Solved papers for BHU PMT BHU PMT Solved Paper-2002

BHU PMT Solved Paper-2002 Total Questions - 200

1) In the given transistor circuit, the base current is\[B={{B}_{0}}\,\,\sin \left( kx-\omega t \right)\]. The value of \[{{E}_{0}}={{B}_{0}}\] is:                [BHU PMT-2002]

A)

\[{{E}_{0}}\omega ={{B}_{0}}k\]

B)

\[{{E}_{0}}{{R}_{0}}=\omega k\]

C)

\[{{E}_{0}}k={{B}_{0}}\omega \]

D)

                \[r\]

View Answer
2) An astronomical telescope has an objective of Focal length 100 cm and magnifying power 50. The distance between the two lenses in normal adjustment will be.                                                      [BHU PMT-2002]

A)

                \[R\]

B)

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

C)

                \[\frac{256\,R}{81}\]

D)

                \[\frac{81\,R}{256}\]

View Answer
3) An electromagnetic wave passing through Vacuum is described by the equation:                 \[\frac{16\,R}{9}\] And \[\frac{9\,R}{16}\] then:                                             [BHU PMT-2002]

A)

                \[n\]

B)

                \[\frac{3}{2}n\]

C)

                \[\frac{n}{2}\]

D)

                \[2n\]

View Answer
4) A wire of radius \[n\] has resistance \[{{T}_{1}}\]. If it is stretched to a radius of \[{{T}_{2}}\left( {{T}_{1}}>{{T}_{2}} \right).\], its resistance becomes:                         [BHU PMT-2002]

A)

                \[{{C}_{p}}\left( {{T}_{1}}-{{T}_{2}} \right)\]

B)

                \[{{C}_{V}}\left( {{T}_{1}}-{{T}_{2}} \right)\]

C)

                \[R\left( {{T}_{1}}-{{T}_{2}} \right)\]

D)

                \[Zero\]

View Answer
5) Electric potential of earth is taken to be zero because the earth is good:                             [BHU PMT-2002]

A)

                Semiconductor

B)

                Conductor

C)

                Insulator

D)

                dielectric

View Answer
6) An open resonating tube has fundamental frequency of\[x\]. When half of its length is dipped into water then its fundamental frequency will be:                                                                                                [BHU PMT-2002]

A)

                \[x\]

B)

                \[{{x}^{2}}\]

C)

                \[x\]

D)

                \[m\]

View Answer
7) A gas expands adiabatically from a temperature \[h\] to a temperature \[d\] The work done in this process is:                [BHU PMT-2002]

A)

                \[mg\left( 1+\frac{h}{d} \right)\]

B)

                \[mg{{\left( 1+\frac{h}{d} \right)}^{2}}\]

C)

                \[mg\left( 1-\frac{h}{d} \right)\]

D)

                \[mg\]

View Answer
8) The potential energy of a body is given by \[A-B{{x}^{2}}\] (where \[\left( E \right)\] is the displacement). The magnitude of force acting on the particle is :                                                                                                       [BHU PMT-2002]

A)

                Inversely proportional to \[\left( v \right)\]

B)

                Proportional to \[\left( F \right)\]

C)

                Proportional to \[F{{v}^{-2}}\]

D)

                Constant

View Answer
9) An open knife edge of mass \[F{{v}^{-1}}\] is dropped from a height \[E{{v}^{-2}}\] on a wooden floor. If the blade penetrates upto the depth \[E{{v}^{2}}\] in to the wood, the average resistance offered by the wood to the knife edge is:                             [BHU PMT-2002]

A)

                \[n-p-n\]

B)

                \[{{K}_{\gamma }}-X-ray\]

C)

                \[n=4\,to\,n=1\]

D)

                \[n=3\,to\,n=1\]

View Answer
10) If the energy\[n=3\,to\,n=2\], velocity \[n=2\,to\,n=1\] and force \[\frac{4}{3}\] be taken as fundamental quantity, then the dimension of mass will be:                                                                                                                                                        [BHU PMT-2002]

A)

                \[240\]

B)

                \[120\]

C)

                \[60\]

D)

                \[zero\]

View Answer
11) In an \[2A/s\] transistor:                           [BHU PMT-2002]

A)

                Negative charge moves from collector to base

B)

                Negative charge moves from emitter to base

C)

                Holes move from base to collector

D)

                Holes move from emitter to base

View Answer
12) For the production of characteristic\[+10.0\,\,V\]the electron transition is:                       [BHU PMT-2002]

A)

                \[-10.0\,\,V\]

B)

                \[+2.5\,\,V\]

C)

                \[-2.5\,\,V\]

D)

                \[10\mu F\]

View Answer
13) The focal length of a lens of refractive index 1.5 in air, is 15 cm. When it is immersed in a liquid of refractive index \[250\,\,V\], then its focal length in liquid will be:                                                           [BHU PMT-2002]

A)

                \[5\mu F\]cm

B)

                \[200\,\,V\] cm

C)

                \[300\,\,V\] cm

D)

                \[400\,\,V\]

View Answer
14) The current passing through an inductor coil of 5 H is decreasing at the rate of \[500\,\,V\], the emf developed across the coil is:              [BHU PMT-2002]

A)

                \[l\]

B)

                \[M\]

C)

                \[\frac{2}{\pi }\]

D)

                \[16\,\,Ml\]

View Answer
15) A capacitor of \[4\,\,Ml\] charged upto \[2\,\,Ml\] is connected in parallel with another capacitor of \[Ml\] charged upto 100V. The common potential is:                                                                   [BHU PMT-2002]

A)

                \[x\]

B)

                \[y=7\,\sin \left[ 7\,\,\pi t-0.4\,\pi x+\frac{\pi }{3} \right]\]

C)

                \[\frac{2\pi }{49}m/s\]

D)

                \[\frac{49}{2\pi }m/s\]

View Answer
16) A string of length \[49\,\pi \,m/s\] is fixed at one end and carries a mass \[17.5\,m/s\] at the other end. The string makes \[{{\omega }_{1}}\] rev/s around the vertical axis through the fixed end as shown in the figure, the tension in the string is:                                                    [BHU PMT-2002]

