Solved papers for J & K CET Medical J & K - CET Medical Solved Paper-2010

J & K - CET Medical Solved Paper-2010 Total Questions - 225

1) Two springs of spring constants \[{{k}_{1}}\] and \[{{k}_{2}}\] are joined in series and a mass m is attached to them as shown in figure. The time-period of oscillations of the springs is

A)

\[T=\pi \sqrt{\frac{m({{k}_{1}}+{{k}_{2}})}{{{k}_{1}}{{k}_{2}}}}\]

B)

\[T=2\pi \sqrt{\frac{m({{k}_{1}}+{{k}_{2}})}{{{k}_{1}}{{k}_{2}}}}\]

C)

\[T=2\pi \sqrt{\frac{m}{{{k}_{1}}+{{k}_{2}}}}\]

D)

\[T=2\pi \sqrt{\frac{m({{k}_{1}}+{{k}_{2}})}{2{{k}_{1}}{{k}_{2}}}}\]

View Answer
2) A hot body at temperature T losses heat to the surrounding temperature Ts by radiation. If the difference in temperature is small then, the rate of loss of heat by the hot body is proportional to

A)

\[(T-Ts)\]

B)

\[{{(TTs)}^{2}}\]

C)

\[{{(T-{{T}_{s}})}^{1/2}}\]

D)

\[{{(T-{{T}_{s}})}^{4}}\]

View Answer
3) Which one of the following statement is not correct in the case of light emitting diodes?

A)

It is a heavily doped p-n junction

B)

It emits light only when it is forward biased

C)

It emits light only when it is reverse biased

D)

The energy of the light emitted is less than the energy of the semiconductor used

View Answer
4) Which one of the following cannot be used as a moderator in a nuclear reactor?

A)

Water

B)

Heavy water

C)

Molten sodium

D)

Graphite

View Answer
5) The fraction of a sample of radioactive nuclei that remains undecayed after one mean life is

A)

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

B)

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

C)

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

D)

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

View Answer
6) If the radius of a nucleus of mass number 3 is R, then the radius of a nucleus of mass number 81 is

A)

3 R

B)

9R

C)

\[{{(27)}^{1/2}}R\]

D)

25R

View Answer
7) In hydrogen atom, which one of the following transitions is most energetic?

A)

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

B)

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

C)

\[{{n}_{1}}=10\to {{n}_{2}}=2\]

D)

\[{{n}_{1}}=100\to {{n}_{2}}=3\]

View Answer
8) A common example of \[{{\beta }^{-}}\] decay is \[_{15}{{p}^{32}}{{\to }_{16}}{{S}^{32}}+x+y.\]Then x and y stand for

A)

electron and neutrino

B)

positron and neutrino

C)

electron and antineutrino

D)

positron and antineutrino

View Answer
9) Based on the energy band description, a solid can be classified as insulator the energy gap between the valance band and conduction band is

A)

\[3eV<{{E}_{g}}<6ev\]

B)

\[{{E}_{g}}>6eV\]

C)

\[{{E}_{g}}<3eV\]

D)

\[{{E}_{g}}=0eV\]

View Answer
10) In the diagram, a system of two metals of equal lengths and of same cross-sectional area are joined together. The coefficient of thermal conductivities of the metals are K and 2K respectively. If the furnace temperature at one end is \[300{}^\circ C\] and ice box temperature at the other end is \[0{}^\circ C\], then the junction temperature is

A)

\[100{}^\circ C\]

B)

\[125{}^\circ C\]

C)

\[150{}^\circ C\]

D)

\[200{}^\circ C\]

View Answer
11) A Carnot cycle has the reversible processes in the following order

A)

isothermal expansion, adiabatic expansion, isothermal compression and adiabatic compression

B)

isothermal compression, adiabatic expansion, isothermal expansion and adiabatic compression

C)

isothermal expansion, adiabatic compression, isothermal compression and adiabatic expansion

D)

adiabatic expansion, isothermal expansion, adiabatic compression and isothermal compression

View Answer
12) Through which mode of propagation, the radio waves can be sent from one place to another

A)

ground wave propagation

B)

sky wave propagation

C)

space wave propagation

D)

All of them

View Answer
13) The logic operation carried out by the circuit below is that of

A)

AND gate

B)

OR gate

C)

NOT gate

D)

NAND gate

View Answer
14) If \[\beta ,{{R}_{L}}\]and r are the AC current gain, load resistance and the input resistance of a transistor respectively in CE configuration, the voltage and the power gains respectively are

A)

\[\beta \frac{{{R}_{L}}}{r}and{{\beta }^{2}}\frac{{{R}_{L}}}{r}\]

B)

\[\beta \frac{r}{{{R}_{L}}}and{{\beta }^{2}}\frac{{{r}_{{}}}}{{{R}_{L}}}\]

C)

\[\beta \frac{{{R}_{L}}}{r}and\beta {{\left( \frac{{{R}_{L}}}{r} \right)}^{2}}\]

D)

\[\beta \frac{{{R}_{L}}}{r}and\beta {{\left( \frac{{{R}_{L}}}{r} \right)}^{2}}\]

View Answer
15) A message signal of frequency 5 kHz and peak voltage 10 V is used to amplify modulate a carrier wave with frequency 1 MHz and peak voltage 20 V. The side bands produced are

A)

\[\text{(}1000\pm 5\text{) }kHz\]

B)

\[(1000\pm 7.5)kHz\]

C)

\[\text{(}1000+~10\text{) }kHz\]

D)

\[(1000\pm 15)kHz\]

View Answer
16) The volume of one mole of an ideal gas changes from V to 2 V at temperature 327°C. If R is the universal gas constant, then the work done in this process is

A)

300 R In 2

B)

600 R In 2

C)

300 In 2

D)

600 In 2

View Answer
17) A wooden piece can float both in mercury (of density 13.6 g/cc) and in water (of density g/cc). The ratio of mass of mercury displaced to the mass of water displaced is

A)

1

B)

13.6

C)

\[\frac{1}{13.6}\]

D)

\[\frac{12.6}{13.6}\]

View Answer
18) A container of height 10 m which is open at the top, has water to its full height. Two small openings are made on the wall of the container one exactly at the middle and the other at the bottom. The ratio of the velocities with which water comes out from the middle and the bottom region respectively is

A)

2

B)

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

C)

\[\sqrt{2}\]

D)

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

View Answer
19) If the radius of a spherical liquid (of surface tension S) drop increases from r to r + \[\Delta \]r, the corresponding increase in the surface energy is

A)

\[8\pi r\Delta rS\]

B)

\[4\pi r\Delta rS\]

C)

\[16\pi r\Delta rS\]

D)

\[2\pi r\Delta rS\]

View Answer
20) Which one of the following is not an assumption in the kinetic theory of gases?

A)

The volume occupied by the molecules of the gas is negligible

B)

The force of attraction between the molecules is negligible

C)

The collision between molecules are elastic

D)

All molecules have some speed

View Answer
21) The crystal structure can be studied using

A)

UV rays

B)

X-rays

C)

IR radiation

D)

Microwave

View Answer
22) The number of turns of the primary and the secondary coils of a transformer are 10 and 100 respectively. The primary voltage and the current are given as 2 V and 1 A. Assuming the efficiency of the transformer as 90%, the secondary voltage and the current respectively are

A)

20 V and 0.1 A

B)

0.2 V and 1 A

C)

20 V and 0.09 A

D)

0.2 V and 0.9 A

View Answer
23) Which one of the following units is not that of mutual inductance?

