Solved papers for BHU PMT BHU PMT (Screening) Solved Paper-2008

BHU PMT (Screening) Solved Paper-2008 Total Questions - 200

1) An electric fan is placed on a stationary boat and air is blown with it on the sail of the boat. Which of the following statements is correct?

A)

The boat will be uniformly accelerated in the direction of the flow of the air

B)

The boat will start moving with uniform speed

C)

The boat will be uniformly accelerated opposite to the direction of flow of air

D)

The boat will remain stationary as before

View Answer
2) When the bob of a simple pendulum swings, the work done by tension in the string is

A)

\[>0\]

B)

\[<0\]

C)

zero

D)

maximum

View Answer
3) If P represents radiation pressure, c represents speed of light and Q represents radiation energy striking a unit area per second then non-zero integers\[x,\text{ }y\]and z such that\[{{P}^{x}}{{Q}^{y}}{{c}^{z}}\]is dimensionless, are

A)

\[x=1,y=1,z=-1\]

B)

\[x=1,y=-1,z=1\]

C)

\[x=-1,y=1,z=1\]

D)

\[x=1,y=1,z=1\]

View Answer
4) The potential energy U between two atoms in a diatomic molecule as a function of the distance\[x\]between atoms has been shown in the adjoining figure. The atoms are

A)

attracted when\[x\]lies between A and B and are repelled when\[x\]lies between B and C

B)

attracted when\[x\]lies between B and C and are repelled when\[x\]lies between A and B

C)

attracted when they reach B

D)

repelled when they reach B

View Answer
5) For a particle executing simple harmonic motion, the kinetic energy K is given by, \[K={{K}_{0}}{{\cos }^{2}}\omega t.\]The maximum value of potential energy is

A)

\[{{K}_{0}}\]

B)

zero

C)

\[{{K}_{0}}/2\]

D)

not obtainable

View Answer
6) The speed of sound in hydrogen at NTP is 1270 m/s. Then, the speed in a mixture of hydrogen and oxygen in the ratio 41 by volume will be

A)

317 m/s

B)

635 m/s

C)

830 m/s

D)

950 m/s

View Answer
7) A water drop is divided into 8 equal droplets. The pressure difference between the inner and outer side of the big drop will be

A)

same as for smaller droplet

B)

\[\frac{1}{2}\]of that for smaller droplet

C)

\[\frac{1}{4}\]of that for smaller droplet

D)

twice that for smaller droplet

View Answer
8) A train of 150 m length is going towards north direction at a speed of\[10\text{ }m{{s}^{-1}}\]. A parrot flies at a speed of\[5\text{ }m{{s}^{-1}}\]towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to

A)

12s

B)

8s

C)

15s

D)

10s

View Answer
9) Two vessels A and B having equal volume contain equal masses of hydrogen in A and helium in B at 300 K. Then, mark the correct statement.

A)

The pressure exerted by hydrogen is half that exerted by helium

B)

The pressure exerted by hydrogen is equal to that exerted by helium

C)

Average KE of the molecule of hydrogen is half the average KE of the molecules of helium

D)

The pressure exerted by hydrogen is twice that exerted by helium

View Answer
10) A charge Q is uniformly distributed over a large square plate of copper. The electric field at a point very close to the centre of the plate is 10 V/m. If the copper plate is replaced by a plastic plate of the same geometrical dimensions and carrying the same charge Q uniformly distributed, then the electric field at the point P will be

A)

5 V/m

B)

zero

C)

10 V/m

D)

20 V/m

View Answer
11) A piece of wire of resistance R is cut into n equal parts. These parts are then connected in parallel. If the equivalent resistance of the parallel combination is\[R',\], then (R/R) is

A)

1/1

B)

\[n/1\]

C)

\[{{n}^{2}}/1\]

D)

\[1/n\]

View Answer
12) Ice starts freezing in a lake with water at\[0{}^\circ C\]when the atmospheric temperature is\[-10{}^\circ C\]. If the time taken for 1 cm of ice to be formed is 12 min; the time taken for the thickness of the ice to change from 1 cm to 2 cm will be

A)

12 min

B)

less than 12 min

C)

more than 12 min but less than 24 min

D)

more than 24 min

View Answer
13) An ideal gas is taken through a cyclic thermo dynamical process through four steps. The amounts of heat involved in these steps are \[{{Q}_{1}}=5960\text{ }J,\text{ }{{Q}_{2}}=-5585\text{ }J,\text{ }{{\text{Q}}_{3}}=-2980\text{ }J,\] \[{{Q}_{4}}=3645\text{ }J;\]respectively. The corresponding works involved are\[{{W}_{1}}=22000\,J,{{W}_{2}}=-825\,J,\] \[{{W}_{3}}=-1100\,J\]and\[{{W}_{4}}\]respectively. The value of\[{{W}_{4}}\]is

A)

1315 J

B)

275 J

C)

765J

D)

675J

View Answer
14) A beam of light consisting of red, green and blue colours is incident on a right-angled prism. The refractive indices of the material of the prism for the above red, green and blue wavelengths are 1.39, 1.44 and 1.47 respectively. The prism will

A)

separate part of the red colour from the green and blue colours

B)

separate part of the blue colour from the red and green colours

C)

separate all the three colours from one another

D)

not separate even partially any colour from the other two colours

View Answer
15) Three blocks of masses\[{{m}_{1}},{{m}_{2}}\]and\[{{m}_{3}}\]kg are placed in contact with each other on a frictionless table. A force F is applied on the heaviest mass\[{{m}_{1}};\]the acceleration of\[{{m}_{3}}\]will be

A)

\[\frac{F}{{{m}_{1}}}\]

B)

\[\frac{F}{{{m}_{1}}+{{m}_{2}}}\]

C)

\[\frac{F}{{{m}_{2}}+{{m}_{3}}}\]

D)

\[\frac{F}{{{m}_{1}}+{{m}_{2}}+{{m}_{3}}}\]

View Answer
16) A particle is moving along a circular path of radius 5 m with a uniform speed\[5\text{ }m{{s}^{-1}}\]. What will be the average acceleration when the particle completes half revolution?

