Solved papers for BHU PMT BHU PMT (Screening) Solved Paper-2010

BHU PMT (Screening) Solved Paper-2010 Total Questions - 200

1) An electron makes transition from\[n=3\]to the orbit \[n=2\]of a hydrogen atom (ionization potential 13.6 eV). The energy of the photon emitted in the process is

A)

1.89 eV

B)

2.55 eV

C)

12.09 eV

D)

12.75 eV

View Answer
2) The moment of inertia of a uniform thin rod of length L and mass M about an axis passing through a point at a distance of \[\frac{L}{3}\]from one of its ends and perpendicular to the rod is

A)

\[\frac{7M{{L}^{2}}}{48}\]

B)

\[\frac{M{{L}^{2}}}{9}\]

C)

\[\frac{M{{L}^{2}}}{12}\]

D)

\[\frac{M{{L}^{2}}}{3}\]

View Answer
3) Two satellites A and B go around a planet P in circular orbits having radii 4R and R respectively. If the speed of the satellite A is 3v, the speed of the satellite B will be

A)

12v

B)

6v

C)

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

D)

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

View Answer
4) A closed vessel contains 8 g of oxygen and 7g of nitrogen. The total pressure is 10 atm at a given temperature. If now oxygen is absorbed by introducing a suitable absorbent the pressure of the remaining gas (in atm) will be

A)

2

B)

10

C)

4

D)

5

View Answer
5) A thin square steel plate with each side equal to 10 cm is heated by a blacksmith. The rate radiated energy by the heated plate is 1134W. The temperature of the hot steel plate is (Stefan's constant\[\sigma =5.67\times {{10}^{-8}}\]\[W\,{{m}^{-2}}{{K}^{-4}},\]emissivity of the plate = 1)

A)

1000 K

B)

1189 K

C)

2000 K

D)

2378 K

View Answer
6) The time period of a simple pendulum of length L as measured in an elevator descending with acceleration\[\frac{g}{3}\]is

A)

\[2\pi \sqrt{\frac{3L}{2g}}\]

B)

\[\pi \sqrt{\frac{3L}{g}}\]

C)

\[2\pi \sqrt{\left( \frac{3L}{g} \right)}\]

D)

\[2\pi \sqrt{\frac{2L}{g}}\]

View Answer
7) A charged particle is free to move in an electric field. It will travel

A)

always along a line of force

B)

along a line of force, if its initial velocity is zero

C)

along a line of force, if it has same initial velocity in the direction of an active angle with the line of force

D)

None of the above

View Answer
8) A charged particle of mass m and charge q is released from rest in uniform electric field E. Neglecting the effect of gravity, the kinetic energy of the charged particle after t second is

A)

\[\frac{E{{q}^{2}}M}{2{{t}^{2}}}\]

B)

\[\frac{2{{E}^{2}}{{t}^{2}}}{mq}\]

C)

\[\frac{{{E}^{2}}{{q}^{2}}{{t}^{2}}}{2m}\]

D)

\[\frac{Eqt}{t}\]

View Answer
9) The capacitance of a parallel plate capacitor with air as medium is\[3\mu F\]. With the introduction of a dielectric medium between the plates, the capacitance becomes\[15\mu F\]. The permittivity of the medium is

A)

\[5{{C}^{2}}{{N}^{-1}}{{m}^{-2}}\]

B)

\[15{{C}^{2}}{{N}^{-1}}{{m}^{-2}}\]

C)

\[0.44\times {{10}^{-10}}{{C}^{2}}{{N}^{-1}}{{m}^{-2}}\]

D)

\[8.845\times {{10}^{-11}}{{C}^{2}}{{N}^{-1}}{{m}^{-2}}\]

View Answer
10) The magnetic moment produced in a substance of 1 g is\[6\times {{10}^{-7}}A-{{m}^{2}}\]. If its density is\[5g/c{{m}^{3}},\]then the intensity of magnetization in A/m will be

A)

\[8.3\times {{10}^{6}}\]

B)

3.0

C)

\[1.2\times {{10}^{-7}}\]

D)

\[3\times {{10}^{-6}}\]

View Answer
11) Mark the wrong statement.

A)

Sliding of molecular layer is much easier than compression or expression

B)

Reciprocal of bulk modulus of elasticity is called compressibility

C)

It is difficult to twist a long rod as compared to small rod

D)

Hollow shaft is much stronger than a solid rod of same mass

View Answer
12) A body moves along a circular path of radius 10m and the coefficient of friction is 0.5. What should be its angular speed in rad/s, if it does not slip from the surface?

A)

5

B)

10

C)

0.1

D)

0.7

View Answer
13) A stone is projected from the ground with velocity 50 m/s at an angle of\[30{}^\circ \]. It crosses a wall after 3 s. How far beyond the wall the stone will strike the ground?\[(g=10\text{ }m/{{s}^{2}})\]

A)

90.2m

B)

89.6m

C)

86.6m

D)

70.2m

View Answer
14) A body of mass M at rest explodes into three pieces, two of which of mass\[\frac{M}{4}\]each are thrown off in perpendicular directions with velocities of 3 m/s and 4 m/s respectively. The third piece will be thrown off with velocity of

A)

1.5 m/s

B)

2.0 m/s

C)

2.5 m/s

D)

3.0 m/s

View Answer
15) Two identical blocks A and B, each of mass m resting on smooth floor are connected by a light spring of natural length L and spring constant k with the spring at its natural length. A third identical block C (mass m) moving with a speed v along the line joining A and B collides with A. The maximum compression in the spring is

A)

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

B)

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

C)

\[\sqrt{\frac{mv}{k}}\]

D)

\[\frac{mv}{2k}\]

View Answer
16) A\[500\mu F\]capacitor is charged at the steady rate of\[100\mu C/s\]. How long will it take to raise the potential difference between the plates of the capacitor to 10 V?

A)

5s

B)

10s

C)

50s

D)

100s

View Answer
17) An\[8\mu F\]capacitor is connected across 220 V, 50 Hz line. What is the peak value of the charge through capacitor?

A)

\[2.5\times {{10}^{-3}}C\]

B)

\[2.5\times {{10}^{-4}}C\]

C)

\[5\times {{10}^{-5}}C\]

D)

\[7.5\times {{10}^{-2}}C\]

View Answer
18) A hydrogen-like atom emits radiations of frequency\[2.7\times {{10}^{15}}Hz\]when it makes a transition from\[n=2\]to\[n=1\]. The frequency emitted in a transition from\[n=3\]to\[n=1\]will be

A)

\[1.8\times {{10}^{15}}Hz\]

B)

\[3.2\times {{10}^{15}}Hz\]

C)

\[4.7\times {{10}^{5}}Hz\]

D)

\[6.9\times {{10}^{15}}Hz\]

View Answer
19) The minimum energy to ionize an atom is the energy required to

A)

add one electron to the atom

B)

excite the atom from its ground state to its first excited state

C)

remove one outermost electron from the atom

D)

remove one innermost electron from the atom

View Answer
20) When 1 cm thick surface is illuminated with light of wavelength X, the stopping potential is V. When the same surface is illuminated by light of wavelength 2X, the stopping potential is V/3. Threshold wavelength for metallic surface is

A)

                                                                                                            \[4\lambda /3\]

B)

                                                                                                               \[4\lambda\]

C)

                                                                                                               \[6\lambda\]

D)

                                                                                                            \[8\lambda /3\]

View Answer
21) The human eye can barely detect a yellow light (6000A) that delivers \[1.7\times {{10}^{-18}}W\] to the retina. Nearly how many photons per second does the retina receive?