A)

Henry

B)

Weber

C)

Ohm-second

D)

Volt-second-(ampere)-1

View Answer
24) In an L-C-R series AC circuit at resonance

A)

the capacitive reactance is more than the inductive reactance

B)

the capacitive reactance equals the inductive reactance

C)

the capacitive reactance is less than the inductive reactance

D)

the power dissipated is minimum

View Answer
25) In an L-C-R serries resonant circuit which one of the following cannot be the expression for the Q-factor

A)

\[\frac{\omega L}{R}\]

B)

\[\frac{1}{\omega CR}\]

C)

\[\sqrt{\frac{L}{C}\,\frac{1}{R}}\]

D)

\[\frac{R}{LC}\]

View Answer
26) If the eighth bright band due to light of wavelength \[{{\lambda }_{1}}\]coincides with ninth bright band from light of wavelength \[{{\lambda }_{2}}\] in Youngs double slit experiment, then the possible wavelengths of visible light are

A)

400 nm and 450 nm

B)

425 nm and 400 nm

C)

400 nm and 425 nm

D)

450 nm and 400 nm

View Answer
27) The elastic energy stored per unit volume in a stretched wire is

A)

\[\frac{1}{2}\]- (Young modulus) (Strain)2

B)

\[\frac{1}{2}\]- (Stress) (Strain)2

C)

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

D)

\[\frac{1}{2}\]- (Young modulus) (Stress)

View Answer
28) The electromagnetic waves of frequency 2 MHz to 30 MHz are used

A)

in ground wave propagation

B)

in sky wave propagation

C)

in microwave propagation

D)

in satellite communication

View Answer
29) Assuming that the earth is a sphere of radius RE with uniform density, the distance from its centre at which the acceleration due to gravity a is equal to \[\frac{g}{3}\](g = the acceleration due to gravity on the surface of earth) is

A)

\[\frac{{{R}_{E}}}{3}\]

B)

\[2\frac{{{R}_{E}}}{3}\]

C)

\[\frac{{{R}_{E}}}{2}\]

D)

\[\frac{{{R}_{E}}}{4}\]

View Answer
30) The terminal velocity of a rain drop of radius r is \[2cm\text{ }{{s}^{-1}}.\] If eight such identical drops combine to form a single large      drop,     the terminal velocity would be

A)

\[1\text{ }cm\text{ }{{s}^{-1}}\]

B)

\[2\text{ }cm\text{ }{{s}^{-1}}\]

C)

\[4\text{ }cm\text{ }{{s}^{-1}}\]

D)

\[8\text{ }cm\text{ }{{s}^{-1}}\]

View Answer
31) The maximum kinetic energy of photoelectrons

A)

varies linearly with the frequency of the incident radiation

B)

varies linearly with the wavelength of incident light

C)

proportional to the frequency of the incident radiation

D)

proportional to the square of the frequency of incident radiation

View Answer
32) Which one of the following is not associated with the total internal reflection?

A)

The mirage formation

B)

Optical fibre communication

C)

The glittering of diamond

D)

Dispersion of light

View Answer
33) The angular width of the central maximum of the diffraction pattern in a single slit (of width a) experiment, with \[\lambda \] as the wavelength of light, is

A)

\[\frac{3\lambda }{2a}\]

B)

\[\frac{\lambda }{2a}\]

C)

\[\frac{2\lambda }{a}\]

D)

\[\frac{\lambda }{a}\]

View Answer
34) The Brewster angle for the glass-air interface is \[54.74{}^\circ \]. If a ray of light going from air to glass strikes at an angle of incidence \[45{}^\circ \], then the angle of refraction is (Given, tan \[54.74{}^\circ \]= \[\sqrt{2}\])

A)

\[60{}^\circ \]

B)

\[30{}^\circ \]

C)

\[25{}^\circ \]

D)

\[54.74{}^\circ \]

View Answer
35) When sun light is scattered by minute particles of atmosphere, the intensity of light scattered away is proportional to

A)

(wavelength of light)4

B)

(frequency of light)4

C)

(wavelength of light)2

D)

(frequency of light)2

View Answer
36) If K be the kinetic energy and m the mass of a moving particle, then the de-Broglie wavelength of the particle is

A)

\[\lambda =\frac{h}{\sqrt{mk}}\]

B)

\[\lambda =\frac{2h}{\sqrt{mk}}\]

C)

\[\lambda =\frac{h}{2\sqrt{mk}}\]

D)

\[\lambda =\frac{h}{\sqrt{2mk}}\]

View Answer
37) The radius of gyration of a thin uniform circular disc (of radius R) about an axis passing through its centre and lying in its plane is

A)

R

B)

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

C)

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

D)

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

View Answer
38) Two particles of masses 1 kg and 2 kg are located at \[{{x}_{1}}=0,{{y}_{1}}=0\,\,and\,\,\,{{x}_{2}}=1,{{y}_{2}}=0\] respectively. The centre of mass of the system is at

A)

\[x=1;\,\,\,y=2\]

B)

\[x=2;\,\,\,y=1\]

C)

\[x=\frac{1}{3};\,\,y\frac{2}{3}\]

D)

\[x=\frac{2}{3};\,\,y\frac{1}{3}\]

E)

                (e) None of the above

View Answer
39) The energy that is associated with one gram of mass is

A)

\[9\times {{10}^{-13}}J\]

B)

\[9\times {{10}^{-16}}J\]

C)

\[9\times 1013\text{ }J\]

D)

\[9\times {{10}^{16}}J\]

View Answer
40) If the polar ice caps were to melt suddenly

A)

the length of the day will be more than 24 h

B)

the length of the day will be less than 24 h

C)

the length of the day will remain as 24 h

D)

the length of the day will become more than 24 h initially and then becomes equal to 24 h

View Answer
41) The work done in taking an object of mass m from the surface of earth to a height h = R, where R is the radius of the earth, is

A)

mgR

B)

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

C)

\[\frac{1}{3}mgR\]

D)

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

View Answer
42) The inversion temperature of a copper-iron thermocouple is \[540{}^\circ C\] when the cold junction temperature is \[0{}^\circ C\]. If the cold junction temperature is increased by \[10{}^\circ C\], then the inversion temperature and the neutral temperature of the thermocouple respectively are

A)

\[270{}^\circ C\text{ } and \text{ }530{}^\circ C\]

B)

\[270{}^\circ C\text{ } and \text{ }550{}^\circ C\]

C)

\[280{}^\circ C\text{ } and \text{ }530{}^\circ C\]

D)

\[280{}^\circ C\text{ } and \text{ }550{}^\circ C\]

View Answer
43) Two bulbs marked 60 W, 220 V and 100 W, 220 V are connected in series and the series combination is now connected across a 220 V mains supply. The power dissipated in the circuit is

A)

37.5 W

B)

75 W

C)

80 W

D)

40 W

View Answer
44) The steady state current through the battery in the circuit given below is

A)

17A

B)

7A

C)

zero

D)

\[\frac{10}{7}A\]

View Answer
45) Two concentric circular loops of radii R and 2R carry currents of 2i and i respectively in opposite sense (ie, clockwise in one coil and counter-clockwise in the other coil). The resultant magnetic field at their common centre is