A)

                \[{{\omega }_{2}}\]

B)

                \[{{\omega }_{2}}-{{\omega }_{1}}\]

C)

                \[{{\omega }_{1}}:{{\omega }_{2}}\]

D)

                \[\sqrt{{{\omega }_{1}}}:\sqrt{{{\omega }_{2}}}\]

View Answer
17) The equation of wave motion (with in second and \[\sqrt{{{\omega }_{2}}}:\sqrt{{{\omega }_{1}}}\] in meter) is given by \[m\] The velocity of wave will be:                                  [BHU PMT-2002]

A)

                \[a\]

B)

                \[\mu \]

C)

                \[g\left( \cos \,\,a-\mu \,\,\sin \,\,a \right)\]

D)

                \[g\left( sin\,\,a-\mu \,\,\cos \,\,a \right)\]

View Answer
18) In cyclic process, work done by the process is:                                                                          [BHU PMT-2002]

A)

                Independent of heat given to the system

B)

                More than the heat given to system

C)

                Equal to heat given to the system

D)

                zero

View Answer
19) The angular speed of a body changes from \[\mu \,\,\cos \,\,a\] to \[g\,\,\sin \,\,a\] without applying a torque but due to change in its moment of inertia. The ratio of radii of gyration in the two cases is:              [BHU PMT-2002]

A)

                \[Zero\]

B)

                \[0.125\,\,kg\]

C)

                \[0.5\,\,kg\]

D)

                \[0.25\,\,kg\]

View Answer
20) A body of mass \[a\]slides down on a rough plane inclination\[10\,mA\]. If \[200/19\,\,mA\] is the coefficient of friction, the acceleration of the body will be:      [BHU PMT-2002]

A)

                \[10.5\,\,mA\]

B)

                \[0.5\,\,mA\]

C)

                \[9.5\,\,mA\]

D)

                \[2.5\times {{10}^{-17}}\,\,J\]

View Answer
21) Half-life of radium is 1600 years. If the initial mass is 1 kg, what is the amount of radium left after 4800 years?                                   [BHU PMT-2002]

A)

                \[1.25\times {{10}^{-17}}\,\,J\]

B)

                \[4.4\times {{10}^{-19}}\,\,J\]

C)

                \[2.5\times {{10}^{-19}}\,\,J\]

D)

                \[1.33\times {{10}^{8}}\,m/s\]

View Answer
22) The current gain \[4\times {{10}^{8}}\,m/s\] of a transistor is 0.95. The Change in emitter current\[2.25\times {{10}^{8}}\,m/s\]. The radium lift After 4800 years.                                       [BHU PMT-2002]

A)

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

B)

                \[1600\,\,A{{m}^{-1}}\]

C)

                \[2.4\times {{10}^{-5}}\,\,Wb\]

D)

                \[0.2\,c{{m}^{2}}\]

View Answer
23) The energy of photon of light wavelength 450 nm is:                                                                    [BHU PMT-2002]

A)

                \[1788\]

B)

                \[1192\]

C)

                \[596\]

D)

                \[298\]

View Answer
24) The refractive index of water is 1.33. The speed of light in water is:                                       [BHU PMT-2002]

A)

                \[12.981\times {{10}^{2}}\,\,{{m}^{2}}\]

B)

                \[9.281\times {{10}^{9}}\,\,{{m}^{2}}\]

C)

                \[1.69\times {{10}^{12}}\,\,{{m}^{2}}\]

D)

                \[4.529\times {{10}^{9}}\,\,{{m}^{2}}\]

View Answer
25) A magnetizing field of \[5\,\,m/s\] produces a magnetic flux \[165\,\,Hz\] in an iron bar of cross-sectional area\[335\,\,m/s\]. The susceptibility of an iron bar will be:                                      [BHU PMT-2002]

A)

                \[6\]

B)

                \[5\]

C)

                \[3\]

D)

                \[4\]

View Answer
26) What is the area of the plate of a 3F parallel plate Capacitor, if the separation between the plates is 5 mm?                                                       [BHU PMT-2002]

A)

                \[4\mu m\]

B)

                \[1\,m\]

C)

                \[1\,\mu m\]

D)

                \[0.3\,\mu m\]

View Answer
27) A bus is moving with velocity of \[3\,\mu m\] towards a huge wall. The driver sounds a horn of frequency\[3\,\,s\]. If the speed of sound in air is \[4\,\,s\].The number of beats heard per second by the passengers in the bus will be:           [BHU PMT-2002]

A)

                \[5\,\,s\]

B)

                \[6\,\,s\]

C)

                \[\overset{\to }{\mathop{a}}\,\]

D)

                \[\overset{\to }{\mathop{b}}\,\]

View Answer
28) The maximum wavelength of radiation emitted at 900 K is \[\left( \overset{\to }{\mathop{a}}\,+\overset{\to }{\mathop{b}}\, \right)\times \left( \overset{\to }{\mathop{a}}\,-\overset{\to }{\mathop{b}}\, \right)\]. The maximum wavelength of Radiation emitted at 1200 K, will be:                                                                                                    [BHU PMT-2002]

A)

                \[2\left( \overset{\to }{\mathop{b}}\,\times \overset{\to }{\mathop{a}}\, \right)\]

B)

                \[-2\left( \overset{\to }{\mathop{b}}\,\times \overset{\to }{\mathop{a}}\, \right)\]

C)

                \[\overset{\to }{\mathop{b}}\,\times \overset{\to }{\mathop{a}}\,\]

D)

                \[\overset{\to }{\mathop{a}}\,\times \overset{\to }{\mathop{b}}\,\]

View Answer
29) The moment of inertia of a body about a given Axis is 2.4 kg-m2. To produce a rotational kinetic Energy of 750 J, an angular acceleration of a 5 rad/s2 must be applied about that axis for:            [BHU PMT-2002]

A)

                \[n\]

B)

                \[2\]

C)

                \[-2\]