A)

50

B)

5

C)

500

D)

More than 5 million

View Answer
22) An object is placed 21 cm in front of a concave mirror of radius of curvature 10cm. A glass slab of thickness 3 cm and                                                                                                                 \[\mu =1.5\] is then placed close to the mirror in the space between the object and the mirror. The position of final image formed is

A)

                                                                                                         \[-3.94\text{ }cm\]

B)

4.3 cm

C)

                                                                                                                 \[-4.93cm\]

D)

3.94cm

View Answer
23) A convex lens of focal length 1.0 m and a concave lens of focal length 0.25 m are 0.75m apart. A parallel beam of light is incident in the convex lens. The beam emerging after refraction from both lenses is

A)

parallel to principal axis

B)

convergent

C)

divergent

D)

None of the above

View Answer
24) The radii of curvature of the two surfaces of a lens are 20 cm and 30 cm and the refractive index of the material of the lens is 1.5. If the lens is concavo-convex, then the focal length of the lens is

A)

24cm

B)

10cm

C)

15cm

D)

120cm

View Answer
25) Two instruments having stretched strings are being played in unison. When the tension in one of the instruments is increased by 1%, 3 beats are produced in 2 s. The initial frequency of vibration of each wire is

A)

600 Hz

B)

300 Hz

C)

200 Hz

D)

150 Hz

View Answer
26) Two conducting spheres of radii                                                                                                                 \[{{R}_{1}}\] and                                                                                                                 \[{{R}_{2}}\] are charged with charges                                                                                                                 \[{{Q}_{1}}\] and                                                                                                                 \[{{Q}_{2}}\] respectively. On bringing them in contact, there is

A)

no change in the energy of the system

B)

an increase in the energy of the system if                                                                                  \[{{Q}_{1}}{{R}_{2}}\ne {{Q}_{2}}{{R}_{1}}\]

C)

always a decrease in the energy of the system

D)

a decrease in the energy of the system if                                                                                    \[{{Q}_{1}}{{R}_{2}}={{Q}_{2}}{{R}_{1}}\]

View Answer
27) An electron moving with the speed                                                                                                        \[5\times {{10}^{6}}\] per sec is shooted parallel to the electric field of intensity                                                                                                   \[1\times 10s\text{ }N/C\] . Field is responsible for the retardation of motion of electron. Now evaluate the distance travelled by the electron before coming to rest for an instant (mass of                                                                                                \[e=9\times {{10}^{-31}}kg,\] charge                                                                                                 \[=1.6\times {{10}^{-19}}C\] )

A)

7 m

B)

0.7 mm

C)

7cm

D)

0.7cm

View Answer
28) A source of sound is travelling at                                                                                                  \[\frac{100}{3}m{{s}^{-1}}\] along a road, towards a point A. When the source is 2 m away from A, a person standing at a point 0 on a road perpendicular of frequency v'. The distance of 0 from A at that time is 4m. If the original frequency is 640 Hz, then the value of v' is (Given that velocity of sound                                                                                                  \[=340\text{ }m{{s}^{-1}}\] )

A)

620 Hz

B)

680 Hz

C)

720 Hz

D)

840 Hz

View Answer
29) The sun delivers                                                                                                  \[104\text{ }W/{{m}^{2}}\] of electromagnetic flux to the earth's surface. The total power that is incident on a roof of dimensions                                                                                           \[(10\times 10)\text{ }{{m}^{2}}\] will be

A)

104 W

B)

105 W

C)

106 W

D)

107 W

View Answer
30) X-rays are not used for radar purposes, because they are not

A)

reflected by target

B)

partly absorbed by target

C)

electromagnetic waves

D)

completely absorbed by target

View Answer
31) A 50 Hz AC current of crest value 1 A flows through the primary coil of a transformer. If mutual induction between primary and secondary is 1.5 H, the crest voltage induced in the secondary coil is

A)

272V

B)

320V

C)

415V

D)

471V

View Answer
32) Find the inductance L of a solenoid of length I whose windings are made of material of density D and resistivity p. The winding resistance is R.

A)

\[\frac{{{\mu }_{0}}}{4\pi l}.\frac{Rm}{\rho D}\]

B)

\[\frac{{{\mu }_{0}}}{4\pi R}.\frac{lm}{\rho D}\]

C)

\[\frac{{{\mu }_{0}}}{4\pi l}.\frac{{{R}^{2}}m}{\rho D}\]

D)

\[\frac{{{\mu }_{0}}}{2\pi R}.\frac{lm}{\rho D}\]

View Answer
33) A toroid is along coil of wire, wound over a circular   core. The coefficient of self-inductance of the toroid is given by (radius = r), when the magnetic field is within it is uniform and\[R>>r\]

A)

\[L=\frac{{{\mu }_{0}}N{{r}^{2}}}{2R}\]

B)

\[L=\frac{{{\mu }_{0}}Nr}{2R}\]

C)

\[L=\frac{{{\mu }_{0}}N{{r}^{2}}}{R}\]

D)

\[L=\frac{{{\mu }_{0}}{{N}^{2}}{{r}^{2}}}{2R}\]

View Answer
34) A galvanometer of resistance\[50\,\Omega \]is connected to a battery of 3 V along with a resistance of\[2950\,\Omega \]in series. A full scale deflection of 30 divisions is obtained in the galvanometer. In order to reduce this deflection to 20 divisions the resistance in series should be

A)

\[4450\,\Omega \]

B)

\[5050\,\Omega \]

C)

\[5550\,\Omega \]

D)

\[6050\,\Omega \]

View Answer
35) A magnet is suspended in such a way that it oscillates in the horizontal plane. It makes 20 oscillations per minute at a plane where dip angle is\[30{}^\circ \]and 15 oscillations per minute at a place where dip angle is\[60{}^\circ \]. The ratio of earth's magnetic fields at two places is

A)

\[3\sqrt{3}:8\]

B)

\[16:9\sqrt{3}\]

C)

\[4:9\]

D)

\[2\sqrt{2}:3\]

View Answer
36) A wire carrying current i and other carrying 2i in the same direction produce a magnetic field B at the midpoint. What will be the field when 2i current is switched off?

A)

B/2

B)

2B

C)

B

D)

4B

View Answer
37) An electric immersion heater of 1.08 kW is immersed in water. After the water has reached a temperature of\[100{}^\circ C,\]how much time will be required to produce 100 g of steam?