A)

Zero

B)

\[10\,\,m{{s}^{-2}}\]

C)

\[10\,\pi \,m{{s}^{-2}}\]

D)

\[\frac{10}{\pi }\,\,m{{s}^{-2}}\]

View Answer
17) ECE of copper is\[3.3\times {{10}^{-7}}kg/C\]. If 100 kWh energy is consumed at 33 V in a copper voltameter, then mass of copper liberated is

A)

3.6kg

B)

3.3kg

C)

1kg

D)

\[1\,mg\]

View Answer
18) A ray of light is incident on the surface of separation of a medium with the velocity of light at an angle\[45{}^\circ \]and is refracted in the medium at an angle\[30{}^\circ \]. What will be the velocity of light in the -medium?

A)

\[1.96\times {{10}^{8}}m/s\]

B)

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

C)

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

D)

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

View Answer
19) Two identical wires A and B have the same length L and carry the same current\[I\]. Wire A is bent into a circle of radius R and wire B is bent to form a square of side a. If\[{{B}_{1}}\]and\[{{B}_{2}}\] are the values of magnetic induction at the centre of the circle and the centre of the square respectively, then the ratio\[{{B}_{1}}/{{B}_{2}}\]is

A)

\[({{\pi }^{2}}/8)\]

B)

\[({{\pi }^{2}}/8\sqrt{2})\]

C)

\[({{\pi }^{2}}/16)\]

D)

\[({{\pi }^{2}}/16\sqrt{2})\]

View Answer
20) In non-resonant circuit, what will be the nature of the circuit for frequencies higher than the resonant frequency?

A)

Resistive

B)

Capacitive

C)

Inductive

D)

None of these

View Answer
21) A particle of mass m is moving in a circular path of constant radius r such that centripetal acceleration\[{{a}_{c}}\]varying with time is\[{{a}_{c}}={{k}^{2}}r{{t}^{2}}\]where k is a constant. What is the power delivered to the particle by the force acting on it?

A)

\[2mk{{r}^{2}}t\]

B)

\[mk{{r}^{2}}{{t}^{2}}\]

C)

\[m{{k}^{2}}{{r}^{2}}t\]

D)

\[m{{k}^{2}}r{{t}^{2}}\]

View Answer
22) The maximum height attained by a projectile is increased by 5%. Keeping the angle of projection constant, what is the percentage increase in horizontal range?

A)

5%

B)

10%

C)

15%

D)

20%

View Answer
23) A spot of light S rotates in a horizontal plane with a constant angular velocity of 0.1 rad/s. The spot of light P moves along the wall at a distance of 3 m from S. The velocity of spot P, where\[\theta =45{}^\circ ,\]is

A)

0.5 m/s

B)

0.6 m/s

C)

0.7 m/s

D)

0.8 m/s

View Answer
24) White light may be considered to be a mixture of wave with\[\lambda \]ranging between \[3000\overset{\text{o}}{\mathop{\text{A}}}\,\] and \[7800\overset{\text{o}}{\mathop{\text{A}}}\,\]. An oil film of thickness \[10000\overset{\text{o}}{\mathop{\text{A}}}\,\] is examined normally by the reflected light. If \[\mu =1.4,\]then the film appears bright for

A)

\[4308\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ }5091\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ }6222\overset{\text{o}}{\mathop{\text{A}}}\,\]

B)

\[4000\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ }5091\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ 5600}\overset{\text{o}}{\mathop{\text{A}}}\,\]

C)

\[4667\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ 6222}\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ 7000}\overset{\text{o}}{\mathop{\text{A}}}\,\]

D)

\[4000\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ 4667}\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ 5600}\overset{\text{o}}{\mathop{\text{A}}}\,,\,\,70\text{00}\overset{\text{o}}{\mathop{\text{A}}}\,\]

View Answer
25) To get the maximum flight a ball must be thrown as

A)

B)

C)

D)

any of , and

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26) Rain is falling vertically downwards with a velocity of 4 km/h. A man walks in the rain with a velocity of 3 km/h. The raindrops will fall on the man with a velocity of

A)

1 km/h

B)

3 km/h

C)

4 km/h

D)

5 km/h

View Answer
27) A machine gun is mounted on a 200 kg vehicle on a horizontal smooth road (friction negligible). The gun fires 10 bullets per sec with a velocity of 500 m/s. If the mass of each bullet be 10 g, what is the acceleration produced in the vehicle?

A)

\[25cm/{{s}^{2}}\]

B)

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

C)

\[50cm/{{s}^{2}}\]

D)

\[50\,rr/{{s}^{2}}\]

View Answer
28) The displacement of a particle executing periodic motion is given by \[y=4{{\cos }^{2}}(t/2)\sin (1000t)\] This expression may be considered to be a result of superposition of

A)

two waves

B)

three waves

C)

four waves

D)

five waves

View Answer
29) If the series limit wavelength of the Lyman series for hydrogen atom is \[912\overset{\text{o}}{\mathop{\text{A}}}\,\] then the series limit wavelength for the Balmer series for the hydrogen atom is

A)

\[912\overset{\text{o}}{\mathop{\text{A}}}\,\]

B)

\[912\times 2\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

C)

\[912\times 4\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

D)

\[\frac{912}{2}\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

View Answer
30) Assuming that about 20 MeV of energy is released per fusion reaction \[_{1}{{H}^{2}}{{+}_{1}}{{H}^{3}}{{\to }_{0}}{{n}^{1}}{{+}_{2}}H{{e}^{4}}\] then the mass of\[_{1}{{H}^{2}}\]consumed per day in a fusion reactor of power 1 MW will approximately be

A)

0.001 g

B)

0.1 g

C)

10.0 g

D)

1000 g

View Answer
31) A pure semiconductor behaves slightly as a conductor at

A)

room temperature

B)

low temperature

C)

high temperature

D)

Both and

View Answer
32) A coil has an inductance of 0.7 H and is joined in series with a resistance of\[220\,\Omega \]. When an alternating emf of 220 V at 50 cps is applied to it, then the wattles component of the current in the circuit is

A)

5 A

B)

0.5 A

C)

0.7 A

D)

7 A

View Answer
33) Which of the following statements is /are true?

A)

A clock when taken on a mountain can be made to give correct time if we change the length of pendulum suitably

B)

An increase in value of g makes a clock go slow

C)

If the length of a pendulum is increased, the clock becomes fast

D)

A clock when taken to a deep mine or carried to the top of a mountain becomes slow

View Answer
34) Figure below show regular hexagons?, with charges at the vertices. In which case is the electric field at the centre zero?

