundamental frequency of the pipe

A)

42.5 Hz

B)

85 Hz

C)

170 Hz

D)

425 Hz

View Answer
42) Energy released in the fission of a single\[_{92}{{U}^{235}}\]nucleus is 200 MeV. The fission rate of\[_{92}{{U}^{235}}\]fuelled reactor operating at power level of 5 MW is

A)

\[1.56\times {{10}^{14}}/s\]

B)

\[1.56\times {{10}^{17}}/s\]

C)

\[1.56\times {{10}^{20}}/s\]

D)

\[1.56\times {{10}^{-17}}/s\]

View Answer
43) A stone is dropped into a well. If the depth of water below the top be h and the velocity of sound is v, then the splash in water is heard after T second. Then

A)

\[T=\sqrt{\frac{2h}{g}}+\frac{h}{v}\]

B)

\[T=2\sqrt{\frac{2h}{g}}\]

C)

\[T=\frac{2h}{v}\]

D)

\[T=\sqrt{\frac{2h}{g}}\times \frac{h}{v}\]

View Answer
44) A square of side 3 cm is located at a distance 25 cm from a concave of square is at the axis of the mirror and the plane is normal to axis of mirror. The area enclosed by the image of the square is

A)

\[4c{{m}^{2}}\]

B)

\[6c{{m}^{2}}\]

C)

\[16c{{m}^{2}}\]

D)

\[36c{{m}^{2}}\]

View Answer
45) A block of metal weighing 2 kg is resting on a frictionless plane. It is struck by a jet releasing water at a rate of 1 kg/s and at a speed of 5 m/s. The initial acceleration of the block will be

A)

\[2.5\text{ }m/{{s}^{2}}\]

B)

\[5.0\text{ }m/{{s}^{2}}\]

C)

\[10\text{ }m/{{s}^{2}}\]

D)

\[25\text{ }m/{{s}^{2}}\]

View Answer
46) The radius of earth is 6400 km and\[g=10\] \[m/{{s}^{2}}\]. In order that a body of 5 kg weighs zero at the equator, the angular speed of earth will be

A)

\[\frac{1}{80}rad/s\]

B)

\[\frac{1}{400}rad/s\]

C)

\[\frac{1}{800}rad/s\]

D)

\[\frac{1}{1600}rad/s\]

View Answer
47) The ratio of the mean KE of chlorine and oxygen molecules at the same temperature is

A)

16 : 35.5

B)

35.5 : 16

C)

\[{{(35.5)}^{2}}:{{(16)}^{2}}\]

D)

1 : 1

View Answer
48) Zener diodes are used for

A)

rectification

B)

amplification

C)

stabilization of voltage

D)

production of carrier waves

View Answer
49) In Ingen hausz experiment the wax melts upto 2 cm and 5 cm on the iron and the silver rods respectively. If K for silver is taken as 1, then its value for iron is

A)

0.4

B)

0.16

C)

2.5

D)

6.25

View Answer
50) Solar spectrum at time of total solar eclipse is

A)

line emission spectrum

B)

line absorption spectrum

C)

continuous emission spectrum

D)

band absorption spectrum

View Answer
51) The alkane which has only primary hydrogen atom is

A)

pentane

B)

iso-pentane

C)

neo-pentane

D)

2,2-dimethyl butane

View Answer
52) The IUPAC name of is

A)

2-amino pent-3-enoic acid

B)

4-amino pent-2-enoic acid

C)

3-ene-2-amino pentanoic acid

D)

2-ene-4-amino pentanoic acid

View Answer
53) The electrophile in the nitration of benzene is

A)

\[NO_{2}^{+}\]

B)

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

C)

\[N{{O}^{+}}\]

D)

\[NO_{2}^{-}\]

View Answer
54) Glycerol can be separated from spent-lye in soap industry by

A)

steam distillation

B)

fractional distillation

C)

distillation under reduced pressure

D)

ordinary distillation

View Answer
55) \[Ca{{C}_{2}}+{{H}_{2}}O\xrightarrow{{}}A\xrightarrow[{}]{{{H}_{2}}S{{O}_{4}}/HgS{{O}_{4}}}B\]Identify A and B in the given reaction

A)

\[{{C}_{2}}{{H}_{2}}\]and\[C{{H}_{3}}CHO\]