A)

50s

B)

420s

C)

105s

D)

210s

View Answer
38) The resistance of the filament of a lamp increases with the increase in temperature. A lamp rated 100 W and 200 V is connected across 220 V power supply. If the voltage drops by 10%, then the power of the lamp will be

A)

90 W

B)

81 W

C)

between 90 and 100W

D)

between 81 and 90W

View Answer
39) A parallel plate air capacitor of capacitance\[{{C}_{0}}\]is connected to a cell of emf V and then disconnected from it. A dielectric slab of dielectric constant K, which can just fill the air gap of the capacitor, is now inserted in it. Which of the following is incorrect?

A)

The potential difference between the plates decreases K times

B)

The energy stored in the capacitor decreases K times

C)

The change in energy\[\frac{1}{2}{{C}_{0}}{{V}^{2}}(K-1)\]

D)

The change in energy\[\frac{1}{2}{{C}_{0}}{{V}^{2}}\left( \frac{1}{K}-1 \right)\]

View Answer
40) A body of mass 6 kg is under a force which causes displacement in it given by\[s=\frac{{{t}^{2}}}{4}m\]where t is time. The work done by the force in 2 sis

A)

12 J

B)

9J

C)

6J

D)

3J

View Answer
41) The Reynolds number of a flow is the ratio of

A)

gravity to viscous force

B)

gravity force to pressure force

C)

inertia force to viscous force

D)

viscous force to pressure force

View Answer
42) The kinetic energy of 1 g molecule of a gas at normal temperature and pressure is\[(R=8.31\text{ }J/mol-K)\]

A)

\[1.3\times {{10}^{2}}J\]

B)

\[2.7\times {{10}^{2}}J\]

C)

\[0.56\times {{10}^{4}}J\]

D)

\[3.4\times {{10}^{3}}J\]

View Answer
43) An ideal gas heat engine operates in Carnot cycle between\[227{}^\circ C\]and\[127{}^\circ C\]. It absorbs \[6\times {{10}^{4}}\]cal of heat at higher temperature. Amount of heat converted to work is

A)

\[2.4\times {{10}^{4}}\text{ }cal\]

B)

\[6\times {{10}^{4}}\text{ }cal\]

C)

\[1.2\times {{10}^{4}}cal\]

D)

\[4.8\times {{10}^{4}}\text{ }cal\]

View Answer
44) A charged particle enters a magnetic field H with its initial velocity making an angle of\[45{}^\circ \] with H. The path of the particle will be

A)

straight line

B)

a circle

C)

an ellipse

D)

a helix

View Answer
45) The dimensional formula for Boltzmann's constant is

A)

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

B)

\[[M{{L}^{2}}{{T}^{-2}}]\]

C)

\[[M{{L}^{o}}{{T}^{-2}}{{\theta }^{-2}}]\]

D)

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

View Answer
46) A particle moves along a straight line OX. At a time t (in second) the distance\[x\](in metre) of the particle from 0 is given by \[x=40+12t-{{t}^{3}}\]. How long would the particle travel before coming to rest?

A)

24m

B)

40m

C)

56m

D)

16m

View Answer
47) The velocity of an electron in the second orbit of sodium atom (atomic number = 11) is v. The velocity of an electron in its fifth orbit will be

A)

\[v\]

B)

\[\frac{22}{5}v\]

C)

\[\frac{5}{2}v\]

D)

\[\frac{2}{5}v\]

View Answer
48) Choose the correct statement.

A)

When we heat a semiconductor its resistance increases

B)

When we heat a semiconductor its resistance decreases

C)

When we cool a semiconductor to 0 K then it becomes superconductor

D)

Resistance of a semiconductor is independent of temperature

View Answer
49) 3.8 days is the half-life period of a sample. After how many days; the sample will become\[\frac{1}{8}\]th of the original substance?

A)

11.4

B)

3.8

C)

3

D)

None of these

View Answer
50) If\[E=at+b{{t}^{2}},\]what is the neutral temperature?

A)

\[-\frac{a}{2b}\]

B)

\[+\frac{a}{2b}\]

C)

\[-\frac{a}{b}\]

D)

\[+\frac{a}{b}\]

View Answer
51) The IUPAC name ofis

A)

3-iso-propylheptane

B)

3-iso-propylpentane

C)

2-methyl-3-propylhexane

D)

4-isoi-propyl heptane

View Answer
52) Which of the following molecules fails to exhibit optical activity?

A)

\[C{{H}_{2}}Cl-CHDBr\]

B)

\[C{{H}_{3}}CHC{{l}_{2}}\]

C)

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

D)

\[C{{H}_{2}}H-CHClC{{H}_{3}}\]

View Answer
53) In the following reaction sequence, X is\[X\xrightarrow{Bro\min ation}Y\xrightarrow{NaN{{O}_{2}}/HCl}\]\[Z\xrightarrow[{{C}_{2}}{{H}_{5}}OH]{Boiling}Tribromobenzene\]

A)

benzoic acid

B)

salicylic acid

C)

phenol

D)

aniline

View Answer
54) \[K{{O}_{2}}+S\xrightarrow{\Delta }(A)\xrightarrow{BaC{{l}_{2}}}\underset{white\text{ }ppt}{\mathop{(B)}}\,\]\[\xrightarrow[\Delta ]{Carbon}(C)\xrightarrow{HCl}\underset{gas}{\mathop{(D)}}\,\]The correct statement is

A)

B is\[BaS{{O}_{4}}\]and D is\[{{H}_{2}}S\]

B)

A is\[BaS\]and D is\[S{{O}_{2}}\]

C)

C is\[BaS\]and D is\[S{{O}_{2}}\]

D)

A is\[{{K}_{2}}S{{O}_{3}}\]and B is\[BaS\]

View Answer
55) In the reaction,\[4HN{{O}_{3}}+{{P}_{4}}{{\text{O}}_{10}}\xrightarrow{{}}4HP{{O}_{3}}+X,\]the product X, is

A)

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

B)

\[{{N}_{2}}{{O}_{3}}\]

C)

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

D)

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

View Answer
56) Nitrolim is a mixture of

A)

\[Ca{{(CN)}_{2}}+graphite\]

B)

\[Ca{{C}_{2}}+graphite\]

C)

\[CaC{{N}_{2}}+graphite\]

D)

\[CaC{{N}_{2}}+{{N}_{2}}\]

View Answer
57) Which of the following aqueous solutions has minimum freezing point?

A)

\[0.01\,m\,NaCl\]

B)

\[0.005{{C}_{2}}{{H}_{5}}OH\]

C)

\[0.005\text{ }m\text{ }Mg{{l}_{2}}\]

D)

\[0.005\text{ }m\text{ }MgS{{O}_{4}}\]

View Answer
58) The STP volume of oxygen liberated by 2 A of current when passed through acidulated water for 3 min and 13 s is

A)

120 cc

B)

22.4 cc

C)

11.2cc

D)

44.8 cc

View Answer
59) \[{{K}_{p}}\]of a reaction at 300 K is 6 atm and 2 atm at 450 K. Which of the statements is incorrect about this reaction, if\[\Delta {{n}_{g}}=1\]?