D)

                \[+1\]

View Answer
30) If \[-1\] and \[5\times {{10}^{-5}}\,T\]are two vectors then the value of \[3\times {{10}^{-5}}\,T\]is :                    [BHU PMT-2002]

A)

                \[1.25\times {{10}^{-4}}\,T\]

B)

                \[0.5\times {{10}^{-5}}\,T\]

C)

                \[{{v}_{d}}\]

D)

                \[i\]

View Answer
31) The temperature of the sun can be found out by using:                                              [BHU PMT-2002]

A)

                Wien?s displacement law

B)

                Kepler?s law of motion

C)

                Stefan?s Boltzmann law

D)

                Planck?s law

View Answer
32) In the Bohr?s model of hydrogen atom, the ratio of the kinetic energy to the total energy of the electron in the \[\frac{{{v}_{d}}}{8}\]th quantum state is:                                                                                                            [BHU PMT-2002]

A)

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

B)

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

C)

                \[{{v}_{d}}\]

D)

View Answer
33) When the distance between slits of Young?s double slit experiment is reduced to half, then the figure width will become:                           [BHU PMT-2002]

A)

                constant

B)

                Four times

C)

                two times

D)

                half

View Answer
34) Magnetic field intensity at the center of coil of 50 turns, 0.5 m radius and carrying a current of 2 A, is:                   [BHU PMT-2002]

A)

                \[{{A}_{1}},{{A}_{2}},{{A}_{3}}\]

B)

                \[A_{1}^{2}\omega _{1}^{2}=A_{2}^{2}\omega _{2}^{2}=A_{3}^{2}\omega _{3}^{2}\]

C)

                \[A_{1}^{2}{{\omega }_{1}}=A_{2}^{2}{{\omega }_{2}}=A_{3}^{2}{{\omega }_{3}}\]

D)

                \[{{A}_{1}}\omega _{1}^{2}={{A}_{2}}\omega _{2}^{2}={{A}_{3}}\omega _{3}^{2}\]

View Answer
35) A drift velocity of free electrons in a conductor is \[{{A}_{1}}{{\omega }_{1}}={{A}_{2}}{{\omega }_{2}}={{A}_{3}}{{\omega }_{3}}\], when the current \[70\,\,dynes/cm\] is flowing in it. If both the radius and current are doubled, the drift velocity will be:                                                 [BHU PMT-2002]

A)

                \[N/m\]

B)

                \[7\times {{10}^{3}}\,N/m\]

C)

                \[7\times {{10}^{2}}\,N/m\]

D)

                \[7\times {{10}^{-2}}\,N/m\]

View Answer
36) The angular velocities of three bodies in simple harmonic motion are \[70\,N/m\] with their respective amplitudes as\[2700\,\,{{m}^{3}}\]. If all the three bodies have same mass and velocity, then: [BHU PMT-2002]

A)

\[1900\,\,{{m}^{3}}\]

B)

\[1700\,\,{{m}^{3}}\]

C)

\[1500\,\,{{m}^{3}}\]

D)

\[{{v}_{0 }}\]

View Answer
37) If the value of surface tension of a liquid is\[\mu \], then its value in \[\frac{v_{0}^{2}}{\mu }\] will be: [BHU PMT-2002]

A)

                \[{{\left( \frac{{{v}_{0}}}{{{\mu }_{g}}} \right)}^{2}}\]

B)

                \[\frac{v_{0}^{2}}{{{\mu }_{g}}}\]

C)

                \[\frac{v_{0}^{2}}{2{{\mu }_{g}}}\]

D)

                \[{{v}_{1}}\]

View Answer
38) A balloon contains 1500m3 of a helium at 27°C and 4 atmospheric pressure. The volume of helium at -3°C temperature and 2     atmospheric pressure will be :                                [BHU PMT-2002]

A)

                \[{{v}_{2}}\]

B)

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

C)

                \[\frac{{{v}_{1}}{{v}_{2}}}{4}\]

D)

                \[\frac{{{v}_{1}}+{{v}_{2}}}{2}\]

View Answer
39) A car is moving along a straight horizontal road with a speed \[\frac{{{v}_{1}}-{{v}_{2}}}{2}\]. If the coefficient of friction between the tyres and the road is \[\overset{\circ }{\mathop{\text{A}}}\,\], the shortest Distance in which the car be stopped is :                 [BHU PMT-2002]

A)

                \[\overset{\circ }{\mathop{\text{A}}}\,\]

B)

                \[1.7\,eV\]

C)

                \[1.\,6\,\,eV\]

D)

                \[1.5\,\,eV\]

View Answer
40) A car travelling on a straight track moves with uniform velocity of \[1.0\,\,eV\] for some time and with uniform velocity \[\overset{\circ }{\mathop{\text{A}}}\,\] for the next equal time the average velocity of the car is:            [BHU PMT-2002]

A)

                \[\overset{\circ }{\mathop{\text{A}}}\,\]

B)

                \[0.\text{6}~\text{mm}\]

C)

                \[0.\text{5 mm}~\]

D)

                \[0.4\text{5 mm}~\]

View Answer
41) Threshold wavelength of a metal is 4000 \[0.4\text{ mm}~\]. If Light of wavelength 3000 \[-8\times {{10}^{-22}}J\] irradiates the surface, the maximum kinetic energy of photo electron is:                                                            [BHU PMT-2002]

A)

                \[-16\times {{10}^{-22}}J\]

B)

                \[8\times {{10}^{-22}}J\]

C)

                \[16\times {{10}^{-22}}J\]

D)

                \[A\]

View Answer
42) The fringe width for a source of light of wavelength 5000 \[\mathbf{B}\] in the Young's experiment, is 0.5 mm. If the source is replaced by another source of wavelength 6000 \[4\,\Omega \], keeping other setting same, the fringe width will be :                                                                                                                                                    [BHU PMT-2002]

A)

                \[6\,\Omega \]

B)

                \[3\,\Omega \]

C)

                \[20\,\Omega \]

D)

                \[3.33\times {{10}^{8}}\,m/s\]