A)

B)

C)

D)

View Answer
35) There is a current of 40 A in a wire of\[{{10}^{-6}}{{m}^{2}}\]area of cross-section. If the number of free electrons per cubic metre is\[{{10}^{29}},\]then the drift velocity is

A)

\[250\times {{10}^{-3}}m/s\]

B)

\[25.0\times {{10}^{-3}}m/s\]

C)

\[2.50\times {{10}^{-3}}m/s\]

D)

\[1.25\times {{10}^{3}}m/s\]

View Answer
36) A mixture of hi moles of monoatomic gas and moles of diatomic gas has\[\frac{{{C}_{p}}}{{{C}_{V}}}=\gamma =1.5\]. Then

A)

\[{{n}_{1}}={{n}_{2}}\]

B)

\[2{{n}_{1}}={{n}_{2}}\]

C)

\[{{n}_{1}}=2{{n}_{2}}\]

D)

\[2{{n}_{1}}=3{{n}_{2}}\]

View Answer
37) Change in frequency due to Dopple?s effect is produced when

A)

the source and the observer are moving in the same direction

B)

the source and the observer are both at rest

C)

there is a relative motion between the source and the observer

D)

there is a resultant motion between the source and observer

View Answer
38) A dip needle arranged to move freely in the magnetic meridian dips by an angle\[\theta \]. If the vertical plane in which the needle moves is rotated through an angle a to the magnetic meridian, then the needle will dip by an angle

A)

\[\theta \]

B)

\[\alpha \]

C)

more than\[\theta \]

D)

less than\[\theta \]

View Answer
39) The coming rays are forming rainbows

A)

Figure (1) forms primary rainbow

B)

Figure (1) and (3) form primary rainbow

C)

Figure (2) forms secondary rainbow

D)

Figure (1) forms secondary rainbow

View Answer
40) A table tennis ball which has been covered with a conducting paint is suspended by a silk thread so that it hangs between two metal plates. One plate is earthed. When the other. plate is connected to a high voltage generator, the ball

A)

is attracted to the high voltage plate and stays there

B)

hangs without moving

C)

swings backward and forward hitting each plate in turn

D)

is repelled to the earthed plate and stays there

View Answer
41) In a step-up transformer, the turn ratio is 1 2 . A Leclanche cell (emf = 1.5 V) is connected across the primary. The voltage developed in the secondary would be

A)

3.0V

B)

0.75V

C)

1.5V

D)

zero

View Answer
42) If the total magnetic field due to earth is 28 A/m, then the total magnetic induction due to earth is

A)

28 T

B)

280 ab-amp/cm

C)

0.352 gauss

D)

0.352 T

View Answer
43) In an adiabatic process wherein pressure is increased by\[\frac{2}{3}%\]. If\[\frac{{{C}_{p}}}{{{C}_{V}}}=\frac{3}{2},\]then the volume decreases by about

A)

\[\frac{4}{9}%\]

B)

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

C)

\[4%\]

D)

\[\frac{9}{4}%\]

View Answer
44) The wavelength of the\[{{K}_{\alpha }}\]line for an element of atomic number 43 is\[\lambda .\]Then the wavelength of the\[{{K}_{\alpha }}\]line for an element of atomic number

A)

\[\left( \frac{43}{29} \right)\lambda \]

B)

\[\left( \frac{42}{28} \right)\lambda \]

C)

\[\left( \frac{9}{4} \right)\lambda \]

D)

\[\left( \frac{4}{9} \right)\lambda \]

View Answer
45) The process of adding impurities to the pure semiconductor is called

A)

drouping

B)

drooping

C)

doping

D)

none of these

View Answer
46) The radioactivity of a sample is\[{{R}_{1}}\]at a time\[{{T}_{1}}\]and\[{{R}_{2}}\]at times\[{{T}_{2}}\]. the half-life of the specimen is T, the number of atoms that have disintegrated at the time\[({{T}_{2}}-{{T}_{1}})\]is proportional to

A)

\[{{R}_{1}}{{T}_{1}}-{{R}_{2}}{{T}_{2}}\]

B)

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

C)

\[\frac{{{R}_{1}}-{{R}_{2}}}{T}\]

D)

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

View Answer
47) A proton, a deuteron and an\[\alpha -\]particle with the same KE enter a region of uniform magnetic field, moving at right angles to B. What is the ratio of the radii of their circular paths?

A)

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

B)

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

C)

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

D)

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

View Answer
48) Two streams of protons move parallel to each other in the same direction. Then these

A)

do not interact at all

B)

attract each other

C)

repel each other

D)

get rotated to be 1 to each other

View Answer
49) The ratio of the speed of an object to the speed of its real image of magnification m of a convex mirror is

A)

\[-1/{{m}^{2}}\]

B)

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

C)

\[-m\]

D)

\[1/m\]

View Answer
50) The maximum current that flows in the fuse wire, before it blows out, varies with the radius r as

A)

\[{{r}^{3/2}}\]

B)

r

C)

\[{{r}^{2/3}}\]

D)

\[{{r}^{1/2}}\]

View Answer
51) The incorrect statement is

A)

circumference of electron orbit\[(2\pi r)=n\lambda \] (n = an integer)

B)

de-Broglie equation:\[\lambda =\frac{n}{mv}\]

C)

angular momentum of an electron\[\left( \frac{h}{mv}=\frac{2\pi r}{n}or\,mvr=n\frac{h}{2\pi } \right)\]is an integral multiple of\[\frac{h}{2\pi }\]

D)

angular momentum of the electron is not quantized

View Answer
52) Which of the following is not possible for\[4p\]or\[3d\]electrons?

A)

\[n=3,l=2,m=+1,s=+\frac{1}{2}\]

B)

\[n=4,l=1,m=0,s=+\frac{1}{2}\]

C)

\[n=3,l=3,m=+3,s=+\frac{1}{2}\]

D)

\[n=4,l=1,m=-1,s=+\frac{1}{2}\]

View Answer
53) Assertion :\[H{{e}_{2}}\]does not exist. Reason (R): Bond-order of\[H{{e}_{2}}\]is zero.

A)

A and R both are correct and R is me correct explanation of A.

B)

A and R both are correct but R is not the correct explanation of A.

C)

A is incorrect but R is correct.

D)

Both A and R are incorrect.

View Answer
54) Internal energy for one mole of an ideal gas is

A)

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

B)

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

C)

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

D)

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

View Answer
55) Which of the following is correct?