A)

\[{{\mu }_{0}}\frac{i}{4R}\]

B)

\[{{\mu }_{0}}\frac{5i}{4R}\]

C)

\[{{\mu }_{0}}\frac{3i}{4R}\]

D)

\[{{\mu }_{0}}\frac{i}{2R}\]

View Answer
46) Three identical spherical balls A, B and C are placed on a table as shown in the figure along a straight line. B and C are at rest initially. The ball A hits B head on with a speed of \[10\text{ }m{{s}^{-1}}.\] Then after all collisions (assumed to be elastic) A and B are brought to rest and C takes off with a velocity of

A)

\[5m{{s}^{-1}}\]

B)

\[10m{{s}^{-1}}\]

C)

\[2.5m{{s}^{-1}}\]

D)

\[7.5m{{s}^{-1}}\]

View Answer
47) An object placed on an inclined plane starts sliding when the angle of incline becomes 30°. The coefficient of static friction between the object and the plane is

A)

\[\frac{1}{\sqrt{3}}\]

B)

\[\sqrt{3}\]

C)

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

D)

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

View Answer
48) Given below is a graph between a variable force (F) (along y-axis) and the displacement (x) (along x-axis) of a particle in one dimension. The work done by the force in the displacement interval between 0 m and 30 m is

A)

275 J

B)

375 J

C)

400 J

D)

300 J

View Answer
49) The mobility of free electrons (charge = e, mass = m and relaxation time = x) in a metal is proportional to

A)

\[\frac{e}{m}\tau \]

B)

\[\frac{m}{e}\tau \]

C)

\[\frac{e}{m\tau }\]

D)

\[\frac{m}{e\tau }\]

View Answer
50) n identical capacitors each of capacitance C when connected in parallel give the effective capacitance 90 \[\mu F\]and when connected in series give 2.5\[\mu F\] Then the values of n and C respectively are

A)

6 and 15 \[\mu F\]

B)

5 and 18 \[\mu F\]

C)

15 and 6 \[\mu F\]

D)

18 and 5 \[\mu F\]

View Answer
51) A capacitor is charged by a battery and the energy stored is U. The battery is now removed and the separation distance between the plates is doubled. The energy stored now is

A)

\[\frac{u}{2}\]

B)

U

C)

2 U

D)

4U

View Answer
52) The number of ways one can arrange three identical capacitors to obtain distinct effective capacitances is

A)

8

B)

6

C)

4

D)

3

View Answer
53) When a uniform wire of resistance R is stretched uniformly to increase its length by 10%, the new resistance value would

A)

remain as R

B)

become 1.21 R

C)

become 1.10 R

D)

become 1.20 R

View Answer
54) Rocket propulsion is associated with

A)

the conservation of angular momentum

B)

the conservation of mass

C)

the conservation of mechanical energy

D)

Newtons third law of motion

View Answer
55) Which one of the following statements is not correct in uniform circular motion?

A)

The speed of the particle remains constant

B)

The acceleration always points towards the centre

C)

The angular speed remains constant

D)

The velocity remains constant

View Answer
56) If a car is to travel with a speed v along a frictionless, banked circular track of radius r, the required angle of banking so that the car does skid, is

A)

\[\theta ={{\tan }^{-1}}\left( \frac{{{v}^{2}}}{rg} \right)\]

B)

\[\theta ={{\tan }^{-1}}\left( \frac{v}{rg} \right)\]

C)

\[\theta ={{\tan }^{-1}}\left( \frac{{{r}^{2}}}{vg} \right)\]

D)

\[\theta <{{\tan }^{-1}}\left( \frac{{{v}^{2}}}{vg} \right)\]

View Answer
57) Three forces \[{{F}_{1}}{{F}_{2}}\]and \[{{F}_{3}}\]together keep a body in equilibrium. If \[{{F}_{1}}=\text{ }3\text{ }N\]along the positive x-axis, \[{{F}_{2}}=\text{ }4\text{ }N\]along the positive y-axis, then the third force \[{{F}_{3}}\]is

A)

5 N making an angle \[\theta ={{\tan }^{-1}}\left( \frac{3}{4} \right)\]with the negative y-axis

B)

5 N making an angle \[\theta ={{\tan }^{-1}}\left( \frac{4}{3} \right)\]with the negative y-axis

C)

7 N making an angle \[\theta ={{\tan }^{-1}}\left( \frac{3}{4} \right)\] with the negative y-axis

D)

7 N making an angle \[\theta ={{\tan }^{-1}}\left( \frac{4}{3} \right)\] with the negative y-axis

View Answer
58) The electrostatic potential of a uniformly charged thin spherical shell of charge Q and radius R at a distance r from the centre is

A)

\[\frac{Q}{4\pi {{\varepsilon }_{0}}r}\]for points outside and \[\frac{Q}{4\pi {{\varepsilon }_{0}}R}\]points inside the shell

B)

\[\frac{Q}{4\pi {{\varepsilon }_{0}}r}\]for both points inside and outside the shell

C)

zero for points outside and\[\frac{Q}{4\pi {{\varepsilon }_{0}}r}\]for points inside the shell

D)

zero for both points inside and outside the shell

View Answer
59) The electric field and the potential of an electric dipole vary with distance r as

A)

\[\frac{1}{r}and\frac{1}{{{r}^{2}}}\]

B)

\[\frac{1}{{{r}^{2}}}and\frac{1}{r}\]

C)

\[\frac{1}{{{r}^{2}}}and\frac{1}{{{r}^{3}}}\]

D)

\[\frac{1}{{{r}^{3}}}and\frac{1}{{{r}^{2}}}\]

View Answer
60) A point charge Q is placed at one of the vertices of a cubical block. The electric flux flowing through this cube is

A)

\[\frac{Q}{6{{\varepsilon }_{0}}}\]

B)

\[\frac{Q}{4{{\varepsilon }_{0}}}\]

C)

\[\frac{Q}{8{{\varepsilon }_{0}}}\]

D)

\[\frac{Q}{{{\varepsilon }_{0}}}\]

View Answer
61) Two parallel infinite line charges + X and - X are placed with a separation distance R in free space. The net electric field exactly mid-way between the two line charges is

A)

zero

B)

\[\frac{2\lambda }{\pi {{\varepsilon }_{0}}R}\]

C)

\[\frac{\lambda }{\pi {{\varepsilon }_{0}}R}\]

D)

\[\frac{1}{2\pi {{\varepsilon }_{0}}R}\]

View Answer
62) A particle is thrown vertically up with a certain velocity. Assuming the air resistance to be negligible, which one of the following represents the velocity (along y-axis) time (along x-axis) graph for the entire motion of the particle till it reaches back to the ground

A)

B)

C)

D)

View Answer
63) The dimensions of the coefficient of viscosity are

A)

\[\left[ M{{L}^{-1}}{{T}^{-3}}\left. {} \right] \right.\]

B)

\[\left[ M{{L}^{-2}}{{T}^{-3}}\left. {} \right] \right.\]

C)

\[\left[ M{{L}^{-2}}{{T}^{-1}}\left. {} \right] \right.\]

D)

\[\left[ ML{{T}^{-1}}\left. {} \right] \right.\]

View Answer
64) The components of the sum of two vectors \[2\hat{i}+3\hat{J}\] and \[2\hat{J}+3\hat{k}\] along x and y directions respectively are

A)

2 and 5

B)

4 and 6

C)

2 and 6

D)

4 and 3

View Answer
65) An object is projected so that its horizontal range R is maximum. If the maximum height attained by the object is H, then the ratio of R/H is

A)

4

B)

¼

C)

2

D)

1/2

View Answer
66) Which one of the following is not a characteristics of diamagnetism?