A)

The reaction is exothermic

B)

The rate of backward reaction increases more than that of forward reaction with increase in temperature

C)

\[{{E}_{a}}\]for the forward reaction is more than that of backward reaction

D)

The difference between heat of reaction at constant pressure and that at constant volume is RT

View Answer
60) In alkaline medium, KMn04 reacts as follows\[2KMn{{O}_{4}}+2KOH\xrightarrow[{}]{{}}2{{K}_{2}}Mn{{O}_{4}}\] \[+{{H}_{2}}O+[O]\] Therefore, the equivalent weight of\[KMn{{O}_{4}}\]will be

A)

31.6

B)

52.7

C)

7.0

D)

158.0

View Answer
61) When\[_{92}{{U}^{235}}\]loses one a-particle, the new element will belong to group

A)

\[IB\]

B)

\[IA\]

C)

\[IIIB\]

D)

\[VB\]

View Answer
62) The correct order of bond angles is

A)

\[NO_{2}^{-}>NO_{2}^{+}>N{{O}_{2}}\]

B)

\[NO_{2}^{+}>NO_{2}^{-}>N{{O}_{2}}\]

C)

\[N{{O}_{2}}>NO_{2}^{+}>NO_{2}^{-}\]

D)

\[NO_{2}^{+}>N{{O}_{2}}>NO_{2}^{-}\]

View Answer
63) Cod liver oil is

A)

fat dispersed in water

B)

water dispersed in fat

C)

water dispersed in oil

D)

fat dispersed in fat

View Answer
64) Cassiterite is concentrated by

A)

levigation

B)

electromagnetic separation

C)

floatation

D)

liquefaction

View Answer
65) The stability of the hydrides follows the order

A)

\[N{{H}_{3}}>P{{H}_{3}}>As{{H}_{3}}>Sb{{H}_{3}}\]

B)

\[N{{N}_{3}}<P{{H}_{3}}<Sb{{H}_{3}}<As{{H}_{3}}\]

C)

\[P{{H}_{3}}>N{{H}_{3}}>As{{H}_{3}}>Sb{{H}_{3}}\]

D)

\[As{{H}_{3}}>N{{H}_{3}}>P{{H}_{3}}>Sb{{H}_{3}}\]

View Answer
66) Catalytic activity of transition metals depends on

A)

their ability to exist in different oxidation states

B)

the size of the metal atoms

C)

the number of empty atomic orbitals available

D)

All of the above are correct

View Answer
67) Which of the following complex species does not involve\[{{d}^{2}}s{{p}^{3}}\]hybridisation?

A)

\[{{[Co{{F}_{6}}]}^{3-}}\]

B)

\[{{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}\]

C)

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

D)

\[{{[Cr{{(N{{H}_{3}})}_{6}}]}^{3+}}\]

View Answer
68) In the complex,\[PtC{{l}_{4}}.3N{{H}_{3}},\]the number of ionisable chlorines is

A)

four

B)

two

C)

one

D)

three

View Answer
69) Which of the following has highest chlorine content?

A)

Pyrene

B)

DDT

C)

Chloral

D)

Gammaxane

View Answer
70) Benzene on oxidation with acidified \[N{{a}_{2}}C{{r}_{2}}{{O}_{7}}\]gives

A)

benzyl alcohol

B)

benzaldehyde

C)

benzoic acid

D)

No reaction occurs

View Answer
71) The correct order of increasing basicity of the following is\[{{H}_{2}}O,O{{H}^{-}},\text{ }C{{H}_{3}}OH,\text{ }C{{H}_{3}}{{O}^{-}}\]

A)

\[C{{H}_{3}}OH<{{H}_{2}}O~<O{{H}^{-}}~<C{{H}_{3}}{{O}^{-}}\]

B)

\[{{H}_{2}}O~<C{{H}_{3}}OH<C{{H}_{3}}{{O}^{-}}<O{{H}^{-}}\]

C)

\[{{H}_{2}}O~<C{{H}_{3}}OH<O{{H}^{-}}<C{{H}_{3}}{{O}^{-}}\]

D)

\[C{{H}_{3}}OH<{{H}_{2}}O~<C{{H}_{3}}{{O}^{-}}<O{{H}^{-}}\]

View Answer
72) \[A\xrightarrow[{{H}_{2}}S{{O}_{4}}]{{{K}_{2}}C{{r}_{2}}{{O}_{7}}}B\xrightarrow[\begin{smallmatrix} Vigorous \\ oxidation \end{smallmatrix}]{[O]}C{{H}_{3}}COOH\]If B in the given sequence is propanone then A is

A)

ethyl alcohol

B)

iso-propyl alcohol

C)

propyl alcohol

D)

tert-pentyl alcohol

View Answer
73) In a Cannizaro reaction, the intermediate that will be best hydride donor is

A)

B)

C)

D)

View Answer
74) Aniline on heating with cone\[HN{{O}_{3}}+\]cone\[{{H}_{2}}S{{O}_{4}}\]mixture yields

A)

o- and p-nitroanilines

B)

m-nitroaniline

C)

a black tarry matter

D)

no reaction

View Answer
75) In which of the following reaction, pressure has no effect on equilibrium?

A)

\[{{N}_{2}}{{O}_{4}}(g)2N{{O}_{2}}(g)\]

B)

\[2S{{O}_{2}}(g)+{{O}_{2}}(g)2S{{O}_{3}}(g)\]

C)

\[C{{O}_{2}}(g)+{{H}_{2}}(g)CO(g)+{{H}_{2}}O(g)\]

D)

\[{{N}_{2}}(g)+3{{H}_{2}}(g)2N{{H}_{3}}(g)\]

View Answer
76) Two moles of HI were heated in a sealed tube at\[440{}^\circ C\]till the equilibrium was reached.\[HI\] was found to be 22% decomposed. The equilibrium constant for dissociation is

A)

0.282

B)

0.0796

C)

0.0199

D)

1.99

View Answer
77) Assertion Most probable velocity is the velocity possessed by maximum fraction of molecules at the same temperature. Reason (R) on collision, more and more molecules acquire higher speed at the same temperature.

A)

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

B)

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

C)

Assertion is true, but Reason is false.

D)

Assertion is false, but Reason is true.

View Answer
78) The first emission line in the atomic spectrum of hydrogen in the Balmer series appears at

A)

\[\frac{9R}{400}c{{m}^{-1}}\]

B)

\[\frac{7R}{144}c{{m}^{-1}}\]

C)

\[\frac{3R}{4}c{{m}^{-1}}\]

D)

\[\frac{5R}{36}c{{m}^{-1}}\]

View Answer
79) If for\[{{H}_{2}}(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow{{}}{{H}_{2}}O(g),\]\[\Delta {{H}_{1}}\]is the enthalpy of reaction and fo\[{{H}_{2}}(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow[{}]{{}}{{H}_{2}}O(l)\]\[\Delta {{H}_{2}}\]is enthalpy of reaction, then

A)

\[\Delta {{H}_{1}}>\Delta {{H}_{2}}\]

B)

\[\Delta {{H}_{1}}=\Delta {{H}_{2}}\]

C)

\[\Delta {{H}_{1}}<\Delta {{H}_{2}}\]

D)

\[\Delta {{H}_{1}}+\Delta {{H}_{2}}=0\]

View Answer
80) A sodium cation has a different number of electrons from

A)

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

B)

\[{{F}^{-}}\]

C)

\[L{{i}^{+}}\]

D)

\[A{{l}^{3+}}\]

View Answer
81) Oxidation of thiosulphate ion by iodine gives

A)

\[SO_{3}^{2-}\]

B)

\[SO_{4}^{2-}\]

C)

\[{{S}_{4}}O_{6}^{2-}\]

D)

\[{{S}_{2}}O_{5}^{2-}\]

View Answer
82) Which of the following bonds has the lusher energy?