B)

\[C{{H}_{4}}\]and\[HCOOH\]

C)

\[{{C}_{2}}{{H}_{4}}\]and\[C{{H}_{3}}COOH\]

D)

\[{{C}_{2}}{{H}_{2}}\] and\[C{{H}_{3}}COOH\]

View Answer
56) Benzene vapour mixed with air when passed over\[{{V}_{2}}{{O}_{5}}\]catalyst at 775 K gives

A)

glyoxal

B)

oxalic acid

C)

maleic anhydride

D)

fumaric acid

View Answer
57) Etherates are

A)

ethers

B)

solution in ether

C)

complexes of ethers with Lewis acid

D)

complexes of ethers with Lewis base

View Answer
58) When acetaldehyde is heated with Fehling's solution it gives a precipitate of

A)

\[Cu\]

B)

\[CuO\]

C)

\[C{{U}_{2}}O\]

D)

\[Cu+C{{u}_{2}}O+CuO\]

View Answer
59) The end product of\[C{{H}_{3}}COOH\xrightarrow{CaC{{O}_{3}}}A\xrightarrow{Heat}B\xrightarrow{N{{H}_{2}}OH}C\]

A)

acetaldehyde

B)

acetoxime

C)

formaldehyde oxime

D)

methyl cyanide

View Answer
60) 4-methyl benzene sulphonic acid reacts with sodium acetate to give

A)

B)

C)

D)

View Answer
61) Hydrogen peroxide when added to a solution of potassium permanganate acidified with sulphuric acid

A)

forms water only

B)

acts as an oxidising agent

C)

reduces sulphuric acid

D)

acts as a reducing agent

View Answer
62) Water is oxidised to oxygen by

A)

\[Cl{{O}_{2}}\]

B)

\[KMn{{O}_{4}}\]

C)

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

D)

fluorine

View Answer
63) The magnetic moment u, of transition metals is related to the number of unpaired electrons, n as

A)

\[\mu =n{{(n+2)}^{2}}\]

B)

\[\mu ={{n}^{2}}(n+2)\]

C)

\[\mu =\sqrt{n(n+2)}\]

D)

\[\mu =\frac{n}{\sqrt{(n+2)}}\]

View Answer
64) Which of the following is a carbonate ore?

A)

Malachite

B)

Diaspore

C)

Pyrolusite

D)

Cassiterite

View Answer
65) The substance used in the thermite process of reducing metal ores is

A)

thorium

B)

aluminium

C)

carbon

D)

platinum

View Answer
66) Cuprous ion is colourless while cupric ion is coloured because

A)

both have half-filled p and d-orbital

B)

cuprous ion has completed d-orbital and cupric ion has incomplete d-orbital

C)

cuprous ion has incomplete d-orbital and cupric ion has complete d-orbital

D)

both have unpaired electrons in d-orbital

View Answer
67) Copper sulphate solution reacts with KCN to give

A)

\[CuCN\]

B)

\[Cu{{(CN)}_{2}}\]

C)

\[{{K}_{3}}[Cu{{(CN)}_{4}}]\]

D)

\[{{K}_{2}}(Cu{{(CN)}_{4}}]\]

View Answer
68) Which of the following is weightless when weighed in magnetic field?

A)

\[ScC{{l}_{3}}\]

B)

\[FeC{{l}_{3}}\]

C)

\[TiC{{l}_{3}}\]

D)

\[VC{{l}_{3}}\]

View Answer
69) The number of amino acids in insulin is

A)

30

B)

21

C)

51

D)

40

View Answer
70) Which of the following contains cobalt?

A)

Vitamin-A

B)

Vitamin-C

C)

Vitamin-K

D)

Vitamin \[-{{B}_{12}}\]

View Answer
71) Which of the potassium salt is added to baking powder?