A)

\[{{C}_{V}}={{\left( \frac{\delta u}{\delta T} \right)}_{p}}\]

B)

\[{{\left( \frac{\delta H}{\delta T} \right)}_{V}}\]

C)

\[{{C}_{p}}-{{C}_{V}}=R\] for one mole of an ideal gas

D)

\[{{\left( \frac{\delta u}{\delta V} \right)}_{T}}=-\frac{a}{{{V}^{2}}}\](internal pressure in van der Waals' equation)

View Answer
56) The correct order of decreasing dipole moment of (I) toluene, (II) m -dichlorobenzene , (III) o-dichlorobenzene and (IV) p -dichlorobenzene is

A)

IV < II < I < III

B)

IV < I < II < III

C)

I < IV < II < III

D)

IV < I < III < II

View Answer
57) Which of the following is weakest?

A)

Ionic

B)

Covalent

C)

van der Waals forces

D)

Metallic bond

View Answer
58) The reaction favoured at low pressure is

A)

\[{{H}_{2}}(g)+{{I}_{2}}(g)2HI(g)\]

B)

\[PC{{l}_{5}}(g)PC{{l}_{3}}(g)+C{{l}_{2}}(g)\]

C)

\[{{N}_{2}}(g)+{{O}_{2}}(g)2NO(g)\]

D)

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

View Answer
59) According to Bronsted, a base can

A)

accept protons

B)

donate protons

C)

lose a pair of electrons

D)

gain a pair of electrons

View Answer
60) Which of the following is incorrect?

A)

\[{{H}_{2}}{{O}_{2}}\]is a weak acid

B)

\[{{H}_{2}}{{O}_{2}}\]is a weak alkali

C)

\[{{H}_{2}}{{O}_{2}}\]acts as an oxidising agent

D)

\[{{H}_{2}}{{O}_{2}}\]is a reducing agent

View Answer
61) Diagonal relationship is not shown by

A)

Li and Mg

B)

Be and Al

C)

B and Si

D)

C and P

View Answer
62) The IUPAC name of\[{{(C{{H}_{3}})}_{2}}CHC{{H}_{3}}\]is

A)

dimethylethane

B)

trimethylmethane

C)

isopropylmethane

D)

2-methyl propane

View Answer
63) Which of the following is incorrect?

A)

Functional isomerism is shown by \[C{{H}_{3}}C{{H}_{2}}OH\text{ }and\text{ }C{{H}_{3}}OC{{H}_{3}}\]

B)

\[H-\underset{\begin{smallmatrix} | \\ H \end{smallmatrix}}{\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{C}}}\,-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{C}}}\,-H\xrightarrow{Conc.\,{{H}_{2}}S{{O}_{4}}}\]\[H-\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{C}}\,=\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{C}}\,-H+{{H}_{2}}O\]

C)

Glucose is a monosaccharide sugar

D)

Fructose is a disaccharide sugar

View Answer
64) The strongest acid is

A)

\[CH\equiv CH\]

B)

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

C)

\[{{C}_{2}}{{H}_{6}}\]

D)

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

View Answer
65) Assertion : Graphite is soft while diamond is very hard. Reason (R): Graphite has three dimensional structure while diamond has planar.

A)

A and R both are correct and R is the correct explanation of A.

B)

A and R both are correct but R is not the correct explanation of A.

C)

A is correct but R is incorrect.

D)

A is incorrect while R is correct.

View Answer
66) Which of the following is incorrect?

A)

A real gas behaves like an ideal gas over a wide range of pressure(\[\sim 100\]atm) at Boyle point.

B)

A real gas behaves like an ideal gas over a wide range of pressure (\[\sim 100\]atm) at critical temperature of the gas.

C)

\[{{\left( \frac{\delta u}{\delta V} \right)}_{T}}=0\]for an ideal gas.

D)

\[{{\left( \frac{\delta u}{\delta V} \right)}_{T}}=\frac{a}{{{V}^{2}}}\]for a real gas obeying van der Waals' equation.

View Answer
67) The homogeneous catalysis is shown by

A)

Haber?s process: \[{{N}_{2}}(g)+3{{H}_{2}}(g)\xrightarrow[{}]{Fe(s)}2N{{H}_{3}}(g)\]

B)

Ostwald process: \[4N{{H}_{3}}(g)+5{{O}_{2}}(g)\xrightarrow[{}]{Pt(s)}\]

C)

Contact process: \[2S{{O}_{2}}(g)+{{O}_{2}}(g)\xrightarrow{Pt(s)}2S{{O}_{3}}(g)\]

D)

\[2{{C}_{2}}{{H}_{5}}OH(aq)\xrightarrow{{{H}_{2}}S{{O}_{4}}(aq)}\] \[{{C}_{2}}{{H}_{5}}-O-{{C}_{2}}{{H}_{5}}(aq)+{{H}_{2}}O(l)\]

View Answer
68) Which of the following is incorrect?

A)

Invertase carries the hydrolysis of sugar into glucose and fructose.

B)

Starch is converted into maltose with the help of diastase.

C)

Maltase helps in converting maltose into glucose.

D)

Maltase helps in converting starch into maltose.

View Answer
69) Which of the following is incorrect match?

A)

B)

Name of colloidal solution Examples Dispersed phase Dispersion medium

Foam Soap leather, soda water Gas Solid

C)

Name of colloidal solution Examples Dispersed phase Dispersion medium

Solid foam Rubber, bread Gas Solid

D)

Name of colloidal solution Examples Dispersed phase Dispersion medium

Aerosol Mist, for, cloud Liquid Solid

Name of colloidal solution Examples Dispersed phase Dispersion medium

Emulsion Milk, cod liver oil Liquid Liquid

View Answer
70) Assertion : The ionic size of\[M{{g}^{2+}}>A{{l}^{3+}}\] Reason (R): In isoelectronic species, greater the nuclear charge, less is the size.

A)

A and R both are correct and R is the correct explanation of A.

B)

A and R both are correct but R is not the correct explanation of A.

C)

A is incorrect while R is correct.

D)

A and R both are incorrect.

View Answer
71) Assertion : Silica is soluble in HF. Reason (R): \[Si{{O}_{2}}+4HF\xrightarrow[{}]{{}}Si{{F}_{4}}+2{{H}_{2}}O\] \[Si{{F}_{4}}+2HF\xrightarrow[{}]{{}}{{H}_{2}}Si{{F}_{6}}\]

A)

A and R both are correct and R is the correct explanation of A.

B)

A and R both are correct but R is not the correct explanation of A.

C)

A and R both are incorrect.

D)

A is correct while R is incorrect.