A)

\[SeSe\]

B)

\[TeTe\]

C)

\[SS\]

D)

\[OO\]

View Answer
83) Number of \[\pi -\] electrons in cyclobutadienyl anlon\[{{({{C}_{4}}{{H}_{4}})}^{2-}}\]is

A)

2

B)

4

C)

6

D)

8

View Answer
84) Cetane number of diesel fuel will increase with the addition of

A)

n-decane

B)

n-hexadecane

C)

n-hexane

D)

a-methyihaphthalene

View Answer
85) lodoform can be obtained on warming\[NaOH\] and iodine with

A)

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

B)

\[{{(C{{H}_{3}})}_{2}}CH\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,{{C}_{2}}{{H}_{5}}\]

C)

\[C{{H}_{3}}-\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\mathop{C}}\,-OC{{H}_{3}}\]

D)

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

View Answer
86) Which is an example of thermosetting polymer?

A)

Polythene

B)

PVC

C)

Neoprene

D)

Bakelite

View Answer
87) Analysis shows that nickel oxide has the formula\[N{{i}_{0.98}}O\]. What fraction of the nickel exists as\[N{{i}^{3+}}\]ions?

A)

1 %

B)

2 %

C)

4%

D)

8%

View Answer
88) The molecule/ion which has pyramidal shape   is:

A)

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

B)

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

C)

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

D)

\[NO_{3}^{-}\]

View Answer
89) By Pajan's rule covalent character increases with increase in size of the anion. Identify the correct order of melting point of calcium.

A)

\[Ca{{F}_{2}}<CaC{{l}_{2}}<CaB{{r}_{2}}<Ca{{I}_{2}}\]

B)

\[CaC{{l}_{2}}<Ca{{F}_{2}}<CaB{{r}_{2}}<Ca{{I}_{2}}\]

C)

\[Ca{{F}_{2}}>CaC{{l}_{2}}>CaB{{r}_{2}}>Ca{{I}_{2}}\]

D)

\[CaC{{l}_{2}}>Ca{{F}_{2}}>CaB{{r}_{2}}>Ca{{I}_{2}}\]

View Answer
90) Considering\[NO,\text{ }N{{O}^{+}}\]and\[N{{O}^{-}}\]we say that

A)

among the three, the one isoelectronic with\[{{N}_{2}}\]alone is diamagnetic

B)

among the three, the one isoelectronic with\[{{O}_{2}}\]alone is paramagnetic

C)

all the three species are paramagnetic

D)

the three overlaps are stronger than\[{{N}_{2}}\]or \[{{O}_{2}}\]

View Answer

91) For a reaction\[A+2B\xrightarrow{{}}C+D\]the following data were obtain:

Expt. Initial concentration \[(mol\,{{L}^{-1}})\]			Initial rate of formation of D \[(mol\,{{L}^{-1}}{{\min }^{-1}})\]
	[A]	[B]
1.	0.1	0.1	\[6.0\times {{10}^{-3}}\]
2.	0.3	0.2	\[7.2\times {{10}^{-2}}\]
3.	0.3	0.1	\[2.88\times {{10}^{-1}}\]
4.	0.4	0.1	\[2.4\times {{10}^{-2}}\]

The correct rate law expression will be

\[Rate=k[A][B]\]

\[Rate=k[A]{{[B]}^{2}}\]

\[Rate=k{{[A]}^{2}}{{[B]}^{2}}\]

\[Rate=k{{[A]}^{2}}[B]\]

View Answer

92) The standard reduction potential of three metals\[X,Y\]and \[Z\]are 0.52, -3.03 and -1.18V respectively. The order or reducing power of the corresponding metals is

A)

\[Y>Z>X\]

B)

\[X>Y>Z\]

C)

\[Z>Y>X\]

D)

\[Z>X>Y\]

View Answer
93) Which of the following is not a redox rection?

A)

\[CaC{{O}_{3}}\xrightarrow{{}}CaO+C{{O}_{2}}\]

B)

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

C)

\[Na+{{H}_{2}}O\xrightarrow[{}]{{}}NaOH+\frac{1}{2}{{H}_{2}}\]

D)

\[MnC{{l}_{3}}\xrightarrow{{}}MnC{{l}_{2}}+\frac{1}{2}C{{l}_{2}}\]

View Answer
94) In which of the following pair, the EAN of central metal atom is not same?

A)

\[{{[Fe{{F}_{6}}]}^{3-}}\]and\[{{[Fe{{(CN)}_{6}}]}^{3-}}\]

B)

\[{{[Cr{{(N{{H}_{3}})}_{6}}]}^{3+}}\]and\[{{[Cr{{(CN)}_{6}}]}^{3-}}\]

C)

\[{{[Fe{{(CN)}_{6}}]}^{3-}}\]and\[{{[Fe{{(CN)}_{6}}]}^{4-}}\]

D)

\[Ni{{(CO)}_{4}}\]and\[{{[Fe{{(CN)}_{6}}]}^{4-}}\]

View Answer
95) Which ammo acid has no asymmetric carbon atom?

A)

Histidine

B)

Glycine

C)

\[\alpha -\]alanine

D)

Threonin

View Answer
96) An organic compound with the formula\[{{C}_{6}}{{H}_{12}}{{O}_{6}}\]forms a yellow crystalline solid with phenylhydrazine and gives a mixture of sorbitol and mannitol when reduced with sodium. Which among the following could be the compound?

A)

Fructose

B)

Glucose

C)

Mannose

D)

Sucrose

View Answer
97) Identify the incorrect statement.

A)

The oxidation of iodide ions by ozone can be used as a method to estimate ozone

B)

Bromine does not liberate nitrogen gas from ammonia like chlorine

C)

With hot concentrated alkali, chlorine produces the chloride and chlorate

D)

Only fluorine attacks\[Si{{O}_{2}}\]to give\[Si{{F}_{3}}\]

View Answer
98) The maximum number of electrons in all those orbitals for which principal quantum number is 3 and azimuthal quantum number 2, is

A)

2

B)

8

C)

10

D)

18

View Answer
99) The weight of hypo\[(N{{a}_{2}}{{S}_{2}}{{O}_{3}}.5{{H}_{2}}O)\]required to make\[100\text{ }c{{m}^{3}}\]of 0.2 N solution for use in the reaction \[2{{S}_{2}}O_{3}^{2-}+{{I}_{2}}\xrightarrow{{}}{{S}_{4}}O_{6}^{2-}+2{{I}^{-}}\]will be

A)

1.49 g

B)

2.98 g

C)

4.96 g

D)

8.94 g

View Answer
100) Which of the following will not show aromatic behaviour?