A)

\[KHC{{O}_{3}}\]

B)

\[KHS{{O}_{4}}\]

C)

Potassium citrate

D)

Potassium hydrogen tartarate

View Answer
72) A deliquescent white crystalline hydroxide X reacts with a nitrate Y to form another hydroxide which decomposes to give a insoluble brown layer of its oxide. X is a powerful cautery and breaks down the proteins of skin flesh to a pasty mass. X and Y are

A)

\[NaOH,AgN{{O}_{3}}\]

B)

\[NaOH,Zn{{(N{{O}_{3}})}_{2}}\]

C)

\[NaOH,Al{{(N{{O}_{3}})}_{3}}\]

D)

\[Ca{{(OH)}_{2}},HgN{{O}_{3}}\]

View Answer
73) The cation which gives a yellow precipitate with potassium chromate is

A)

\[N{{H}_{4}}\]

B)

\[B{{a}^{2+}}\]

C)

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

D)

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

View Answer
74) The hydrogen atoms in chloroform are

A)

acidic

B)

basic

C)

neutral

D)

unpredictable

View Answer
75) What is the compound C in the following sequence of reactions? \[Phenol\xrightarrow{NaOH}A\xrightarrow[47\,atm]{C{{O}_{2}},410\,K}B\xrightarrow{HCl}C\]

A)

Benzoicacid

B)

Salicylic acid

C)

Benzaldehyde

D)

Salicylaldehyde

View Answer
76) Victor Meyer's test is not given by

A)

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

B)

\[{{C}_{2}}{{H}_{5}}OH\]

C)

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

D)

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

View Answer
77) An organic compound with molecular formula \[{{C}_{3}}{{H}_{5}}N\]on hydrolysis forms an acid which reduces Fehling's solution. The compound can be

A)

ethanenitrile

B)

ethyl carbylamines

C)

ethaoxyethane

D)

propane nitrile

View Answer
78) Bubble gum contains

A)

thiokol rubber

B)

styrene-butadiene rubber

C)

isobutylene-isoprene rubber

D)

acrylonitrile-butadiene rubber

View Answer
79) Which of the following is a tetrabasic acid?

A)

Orthophosphoric acid

B)

Hypophosphorus acid

C)

Metaphosphoric acid

D)

Pyrophosphoric acid

View Answer
80) Glass reacts with

A)

oleum

B)

\[HF\]

C)

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

D)

\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]

View Answer
81) When\[HN{{O}_{3}}\]is dropped into the palm and washed with water it turns into yellow. It shows the presence of

A)

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

B)

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

C)

\[NO\]

D)

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

View Answer
82) In an octahedral crystal field splitting the number of orbitals pushed down in energy is

A)

3

B)

2

C)

5

D)

zero

View Answer
83) \[[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]N{{O}_{2}}\]and\[[Co{{(N{{H}_{3}})}_{4}}Cl.N{{O}_{2}}]Cl\]are

A)

optical

B)

geometrical

C)

ionisation

D)

linkage

View Answer
84) Hybridisation of\[Fe\]in\[{{K}_{3}}[Fe{{(CN)}_{6}}]\]is

A)

\[s{{p}^{3}}\]

B)

\[{{d}^{2}}s{{p}^{3}}\]

C)

\[s{{p}^{3}}{{d}^{2}}\]

D)

\[ds{{p}^{3}}\]

View Answer
85) In zinc blende structure, the coordination number of\[Z{{n}^{2+}}\]ion is

A)

2

B)

6

C)

8

D)

4

View Answer
86) The mole fraction of water in 20% aqueous solution of\[{{H}_{2}}{{O}_{2}}\]is

A)

\[\frac{20}{80}\]

B)

\[\frac{80}{20}\]

C)

\[\frac{68}{77}\]

D)

\[\frac{77}{68}\]

View Answer
87) 18 g of glucose is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at\[100{}^\circ C\]is

A)

759.2 torr

B)

760.5 torr

C)

76.8 torr

D)

752.40 torr

View Answer
88) Which of the following element outermost orbit's last electron has magnetic quantum number\[m=\text{0}\]?

A)

\[Na\]

B)

\[O\]

C)

\[Cl\]

D)

\[N\]

View Answer
89) The wavelength of radiation having frequency 1000 Hz is

A)

\[3\times {{10}^{13}}cm\]

B)

\[3\times {{10}^{7}}cm\]

C)

\[3000\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

D)

\[300\text{ }nm\]

View Answer
90) The bond dissociation energies of gaseous\[{{H}_{2}},C{{l}_{2}}\]and\[HCl\]are 104, 58 and 103 kcal respectively. The enthalpy of formation of \[HCl\]gas would be

A)

\[-\text{ }44\text{ }kcal\]

B)

\[-\text{ }88\text{ }kcal\]

C)

\[-22\text{ }kcal\]

D)

\[-\text{ }11\text{ }kcal\]

View Answer
91) A radioactive element with half-life 6.5 h has \[48\times {{10}^{19}}\]atoms. Number of atoms left after 26 h.