A)

The diamagnetic materials are repelled by a bar magnet

B)

The magnetic susceptibility of the materials is small and negative

C)

The origin of diamagnetism is the spin of electrons

D)

The material move from a region of strong magnetic field to weak magnetic field

View Answer
67) When the number of turns of the coil is doubled, the current sensitivity of a moving coil galvanometer is doubled whereas, the voltage sensitivity of the galvanometer

A)

remains the same

B)

is halved

C)

is doubled

D)

is quadrupled

View Answer
68) Amperes circuital law is equivalent to

A)

Biot-Savart law

B)

Coulombs law

C)

Faradays law

D)

Kirchoffs law

View Answer
69) A proton, a deuteron and an alpha particle all having same momenta enter a uniform magnetic field and describe circular paths. The respective radii of their paths are in the ratio

A)

4 : 2 : 1

B)

2 : 2 : 1

C)

1 : 2 : 4

D)

1 : 1 : 1

View Answer
70) If the horizontal component of the earths magnetic field is 0.30 G, and the dip angle is \[60{}^\circ \] at a given place, then the value of earths total magnetic field is

A)

0.15 G

B)

0.15 \[\sqrt{3}\] G

C)

0.15\[\sqrt{2}\]G

D)

0.60 G

View Answer
71) If a current of 5 A in a coil of self inductance 2 mH is cut-off in time 0.1 s, the induced emf in the coil is

A)

0.1 V

B)

0.01 V

C)

0.2 V

D)

0.02 V

View Answer
72) A source of sound is approaching an observer with speed of 30 ms-1 and the observer is approaching the source with a speed of 60 ms-1. Then the fractional change in the frequency of sound (speed of sound in air\[=330\text{ }m{{s}^{-1}}\]) is

A)

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

B)

\[\frac{3}{10}\]

C)

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

D)

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

View Answer
73) A wave motion is described by y (x, t) = a sin (kx - \[\omega t\]). Then the ratio of the maximum particle velocity to the wave velocity is

A)

\[\omega a\]

B)

\[\frac{1}{ka}\]

C)

\[\frac{\omega }{k}\]

D)

ka

View Answer
74) The equation of a damped simple harmonic \[m\frac{{{d}^{2}}x}{d{{t}^{2}}}+b\frac{dx}{dt}+kx=o.\]motion is angular frequency of oscillation is

A)

\[\omega {{\left( \frac{k}{m}-\frac{{{b}^{2}}}{4{{m}^{2}}} \right)}^{1/2}}\]

B)

\[\omega {{\left( \frac{k}{m}-\frac{b}{4m} \right)}^{1/2}}\]

C)

\[\omega {{\left( \frac{k}{m}-\frac{{{b}^{2}}}{4m} \right)}^{1/2}}\]

D)

\[\omega {{\left( \frac{k}{m}-\frac{{{b}^{2}}}{4{{m}^{2}}} \right)}^{1/2}}\]

View Answer
75) The fundamental frequencies of an open and a closed tube, each of same length L with v as the speed of sound in air, respectively are

A)

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

B)

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

C)

\[\frac{v}{2L}and\frac{v}{4L}\]

D)

\[\frac{v}{4L}and\frac{v}{2L}\]

View Answer
76) For the reaction, \[{{N}_{2}}(g)+3{{H}_{2}}(g)2N{{H}_{3}}(g)\] at 400 K,\[{{K}_{p}}=41\]. Find the value for the following reaction \[\frac{1}{2}{{N}_{2}}(g)+\frac{3}{2}{{H}_{2}}(g)N{{H}_{3}}(g)\]

A)

6.4

B)

0.02

C)

50

D)

4.6

View Answer
77) What will be the resultant pH when 200 mL of an aqueous solution of\[HCl\]\[(pH=2.0)\]is mixed with 300 mL of an aqueous solution of\[NaOH\]\[(pH=12)\]?

A)

2.699

B)

13.30

C)

11.3010

D)

1.330

View Answer
78) Why do most chemical reaction rates increases rapidly as the temperature rises?

A)

The fraction of the molecules with kinetic energy greater than the activation energy increases rapidly with temperature

B)

The average kinetic energy increases as temperature rises

C)

The activation energy decreases as the temperature rises

D)

More collision take place between particles so that the reaction can occur

View Answer
79) To an equilibrium mixture of\[2S{{O}_{2}}(g)+{{O}_{2}}(g)2S{{O}_{3}}(g),\]some helium, an inert gas, is added at constant volume. The addition of helium causes the total pressure to double, which of the following is true?

A)

The concentration of all three gases is unchanged

B)

The concentration of sulphur trioxide increases

C)

The number of moles of sulphur trioxide increases

D)

The concentration of sulphur dioxide increases

View Answer
80) Identify the substance whose 0.1 M solution is basic?

A)

Ammonium chloride

B)

Ammonium acetate

C)

Ammonium sulphate

D)

Sodium acetate

View Answer
81) The vapour pressure of pure liquid solvent is 0.80 atm. When a non-volatile substance B is added to the solvent, its vapour pressure drops to 0.6 atm. What is the mole fraction of component B in this solution?

A)

0.75

B)

0.25

C)

0.48

D)

0.3

View Answer
82) The standard enthalpy of formation of\[{{H}_{2}}(g)\] and\[C{{l}_{2}}(g)\]and\[HCl(g)\]are 218 kJ/mol, 121.68 kJ/mol and\[-92.31\text{ }kJ/mol\]respectively. Calculate standard enthalpy change in kJ for \[\frac{1}{2}{{H}_{2}}(g)+\frac{1}{2}C{{l}_{2}}(g)\xrightarrow{{}}HCl(g)\]

A)

\[+\,431.99\]

B)

\[-\,246.37\]

C)

\[-\,431.99\]

D)

\[+\,247.37\]

E)

None of the above

View Answer
83) In which of the following pair the enthalpy of neutralization does not remain constant?

A)

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

B)

\[HCl\]and\[NaOH\]

C)

HCN and\[NaOH\]

D)

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

View Answer
84) A system is changed from an initial state to a final state by a manner such that\[\Delta H=q\]. If the change from the initial state to the final state were made by a different manner then \[\Delta H\]remains same but q changes because

A)

\[\Delta H\]is a path function and q is a state function

B)

\[\Delta H\]is a state function and q is a path function

C)

Both\[\Delta H\]and q are state function

D)

Both\[\Delta H\]and q are path function

View Answer
85) When water is cooled to ice, its entropy

A)

increases

B)

decreases

C)

remains same

D)

becomes zero

View Answer
86) The charge on\[Fe{{(OH)}_{3}}\]sol is due to

A)

adsorption of hydroxyl ion

B)

adsorption of hydrogen ion

C)

adsorption of ferric ion

D)

absorption of ferric ion

View Answer
87) Which of the following statement is true?