A)

B)

C)

D)

View Answer
101) Given below are four methods (A-D) and their modes of action (1-4) in achieving contraception. Select their correct matching from the four options that follow.

Method Mode of Action

A. The pill 1. Prevents sperms Reaching cervix

B. Condom 2. Prevents

C. Vasectomy 3. Prevents ovulation

D. Copper-T 4. Semen contains no sperms

A)

                A-3         B-1         C-4         D-2

B)

                A-4         B-1         C-2         D-3

C)

                A-3         B-4         C-1         D-2

D)

                A-2         B-3         C-1         D-4

View Answer
102) Polysome is formed by

A)

several ribosomes attached to a single mRNA

B)

many ribosomes attached to a strand of endoplasmic reticulum

C)

a ribosome with several subunits

D)

ribosomes attached to each other in a linear arrangement

View Answer
103) What is vital capacity of our lungs?

A)

Inspiiatory reserve volume plus tidal volume

B)

Total lung capacity minus expiratory reserve volume

C)

Inspiratory reserve volume plus expiratory reserve volume

D)

Total lung capacity minus residual volume

View Answer
104) Which one of the following is the true description about an animal concerned?

A)

Earthworm ? The alimentary canal consists of a sequence of pharynx, oesophagus, stomach, gizzard and intestine

B)

Frog ? Body divisible into three regions-head, neck and trunk

C)

Rat? Left kidney is slightly higher in position than the right one

D)

Cockroach ? 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen)

View Answer
105) Haploids are more suitable for mutation studies than the diploids. This is because

A)

haploids are reproducrively more stable than diploids

B)

mutagenes penetrate in haploids more effectively than in diploids

C)

haploids are more abundant in nature than diploids

D)

all mutations, whether dominant or recessive are expressed in haploids

View Answer
106) Which one of the following is the correct statement regarding the particular psychotropic drug specified?

A)

Hashish causes alter thought perceptions and hallucinations

B)

Opium stimulates nervous system and causes hallucinations

C)

Morphine leads to delusions and disturbed emotions

D)

Barbiturates cause relaxation and temporary euphoria

View Answer
107) What does the fill form apparatus do at the entrance into ovule?

A)

It helps in the entry of pollen tube into a synergid

B)

It prevents entry of more than one pollen tube into the embryo sac

C)

It brings about opening of the pollen rube

D)

It guides pollen tube from a synergid to egg

View Answer
108) According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometres) of the air pollutants is responsible for greatest harm to human health?

A)

2.5 or less

B)

1.5 or less

C)

1.0 or less

D)

5.2 or 2.5

View Answer
109) During the propagation of a nerve impute, the action potential results from die movement of

A)

\[{{K}^{+}}\]ions from extracellular fluid to intracellular fluid

B)

\[N{{a}^{+}}\]ions from intracellular fluid to extracellular fluid

C)

\[{{K}^{+}}\] ions from intracellular fluid to extracellular fluid

D)

\[N{{a}^{+}}\] ions from extracellular fluid to intracellular fluid

View Answer
110) In germinating seeds, fatty acids are degraded exclusively in the

A)

proplastids

B)

glyoxysomes

C)

peroxisomes

D)

mitochondria

View Answer
111) The most active phagocytic white blood cells are

A)

neutrophils and eosinophils

B)

lymphocytes and macrophages

C)

eosinophils and lymphocytes

D)

neutrophils and monocytes

View Answer
112) In humans, blood passes from the post caval to the diastolic right atrium of heart due to

A)

pushing open of the venous valves s

B)

suction pull

C)

stimulation of the sino auricular node

D)

pressure difference between the cava and atrium

View Answer
113) Which one of the following item gives its correct total number?

A)

Floating ribs in humans                 -4

B)

Amino acids found in proteins ? 16

C)

Types of diabetes                           - 3

D)

Cervical vertebrae in humans    - 8

View Answer
114) Vacuole in a plant cell

A)

is membrane-bound and contains storey proteins and lipids

B)

is membrane-bound and contains water and excretory substances

C)

lacks membrane and contains air

D)

lacks membrane and contains water and excretory substances

View Answer
115) Which one of the following is resistant to enzyme action?

A)

Cork

B)

Wood fibre

C)

Pollen exine

D)

Leaf cuticle

View Answer
116) Which one of the following is not a characteristic of phylum-Annelid a?

A)

Closed circulatory system

B)

Segmentation

C)

Pseudocoelom

D)

Ventral nerve cord

View Answer
117) What is antisense technology?

A)

A cell displaying a foreign antigen used for synthesis of antigens

B)

Production of somaclonal variants in tissue cultures

C)

When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene

D)

RNA polymerase producing DNA

View Answer
118) Importance of day length in flowering of plants was first shown in

A)

Lemna

B)

tobacco

C)

cotton

D)

Petunia

View Answer
119) The two subunits of ribosome remain united at a critical ion level of

A)

copper

B)

manganese

C)

magnesium

D)

calcium

View Answer
120) The energy-releasing process in which the substrate is oxidised without an external electron acceptor is called

A)

fermentation

B)

photorespiration

C)

aerobic respiration

D)

glycolysis

View Answer
121) Cornea transplant in humans is almost never rejected. This is because

A)

its cells are least penetrable by bacteria

B)

it has no blood supply

C)

it is composed of enucleated cells

D)

it is a non-living layer

View Answer
122) \[\text{Cry-I}\] endotoxins obtained from Bacillus thuringiensis are effective against

A)

mosquitoes

B)

flies

C)

nematodes

D)

boll worms

View Answer
123) In which one of the following, the male and female gamerophytes don't have free-living independent existence?

A)

Pteris

B)

Funaria

C)

Polytrichum

D)

Cedrus

View Answer
124) In human adult females, oxytocin

A)

is secreted by anterior pituitary

B)

stimulates growth of mammary glands

C)

stimulates pituitary to secrete vasopressin

D)

causes strong uterine contractions during parturition

View Answer
125) Main objective of production/use of herbicide resistant GM crops is to

A)

eliminate weeds from the field without the use of manual labour

B)

eliminate weeds from the field without the use of herbicides

C)

encourage eco-friendly herbicides

D)

reduce herbicide accumulation in food particles for health safety

View Answer
126) A competitive inhibitor of succinic dehydrogenase is

A)

malonate

B)

oxaloacetate

C)

\[\text{ }\!\!\alpha\!\!\text{ -}\]ketoglutarate

D)

malate

View Answer
127) Which one of the following pair of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it?

A)

Thymine, Uracil - Pyrimidines

B)

Uracil, Cytosine - Pyrimidines

C)

Guanine, Adenine ? Purines

D)

Adenine, Thymine- Purines

View Answer
128) Human insulin is being commercially produced from a transgenic species of

A)

Escherichia

B)

Mycobacterium

C)

Rhizobium

D)

Saccharomyces

View Answer
129) Bacterial leaf blight of rice is caused by a species of

A)

Xanthomonas

B)

Pseudomonas

C)

Altemaria

D)

Erwima

View Answer
130) In humans, at the end of the first meiotic division, the male germ cells differentiate into the

A)

primary spermatocytes

B)

secondary spermatocytes

C)

spermatids

D)

spermatogonia

View Answer
131) Electrons from excited chlorophyll molecule of photosystem-\[\text{II}\] are accepted first by

A)

cytochrome-\[b\]

B)

cytochrome-\[f\]

C)

quinone

D)

ferredoxin

View Answer
132) To which type of barriers under innate immunity, do the saliva in the mouth and the tears from the eyes, belong?