A)

\[3\times {{10}^{19}}\]

B)

\[6\times {{10}^{19}}\]

C)

\[12\times {{10}^{19}}\]

D)

\[24\times {{10}^{19}}\]

View Answer
92) \[_{13}A{{l}^{27}}\]is a stable isotope,\[_{13}A{{l}^{29}}\]is expected to disintegrate by

A)

\[\alpha -\]emission

B)

\[\beta -\]emission

C)

positron emission

D)

proton emission

View Answer
93) Which one of the following compounds has \[s{{p}^{2}}-\]hybridisation?

A)

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

B)

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

C)

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

D)

\[CO\]

View Answer
94) Of the following sets which one does not contain isoelectronic species?

A)

\[SO_{3}^{2-},\text{ }CO_{3}^{2-},\text{ }NO_{3}^{-}\]

B)

\[BO_{3}^{3-},\text{ }CO_{3}^{2-},\text{ }NO_{3}^{-}\]

C)

\[C{{N}^{-}},\text{ }{{N}_{2}},\text{ }C_{2}^{2-}\]

D)

\[PO_{4}^{3-},SO_{4}^{2-},ClO_{4}^{-}\]

View Answer
95) Among\[A{{l}_{2}}{{O}_{3}},Si{{O}_{2}},{{P}_{2}}{{O}_{3}}\]and\[S{{O}_{2}}\]the correct order of acid strength is

A)

\[{{P}_{2}}{{O}_{3}}<A{{l}_{2}}{{O}_{3}}<Si{{O}_{2}}<S{{O}_{2}}\]

B)

\[Si{{O}_{2}}<S{{O}_{2}}<A{{l}_{2}}{{O}_{3}}<{{P}_{2}}{{O}_{3}}\]

C)

\[A{{l}_{2}}{{O}_{3}}<Si{{O}_{2}}<{{P}_{2}}{{O}_{3}}<S{{O}_{2}}\]

D)

\[S{{O}_{2}}<{{P}_{2}}{{O}_{3}}<Si{{O}_{2}}<A{{l}_{2}}{{O}_{3}}\]

View Answer
96) The equilibrium constant for the reaction\[S{{O}_{3}}(g)S{{O}_{2}}(g)+\frac{1}{2}{{O}_{2}}(g)\]is\[{{K}_{c}}=4.9\times {{10}^{-2}}\]. The value of\[{{K}_{c}}\]for the reaction \[2S{{O}_{2}}(g)+{{O}_{2}}(g)2S{{O}_{3}}(g)\]will be

A)

416

B)

\[2.40\times {{10}^{-3}}\]

C)

\[9.8\times {{10}^{-2}}\]

D)

\[4.9\times {{10}^{-2}}\]

View Answer
97) A sample of\[N{{a}_{2}}C{{O}_{3}}.{{H}_{2}}O\]weighing 0.62 g is added to 100 mL of\[0.1\text{ }N\,{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\] solution. What will be the resulting solution?

A)

Neutral

B)

Basic

C)

Acidic

D)

Unpredictable

View Answer
98) Assertion An electrochemical cell can be set up only if the redox reaction is spontaneous. Reason (R) A reaction is spontaneous if free energy change is negative.

A)

Both assertion and reason are true and reason is the correct explanation of the assertion.

B)

Both assertion and reason are true but reason is not the correct explanation of assertion.

C)

Assertion is true, but reason is false.

D)

Assertion is false but reason is true.