View Answer
43) A dipole moment of a dipole is 16 x 10 26 mC and is situated in an electric Field of intensity 104 V/m, its minimum energy will be:                                                                                                                 [BHU M-2012]

A)

                \[3.18\times {{10}^{8}}\,m/s\]

B)

                \[2.12\times {{10}^{8}}\,m/s\]

C)

                \[2.90\times {{10}^{8}}\,m/s\]

D)

                \[0.\text{18 gauss},\text{ }0.\text{18}\sqrt{3}\text{ gauss}\]

View Answer
44) The equivalent resistance between points \[0.98\text{ gauss},\text{ }0.9\sqrt{2}\text{ gauss}\]and\[B\] is :                                                     [BHU PMT-2002]

A)

                \[1.07\text{ gauss},\text{ 0}\text{.11}\sqrt{2}\text{ gauss}\]

B)

                \[\text{4}000\text{ }\overset{\circ }{\mathop{\text{A}}}\,\]

C)

                \[\text{2 eV}\]

D)

                \[\text{0}\text{.5}\,\text{eV}\]

View Answer
45) A ray of light is incident at the surface of separation of a medium with velocity of light at an angle 45° and is refracted in the medium at an angle 30°. Velocity of light in the medium will be:                     [BHU PMT-2002]

A)

                \[1.1\,\text{eV}\]

B)

                \[1.5\,\text{eV}\]

C)

                \[2.0\,\text{eV}\]

D)

                \[\text{1}0.\text{2 eV}\]

View Answer
46) If the earth's field induction at a place is 0.36 Gauss and the angle of dip is 60°. The Horizontal and vertical component of the field Will be respectively:                                             [BHU PMT-2002]

A)

                \[\text{0}\text{.102}\]

B)

                \[\text{0}\text{.51 eV}\]

C)

                \[\text{20 eV}\]

D)

                \[\text{1020 eV}\]

View Answer
47) Light of wavelength \[x={{h}^{2}}\] is incident on a metal plate whose work function is\[x=0.5\,h\]. The maximum kinetic energy of the emitted photo-electron will be :                                 [BHU PMT-2002]

A)

                \[x=2h\]

B)

                \[x=h\]

C)

                \[{{10}^{7}}\,\,\pi J\]

D)

                \[{{10}^{4}}\,\,\pi J\]

View Answer
48) The energy diffuse between the first two levels of hydrogen atom is\[{{10}^{2}}\,\,\pi J\]. For another element of atomic number 10 and mass number 20, this will be :                                                   [BHU PMT-2002]

A)

                \[{{10}^{3}}\,\,\pi J\]

B)

                \[V={{I}_{b}}{{R}_{b}}\]

C)

                \[\Rightarrow \]

D)

                \[{{R}_{b}}=\frac{V}{{{I}_{b}}}\]

View Answer
49) If the change in the value of g at a height h above the surface of the earth is the same as at a depth x below its surface, then:                                                                                                     [BHU M-2012]

A)

                \[{{I}_{b}}=35\mu A=35\times {{10}^{-6}}A\]

B)

                \[\therefore \]

C)

                \[{{R}_{b}}=\frac{7}{35\times {{10}^{-6}}}\]

D)

                \[=200\times {{10}^{3}}\,\Omega \]

View Answer
50) The heat energy absorbed by a system in going through a cyclic process shown in figure is : [BHU PMT-2002]

A)

                \[=200k\,\Omega \]

B)

                \[M=-\frac{{{f}_{o}}}{{{f}_{e}}},\]

C)

                \[{{f}_{o}}\]

D)

                \[{{f}_{e}}\]

View Answer
51) The product obtained by the reaction of ethyl amine with acetyl chloride is:

A)

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

B)

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

C)

\[{{C}_{2}}{{H}_{5}}NHCOC{{H}_{3}}\]

D)

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

View Answer
52) The disintegration constant of a radioactive isotope whose half-life is 3 h is:

A)

1.57 per hour

B)

1.92 per hour

C)

1.04 per hour

D)

0.231 per hour

View Answer
53) Acetaldehyde on polymerisation with cone. \[{{H}_{2}}S{{O}_{4}}\]produce:

A)

para-aldehyde

B)

meta-aldehyde

C)

trioxy acetaldehyde

D)

none of the above

View Answer
54) 0.2595 g of an organic compound in a quantitative analysis yielded 0.35 g of the barium sulphate. The percentage of sulphur in the compound is:

A)

48.76

B)

36.62

C)

24.45

D)

18.52

View Answer
55) The least soluble alcohol in water is:

A)

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

B)

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

C)

\[{{C}_{3}}{{H}_{7}}OH\]

D)

\[{{C}_{4}}{{H}_{9}}OH\]

View Answer
56) Metallic tin and cone.\[HN{{O}_{3}}\]reacts to produce:

A)

meta stannic acid

B)

stannic nitrate

C)

stannous nitrite

D)

stannous nitrate

View Answer
57) The number of atoms present in 10.8 g of silver is : [atomic weight of silver = 108]

A)

\[6.123\times {{10}^{23}}\]

B)

\[6.312\times {{10}^{22}}\]

C)

\[6.023\times {{10}^{22}}\]

D)

\[6.076\times {{10}^{23}}\]

View Answer
58) The IUPAC name of the following compound\[C{{H}_{3}}CH({{C}_{2}}{{H}_{5}})CH=CHC{{H}_{3}}\]is:

A)

2-ethyl-but-2-ene

B)

4-ethyl-pent-2-ene

C)

4-methyl-hex-2-ene

D)

5-methyl-pen-2-ene

View Answer
59) The heat of formation of methane at\[25{}^\circ C\]at a constant pressure is\[-17.890\text{ }kcal\]. Its heat of formation at constant volume is : [\[R=1.987\]kcal\[degre{{e}^{-1}}mo{{l}^{-1}}\]]

A)

\[-17.297\text{ }kcal\]

B)

+17.297 kcal

C)

\[-172.97\text{ }kcal\]

D)

+172.97 kcal

View Answer
60) The most covalent bond is:

A)

\[CS\]

B)

\[CO\]

C)

\[CF\]

D)

\[CBr\]

View Answer
61) The ore containing silver is:

A)

galena

B)

dolomite

C)

limonite

D)

magnetite

View Answer
62) \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\xrightarrow{{}}2{{C}_{2}}{{H}_{5}}OH+2C{{O}_{2}}\] The above conversion is only possible by:

A)

maltase

B)

zymase

C)

diastase

D)

invertase

View Answer
63) The solution of sodium meta aluminate on boiling with ammonium chloride gives a white precipitate of:

A)

\[A{{l}_{2}}{{O}_{3}}\]

B)

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

C)

\[Al{{(OH)}_{3}}\]

D)

\[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}.A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\]

View Answer
64) Beilstein's test is the test for the identification of:

A)

nitrogen

B)

sulphur

C)

halogens

D)

none of these

View Answer
65) By dissolving 10 g of a non-volatile solute in 100 g of benzene, the boiling point rises by\[1{}^\circ C\]. The molecular mass of solute is : [\[{{k}_{b}}\]for benzene\[=2.53\text{ }k{{m}^{-1}}\]]

A)

235 g

B)

352 g

C)

250 g

D)

253 g

View Answer
66) The\[{{H}^{+}}\]ion concentration of a solution is 1 mol/L. Its pH is:

A)

0.1

B)

1.5

C)

1.0

D)

0

View Answer
67) The structure of\[{{H}_{2}}{{O}_{2}}\]is:

A)

planar

B)

open book structure

C)

bent

D)

linear

View Answer
68) The best conductor of electricity is a 0.1 M solution of:

A)

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

B)

\[CH{{ }_{3}}COOH\]

C)

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

D)

boric acid

View Answer
69) Two mole of a perfect gas at\[{{27}^{o}}C\]is compressed reversibly and isothermally from a pressure of \[1.01\times {{10}^{5}}N{{m}^{-2}}\]to\[5.05\times {{10}^{6}}N{{m}^{-2}}\]. The work done is:

A)

\[1.9518\times {{10}^{4}}J\]

B)

\[2.6472\times {{10}^{7}}J\]

C)

\[1.3527\times {{10}^{5}}J\]

D)

\[2.2226\times {{10}^{6}}j\]

View Answer
70) The correct set of quantum numbers is:

A)

\[n=2,l=1,m=0,s=0\]

B)

\[n=2,,l=-2,m=1,s=+\frac{1}{2}\]

C)

\[n=2,,l=2,m=-1,s=-\frac{1}{2}\]

D)

\[n=2,,l=1,m=0,s=+\frac{1}{2}\]

View Answer
71) Fulminating gold is:

A)

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

B)

\[A{{u}_{2}}S\]

C)

\[Au(NH{{ }_{2}})=NH\]

D)

\[H[Au{{(Cl)}_{4}}]\]

View Answer
72) The reactivity of transition elements decreases with:

A)

the decrease in the atomic number

B)

the increase in the atomic number

C)

low heat of hydration

D)

none of the above

View Answer
73) Glucose cannot be classified as:

A)

aldose

B)

carbohydrate

C)

hexose

D)

oligosaccharide

View Answer
74) The reaction in which\[\Delta H\]is positive as known as:

A)

endothermic

B)

exothermic

C)

polymorphic

D)

polytropic

View Answer
75) \[{{C}_{2}}{{H}_{5}}CH=C{{H}_{2}}\xrightarrow[{}]{H-X}A\] The product A is identified as:

A)

\[{{C}_{2}}{{H}_{5}}CHXC{{H}_{3}}\]

B)

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

C)

\[{{C}_{2}}{{H}_{5}}CHC{{H}_{3}}X\]

D)

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

View Answer
76) Concentrated\[{{H}_{2}}S{{O}_{4}}\]is diluted by adding:

A)

acid to water

B)

water to acid

C)

distilled water to acid

D)

all of the above

View Answer
77) The reaction of 2-bromobutane with alcoholic KOH is known as:

A)

halogenation

B)

hydrogenation

C)

dehydrogenation

D)

dehydrohalogenation

View Answer
78) The incorrect statement is:

A)

Anhydrous\[AlC{{l}_{3}}\]is a covalent substance

B)

Ionic compounds generally have low m.p. and b.p.

C)

A molecule shows a more stable form as compared to individual atom

D)

\[CC{{l}_{4}}\]is a non-polar solvent

View Answer
79) Ferric ion forms a Prussian blue coloured precipitate of:

A)

\[{{K}_{4}}[Fe{{(CN)}_{6}}]\]

B)

\[{{K}_{3}}[Fe{{(CN)}_{6}}]\]

C)

\[Fe{{(CNS)}_{3}}\]

D)

\[F{{e}_{4}}{{[Fe{{(CN)}_{6}}]}_{3}}\]

View Answer
80) The deficiency of vitamin\[{{B}_{1}}\]causes:

A)

beri-beri

B)

dermatitis

C)

scurvy

D)

rickets

View Answer
81) Two solutions containing 0.75 g of urea (mol. wt. 60) and 1.5 g of compound A in 100 g water, freeze at the same temperature. The molecular weight of A is:

A)

60

B)

30

C)

120

D)

240

View Answer
82) Gold number is minimum in case of:

A)

starch

B)

egg albumin

C)

gelatin

D)

gum Arabic

View Answer
83) Isopropyl alcohol and n-propyl alcohols are the example of:

A)

tautomerism

B)

chain isomerism

C)

position isomerism

D)

geometrical isomerism

View Answer
84) Which is not present in chlorophyll?