A)

Cytokine barriers

B)

Cellular barriers

C)

Physiological barriers

D)

Physical barriers

View Answer
133) Cellulose is the major component of cell walls of

A)

Pythium

B)

Xanthomonas

C)

Pseudomonas

D)

Saccharomyces

View Answer
134) The slow rate of decomposition of fallen logs in nature is due to their

A)

low moisture content

B)

poor nitrogen content

C)

anaerobic environment around them

D)

low cellulose content

View Answer
135) In leaves of \[{{\text{C}}_{\text{4}}}\text{-}\]plants malic acid synthesis during \[\text{C}{{\text{O}}_{\text{2}}}\text{-}\]fixation occurs in

A)

epidermal cells

B)

mesophyll cells

C)

bundle sheath

D)

guard cells

View Answer
136) Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to

A)

coelomic fluid

B)

blood

C)

gut peristalsis

D)

setae

View Answer
137) Which one of the following pairs of organs includes only the endocrine glands?

A)

Parathyroid and adrenal

B)

Pancreas and parathyroid

C)

Thymus and testes

D)

Adrenal and ovary

View Answer
138) Replum is present in the ovary of flower of

A)

lemon

B)

mustard

C)

sunflower

D)

pea

View Answer
139) Darwin's finches are an excellent example of

A)

adaptive radiation

B)

seasonal migration

C)

brood parasitism

D)

connecting links

View Answer
140) Endosperm is consumed by developing embryo n the seed of

A)

coconut

B)

castor

C)

pea

D)

maize

View Answer
141) Dry indehiscent single-seeded fruit formed from bicarpellary syncarpous inferior ovary is

A)

caryopsis

B)

cypsela

C)

berry

D)

cremocarp

View Answer
142) Nitrogen-fixation in root nodules of Alnus is brought about by

A)

Bradyrhizobium

B)

Clostridium

C)

Frankia

D)

Azorhizobium

View Answer
143) Which one of the following is heterosporous?

A)

Dryopetris

B)

Salvinia

C)

Adiantum

D)

Equisetum

View Answer
144) The \[{{\text{C}}_{\text{4}}}\text{-}\]plants are photosynthetically more efficient than \[{{\text{C}}_{3}}\text{-}\]plants because

A)

the \[C{{O}_{2}}\]compensation point is more

B)

\[C{{O}_{2}}\]generated during photorespiralion is trapped and recycled through PEP carboxylase

C)

the \[C{{O}_{2}}\]efflux is not prevented

D)

they have more chloroplasts

View Answer
145) Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide?

A)

Bacterial leaf blight of rice

B)

Downy mildew of grapes

C)

Loose smut of wheat

D)

Black rust of wheat

View Answer
146) Consider the following four measures (A-D) that could be taken to successfully grow dud pea in an area where bacterial blight disease is common. A Spary with Bordeaux mixture. B Control of the insect vector of the disease pathogen. C Use of only disease-free seeds. D Use of varieties resistant to the disease. Which two of the above measures can control the disease?

A)

B and C

B)

A and B

C)

C and D

D)

A and D

View Answer
147) The haemoglobin of a human foetus

A)

has a lower affinity for oxygen than that of the adult

B)

its affinity for oxygen is the same as that of an adult

C)

has only two protein subunits instead of four

D)

has a higher affinity for oxygen than that of an adult

View Answer
148) The rupture and fracdonation do not usually occur in the water column in vessel/tracheids during the ascent of sap becasue of

A)

lignified thick walls

B)

cohesion and adhesion

C)

weak gravitational pull

D)

transpiration pull

View Answer
149) Vascular tissues in flowering plants develop from

A)

phellogen

B)

plerome

C)

periblem

D)

dermatogens

View Answer
150) Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin?

A)

Neutrophils

B)

Basophils

C)

Eosinophus

D)

Monocytes

View Answer
151) The fleshy receptacle of syconous of fig encloses a number of

A)

achenes

B)

samaras

C)

berries

D)

mericarps

View Answer
152) Which extra embryonic membrane in humans prevents desiccation of the embryo inside the    uterus?

A)

Chorion

B)

Allanlois

C)

Yolk sac

D)

Amnion

View Answer
153) Modern detergents contain enzyme preparations of

A)

acidophiles

B)

alkaliphiles

C)

the rmoacidophiles

D)

the rmophiles

View Answer
154) The linking of antibiotic resistance gene with the plasmid vector became possible with

A)

DNA ligase

B)

endonucleases

C)

DNA polymerase

D)

exonucleases

View Answer
155) The fruit is chambered, developed from inferior ovary and has seeds with succulent testa in

A)

pomegranate

B)

orange

C)

guava

D)

cucumber

View Answer
156) The centromere or primary constriction of the chromosome contains rings of proteins that are intimately associated with a spindle fibre. These rings are called

A)

centrioles

B)

secondary constriction

C)

asters

D)

kinetochores

View Answer
157) Which of the following is correct order of the evolutionary history of man?

A)

Peking man. Homo sapiens. Neanderthal man, Cro-Magnon man

B)

Peking man, Neanderthal man, Homo sapiens, Cro-Magnon man

C)

Peking man, Hedelberg man, Neanderthal man, Cro-Magnon man

D)

Peking man. Neanderthal man, Homo sapiens, Hedelberg man

View Answer
158) First life on earth was

A)

cyanobacteria

B)

chemoheterotrophs

C)

autotrophs

D)

photoautotrophs

View Answer
159) In negative operon

A)

co-repressor binds with repressor

B)

co-repressor does not bind with represser

C)

co-repressor binds with inducer

D)

c-AMP hs negative effect on lac operon

View Answer
160) Similarities in organisms with different genotypes indicates

A)

microevolution

B)

macroevolution

C)

convergent evolution

D)

divergent evolution

View Answer
161) Sickle cell anaemia is due to

A)

change of amino acid in \[\text{ }\!\!\alpha\!\!\text{ -}\]chain of haemoglobin

B)

change of amino add in \[\text{ }\!\!\beta\!\!\text{ -}\]chain of haemoglobin

C)

change of amino acid in both \[\text{ }\!\!\alpha\!\!\text{ -}\] and \[\text{ }\!\!\beta\!\!\text{ -}\] chains of haemoglobin

D)

change of amino acid in either \[\text{ }\!\!\alpha\!\!\text{ -}\] or \[\text{ }\!\!\beta\!\!\text{ -}\] chain of haemoglobin

View Answer
162) Reason of diversity in living beings is

A)

mutation

B)

long term evolutionary change

C)

gradual change

D)

short term evolutionary change

View Answer
163) Which of the following metal pollution causes sterility in human beings?