View Answer
99) Random motion of colloidal particles is known as

A)

Dialysis

B)

Tyndall effect

C)

Brownian movement

D)

Diffusion

View Answer
100) On increasing the temperature, the rate of reaction increases because of

A)

more number of collisions

B)

decrease in mean free path

C)

more number of energetic electrons

D)

less number of energetic electrons

View Answer
101) Anaerobic photosynthetic bacteria appeared on the earth about

A)

500 million years ago

B)

1500 million years ago

C)

2500 million years ago

D)

3500 million years ago

View Answer
102) Many bacteria are now resistant to penicillin because

A)

penicillin cause gene mutations

B)

previously resistant forms survived and reproduced better than non-resistant forms

C)

hospital environment inhibits competition among bacteria

D)

penicillin triggers the synthesis of resistant proteins

View Answer
103) Cladogram represents

A)

features and shared characters depicting evolution in the form of a diagram

B)

population

C)

physiological relationships of organisms

D)

None of the above

View Answer
104) Viroids have

A)

single-stranded RNA not enclosed by protein coat

B)

single-stranded DNA not enclosed by protein coat

C)

double-stranded DNA enclosed by protein coat

D)

double-stranded RNA enclosed by protein coat

View Answer
105) E. coli lives in human intestine and cause

A)

urinary tract infection in infants only

B)

diarrhoea only in adults

C)

meningitis

D)

None of the above

View Answer
106) All are true about bacterial endospores except

A)

sporulation in bacteria is a method of reproduction

B)

spores of all medically important bacteria are killed by autoclaving at 121°C for 15 minutes

C)

spores can be stained by modified Zichi-Neelsen technique

D)

bacterial spores help them to survive under favourable conditions

View Answer
107) Diatoms do not decay easily because

A)

they have siliceous walls

B)

their body is impervious to water

C)

they are chitinous

D)

they are abundant in saline soil

View Answer
108) Sleeping sickness is caused by

A)

Trypanosoma

B)

Leishmania

C)

Entamoeba

D)

Plasmodium

View Answer
109) Myxamoebae of slime moulds are

A)

active vegetative forms

B)

stages to overcome un favourable conditions

C)

gametes which undergo sexual reproduction

D)

resultants of sexual reproduction

View Answer
110) The disease witches broom of leguminous family is caused by

A)

virus

B)

mycophage

C)

protozoan

D)

fungus

View Answer
111) In Pinus

A)

seed is winged but pollen grains are not

B)

both seed and pollen grains are wingless

C)

pollen grains are winged but seed is not

D)

both seeds and pollen grains are winged

View Answer
112) Which of the following plant does not belong to embryophyta?

A)

Dryopteris

B)

Funaria

C)

Cycas

D)

Ulothrix

View Answer
113) Hydra can parlyse prey by

A)

nematocysts

B)

tentacles

C)

mouth

D)

None of these

View Answer
114) The cysticercus form of Taenia can be traced in

A)

pig

B)

goat

C)

sheep

D)

man

View Answer
115) The typhlosole of earthworm is related with

A)

excretion

B)

respiration

C)

reproduction

D)

absorption

View Answer
116) Separating chromatids during metaphase and behaviour of chromosomes during mitotic and meiotic divisions can be best studied by

A)

phase contrast microscope

B)

SEM

C)

X-ray microscope

D)

cell-fractionation method

View Answer
117) In eukaryotic cells, the amount of basic proteins is often found to be

A)

more than the amount of DNA

B)

less than the amount of DNA

C)

equal to the amount of DNA

D)

None of the above

View Answer
118) Fluid mosaic model exhibits amphipathy because of

A)

glycoproteins

B)

phospholipids

C)

lipids

D)

glycolipids

View Answer
119) Most of the hydrolytic enzymes of lysosomes function at

A)

acidic pH

B)

basic pH

C)

neutral pH

D)

any pH

View Answer
120) Which one is indispensible for ATP synthesis?

A)

Calcium

B)

Sulphur

C)

Phosphorus

D)

Iron

View Answer
121) Occurrence of cells in diploid organisms containing multiples of the 2n genomes is known as

A)

aneuploidy

B)

haploidy

C)

amphidiploidy

D)

allopolyploidy

View Answer
122) The disorders such as alkaptonuria and phenylkeronuria are referred to as

A)

acquired disease

B)

congenital disease

C)

infectious disease

D)

All of these

View Answer
123) When DNA is formed from RNA, it is called

A)

D-DNA

B)

Z-DNA

C)

C-DNA

D)

A-DNA

View Answer
124) Which of the following term is not concerned with generic recombination in bacteria?