A)

Calcium

B)

Carbon

C)

Hydrogen

D)

Magnesium

View Answer
85) Urotropine is obtained by the reaction of \[N{{H}_{3}}\]with:

A)

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

B)

\[HCHO\]

C)

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

D)

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

View Answer
86) The compound dehydrate most easily is:

A)

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

B)

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

C)

D)

View Answer
87) Nylon-6 is obtained from:

A)

caprolactum

B)

butadiene

C)

adipic acid

D)

tetrafluoro ethylene

View Answer
88) Universal gas constant (R) is divided by Avogadro's number (N) then the value is equivalent to:

A)

van der Waals constant

B)

Rydberg's constant

C)

Planck's constant

D)

Boltzmann's constant

View Answer
89) Removal of basic oxide from metal before electroplating is known as:

A)

poling

B)

galvanizing

C)

pickling

D)

anodizing

View Answer
90) Purple of cassius is:

A)

platinum solution

B)

gold solution

C)

copper solution

D)

silver solution

View Answer
91) An extremely hot copper wire reacts with steam to produce:

A)

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

B)

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

C)

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

D)

\[CuO\]

View Answer
92) The first hormone synthesised chemically in the laboratory is:

A)

adrenalin

B)

insulin

C)

estrone

D)

cortisone

View Answer
93) The compound which is not organometallic is:

A)

tetraethyl lead

B)

trimethyl aluminium

C)

ethylmagnesium bromide

D)

sodium ethoxide

View Answer
94) Neon lamps are used in botanical gardens and in green houses as they:

A)

provides oxygen

B)

provide better light

C)

stimulates growth of plants

D)

none of the above

View Answer
95) Methyl phenyl ether on heating with HI produce:

A)

methyl alcohol and phenyl ether

B)

methyl iodide and phenol

C)

methyl iodide and phenyl iodide

D)

benzyl alcohol and methane

View Answer
96) The correct order of atomic radii is:

A)

\[F>K>Na>Li\]

B)

\[Li>Na>K>F\]

C)

\[F>Li>Na>K\]

D)

\[Na>K>Li>F\]

View Answer
97) The cell constant of a solution, whose specific conductance and observed conductance are same, is equal to:

A)

1

B)

0

C)

10

D)

100

View Answer
98) A primary amine on treatment with carbon disulphide and\[HgC{{l}_{2}}\]produce:

A)

alkyl cyanide

B)

alkyl isothiocyanate

C)

alkyl cyanate

D)

carbyl amine

View Answer
99) By removing a salt bridge between the two half cells, the voltage:

A)

increase gradually

B)

increase rapidly

C)

does not change

D)

drops to zero

View Answer
100) A substance reacts according to first order kinetics. The rate constant for the reaction is\[1\times {{10}^{-2}}{{s}^{-1}}\]. Its initial concentration is 1 M. Its initial rate is:

A)

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

B)

\[1\times {{10}^{2}}\]

C)

\[1\times {{10}^{-2}}\]

D)

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

View Answer
101) The maintenance of internal favourable conditions by a self-regulated mechanism, in spite of the fact that there are changes in environment, is called:

A)

entropy

B)

enthalpy

C)

homeostasis

D)

steady state

View Answer
102) Reserve food material of animal body is :

A)

lipid

B)

starch

C)

glycogen

D)

protein

View Answer
103) Apoenzyme together with coenzyme is termed as:

A)

holoenzyme

B)

inactive enzyme

C)

competent enzyme

D)

proenzyme

View Answer
104) Which of the following is present on the walls of rough endoplasmic reticulum (RER) ?

A)

DNA

B)

Ribosomes

C)

Lipid body

D)

Peroxisomes

View Answer
105) Enzymes necessary for oxidative phosphorylation occur in :

A)

chloroplast

B)

ribosomes

C)

mitochondria

D)

E.R.

View Answer
106) The egg of Amphioxus is :

A)

mesolecithal

B)

telolecithal

C)

microlecithal

D)

centrolecithal

View Answer
107) A dental disease, characterised by molting of teeth is due to which of the following chemical element in drinking water ?

A)

Mercury

B)

Chlorine

C)

Fluorine

D)

Boron

View Answer
108) Drones in a colony of honey bee originate by :

A)

thelotoky

B)

arrhenotoky

C)

cyclic parthenogenesis

D)

diploid parthenogenesis

View Answer
109) The painful skin condition, called as shingles, is related with :

A)

chicken pox

B)

rabies

C)

polio

D)

AIDS

View Answer
110) Autoimmune thyroiditis is associated with :

A)

Minimata disease

B)

Lion?s disease

C)

Hashimoto?s disease

D)

Grave?s disease

View Answer
111) Transcription takes place in:

A)

matrix

B)

cytoplasm

C)

nucleus

D)

cytosol

View Answer
112) A person may have one gene for normal haemoglobin and one gene for sickle cell haemoglobin, this heterozygous condition is called :

A)

genome

B)

anaemia

C)

sickle cell trait

D)

gene trait

View Answer
113) Thoracic duct in human is related with :

A)

innominate vein

B)

aorta

C)

hepatic artery

D)

portal vein

View Answer
114) Rh factor was first reported by :

A)

Landsteiner and Wiener

B)

Landsteiner and Bernstein

C)

Struli

D)

Von Decastello

View Answer
115) Which of the following is an example of hybrid vigour ?

A)

Mule

B)

Horse

C)

Donkey

D)

Dog

View Answer
116) What is the function of copper-T?

A)

Checks mutation

B)

Checks fertilization

C)

Checks pollination

D)

Checks ovulation

View Answer
117) Bowman?s glands are located in :

A)

cardiac muscles

B)

pleural muscles

C)

olfactory membrane

D)

seminiferous tubules

View Answer
118) A greater trochanter is found in :

A)

ulna

B)

femur

C)

radius

D)

humerus

View Answer
119) Which of the following is essential for DNA synthesis ?

A)

Folic acid

B)

Vitamin-E

C)

Vitamin-K

D)

Vitamin-D

View Answer
120) The example of XY linked gene inheritance is :

A)

xerodermapigmentosa

B)

colour blindness

C)

haemophilia

D)

hypermetropia

View Answer
121) Which of the following will show maximum concentration of DDT ?