A)

Mercury

B)

Arsenic

C)

Manganese

D)

Chromium

View Answer
164) Which of the following is closest relative of man?

A)

Chimpanzee

B)

Gorilla

C)

Orangutan

D)

Gibbon

View Answer
165) In his experiment, Mendel obtained wrinkled pea. The wrinkling was due to deposition of sugar instead of starch. This happened due to the enzyme

A)

amylase

B)

invertase

C)

diastase

D)

absence of starch-branching enzyme

View Answer
166) Which of these do not follow independent assortment?

A)

Genes on non-homologous chromosomes and absence of linkage

B)

Genes on homologous chromosomes

C)

Linkage genes on same chromosomes

D)

Unlinked genes on same chromosome

View Answer
167) A mutant strain of T4-bacteriophage \[\text{R-II,}\] fails to lyse the E.coli but when two strains \[\text{R-I}{{\text{I}}^{\text{X}}}\] and \[\text{R-I}{{\text{I}}^{y}}\] are mixed then they lyse the E.coli. What may be the possible reason?

A)

Bacteriophage transforms in wild

B)

It is not mutated

C)

Both strains have similar cistrons

D)

Both strains have different cistrons

View Answer
168) At the time of organogenesis, genes regulate the process at different levels and at different time due to

A)

promoter

B)

regulator

C)

intron

D)

exon

View Answer
169) Heavy rainfall during summer produces

A)

desert

B)

grassland

C)

forest

D)

wetland

View Answer
170) Which of the following are less general in characters as compared to genus?

A)

Species

B)

Division

C)

Class

D)

Family

View Answer
171) Element necessary for the middle lamella is

A)

Calcium

B)

Zinc

C)

Potassium

D)

Copper

View Answer
172) Extranuclear chromosomes occcur in

A)

peroxisome and ribosome

B)

chloroplast and mitochondria

C)

mitochondria and ribosome

D)

chloroplast and lysosome

View Answer
173) Spoilage of oil can be detected by which fatty acid?

A)

Oleic acid

B)

Linolenic acid

C)

Linoleic acid

D)

Erusic acid

View Answer
174) What is true for archaebacteria?

A)

All are halophilic

B)

All are photosynthetic

C)

All are fossils

D)

These are oldest living beings

View Answer
175) Which one of the following is correct match?

A)

Reserpine          - Tranquiliser

B)

Cocaine               - Opiatic narcotic

C)

  Morphine          - Hallucinogenic

D)

Bhang                  - Analgesic

View Answer
176) Which fish selectively feeds on the larva at mosquito?

A)

Gambusia

B)

Rohu

C)

Clarias

D)

Exocoetus

View Answer
177) Forthcoming generations are less adapting than their parental generation due to

A)

natural selection

B)

mutation

C)

genetic drift

D)

adaptation

View Answer
178) Due to discovery of which of the following id 1980s, the evolution was termed as RNA world?

A)

mRNA, tRNA, rRNA synthesise protein

B)

In some viruses, RNA is genetic material

C)

Some RNAs have enzymatic property

D)

RNA is not found in all cells

View Answer
179) A and B genes are linked. What shall be the genotype of progeny in a cross between AB/ab and ab/ab?

A)

AAbb and aabb

B)

AaBb and aabb

C)

AABB and aabb

D)

  None of these

View Answer
180) When dominant and recessive alleles express together, it is called

A)

codominance

B)

dominance

C)

amphidominance

D)

pseudodominance

View Answer
181) Maximum number of bases in plasmid discovered so far is

A)

50 kilobase

B)

500 kilobase

C)

5,000 kilobase

D)

5 kilobase

View Answer
182) Half life period of \[{{C}^{14}}\]is

A)

500 years

B)

5,000 years

C)

50 years

D)

\[5\times {{10}^{14}}\]years

View Answer
183) The end product of Ornithine cycle is

A)

urea

B)

uric acid

C)

ammonia

D)

carbon dioxide

View Answer
184) Which one is correctly matched?

A)

Vitamin-E           - Tocopherol

B)

Vitamin-D           - Riboflavin

C)

Vitamin-B           - Calciferol

D)

Vitamin-A           - Thiamine

View Answer
185) In Hydra, waste material of food digestion and nitrogenous waste material are removed from

A)

mouth and mouth

B)

body wall and body wall

C)

mouth and body wall

D)

mouth and tentacles

View Answer
186) Which of the following chamber of heart has the thickest muscular wall?

A)

Left auricle

B)

Left ventricle

C)

Right ventricle

D)

Right auricle

View Answer
187) Which gland plays key role in metamorphosis of frog?

A)

Adrenal

B)

Thyroid

C)

Thymus

D)

Pancreas                 Thyroid gland secretes thyroxine hormone. It initiates, regulates and plays an important role in metamorphosis of frog.

View Answer
188) Restriction endonucleases are used as

A)

molecular bluid up at nucleotides

B)

molecular degradation to DNA breakup

C)

molecular knives for cutting DNA at specific sites

D)

molecular cement to combine DNA sites

View Answer
189) A plant cell has potential to develop into a full plant. This is called

A)

totipolency

B)

gene cloning

C)

tissue culture

D)

regeneration

View Answer
190) Linnaeus system of classification is

A)

natural

B)

artificial

C)

phylogenetic

D)

progressive

View Answer
191) Number of Ban- bodies in XXXX female

A)

one

B)

two

C)

three

D)

four

View Answer
192) Who coined the term zymase?

A)

Pasteur

B)

Buchner

C)

Kuhne

D)

Sumner

View Answer
193) Which is the example of conditioned reflex?

A)

Eye closed when anything enter into it

B)

Hand took up when piercing with needle

C)

Your kneeing took up a stone then dog runs away

D)

Digestion food goes forward in alimentary canal

View Answer
194) The spice saffron is obtained from which one of the following?

A)

Corolla

B)

Stamen

C)

Stigma

D)

Tender tip of leaf

View Answer
195) The coconut water is a part of

A)

nucellus

B)

pericarp

C)

embryo

D)

endosperm

View Answer
196) Turmeric has recently become widely popular asa

A)

condiment

B)

source of insecticides

C)

source of antibiotics

D)

source of pigments

View Answer
197) A community of organisms interacting with abiotic environmental factors constitutes

A)

a niche

B)

a biogeochemical cycle

C)

an ecosystem

D)

a food chain

View Answer
198) The food chain in which microbes breakdown energy rich compounds synthesised by producers is called

A)

ecosystem

B)

parasitic food chain

C)

detritus level chain

D)

predator food chain

View Answer
199) The function of renin is

A)

vasodilation

B)

reduce blood pressure

C)

degradation of angiotensinogen

D)

None of the above

View Answer
200) Heart beat increases at the time of interview because

A)

hypersecretion of renin

B)

hyposecretion of renin

C)

secretion of adrenaline

D)

direlic hormone

View Answer

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Solved papers for BHU PMT BHU PMT (Screening) Solved Paper-2010

done BHU PMT (Screening) Solved Paper-2010 Total Questions - 200

Study Package

BHU PMT (Screening) Solved Paper-2010 Total Questions - 200