A)

Transformation

B)

Transduction

C)

Translation

D)

Conjugation

View Answer
125) Recessive gene for amaurotic idiocy in human is

A)

penetrance gene

B)

pleiotropic gene

C)

lethal gene

D)

epistaric gene

View Answer
126) The thick roots that hang down from a banyan tree are called

A)

stilt roots

B)

prop roots

C)

pneumatophores

D)

buttress root

View Answer
127) The reserve carbohydrates in onion are stored in the fleshy leaves. The characteristic smell of onion bulb is due to presence of

A)

sugars

B)

reserve carbohydrates

C)

sulphur compounds

D)

bad odour of the soil in which they are cultivated

View Answer
128) Syngenecious condition means

A)

anthers fused and filaments free

B)

both anthers and filaments fused

C)

filaments fused and anthers free

D)

filaments fused with carpals

View Answer
129) The caryopsis is a fruit

A)

that does not have fruit wall

B)

that is fleshy and many seeded

C)

in which fruit wall and seed coat are fused

D)

that dehisces to expel seed

View Answer
130) The respiratory quotient (RQ) of a germinating castor seed is

A)

equal to one

B)

greater than one

C)

less than one

D)

equal to zero

View Answer
131) Pure cellulose is obtained from

A)

root hairs

B)

stem hairs

C)

leaf hairs

D)

seed hairs

View Answer
132) Glisson's capsule is associated with

A)

kidney

B)

liver

C)

pancreas

D)

spleen

View Answer
133) Cyclosis is a term used for

A)

the active movement of Paramecium

B)

the active movement of the protoplasm in living cells

C)

the active movement of blood cells

D)

None of the above

View Answer
134) The type of plants having adaptations to check transpiration are

A)

xerophytes

B)

epiphytes

C)

lithophytes

D)

halophytes

View Answer
135) In the higher plants, nitrate ions absorbed from the soil are converted to ammonia in two steps. In second step, the electrons required for reduction of nitrite ions are donated by

A)

cytochrome \[{{\text{P}}_{\text{450}}}\]

B)

nitrate reductase

C)

ferredoxin

D)

nitrite reductase

View Answer
136) In \[{{C}_{4}}\]plants, the primary \[C{{O}_{2}}\]acceptor is

A)

3-PGA

B)

Oxaloacetic acid

C)

RuBP

D)

PEP

View Answer
137) Emulsification is the function of

A)

bile

B)

lipases

C)

oesterases

D)

proteases

View Answer
138) Which of the following cations is required for the conversion of prothrombin into active thrombin by thromboplastin?

A)

\[C{{u}^{2+}}\]

B)

\[P{{e}^{3+}}\]

C)

\[F{{e}^{2+}}\]

D)

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

View Answer

139) Match the different types of heart given in column \[\text{I}\] with their respective examples given in column\[\text{II}\text{.}\]Choose the answer showing correct combination of alphabets of two columns.

Column \[\text{I}\](Heart)	Column\[\text{II}\](Examples)
A. Myogenic	1. Limulus
B. Neurogenic	2. Mollusca
C. Branchial heart	3. Human
D. Pulmonary heart	4. Herdmania
	5. Shark

A B C D 2 1 5 3

1 2 3 5

2 4 5 1

4 1 3 5 The hearts of vertebrates, mutates and molluscs are considered myogenic.

View Answer

140) Tube feet is the locomotory organ of

A)

star fish

B)

jelly fish

C)

cray fish

D)

silver fish

View Answer
141) How many saddle joints can be traced in human body?

A)

2

B)

4

C)

8

D)

10

View Answer
142) Addison's disease results from

A)

hyposecretion of adrenal

B)

hypertrophy of gonads

C)

hyperactivity of cells of Leydig

D)

None of the above

View Answer
143) Glands of Ze is open into hair follicle of 'eye lashes'. They are modified

A)

sebaceous glands

B)

sweat glands

C)

mucous glands

D)

None of these

View Answer
144) Heterospory and seed habit is connected to

A)

bract

B)

strobilus

C)

petiole

D)

ligule

View Answer
145) Gall nuts on plants is produced by

A)

larva of dipterous insects

B)

larva of Anopheles

C)

microorganism

D)

fungi

View Answer
146) Biosphere is

A)

Government protected area

B)

ecosystem

C)

place of individual interaction

D)

earth's crust

View Answer
147) The conservation of genetic resources with in natural ecosystem is

A)

ex situ conservation

B)

in situ conservation

C)

Both and

D)

None of the above

View Answer
148) Respiratory disorders occur due to automobile exhaust because of the release of

A)

CO

B)

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

C)

Cl

D)

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

View Answer
149) Sal forest is

A)

tropical rain forest

B)

tropical evergreen forest

C)

temperate deciduous

D)

deciduous

View Answer
150) A hypertension drug is obtained from

A)

Sida

B)

Tulsi

C)

Azadirachta

D)

Rauwolffia

View Answer
151) Consider the following two statements and answer accordingly Assertion In alcoholic drink, the alcohol is converted into glucose in liver. Reason Liver cells are able to produce glucose from alcohol by fermentation.