View Answer
72) Total number of rare earth elements is

A)

8

B)

32

C)

14

D)

10

View Answer
73) In the reduction of\[KMn{{O}_{4}}\]by warm acidified oxalic acid, the oxidation number of Mn changes from

A)

+ 4 to + 2

B)

+ 6 to + 4

C)

+ 7 to +2

D)

+ 7 to + 4

View Answer
74) Assertion :\[{{[Co{{F}_{6}}]}^{3-}}\]is paramagnetic. Reason (R):\[C{{o}^{3+}}\]has\[3{{d}^{6}}\]outer electronic configuration. The unpaired electrons do not pair up because of weak field provided by\[{{F}^{-}}\].

A)

A and R both are correct and R is the correct explanation of A.

B)

A and R both are correct but R is not the correct explanation of A.

C)

A is incorrect while R is correct.

D)

A and R both are incorrect.

View Answer
75) In the nuclear reaction:\[_{4}^{9}Be+_{1}^{1}H\to X+_{2}^{4}He,\] the X is

A)

\[_{2}^{4}He\]

B)

\[_{3}^{6}Li\]

C)

\[_{3}^{7}Li\]

D)

\[_{4}^{8}Be\]

View Answer
76) Which of the following has the highest electron releasing tendency?

A)

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

B)

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

C)

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

D)

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

View Answer
77) Which of the following is incorrect?

A)

Primary alcohols are easily oxidised to aldehydes, which are oxidised to acids with the same number of C-atoms.

B)

Secondary alcohols are easily oxidised to ketones, which are oxidised to acids with the same number of C-atoms.

C)

Secondary alcohols are easily oxidised to ketones, which are oxidised to acids with lesser number of C-atoms.

D)

Secondary and tertiary alcohols on oxidation form acids with lesser number of C-atoms.

View Answer
78) For the reaction: \[{{C}_{2}}{{H}_{5}}OH+HX\xrightarrow[(anhyd.)]{ZnC{{l}_{2}}}{{C}_{2}}{{H}_{5}}X+{{H}_{2}}O\] The order of reactivity of HX is shown by

A)

\[HBr>HCl>HI\]

B)

\[HI>HCl>HBr\]

C)

\[HI>HBr>HCl\]

D)

\[HCl>HBr>HI\]

View Answer
79) The compound which cannot reduce Fehling solution is

A)

\[HCHO\]

B)

\[HCOOH\]

C)

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

D)

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

View Answer
80) The correct order of basic strengths in benzene solution is

A)

\[C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{2}}NH>{{(C{{H}_{3}})}_{3}}N\]

B)

\[{{(C{{H}_{3}})}_{2}}NH>{{(C{{H}_{3}})}_{3}}N>C{{H}_{3}}N{{H}_{2}}\]

C)

\[{{(C{{H}_{3}})}_{3}}N>C{{H}_{3}}N{{H}_{2}}>{{(CH{{ }_{3}})}_{2}}NH\]

D)

\[{{(C{{H}_{3}})}_{3}}N>{{(C{{H}_{3}})}_{2}}NH>C{{H}_{3}}N{{H}_{2}}\]

View Answer
81) Which of the following will not give primary amine?

A)

\[C{{H}_{3}}CON{{H}_{2}}\xrightarrow[{}]{B{{r}_{2}}/KOH}\]

B)

\[C{{H}_{3}}CN\xrightarrow[{}]{LiAl{{H}_{4}}}\]

C)

\[C{{H}_{3}}NC\xrightarrow[{}]{LiAl{{H}_{4}}}\]

D)

\[C{{H}_{3}}CON{{H}_{2}}\xrightarrow[{}]{LiAl{{H}_{4}}}\]

View Answer
82) Bakelite is obtained from phenol by reacting it with

A)

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

B)

acetal

C)

\[HCHO\]

D)

chlorobenzene

View Answer
83) Nylon- 66 is

A)

polyamide

B)

polyester

C)

polystyrene

D)

polyvinyl

View Answer
84) Vitamin\[{{B}_{12}}\]contains

A)

Fe (II)

B)

Co (III)

C)

Zn (II)

D)

Ca (II)

View Answer
85) Which of the following is not true for antibiotics?

A)

Tetracycline is one of the broad spectrum antibiotics which are effective against a large number of harmful micro-organisms.

B)

Streptomycin is highly effective against micro-organisms which cause tuberculosis.

C)

Penicillin has a narrow spectrum and certain persons are sensitive to it.

D)

Penicillin may be administered without testing the patients for sensitivity to it.

View Answer
86) Assertion : Rate of reaction increases with increase in temperature. Reason (R): Number of collision increases with increase in temperature.

A)

A and R both are correct and R is the correct explanation of A.

B)

A and R both are correct but R is not the correct explanation of A.

C)

A is correct but R is incorrect.

D)

A and R both are incorrect.

View Answer
87) Which of the following is incorrect match for Hybridisation and geometry?

A)

Hybridistaion                     Geometry                 \[ds{{p}^{2}}\]                                  Planar

B)

                \[{{d}^{3}}s\]and\[s{{p}^{3}}\]                  Tetragedrak

C)

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

D)

                \[{{d}^{3}}s\]                                     Planar

View Answer
88) Assertion : Meniscus of a liquid disappears at the critical temperature. Reason (R): Density of liquid and its gaseous phase become equal at the critical temperature.

A)

A and R both are correct and R is the correct explanation of A.

B)

A and R both are correct but R is not the correct explanation of A.

C)

A is correct but R is incorrect.

D)

A is incorrect while R is correct.

View Answer
89) Which of the following is correct?

A)

The outer electronic configuration of Cu (29) and Cr (24) are\[3{{d}^{9}},4{{s}^{2}}\]and\[3{{d}^{4}},4{{s}^{2}}\] respectively.

B)

\[C{{H}_{3}}CHO\]gives hexamethylenetetramine with\[N{{H}_{3}}\]

C)

\[\Delta G=\Delta G{}^\circ \]at equilibrium

D)

\[{{A}_{2}}(g)+{{B}_{2}}(g)2AB(g)\]is unaffected by variations in pressure.

View Answer
90) Which of the following is not true?

A)

In a first order reaction, the half-life is independent of the initial concentration of reactant.

B)

A given piece of charcoal shows increase in its surface area in its powdered form.

C)

In valence bond of\[{{H}_{2}},\]each electron spends its time around its own nucleus.

D)

In valence bond of\[{{H}_{2}},\]both the electrons spend their time around both the nucleus.