A)

Chemisorption forms multimolecular layer

B)

Chemisorption is a reversible process

C)

Chemisorption is independent of the pressure

D)

Chemisorption has low enthalpy change

View Answer
88) Identify the incorrect statement out of the following.

A)

Isoelectronic species have dissimilar ionic radii

B)

Be and Al does not show diagonal relationship

C)

Outer electronic configuration of halogen is\[n{{s}^{2}}.n{{p}^{7}}\]

D)

In any period atomic radius of noble gas is the highest

View Answer
89) According to VSEPR theory, the molecule that has T-shape is

A)

\[CI{{F}_{3}}\]

B)

\[N{{H}_{3}}\]

C)

\[B{{F}_{3}}\]

D)

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

View Answer
90) Bakelite is the polymer of

A)

benzaldehyde and phenol

B)

formaldehyde and phenol

C)

formaldehyde and benzyl alcohol

D)

acetaldehyde and phenol

View Answer
91) Which of these elements is expected to have the lowest first ionisation potential?

A)

\[Sr\]

B)

\[As\]

C)

\[Xe\]

D)

\[S\]

View Answer
92) Which is false statement about LCAO?

A)

Addition of atomic orbital results in molecular orbital

B)

Atomic orbital of nearly same energy combine to molecular orbital

C)

Bonding molecular orbital occupies higher energy than the atomic orbitals

D)

Each molecular orbital accommodate maximum of two electrons

View Answer
93) Which one among the following statement about transition elements is incorrect?

A)

They show variable oxidation state

B)

All the ions are coloured

C)

They exhibit diamagnetic and paramagnetic properties

D)

They exhibit catalytic properties

View Answer
94) German silver is an alloy of

A)

copper, zinc and silver

B)

copper, zinc and nickel

C)

copper, zinc and tin

D)

manganese, chromium and nickel

View Answer
95) The metal-carbon bond in metal carbonyls possess

A)

only s character

B)

only p character

C)

both s and p character

D)

only d character

View Answer
96) Irregular trend in the standard reduction potential value of first row transition elements is due to

A)

regular variation of first and second ionisation enthalpies

B)

irregular variation of sublimation enthalpies

C)

regular variation of sublimation enthalpies

D)

increase in the number of unpaired electrons

View Answer
97) Which of the following lanthanoid ion is paramagnetic?

A)

\[C{{e}^{4+}}\]

B)

\[Y{{b}^{2+}}\]

C)

\[L{{u}^{3+}}\]

D)

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

View Answer
98) The complex\[{{[Co{{F}_{6}}]}^{4-}}\]is

A)

outer orbital and diamagnetic

B)

inner orbital and paramagnetic

C)

inner orbital and diamagnetic

D)

outer orbital and paramagnetic

View Answer
99) The oxidation number, d-orbital occupation and coordination number of Cr in the complex cis\[[Cr{{(en)}_{2}}C{{l}_{2}}]Cl\]are respectively

A)

+3, 3d and 4

B)

+3, 4d and 6

C)

+3, 3d and 6

D)

+2, 3d and 6

View Answer
100) Which is a non-aromatic compound?

A)

B)

C)

D)

View Answer
101) The number of isomers including stereoisomers possible for the compound having molecular formula\[{{C}_{4}}{{H}_{8}}\]is

A)

one

B)

two

C)

three

D)

four

View Answer
102) The correct order of decreasing acidic nature of\[{{H}_{2}}O,\text{ }ROH,\text{ }CH\equiv CH\]and\[N{{H}_{3}}\]is

A)

\[CH\equiv CH>{{H}_{2}}O>ROH>N{{H}_{3}}\]

B)

\[{{H}_{2}}O>ROH>CH=CH>N{{H}_{3}}\]

C)

\[ROH>N{{H}_{3}}>CH\equiv CH>{{H}_{2}}O\]

D)

\[{{H}_{2}}O>ROH>N{{H}_{3}}>CH\equiv CH\]

View Answer
103) Reaction between propene and hydrochloric acid to form iso-propyi chloride takes place through

A)

nucleophilic addition reaction

B)

electrophilic substitution reaction

C)

nucleophilic substitution reaction

D)

electrophilic addition reaction

View Answer
104) Stability of iso-butylene can be best explained by

A)

inductive effect

B)

mesomeric effect

C)

hyper conjugative effect

D)

steric effect

View Answer
105) The d and\[l\]enantiomers of an optically active compound differ in

A)

their boiling and melting point

B)

their rotation of plane polarized light

C)

their solubility

D)

their refractive index

View Answer
106) Cannizaro reaction is not given by

A)

methanol

B)

phenyl methanol

C)

2,2-dimethyl butanal

D)

phenyl ethanol

View Answer
107) Which of the following compound will have the smallest\[p{{K}_{a}}\]value?

A)

Benzoic acid

B)

Formic acid

C)

Acetic acid

D)

Phenyl acetic acid

View Answer
108) Ethyl alcohol cannot be used as a solvent for methyl magnesium iodide because

A)

methyl magnesium iodide reacts with alcohol giving methane

B)

the reaction between them is explosive in nature

C)

methyl magnesium iodide is converted to ethyl magnesium iodide

D)

alcohol is immiscible with methyl magnesium iodide

View Answer
109) Which is not true about acetophenone?

A)

It reacts with alkaline potassium permanganate followed by acid hydrolysis and forms benzoic acid

B)

It reacts with iodine and sodium hydroxide to form tri-iodomethane

C)

It is prepared by the reaction of benzene with benzoyl chloride in presence of anhydrous aluminium chloride

D)

It does not react with freshly prepared ammoniacal silver nitrate solution

View Answer
110) Formation of methyl tertiary butyl ether by he reaction of sodium tertiary butoxide and methyl bromide involves

A)

elimination reaction

B)

electrophilic addition reaction

C)

nucleophilic substitution unimolecular reaction

D)

nucleophilic substitution bimolecular reaction

View Answer
111) 10 g of a radioisotope is reduced to 1.25 g of active material after 12 yr. Therefore, the half-life of the isotope (in yr) is

A)

24

B)

4

C)

2

D)

8

View Answer
112) Out of the following, which is the correct set of quantum number for the outermost electron of potassium atom (Z = 19)?

A)

                \[n\]      \[l\]        \[m\]     \[s\]                 4              3              2              -1/2

B)

                4              2              0              -1/2

C)

                4              1              0              +1/2

D)

                4              0              0              -1/2

View Answer
113) The molecules present in 5.6 L of sulphur dioxide at STP is

A)

\[1.5\times {{10}^{23}}\]

B)

\[1.5\times {{10}^{-23}}\]

C)

\[4\times {{10}^{23}}\]

D)

\[0.15\times {{10}^{23}}\]

View Answer
114) What is the relationship between the parent and daughter nuclei, when a nucleus of an atom undergoes beta emission?

A)

Isobars

B)

Isotopes

C)

Isotones

D)

Isomers

View Answer
115) In photoelectric effect, the kinetic energy of the photoelectron increases linearly with the

A)

wavelength of the incident light

B)

frequency of the incident light

C)

velocity of the incident light

D)

atomic mass of an element

View Answer
116) Dual behaviour of matter was proposed by

A)

Niels Bohr

B)

Erwin Schrodinger

C)

Louis de-Broglie

D)

Max Planck

View Answer
117) What is the maximum number of emission lines obtained when the excited electron of a hydrogen atom in\[n=5\]drops to the ground state?