A)

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

B)

Both Assertion and Reason are true but Reason is not the correct explanation of Assertion

C)

Assertion is true but Reason is false

D)

Both Assertion and Reason are false

View Answer
152) The yolk of avian eggs contain

A)

albumin

B)

provitelin

C)

vitellin and lecithin

D)

All of the above

View Answer
153) For being a good firewood, it must not be

A)

resinous

B)

non-smoky

C)

combustible

D)

easy to dry

View Answer
154) Cloning is meant for

A)

production of HGH gene in E. coli

B)

to preserve the genotype of organism

C)

to replace the original gene

D)

All of the above

View Answer
155) A slight opacity of cornea is

A)

mastitis

B)

cataract

C)

nebula

D)

catarrh

View Answer
156) The sporozoites of Plasmodium vivax are formed in

A)

gametocytes

B)

sporoblasts

C)

oocysts

D)

spores

View Answer
157) Diabetes in sipidus occurs due to hypersecretion of

A)

oxytocin

B)

vasopressin

C)

thymosine

D)

insulin

View Answer
158) Vascular grafts are made up of

A)

rubber tubes

B)

dacron or Teflon

C)

fibre glass

D)

plastic

View Answer
159) Hansen's disease is

A)

syphilis

B)

poliomyelitis

C)

mumps

D)

leprosy

View Answer
160) Syconus is characteristic of

A)

Ficus

B)

Jack fruit

C)

pineapple

D)

All of these

View Answer
161) Water enters from soil into the root hairs due to

A)

turgor pressure of roots hair

B)

osmotic pressure of root hair

C)

suction pressure

D)

diffusion pressure

View Answer
162) In recent years, presoaked laundry agent contains an enzyme

A)

pepsin

B)

flavin

C)

amylase

D)

subtilin

View Answer
163) Neoteny is seen in amphibians belonging to order

A)

Urodela

B)

Gymnophiona

C)

Anura

D)

Apoda

View Answer
164) Elephantiasis is caused by

A)

Entamoeba coli

B)

Tryponosoma gambiense

C)

Ascaris lumbricoides

D)

Wuchereria bancrofti

View Answer
165) Ergotamine tartarate extracted from Claviceps is used for cure of

A)

bodyache

B)

headache

C)

fever

D)

severe stomach pain

View Answer
166) The odd one among following is

A)

Nitrococcus, Nitrobacter, Nitrosomonas

B)

Rhizobium, Aulosira, Bacillus, Polymyxa

C)

Clostridiitm, Rhizobium, Nostoc

D)

Anabaena, Nastoc, Azotobacter, Clostridium

View Answer
167) Synzoospore is found in

A)

Ulothrix

B)

Volvox

C)

Vaucfieria

D)

Oedogonium

View Answer
168) Sponges have originated from

A)

ciliate protozoans

B)

sporozoan protozoans

C)

sarcodine protozoans

D)

choanoflagellate protozoans

View Answer
169) Chenopodium oil is most successfully used for the expulsion of

A)

tapeworm

B)

liver fluke

C)

flat worms

D)

  round worm

View Answer
170) The speciation is complete in isolated populations and again when come in contact there will be

A)

successful hybridization

B)

no hybridization

C)

fertile hybrid

D)

None of the above

View Answer
171) Schizogony of Plasmodium is also called as

A)

sporogony

B)

gamogony

C)

agamogony

D)

binary fission

View Answer
172) The secretion of macromolecules by fusing a transport vesicle to the plasma membrane is

A)

pinocytosis

B)

phagocytosis

C)

endocytosis

D)

exocytosis

View Answer
173) Amount of DNA present in the mitochondria of Neurospora is

A)

10%

B)

40%

C)