View Answer
91) The ground state electronic configuration of nitrogen is represented by

A)

B)

C)

D)

View Answer
92) Which of the following sets of quantum numbers belong to highest energy?

A)

\[n=4,\text{ }l=0,\text{ }m=0\text{ }and\text{ s}=+\frac{1}{2}\]

B)

\[n=3,\text{ }l=0,\text{ }m=0\text{ }and\text{ }s=+\frac{1}{2}\]

C)

\[n=3,\text{ }l=1,\text{ }m=+1\text{ }and\text{ }s=+\frac{1}{2}\]

D)

\[n=3,\text{ }l=2,\text{ }m=+1\text{ }and\text{ }s=+\frac{1}{2}\]

View Answer
93) The correct order of increasing energy of atomic orbitals is

A)

\[5p<4f<6s<5d\]

B)

\[5p<65<4p<5d\]

C)

\[4f<5p<5d<6s\]

D)

\[5p<5d<4f<6s\]

View Answer
94) In a solid lattice, the cation has left a lattice site and is located at an interstitial position. The lattice defect is

A)

interstitial defect

B)

vacancy defect

C)

Frenkel defect

D)

Schottky defect

View Answer
95) Schottky defect in crystals is observed when.

A)

unequal number of cations and anions is missing from the crystal lattice.

B)

equal number of cations and anions is missing from the crystal lattice.

C)

an anion leaves its normal site and occupies an interstitial site.

D)

density of the crystal is increased.

View Answer
96) Which of the following represents the molarity of pure water?

A)

55.5

B)

56.5

C)

50.5

D)

57.55

View Answer
97) The set of quantum numbers not applicable for an electron in an atoms is

A)

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

B)

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

C)

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

D)

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

View Answer
98) The effect of temperature on reaction rate is shown by

A)

Kirchoff?s equation

B)

Arrhenius equation

C)

Gibb's-Helmholtz equation

D)

Clasius-Clapeyron equation

View Answer
99) Identify the incorrect statement among the following

A)

d-block elements show irregular and erratic chemical properties among themselves

B)

La and Lu have partially filled d orbitals and no other partially filled orbitals

C)

The chemistry of various lanthanoids is very similar

D)

\[4f\]and\[5f\]orbitals are equally shielded

View Answer
100) Which one of the following has a square planar geometry?

A)

\[{{[CoC{{l}_{4}}]}^{2-}}\]

B)

\[{{[FeC{{l}_{4}}]}^{2-}}\]

C)

\[{{[NiC{{l}_{4}}]}^{2-}}\]

D)

\[{{[PtC{{l}_{4}}]}^{2-}}\]

View Answer
101) Rabbit is

A)

carnivore

B)

herbivore

C)

Both and

D)

sanguirore

View Answer
102) Medusa is the reproductive organ of the organism

A)

Hydra

B)

Aurelia

C)

Obelia

D)

Sea anemone

View Answer
103) Which of the following organs is the blood bank?

A)

Heart

B)

Lungs

C)

Spleen

D)

Liver

View Answer
104) Cavity of coelenterates is called

A)

coelenteron

B)

coelom

C)

cavity

D)

None of these

View Answer
105) Allergy involves

A)

\[\text{IgE}\]

B)

\[\text{IgF}\]

C)

\[\text{IgA}\]

D)

\[\text{IgM}\]

View Answer
106) Frog's tadpode is

A)

uricotelic

B)

ureotelic

C)

ammonotelic

D)

aminotelic

View Answer
107) RBCs are nucleated in

A)

man

B)

rabbit

C)

frog

D)

All of these

View Answer
108) 2n -1 condition is called

A)

trisomy

B)

monosomy

C)

nullisomy

D)

tetrasomy

View Answer
109) Giant chromosomes are found inside

A)

nucleus of man

B)

oocyres of frog

C)

salivary glands of silk moth

D)

salivary glands of Drosophila

View Answer
110) All Bowman's capsules of the kidney are found in

A)

pelvis

B)

medulla

C)

cortex

D)

None of these

View Answer
111) Which of the following is the most primitive ancestor of man?

A)

Homo neanderthalensis

B)

Homo habilis

C)

Ramapithecus

D)

Auscralopithecus

View Answer
112) Rhabditi form is the larva of

A)

Hydra

B)

Plaryhelmin the

C)

Ascaris

D)

Earthworm

View Answer
113) Sex determination ratio in an organism is given\[\frac{X}{A}=1.5,\] then organism will be

A)

male

B)

female

C)

super female

D)

intersex

View Answer
114) Hepatitis-B is also called

A)

epidemic jaundice

B)

serum jaundice

C)

catarrhal jaundice

D)

None of these

View Answer
115) Hormone that promotes cell division, protein synthesis and bone growth is

A)

ADH

B)

ACTH

C)

PTH

D)

GH

View Answer
116) Persons with Klinefelter syndrome have chromosomes

A)

\[\text{XX}\]

B)

\[\text{XY}\]

C)

\[\text{XXY}\]

D)

\[\text{XYY}\]

View Answer
117) Theory of pangenesis was given by

A)

Darwin

B)

Lamarck

C)

Hugo de Vries

D)

Oparin

View Answer
118) Which of the following pairs is correct

A)

E coli?Entamoeba histolytica

B)

Culex?Elephantiasis

C)

Bed bug?Kala-azar

D)

Plasmodium?Sleeping sickness

View Answer
119) Organisms living in open sea are called

A)

planktons

B)

nektons

C)

pelagic

D)

benthos

View Answer
120) Bacterium, which is concerned with pertussis is

A)

Bordetella pertussis

B)

Bacillus

C)

Diplococcus

D)

Mycobacterium tuberculum

View Answer
121) Different colours of frog's skin are controlled by

A)

hormones

B)

melanocytes

C)

nervous system

D)

Both and

View Answer
122) Blastula of frog has

A)

blastopore

B)

blastocoel

C)

archenteron

D)

gastropore

View Answer
123) Carotene pigment is found in the cells of

A)

dermis

B)

epidermis

C)

adipose cell

D)

Both and

View Answer
124) Debove's membrane is a layer of

A)

muscular tissue

B)

epithelial tissue

C)

connective tissue

D)

All of the above

View Answer
125) Achilles tendon is associated with

A)

gluteus muscle

B)

hamstring muscle

C)

quadriceps muscle

D)

gastrocnemius muscle

View Answer
126) In the life cycle of mosquito, comma-shaped stage is

A)

larval stage

B)

pupal stage

C)

imago stage

D)

None of these

View Answer
127) Haemocoel is found in

A)

Hydra and Aurelia

B)

Taenia and Ascaris

C)

Cockroach and Pila

D)

Balanoglossus and Herdmania

View Answer
128) The group of an amniota includes

A)

reptiles and birds

B)

birds and mammals

C)

fishes and amphibians

D)

reptiles and mammals

View Answer
129) The excretory material of bony fish is

A)

urea

B)

protein

C)

ammonia

D)

amino acid

View Answer
130) Which of the following variations are temporary and have nothing to do with the or next generation?