A)

10

B)

5

C)

12

D)

15

View Answer
118) For a reaction\[[R]\xrightarrow[{}]{{}}P\]a graph of [R] against time is found to be a straight line. What is the order of this reaction?

A)

Second order

B)

Third order

C)

First order

D)

Zero order

View Answer
119) For getting accurate value of molar mass of a solute by osmotic pressure measurement

A)

the solute must be volatile

B)

the Solution concentration must be high

C)

the solute should undergo dissociation

D)

the solute must be non-volatile

View Answer
120) In a catalytic experiment involving the Haber process,\[{{N}_{2}}(g)+3{{H}_{2}}(g)\xrightarrow{{}}2N{{H}_{3}}(g),\]the rate of reaction was measured as Rate =\[[N{{H}_{3}}]=2.0\times {{10}^{-4}}M{{s}^{-1}}\] If there were no side reactions what was the rate of reaction expressed in terms of\[{{N}_{2}}\]?

A)

\[1\times {{10}^{-4}}M{{s}^{-1}}\]

B)

\[4\times {{10}^{-4}}M{{s}^{-1}}\]

C)

\[5\times {{10}^{-3}}M{{s}^{-1}}\]

D)

\[1\times {{10}^{-3}}M{{s}^{-1}}\]

View Answer
121) For a dilute solution, Raoults law states that

A)

lowering of vapour pressure is equal to the mole fraction of the solute

B)

relative lowering of vapour pressure is equal to the mole fraction of the solvent

C)

relative lowering of vapour pressure of the solvent is equal to the mole fraction of the solute

D)

vapour pressure of the solution is equal to the vapour pressure of the solvent

View Answer
122) 36 g of glucose (molar mass = 180 g/mol) is present in 500 g of water, the molality of the solution is

A)

0.2

B)

0.4

C)

0.8

D)

1.0

View Answer
123) A certain current liberates 0.504 g hydrogen in 2 h. How many gram of oxygen can be liberated by the same current in the same time?

A)

2.0 g

B)

0.4 g

C)

4.0 g

D)

8.0 g

View Answer
124) The reduction potential values of X, Y and Z are \[-\text{ }3.05\text{ }V,~~-\text{ }0.44\text{ }V\]and\[-\text{ }0.83\text{ }V\]respectively. Which of the following order is correct with respect to their reducing property?

A)

\[X\text{ }>\text{ }Y\text{ }>\text{ }Z\]

B)

\[X\text{ }>\text{ }Z\text{ }>\text{ }Y\]

C)

\[Y\text{ }>\text{ }Z\text{ }>\text{ }X\]

D)

\[Z\text{ }>\text{ }Y\text{ }>\text{ }X\]

View Answer
125) Relationship between atomic radius r and the edge length a of a body centred cubic unit cell is

A)

\[r=\frac{a}{2}\]

B)

\[r=\sqrt{\frac{a}{2}}\]

C)

\[r=\frac{\sqrt{3}}{4}a\]

D)

\[r=\frac{3a}{2}\]

View Answer
126) Calculate the reduction potential of a half-cell containing of platinum electrode immersed in \[2.0\text{ }M\text{ }F{{e}^{2+}}\]and\[0.02\text{ }M\text{ }F{{e}^{3+}}\]. Given    \[E_{F{{e}^{3+}}/F{{e}^{2+}}}^{o}=0.771V,\] \[F{{e}^{3+}}+{{e}^{-}}\xrightarrow[{}]{{}}F{{e}^{2+}}\]

A)

0.653V

B)

0.889V

C)

0.0653V

D)

2.771V

View Answer
127) Faraday constant is defined as

A)

charge carried by one electron

B)

charge carried by one mole of electron

C)

charge required depositing one mole of substance

D)

charge carried by two moles of electron

View Answer
128) If 300 mL of a gas weighs 0.368 g at STP. What is its molecular weight?

A)

30.16

B)

2.55

C)

27.5

D)

37.5

View Answer
129) Which one of the following compound exhibit both Schottky and Frenkel defects?

A)

\[NaCl\]

B)

\[AgCl\]

C)

\[AgBr\]

D)

\[AgI\]

View Answer
130) Identify the molecule that has zero dipole moment.

A)

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

B)

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

C)

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

D)

\[CC{{l}_{4}}\]

View Answer
131) Which one statement about sulphur dioxide gas is incorrect?

A)

It has an angular shape

B)

It decolourises acidified potassium permanganate solution

C)

Two \[S-O\] bonds are equal

D)

It is a dehydrating agent

View Answer
132) In which of the following arrangement, the order is not according to the property indicated against it?

A)

\[{{F}_{2}}>C{{l}_{2}}>B{{r}_{2}}>{{I}_{2}}-\] Oxidising agent

B)

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

C)

\[F>Cl>Br>I\]Electron gain enthalpy

D)

\[C>Si>Ge>Sn\]Ability to formp-p bond

View Answer
133) In\[C{{O}_{2}},C{{H}_{4}}\]and\[CH_{3}^{+}\]the hybridisation of carbon atom are

A)

\[s{{p}^{2}},\text{ }s{{p}^{3}}\]and\[s{{p}^{2}}\]respectively

B)

\[sp,\text{ }s{{p}^{3}}\]and\[s{{p}^{2}}\]respectively

C)

\[sp,\text{ }s{{p}^{3}}\]and\[sp\]respectively

D)

\[s{{p}^{2}},\text{ }s{{p}^{3}}\]and\[sp\]respectively

View Answer
134) Why calcium ion makes water hard but sodium ion does not?

A)

Calcium forms insoluble compound with stearate ion present in soap

B)

Sodium forms insoluble compound with stearate ion present in soap

C)

Calcium forms soluble compound with stearate ion present in soap

D)

Both calcium and sodium forms insoluble compound with stearate ion present in soap

View Answer
135) The colorless gas that turns brown in air is

A)

\[NO\]

B)

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

C)

\[{{N}_{2}}{{O}_{4}}\]

D)

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

View Answer
136) IUPAC name of the complex\[{{K}_{3}}[Al{{({{C}_{2}}{{O}_{4}})}_{3}}]\]is

A)

potassium tris(oxalato)aluminate\[(III)\]

B)

potassium tri(oxalato)aluminate\[(III)\]

C)

potassium tris(oxalato) aluminium\[(III)\]

D)

potassium tri(oxalato) aluminium\[(III)\]

View Answer
137) The depressant used to separate lead sulphide and zinc sulphide ores is

A)

potassium cyanide

B)

sodium cyanide

C)

silver cyanide

D)

sodium sulphide

View Answer
138) IUPAC name of the compound

A)

1 -fluoro-4-methyl-2-nitrobenzene

B)

4-fluoro-1-methyl-3-nitrobenzene

C)

4-methyl-1 -fluoro-2-nitrobenzene

D)

5-methyl-2-fluoro-1 -nitrobenzene

View Answer
139) In the extraction of copper, the copper matte is a mixture of

A)

copper(II) sulphide and iron(II) sulphide

B)

copper (II) sulphide and iron (III) sulphide

C)

copper (I) sulphide and iron (II) sulphide

D)

copper(I) sulphide and iron(III) sulphide

View Answer
140) Silver halide which is readily soluble in ammonium chloride is

A)

silver chloride

B)

silver bromide

C)

silver fluoride

D)

silver iodide

View Answer
141) Which of the following reagent can be used to convert ethanamide to methanamine?