1%

D)

nil

View Answer
174) When we eat sugarcane, we are ingesting

A)

glucose

B)

starch

C)

glycogen

D)

cellulose

View Answer
175) Nitrogen is the main constituent of

A)

fats

B)

protein

C)

polyphosphates

D)

carbohydrates

View Answer
176) At the cellular level energy is released. This process is

A)

anabolic

B)

cacabolic

C)

oxidation process

D)

All of these

View Answer
177) Inorganic prosthetic groups is

A)

coenzyme

B)

activator

C)

hormone

D)

apoenzyme

View Answer
178) Heterozygosity can be ascertained by

A)

back cross

B)

reciprocal cross

C)

blending inheritance

D)

multiple crossing

View Answer
179) Pleiotropy is a term that refers to the situation in which a gene influences more than one trait. Its example is given by

A)

sickle cell anaemia

B)

haemophilia

C)

colour blindness

D)

Both and

View Answer
180) Production of hybridoma is an example of

A)

transgenesis

B)

cell cloning

C)

gene cloning

D)

None of these

View Answer
181) An orthotropus ovule has micropyie and cbalaza

A)

parallel to funicle

B)

parallel along with ovule

C)

at right angle to funicle

D)

in straight line with funicle

View Answer
182) ABA closes stomata but which hormone encourages them to open?

A)

GA

B)

Auxin

C)

Cytokinin

D)

Ethylene

View Answer
183) Which one of the following micronutrient is required by plants in least quantity?

A)

Mo

B)

B

C)

Zn

D)

Mn

View Answer
184) An example of a parasitic plant which is strictly epiphytic is

A)

Cuscuta

B)

Viscum

C)

Orobanche

D)

Rafflesia

View Answer
185) In which one of the following do the two names refer to one and the same thing?

A)

Krebs' cycle and Calvin cycle

B)

Tricarboxylic acid cycle and citric add cycle

C)

Citric acid cycle and Calvin cycle

D)

Tricarboxylic acid cycle and urea cycle

View Answer
186) Which is the place of cellulose digestion in ruminants?

A)

Rumen

B)

Reticulum

C)

Omassum

D)

Abomassum

View Answer
187) The most abundant granulocytes in human blood are

A)

basophils

B)

eosinophils

C)

neutrophils

D)

monocytes

View Answer
188) A medicine that promotes the secretion of excess urine from body is

A)

uretic

B)

monouretic

C)

diuretic

D)

muretic

View Answer
189) Number of cervical vertebra in cow is

A)

5

B)

6

C)

7

D)

11

View Answer
190) Eyes of cats glitter at night due to presence of

A)

luciferin

B)

tapetum cellulosum

C)

tapetum fibrosum

D)

porphyropsin

View Answer
191) The plant material which is widely used in the preparation of culture medium is

A)

(a ) Cycas revolute

B)

Cocos nucifera

C)

Pinus longifolia

D)

Borassus flabellifer

View Answer
192) A species is a collection of denies. The demes is a group of

A)

genes in different environment

B)

individuals in same environment

C)

chromosome in same organism

D)

population with a common gene pool

View Answer
193) Apple scab disease is caused by

A)

Ustilago

B)

Puccinia

C)

Erysiphe

D)

None of these

View Answer
194) Blackwood is obtained from

A)

Albizzia

B)

Tectona

C)

Dalbergia

D)

Manihot

View Answer
195) Water pollution is caused due to

A)

sewage and other wastes

B)

industrial effluents

C)

agricultural discharges

D)

All of the above

View Answer
196) Smallest animal virus is

A)

pox virus

B)

coliphage

C)

rhino virus

D)

polio virus

View Answer
197) Ethylene is

A)

gaseous hormone

B)

largest hormone

C)

liquid-gas mixture

D)

solid hormone

View Answer
198) Circinate vernation in leaves is caused due to

A)

epinasty

B)

hyponasty

C)

apostrophe

D)

None of these

View Answer
199) Semen consists of an enzyme

A)

seminase

B)

hyaluronidase

C)

vasiculase

D)

ligase

View Answer
200) After exponential increase, population growth declines and stagnates. The growth curve is

A)

S-shaped

B)

J-shaped

C)

straight line

D)

circular

View Answer

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done BHU PMT (Screening) Solved Paper-2011 Total Questions - 200

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BHU PMT (Screening) Solved Paper-2011 Total Questions - 200