A)

Hereditary variations

B)

Discontinuous variations

C)

Environmental variations

D)

None of the above

View Answer
131) The modem man differs from the apes in

A)

protruding eyes

B)

spare body hair

C)

wearing of clothes

D)

arms shorter than legs

View Answer
132) The leucocytes contain which of the following in large quantity ?

A)

Basophils

B)

Neutrophils

C)

Eosinophils

D)

Monocytes

View Answer
133) Which part of our body secretes the hormone secretin ?

A)

Ileum

B)

Stomach

C)

Duodenum

D)

Oesophagus

View Answer
134) During inspiration, the diaphragm

A)

expands

B)

shows no change

C)

contracts and flattens

D)

relaxes to become dome-shaped

View Answer
135) The oxygen toxicity is related with

A)

blood poisoning

B)

collapsing of alveolar walls

C)

failure of ventilation of lungs

D)

Both and

View Answer
136) Cardiac output is determined by

A)

heart rate

B)

stroke volume

C)

blood How

D)

Both and

View Answer
137) The important function of lymph is to

A)

transport oxygen to the brain

B)

transport carbon dioxide to the lungs

C)

return RBCs to the lymph nodes

D)

return in terstial fluid to the blood

View Answer
138) The lining of intestine and kidneys in human is

A)

keratinized

B)

brush bordered

C)

ciliated

D)

None of these

View Answer
139) Which of the following is not vestigial in man?

A)

Tail vertebrae

B)

Nails

C)

Nictitating membrane

D)

Vermiform appendix

View Answer
140) The chemical used in 'National Malaria Eradication Programme' is

A)

2,4-D

B)

BHC

C)

DDT

D)

Pyrethroid

View Answer
141) An eukaryotic gene contains two kinds of base sequences. Which of these plays an important role in protein synthesis ?

A)

Introns

B)

Exons

C)

Both and

D)

None of these

View Answer
142) The Leydig cells secrete

A)

oestrogen

B)

testosterone

C)

progesterone

D)

corticosterone

View Answer
143) The function of pineal body is to

A)

lighten the skin colours

B)

control sexual behavior

C)

regulate the period of puberty

D)

All of the above

View Answer
144) Which of the following nerve is purely motor nerve ?

A)

Vagus

B)

Facial

C)

Abducens

D)

Trigeminal

View Answer
145) Which of the following parts of a neuron is covered by fatty sheath ?

A)

Axon

B)

Cyton

C)

Dendrite

D)

Node of Ranvier

View Answer
146) The enzyme, which combines with non-protein part to form a functional enzyme known as

A)

co-enzyme

B)

holoenzyme

C)

apoenzyme

D)

prosthetic group

View Answer
147) Which of the following enzymes digests protein in stomach?

A)

Trypsin

B)

Pepsin

C)

Crepsin

D)

None of these

View Answer
148) Passive food ingestion in Amoeba is known as

A)

import

B)

invagination

C)

circumfluence

D)

circumvallation

View Answer
149) Ecdysone is secreted from

A)

Insects

B)

Trematoda

C)

Nematoda

D)

Polychaeta

View Answer
150) The eggs of silk moth are

A)

haemolecithal

B)

telolecithal

C)

mesolecithal

D)

centrolecithal

View Answer
151) RNA and proteins are formed in

A)

\[{{\text{G}}_{\text{1}}}\text{-}\]phase

B)

\[{{\text{G}}_{\text{2}}}\text{-}\]phase

C)

S-phase

D)

\[{{\text{G}}_{\text{o}}}\text{-}\]phase

View Answer
152) Growth promoting hormone is

A)

\[\text{IAA}\]

B)

Gibberellin

C)

2,4-D

D)

ABA

View Answer
153) Which of the following genes show the heterozygous condition?

A)

Rr

B)

RR

C)

rr

D)

None of these

View Answer
154) Which of the following enzymes is responsible for formation of glucose from glucose-6-phosphate?

A)

Kinase

B)

Aldolase

C)

Dehydrogenase

D)

Phosphatase

View Answer
155) Binomial nomenclature was introduced by

A)

de Vries

B)

Carolus Linnaeus

C)

Pranti

D)

Bentham and Hooker

View Answer
156) Transduction in bacteria was discovered by

A)

Zinder and Lederberg

B)

Wallace and Jacob

C)

Herelle and Twort

D)

Lederberg and Tatum

View Answer
157) Protista includes

A)

unicellular eukaryotes

B)

multi cellullar prokaryotes

C)

unicellular prokaryotes

D)

All of the above

View Answer
158) Bakanae disease is caused by

A)

fungus

B)

alga

C)

bacterium

D)

virus

View Answer
159) Fermentation is

A)

anaerobic respiration

B)

incomplete oxidation of carbohydrate

C)

complete oxidation of carbohydrate

D)

None of the above

View Answer
160) Lichen is the association of

A)

Protista and algae

B)

fungi and bacteria

C)

Protista and fungi

D)

algae and fungi

View Answer
161) A chemical substance produced by a micro-organism for inhibiting the growth of another is

A)

antibody

B)

antibiotic

C)

aflatoxin

D)

antiallergic

View Answer
162) Which of the following is/are essential fatty acids for man?

A)

Arachidonic acid

B)

Linolenic acid

C)

Linoleic acid

D)

All of these

View Answer
163) Golgi apparatus is absent in

A)

higher plant

B)

yeast

C)

bacteria and blue-green algae

D)

liver cells

View Answer
164) Which of the following is the formula of chlorophyll\[\text{- }\!\!\alpha\!\!\text{ }\]?