A)

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

B)

\[NaOBr\]

C)

\[LiAl{{H}_{4}}/{{H}_{2}}O\]

D)

\[Na(Hg)/{{C}_{2}}{{H}_{5}}OH\]

View Answer
142) Identify the product C in the series \[{{C}_{6}}{{H}_{5}}N{{O}_{2}}\xrightarrow[{}]{Fe/HCl}A\xrightarrow[273\,K]{NaN{{O}_{2}}+HCl}\]\[B\xrightarrow[283\,K]{{{H}_{2}}O}C\]

A)

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

B)

\[{{C}_{6}}{{H}_{5}}C{{H}_{2}}OH\]

C)

\[{{C}_{6}}{{H}_{5}}CHO\]

D)

\[{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]

View Answer
143) The class of drug used for the treatment of stress is

A)

analgesics

B)

antiseptic

C)

antihistamine

D)

tranquilizers

View Answer
144) Compound that has smell of bitter almonds is

A)

aniline

B)

benzonitrile

C)

phenyl isocyanide

D)

nitrobenzene

View Answer
145) Which of the following is the correct increasing order of basicity of amines in gaseous phase?

A)

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

B)

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

C)

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

D)

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

View Answer
146) Nitrogenous base that found in RNA but absent in DNA is

A)

uracil

B)

thymine

C)

cytosine

D)

adenine

View Answer
147) Glycerol when reacts with potassium hydrogen sulphate at 473 K - 503 K forms

A)

allyl iodide

B)

allyl alcohol

C)

glyceric acid

D)

acrolein

View Answer
148) Phenol reacts with bromine in chloroform at low temperature to give

A)

m-bromophenol

B)

mixture of ortho and para bromophenol

C)

p-bromophenol

D)

2,4,6-tribromophenol

View Answer
149) Identify the compound X in the following reaction

A)

B)

C)

D)

View Answer
150) Alkyl halides undergoing substitution nucleophilic bimolecular reaction involves

A)

formation of carbocation

B)

racemic mixture

C)

inversion of configuration

D)

retention of configuration

View Answer
151) The meristem that is parallel to the longitudinal axis of the plant is

A)

Procambium

B)

intercalary meristem

C)

phellogen

D)

apical meristem

View Answer
152) Spadix type of inflorescence is seen in

A)

banana

B)

mulberry

C)

oak

D)

coriander

View Answer
153) Incomplete dominance is demonstrated in

A)

Antirrhinum majus

B)

Pi sum sativum

C)

Hibiscus rosa sinensis

D)

Abutilon ind icum

View Answer
154) Which one of the following is a modified stem that performs photosynthesis?

A)

Tendrils

B)

Bulbils

C)

Phylloclades

D)

Prickles

View Answer
155) Rat poison is obtained from

A)

Urginea

B)

Lilium

C)

Asparagus

D)

Aloe vera

View Answer
156) Many phenotypic characters are controlled by

A)

pleiotropic gene

B)

polygenes

C)

hypostatic gene

D)

epistatic gene

View Answer
157) The hormone responsible for apical dominance is

A)

auxin

B)

gibberellins

C)

cytokinin

D)

ethylene

View Answer
158) The movement of water from higher water potential to lower water potential through a semi-permeable membrane is called

A)

osmosis

B)

diffusion

C)

plasmolysis

D)

imbibitions

View Answer
159) Seeds of winter varieties are benefited by this method.

A)

Senescence

B)

Abscission

C)

Photoperiodism

D)

Vernalisation

View Answer
160) The example for seismonasty is

A)

Mimosa pudica

B)

Samanea saman

C)

Albizia lebbek

D)

Hibiscus rosa sinensis

View Answer
161) In plants, chlorosis is caused by the deficiency of

A)

nitrogen

B)

manganese

C)

magnesium

D)

All of these

View Answer
162) In \[{{C}_{3}}-\]plants, photosynthesis occurs in

A)

bundle sheath cells

B)

peroxisome

C)

mesophyll cells

D)

Kranz anatomy

View Answer
163) Which one of the following is a bacterial biofertilizer?

A)

Anabaena

B)

Nostoc

C)

Rhizobium

D)

Oscillatoria

View Answer
164) Production of superior \[{{F}_{L}}\]hybrids is called

A)

inbreeding

B)

domestication

C)

emasculation

D)

heterosis

View Answer
165) The illegal and unlawful development of biomaterials without payment to the inhabitants of their origin is called

A)

biopatent

B)

biotechnology

C)

bio-war

D)

biopiracy

View Answer
166) The infectious and contagious bacterial disease that affects cattle, buffaloes, horses, sheeps and goats, is

A)

anthrax

B)

rinderpest

C)

tick fever

D)

necrosis

View Answer
167) The most abundant greenhouse gas is

A)

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

B)

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

C)

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

D)

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

View Answer
168) Pouch is seen in

A)

platypus

B)

bat

C)

lemur

D)

marsupials

View Answer
169) The truly land animals are

A)

newts

B)

lung-fishes

C)

salamanders

D)

Calotes

View Answer
170) Marasmus is caused by the deficiency of

A)

protein

B)

thiamin

C)

riboflavin

D)

niacin

View Answer
171) Which one of the following is not a flightless bird?

A)

Struthio

B)

Emu

C)

Psittacula

D)

Cassowary

View Answer
172) The process of conversion of excess glucose into glycogen is called

A)

glycolysis

B)

glycogenesis

C)

gluconeogenesis

D)

oogenesis

View Answer
173) The volume of air that is normally inspired and expired at every breath is called

A)

residual volume

B)

inspiratory reserve volume

C)

vital capacity

D)

tidal volume

View Answer
174) The branch of biology that deals with the study of the process of ageing is

A)

gynaecology

B)

senescence

C)

gerontology

D)

palaeontology

View Answer
175) The double helix model of DNA was proposed by

A)

Griffith

B)

Stinberg

C)

Watson and Crick

D)

Wilkins

View Answer
176) Clover leaf model of tRNA was suggested by

A)

Went

B)

Flemming

C)

Holley

D)

Messelson

View Answer
177) Fluid mosaic model of plasma membrane was proposed by

A)

Watson and Crick

B)

Alfonso Corti

C)

Robert Hooke

D)

Singer and Nicholson

View Answer
178) The width of DNA molecule is

A)

\[10\overset{\text{o}}{\mathop{\text{A}}}\,\]

B)

\[20\overset{\text{o}}{\mathop{\text{A}}}\,\]

C)

\[34\overset{\text{o}}{\mathop{\text{A}}}\,\]

D)

\[35\overset{\text{o}}{\mathop{\text{A}}}\,\]

View Answer
179) Okazaki fragments are linked by

A)

ligase

B)

primase

C)

topoisomerase

D)

DNA polymerase

View Answer
180) rnRNA carries the genetic information from DNA to the

A)

chloroplasts

B)

ribosomes

C)

mitochondria

D)

lysosomes

View Answer
181) Humans belong to the family

A)

Hominidae

B)

Pongidae

C)

Hylobatidae

D)

Ramapithecus

View Answer
182) Which one of the following is not an autoimmune disease?