A)

Autotrophs

B)

Herbivores

C)

Carnivores

D)

Top carnivores

View Answer
122) Systole refers to the contraction of:

A)

atria and ventricles

B)

SA node

C)

AV node

D)

none of the above

View Answer
123) The toxic effect of CO is due to its affinity with haemoglobin as compared to oxygen, approximately by :

A)

20 times

B)

200 times

C)

500 times

D)

10 times

View Answer
124) Digestion process in human is :

A)

extracelluar

B)

Intracellular

C)

intercelluar

D)

all of these

View Answer
125) The outer most sheath of connective tissue that surrounds a skeletal muscle is :

A)

epimer

B)

epimysium

C)

epimerite

D)

epimere

View Answer
126) Which of the following cytoplasmic granules contain histamine?

A)

Basophils

B)

Acidophils

C)

Neutrophils

D)

Eiosenophils

View Answer
127) Pollutant released by jet planes are :

A)

fog

B)

smog

C)

aerosols

D)

colloides

View Answer
128) A lake with rich nutrients is called :

A)

oligotrophic

B)

eutrophic

C)

trophic

D)

euphotic

View Answer
129) Arytenoid cartilage is found in :

A)

larynx

B)

sternum

C)

hyoid

D)

none of these

View Answer
130) Broca?s area in human brain controls :

A)

movement of tongue

B)

movement of vocal chords

C)

both and

D)

breathing and hiccupping

View Answer
131) Who gave binomial nomenclature ?

A)

Linnaeus

B)

Darwin

C)

Bentham and Hooker

D)

Theophrastus

View Answer
132) Sporogony of malarial parasite occurs in :

A)

stomach wall of mosquito

B)

liver of man

C)

RBCs of man

D)

salivary gland of mosquito

View Answer
133) Comma shaped statge in life cycle of mosquitois :

A)

larval stage

B)

pupal stage

C)

imago stage

D)

defecto stage

View Answer
134) Which of the following controls the peristaltic movement of intestine ?

A)

Sacral plexus

B)

Brachial plexus

C)

Auerbach?s plexus

D)

Cordial plexus

View Answer
135) Botryoidal tissue is present in :

A)

Rabbit

B)

Ascaris

C)

Hirudinaria

D)

Earthworm

View Answer
136) Appropriate term to designate life-cycle of Obelia is :

A)

neoteny

B)

metagenesis

C)

metamorphosis

D)

parthenogenesis

View Answer
137) Mehlis gland in tapeworm is related with :

A)

reproduction

B)

excretion

C)

respiration

D)

circulation

View Answer
138) The hind pair of wings of mosquitoes are represented by :

A)

pulvilli

B)

scutella

C)

halteres

D)

elaters

View Answer
139) Starfish belongs to class :

A)

Asteroidea

B)

Cephalopoda

C)

Pisces

D)

Ophiuroidea

View Answer
140) Fishes have very poor sense organs for:

A)

detectingodours

B)

light perception

C)

sound perception

D)

detecting vibrations in water

View Answer
141) Teeth in frog are :

A)

acrodont

B)

homodont

C)

  polyphyodont

D)

  all of these

View Answer
142) In biotic community primary consumers are :

A)

autotrophs

B)

herbivores

C)

carnivores

D)

decomposers

View Answer
143) 11th July is celebrated as :

A)

World AIDS Day

B)

World Population Day

C)

World Science Day

D)

World Conservation Day

View Answer
144) Most animals domesticated by man belong to order:

A)

Angulata

B)

Rodentia

C)

  Carnivora

D)

  Logomerpha

View Answer
145) a-Helical model of protein is given by :

A)

Pauling and Corey

B)

Robertson

C)

Dixon and Jolly

D)

Watson and Crick

View Answer
146) Linolenic acid is an essential :

A)

fatty acid

B)

carbonic acid

C)

proteno acid

D)

basic acid

View Answer
147) Cellulose is a :

A)

monosaccharide

B)

oligosaccharide

C)

polysaccharide

D)

protein

View Answer
148) Which of the following is genetic material of TMV?

A)

RNA

B)

DNA

C)

RNA and DNA

D)

ss DNA

View Answer
149) Plasmids are used in genetic engineering, these are usually found in :

A)

yeast

B)

bacteria

C)

virus

D)

Chara

View Answer
150) Cell wall of bacteria is made up of :

A)

murein

B)

protein

C)

polysaccharide

D)

lipids

View Answer
151) Which of the following sets of cell organelles contain DNA?

A)

Nucleus, chloroplast, mitochondria

B)

Nucleus, ribosome, lysosome

C)

Chloroplast, mitochondria, ribosome

D)

Nucleus, nucleolus, ribosomes

View Answer
152) The term zymase was coined by:

A)

Buchner

B)

Pasteur

C)

Sumner

D)

Kuhne

View Answer
153) In mitosis, duplication of chromosomes occurs during :

A)

interphase

B)

prophase

C)

metaphase

D)

telophase

View Answer
154) Type of genetic material present in bacteria is :

A)

                DNA

B)

                DNA with histones

C)

                RNA with histones

D)

                RNA without histones

View Answer
155) The presence of coal in an area can be indicated by the study of :

A)

                ecology

B)

                economic botany

C)

                (c ) mining in that area

D)

pollen grain analysis

View Answer
156) 2, 4-D is a :

A)

weedicide

B)

fungicide

C)

priocide

D)

wormicide

View Answer
157) Which of the following is related with nitrogen fixation through non-nodulation ?

A)

                Anthoceros associated with blue green algae

B)

                Coralloid root of Cycas with Anabaena in algal zone

C)

                Roots of Digitaria associated with Spirillum sp.

D)

All of the above

View Answer
158) Potato is cultivated by :

A)

seeds

B)

buds

C)

root cutting

D)

tubers

View Answer
159) During pachytene stage of meiosis, the chromosomes appear :

A)

single stranded

B)

four stranded

C)

six stranded

D)

eight stranded

View Answer
160) Genes are made up of :

A)

hydrocarbons

B)

polynucleosides

C)

polynucleotides

D)

histones

View Answer
161) Exchange of substances between individual cells and their environments taken place by :

A)

osmosis

B)

active transport

C)

diffusion

D)

all of these

View Answer
162) Emasculation of flower bud can be achieved by removal of:

A)

sepals

B)

petals

C)

anthers

D)

stigma

View Answer
163) Cross pollination in crop is called as :

A)

                autogamy

B)

  cleistogamy

C)

                chasmogamy

D)

allogamy

View Answer
164) Which of the following reduces transpiration by inducing closure of stomata ?