A)

\[{{\text{C}}_{\text{55}}}{{\text{H}}_{\text{70}}}{{\text{O}}_{\text{2}}}{{\text{N}}_{\text{4}}}\text{Mg}\]

B)

\[{{\text{C}}_{\text{55}}}{{\text{H}}_{\text{72}}}{{\text{O}}_{\text{5}}}{{\text{N}}_{\text{4}}}\text{Mg}\]

C)

\[{{\text{C}}_{\text{55}}}{{\text{H}}_{\text{72}}}{{\text{O}}_{\text{2}}}{{\text{N}}_{\text{4}}}\text{Mg}\]

D)

\[{{\text{C}}_{\text{55}}}{{\text{H}}_{\text{70}}}{{\text{O}}_{\text{5}}}{{\text{N}}_{\text{4}}}\text{Mg}\]

View Answer
165) The largest phase of meiosis\[\text{-I}\] is

A)

prophase\[\text{-I}\]

B)

metaphase\[\text{-I}\]

C)

anaphase\[\text{-I}\]

D)

telophase\[\text{-I}\]

View Answer
166) The number of hydrogen bonds between adenine and thymine is

A)

two

B)

three

C)

four

D)

eight

View Answer
167) Insectivorous plant eats the insect for

A)

Na-K

B)

nitrogen

C)

chlorine

D)

phosphorus

View Answer
168) Which of the following pairs are correctly matched?

A)

Central dogma?codon

B)

Okazaki fragments?splicing

C)

RNA polymerase?RNA primer

D)

Restriction enzyme?Genetic engineering

View Answer
169) Which of the following is most resistant material in pollen grain?

A)

Sporopollenin

B)

In tine

C)

Cellulose

D)

Cuticle

View Answer
170) CO is a pollutant because

A)

it reacts with \[{{C}_{3}}\]

B)

it inhibits glycolysis

C)

it reacts with haemoglobin

D)

it makes nervous system inactive

View Answer
171) First stable product of \[{{C}_{3}}\]-plant is

A)

PGDP

B)

PGA

C)

oxalic acid

D)

malate

View Answer
172) The floral formula Br or EBr \[\otimes \,{{K}_{(5)}}\,{{C}_{(5)}}\,{{A}_{o}}\,{{\overline{G}}_{(3)}}\] belongs to family

A)

Liliaceae

B)

Cucurbitacea

C)

Graminae

D)

Solanaceae

View Answer
173) 'Golden rice' is a rice variety rich in

A)

\[\text{ }\!\!\beta\!\!\text{ -}\]carotene

B)

lysine

C)

vitamin-C

D)

iron

View Answer
174) Which of the following ecological pyramids never occur in an inverted form?

A)

Pyramid of number

B)

Pyramid of biomass

C)

Pyramid of energy

D)

Pyramid of species richness

View Answer
175) Velamen tissue is found in

A)

mesophytes

B)

epiphytes

C)

hydrophytes

D)

xerophytes

View Answer
176) The edible pan of apple is

A)

mesocarp

B)

endocarp

C)

epicarp

D)

fleshy thalamus

View Answer
177) Active transport

A)

releases energy

B)

requires energy

C)

produces ATP

D)

produces a toxic substance

View Answer
178) Osmosis involves

A)

flow of water without a membrane

B)

flow of solute from a semipermeable membrane

C)

flow of solvent \[({{H}_{2}}O)\] through semi permeable membrane

D)

None of the above

View Answer
179) Pollination by insect is

A)

emomophily

B)

chiropterophr

C)

anemophify

D)

zoophily

View Answer
180) Virus multiplies in

A)

soil

B)

dead tissue

C)

living tissue

D)

culture medium

View Answer
181) Which of the following techniques, other than microscopy is used for study of cell?

A)

Maceration

B)

Plasmolysis

C)

Chromatography

D)

Autoradiography

View Answer
182) Robert Hooke used the term cell in the year

A)

1650

B)

1665

C)

1865

D)

1960

View Answer
183) Protein synthesis takes place in

A)

ribosomes

B)

chloroplasts

C)

mitochondria

D)

Golgi bodies

View Answer
184) Replication of centriole occurs during

A)

interphase

B)

prophase

C)

late prophase

D)

late telophase

View Answer
185) Which of the following is true about bryophytes?

A)

They are thalloid

B)

They contain chloroplast

C)

They possess archegonia

D)

All of the above

View Answer
186) The kidney-shaped covering of sorus in Dryopteris's, is called

A)

placenta

B)

ramentum

C)

sporophyll

D)

indusium

View Answer
187) Replum is found in family

A)

Labiatae

B)

Malvaceae

C)

Compositae

D)

Brassicaceae

View Answer
188) Which of the following is a wheat fruit?

A)

Achene

B)

Cypsella

C)

Caryopsis

D)

Endosperm

View Answer
189) A gymnospermic leaf carries 16 chromosomes. The number of chromosomes in its endosperm is

A)

24

B)

16

C)

12

D)

8

View Answer
190) Tyloses thickenings are seen in

A)

collenchyma

B)

phloem cells

C)

ray parenchyma only

D)

ray parenchyma and xylem cells

View Answer
191) Ethyl alcohol is commercially manufactured from

A)

bajra

B)

grapes

C)

maize

D)

sugarcane

View Answer
192) A hormone delaying senescence is

A)

auxin

B)

cytokinin

C)

ethylene

D)

gibberellins

View Answer
193) What name has been assigned to the genus produced by a cross between cabbage and radish?

A)

Secale

B)

Bursa pastoris

C)

Lysogenicophyll

D)

Raphanobrassica

View Answer
194) Morphine obtained from Opium is

A)

latex

B)

pome

C)

alkaloid

D)

tannin

View Answer
195) The term heterosis was first coined by

A)

McCtintock

B)

Power

C)

Swaminathan

D)

None of these

View Answer
196) L-shaped chromosomes are also called

A)

acrocentric

B)

telocentric

C)

sub-metacentric

D)

None of these

View Answer
197) Which of the following is/are grouped under phanerogams ?

A)

Angiospenns

B)

Gymnosperms

C)

Pteridophytes

D)

Both and

View Answer
198) A bacterium divides after every 35 minutes. If culture containing \[{{10}^{5}}\] cells per mL is grown then cell concentration per mL after 175 minutes will be

A)

\[175\times {{10}^{5}}\]

B)

\[125\times {{10}^{5}}\]

C)

\[48\times {{10}^{5}}\]

D)

\[32\times {{10}^{5}}\]

View Answer
199) Cladonia rangiferina is a/an

A)

algae

B)

lichen

C)

fungus

D)

angiosperm

View Answer
200) Which of the following is an algal parasite?

A)

Volvox

B)

Ulothrix

C)

Porphyra

D)

Cephaleuros

View Answer