A)

Graves disease

B)

Pernicious anaemia

C)

Rheumatoid arthritis

D)

Insomnia

View Answer
183) In which type of isolation, two species living in different habitats are prevented from interbreeding?

A)

Temporal

B)

Ecological

C)

Behavioural

D)

Gametic

View Answer
184) The branch of biology that deals with the study of fossil is

A)

anatomy

B)

embryology

C)

morphology

D)

palaeontology

View Answer
185) Vaccine against rabies was first developed by

A)

Edward Jenner

B)

George Snell

C)

Louis Pasteur

D)

Peter Goror

View Answer
186) The binomial system of nomenclature was first used by

A)

Caspary

B)

Carolus Linnaeus

C)

Camp and Gilly

D)

Gaspard Bauhin

View Answer
187) The pesticide that is used in the preparation of herbarium is

A)

2,4-dichlorophenoxy acetic acid

B)

NAA

C)

mercuric chloride

D)

carbon disulphide

View Answer
188) A group of individuals, which are able to breed among themselves and produce their own kind, is known as

A)

genus

B)

species

C)

family

D)

order

View Answer
189) The term biosystematics was coined by

A)

Gaspard Bauhin

B)

Camp and Gilly

C)

Karl Prantl

D)

Robert Brown

View Answer
190) The five kingdom system of classification was proposed by

A)

R H Whittaker

B)

Linnaeus

C)

Bentham and Hooker

D)

G Simpson

View Answer
191) Which of the following is considered as neither prokaryotes nor eukaryotes?

A)

Bacteriophages

B)

Bacteria

C)

Monera

D)

Fungi

View Answer
192) Vegetative propagation by leaves is seen in

A)

Murraya sp.

B)

Bryophyllum daigremontianum

C)

Albizia lebbek

D)

Dalbergia sissoo

View Answer
193) Pollination caused by wind is called

A)

hydrophily

B)

entomophily

C)

anemophily

D)

ornithophily

View Answer
194) Closure of stomata is caused by

A)

auxin

B)

ethylene

C)

cytokinin

D)

abscisic acid

View Answer
195) When pollens from one flower are deposited on the stigma of another flower born on the same plant, the type of pollination is known as

A)

allogamy

B)

geitonogamy

C)

xenogamy

D)

autogamy

View Answer
196) Falling of floral parts, leaves and fruits from the mother plant is called

A)

senescence

B)

abscission

C)

photoperiodism

D)

vernalisation

View Answer
197) The example of symbiotic bacterium is

A)

Nitrosococcus

B)

Nitrobacter

C)

Rhizobium

D)

cyanobacteria

View Answer
198) Parasitic phanerogams absorb water and solutes from the host plant by

A)

mycorrhizal roots

B)

clinging roots

C)

haustoria

D)

adventitious roots

View Answer
199) Photorespiration is otherwise called as

A)

\[{{C}_{2}}-\]cycle

B)

\[{{C}_{3}}-\]cycle

C)

\[{{C}_{4}}-\]cycle

D)

\[{{C}_{5}}-\]cycle

View Answer
200) Which one of the following is not an insectivorous plant?

A)

Monotropa

B)

Drosera

C)

Utricularia

D)

Nepenthes

View Answer
201) During cyclic electron transport, which one of the following is produced?

A)

ATP only

B)

Erythrose

C)

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

D)

None of these

View Answer
202) \[C{{O}_{2}}\] acceptor in \[{{C}_{4}}-\]plant is

A)

RuBP (Ribulose Biphosphate)

B)

PEP (Phosphoenol pyruvate)

C)

Oxaloacetic acid

D)

3-PGA (3-Phosphoglyceric acid)

View Answer
203) Which one of the following is called as indicator species for polluted waters?

A)

Tubifex

B)

Phytoplanktons

C)

Zooplanktons

D)

Prawns

View Answer
204) The intermediate zone lying between two adjacent communities is called

A)

edge effect

B)

keystone

C)

succession

D)

ecotone

View Answer
205) The body of the animal can be divided into identical halves in only one plane is

A)

asymmetry

B)

bilateral symmetry

C)

radial symmetry

D)

biradial symmetry

View Answer
206) The number of individuals at the trophic level decreases from the producer level to the consumer level in the

A)

pyramid of numbers

B)

pyramid of biomass

C)

pyramid of energy

D)

None of the above

View Answer
207) The space between body wall and alimentary canal lined by mesoderm is called

A)

acoelom

B)

pseudocoelom

C)

coelom

D)

None of these

View Answer
208) Spicules are found in

A)

Hydra

B)

Planaria

C)

Sycon

D)

Obelia

View Answer
209) The system in which the veins begin as capillaries in one organ and breaks up into capillaries in different organ is called

A)

portal system

B)

pulmonary circulation

C)

systemic circulation

D)

cardiac capillaries

View Answer
210) The nitrogenous excretory products are formed from the catabolism of amino acids by

A)

Calvin cycle

B)

nitrogen cycle

C)

ornithine cycle

D)

Krebs cycle

View Answer
211) Excessive development of male mammary glands is called

A)

eunuchoidism

B)

male hypogonadism

C)

gynaecomastia

D)

female hypogonadism

View Answer
212) The wall of the stomach is protected against the action of HCl by

A)

epidermal layer

B)

mesodermal layer

C)

mucous layer

D)

muscular layer

View Answer
213) The volume of urine to be excreted from kidneys is well regulated by a hormone called

A)

TSH

B)

ACTH

C)

FSH

D)

ADH

View Answer
214) The ankle, knee and elbow joints are

A)

synovial joints

B)

hinge joints

C)

pivot joints

D)

ellipsoid joints

View Answer
215) The method used to detect tissue pathology or any blockages in the blood vessel surrounding the heart is

A)

digital subtraction angiography

B)

magnetic resonance imaging

C)

CT scan

D)

electroencephalography

View Answer
216) Graft between individuals of different species is called

A)

xenograft

B)

isograft

C)

autograft

D)

allograft

View Answer
217) In the liver, alcohol is converted into a more toxic substance called

A)

acetaldehyde

B)

formaldehyde

C)

hydrogen cyanide

D)

methane

View Answer
218) The blood cancer is

A)

melanoma

B)

sarcoma

C)

carcinoma

D)

leukaemia

View Answer
219) Which one of the following is a stimulant?

A)

Barbiturates

B)

Cocaine

C)

Marijuana

D)

Anti-histamines

View Answer
220) Pairing or synapsis between homologous chromosome occur during

A)

leptotene

B)

pachytene

C)

zygotene

D)

diplotene

View Answer
221) Species occupying different geographical areas are termed as

A)

sympatric species

B)

sibling species

C)

llopatric species

D)

endangered species

View Answer
222) Organs that perform the same function but are not similar in structural details and origin are called

A)

analogous organs

B)

homologous organs

C)

vestigial organs

D)

None of the above

View Answer
223) The suicidal bags of the cell are

A)

lysosomes

B)

ribosomes

C)

dictyosomes

D)

phagosomes

View Answer
224) The monohybrid test     cross      ratio is

A)

1 : 1

B)

1 : 1 : 1 : 1

C)

9 : 3 : 3 : 1

D)

9 : 3 : 4

View Answer
225) Oparin-Haldanes view on the origin of life was first experimentally recognised by

A)

Malthus

B)

Plato

C)

Louis Pasteur

D)

Stanley L Miller

View Answer