A)

                ABA

B)

Ethylene

C)

                Cytokinin

D)

  Gibberellin

View Answer
165) The embryo of sunflower has :

A)

one cotyledon

B)

two cotyledons

C)

many cotyledons

D)

scutelum

View Answer
166) When a hybrid is crossed with a recessive parent, the cross is called as :

A)

dihybrid cross

B)

test cross

C)

back cross

D)

none of these

View Answer
167) Institute of Palaeobotany is situated at:

A)

Lucknow

B)

Delhi

C)

Dehradoon

D)

Kolkata

View Answer
168) Centromere is a part of :

A)

ribosome

B)

lysosome

C)

chromosome

D)

gene

View Answer
169) Pentoses and hexoses are common :

A)

                monosaccharides

B)

                disaccharides

C)

                polysaccharides

D)

                oligosaccharides

View Answer
170) Which of the following shows formation of pseudo mycelium ?

A)

Yeast

B)

Aspergillus

C)

Rhizophora

D)

Chara

View Answer
171) Which of the following produces carrageenin ?

A)

                Red algae

B)

                Brown algae

C)

                Green algae

D)

                Blue green algae

View Answer
172) Palmella stage is observed in :

A)

                Ulothrix

B)

                Spirogyra and Riccia

C)

                Chlamydomonas

D)

Chara and Riccia

View Answer
173) A protective cap covering on developing capsule in moss is called as :

A)

spine

B)

calyptrogen

C)

calyptra

D)

spethe

View Answer
174) The positive evidence of aquatic ancestory of bryophytes is :

A)

                peristomial teeth

B)

                ciliated sperms

C)

                chemotaxis

D)

                gametophytic plant body

View Answer
175) In Selaginella, spores are of :

A)

                two types

B)

                many types

C)

                monotype

D)

                haploid and diploid type

View Answer
176) \[{{K}_{4}}\text{(}2+2\text{)}\]is characteristic feature of family :

A)

                Brassicaceae

B)

                Solanaceae

C)

                Malvaceae

D)

                Papilionaceae

View Answer
177) Sycons fruit develops from which of the following inflorescence ?

A)

                Verticillaster

B)

                Cyathium

C)

                Hypanthodium

D)

                Raceme

View Answer
178) Living beings are made up of cells. This statement belongs to :

A)

                Lamarck

B)

                Von Helmont

C)

                Hugo de Vries

D)

                Schleiden and Schwann

View Answer
179) The main character of plants of family Crucifereae is the presence of:

A)

latex

B)

pectine

C)

alkaloids

D)

myrosin enzyme

View Answer
180) Largest amount of ATP is produced during :

A)

glycolysis

B)

fermentation

C)

Krebs cycle

D)

aerobic respiration

View Answer
181) Taxon is the unit of:

A)

order

B)

species

C)

taxonomy

D)

genus

View Answer
182) Main fruit or fruits of Ranunculaceae is / are :

A)

berry

B)

capsule

C)

achenes

D)

all of these

View Answer
183) In a food wed, each successive trophic level has:

A)

                increased energy

B)

                more content of energy

C)

                less energy

D)

                none of the above

View Answer
184) The pyramid of number in grassland ecosystem is:

A)

linear

B)

inverted

C)

up right

D)

any type

View Answer
185) A septum in Eumycota fungi, bearing a complex pore is called as :

A)

coenocytic

B)

septate hyphae

C)

dolipore septrum

D)

simple pore

View Answer
186) Covered smut of Sorghum is caused by :

A)

                Sphacelotheca sorghii

B)

                Sphacelotheca cruenta

C)

                Sphacelotheca reiliana

D)

                None of the above

View Answer
187) Mycorrhiza acts as :

A)

                root

B)

                mechanical support

C)

                root hairs with an advanced absorption capacity

D)

                an organism

View Answer
188) Pneumatophores are commonly found in :

A)

hydrophytes

B)

xerophytes

C)

mesophytes

D)

mangroves

View Answer
189) Which of the following is the most stable ecosystem ?

A)

Ocean

B)

Pond

C)

Desert

D)

Forest

View Answer
190) The term ecosystem was coined by :

A)

Richter

B)

Odum

C)

Tansley

D)

Lindmann

View Answer
191) Kaziranga biosphere is in :

A)

Assam

B)

Karnataka

C)

W. Bengal

D)

Uttaranchal

View Answer
192) Water pollution:

A)

                decreases turbidity

B)

                increases oxygenation

C)

                increases photosynthesis

D)

                increases turbidity

View Answer
193) Generally, a monocot stem bears vascular bundles

A)

                concentric and closed

B)

                concentric and open

C)

                conjoint and open

D)

                radial and open

View Answer
194) Epidermis and epiblema develops from :

A)

phellogen

B)

periderm

C)

protoderm

D)

calyptrogen

View Answer
195) Which of the following cell is enucleate at maturity ?

A)

Sieve tube

B)

Xylem

C)

Tracheids

D)

Fibre

View Answer
196) Photorespiration is the characteristic of:

A)

\[{{C}_{3}}\]plants

B)

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

C)

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

D)

\[{{C}_{6}}\]plants

View Answer
197) In a food chain, autotrophs are found at:

A)

trophic level 1st

B)

trophic level 2nd

C)

trophic level 3rd

D)

highest trophic level

View Answer
198) Mesosomes are found in :

A)

Yeast

B)

Acetabularia

C)

Bacteria

D)

Chara

View Answer
199) Kesar is obtained from the styles of :

A)

Corchorus

B)

Chrysanthemum

C)

Crochus

D)

none of these

View Answer
200) Which of the following lacks cell wall ?

A)

Gametes

B)

Amoeba

C)

Mycoplasma

D)

All of these

View Answer

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