Solved papers for AMU Medical AMU Solved Paper-2010

AMU Solved Paper-2010 Total Questions - 200

1) Which of the following does not depict the correct link between technology and physics?

A)

Optical fibres \[\leftrightarrow \] total internal reflection of light

B)

Nuclear reactor \[\leftrightarrow \] nuclear fusion

C)

Electron microscope \[\leftrightarrow \] wave nature of electrons

D)

Electric generator \[\leftrightarrow \] laws of electromagnetic induction

View Answer
2) If E, M, L and G denote energy, mass, angular momentum and gravitational constant respectively, then the quantity \[({{\text{E}}^{\text{2}}}{{\text{L}}^{\text{2}}}/{{\text{M}}^{\text{5}}}{{\text{G}}^{\text{2}}})\]has the dimensions of

A)

angle

B)

length

C)

mass

D)

None of these

View Answer
3) Choose the incorrect statement out of the following.

A)

Every measurement by any measuring instrument has some error

B)

Every calculated physical quantity that is based on measured values has some error

C)

A measurement can have more accuracy but less precision and vice-versa

D)

The percentage error is different from relative error

View Answer
4) Select the incorrect statements from the following S1 : Average velocity is path length divided by time interval. S2 : In general, speed is greater than the magnitude of the velocity. S3 : A particle moving in a given direction with a non-zero velocity can have zero speed. S4 : The magnitude of average velocity is the average speed.

A)

\[{{S}_{2}}\]and \[{{S}_{3}}\]

B)

\[{{S}_{1}}\]and \[{{S}_{4}}\]

C)

\[{{S}_{1}},\text{ }{{S}_{3}}\]and \[{{S}_{4}}\]

D)

All four statements

View Answer
5) The ratios of the distance traversed, in successive intervals of time by a body, falling from rest, are

A)

1 : 3 : 5 : 7 : 9.........

B)

2 : 4 : 6 : 8 : 10 .........

C)

1 : 4 : 7 : 10 : 13 .........

D)

None of the above

View Answer
6) A body A is thrown up vertically from the ground with a velocity \[{{v}_{o}}\]and another body B is simultaneously dropped from a height H. They meet at a height \[\frac{H}{2}\] if \[{{v}_{o}}\] is equal to

A)

\[\sqrt{2gH}\]

B)

\[\sqrt{gH}\]

C)

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

D)

\[\frac{2g}{H}\]

View Answer
7) Which of the following graphs cannot possibly represent one dimensional motion of a particle? I and II            II and III II and IV          All four

A)

I and II

B)

II and III

C)

II and IV

D)

All four

View Answer
8) A block of mass m is placed on a smooth sphere of radius R. It slides when pushed slightly. At what distance h, from the top, will it leave the sphere?

A)

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

B)

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

C)

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

D)

\[R\]

View Answer
9) A man, of mass 60 kg, is riding in a lift. The weight of the man, when the lift is accelerating upwards and downwards at 2 \[m{{s}^{-2}}\] are respectively \[\left( \text{taking g }=\text{ 1}0\text{ m}{{\text{s}}^{-\text{2}}} \right)\]

A)

720 N and 480 N

B)

480 N and 720 N

C)

600 N and 600 N

D)

None of these

View Answer
10) One end of a string of length L is connected to a particle of mass M and the other to a small peg on a smooth horizontal table. If the particle moves in a circle with a speed v, the net force, directed towards the centre, on the particle is

A)

\[T+\frac{M{{v}^{2}}}{L}\]

B)

\[T\]

C)

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

D)

Zero

View Answer
11) A variable force, given by the two- dimensional vector \[\text{F }=\left( \text{3}{{\text{x}}^{\text{2}}}\overset{\hat{\ }}{\mathop{\text{i}}}\,+\text{4}\overset{\hat{\ }}{\mathop{\text{j}}}\, \right),\] acts on a particle. The force is in newton and x is in metre. What is the change in the kinetic energy of the particle as it moves from the point with coordinates (2, 3) to (3, 0)? (The coordinates are in metre)

A)

-7 J

B)

Zero

C)

+7 J

D)

d) +19 J

View Answer
12) A billiards player hits a stationary ball by an identical ball to pocket the target ball in a comer pocket that is at an angle of \[35{}^\circ \] with respect to the direction of motion of the first ball. Assuming the collision as elastic and that frictional and rotational motions are not important, the angle made by the target ball with respect to the incoming ball is

A)

\[35{}^\circ \]

B)

\[50{}^\circ \]

C)

\[55{}^\circ \]

D)

\[60{}^\circ \]

View Answer
13) The centre of mass of a system of three particles of masses 1 g, 2 g and 3 g is taken as the origin of a coordinate system. The position vector of a fourth particle of mass 4 g such that the centre of mass of the four particle system lies at the point (1, 2, 3) is a \[\left( \overset{\hat{\ }}{\mathop{\text{i}}}\,+\text{2 }\overset{\hat{\ }}{\mathop{\text{j}}}\,+\text{3}\,\overset{\hat{\ }}{\mathop{\text{k}}}\, \right),\] where a is a constant. The value of a is

A)

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

B)

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

C)

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

D)

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

View Answer
14) A string is wound round the rim of a mounted flywheel of mass 20 kg and radius 20 cm. A steady pull of 25 N is applied on the cord. Neglecting friction and mass of the string, the angular acceleration of the wheel is

A)

\[\text{5}0{{\text{s}}^{-\text{2}}}\]

B)

\[\text{25}{{\text{s}}^{-\text{2}}}\]

C)

\[\text{12}.\text{5}{{\text{s}}^{-\text{2}}}\]

D)

\[\text{6}.\text{25}{{\text{s}}^{-\text{2}}}\]

View Answer
15) A person, with outstretched arms, is spinning on a rotating stool. He suddenly brings his arms down to his sides. Which the following is true about his kinetic energy K and angular momentum L?

A)

Both K and L increase

B)

Both K and L remain unchanged

C)

K remains constant, L increases

D)

K increases but L remains constant

View Answer
16) Three equal masses of 1 kg each are placed at the vertices of an equilateral triangle PQ.R and a mass of 2 kg is placed at the centroid 0 of the triangle which is at a distance of V2 m from each of the vertices of the triangle. The force, in newton, acting on the mass of 2 kg is

A)

2

B)

                                       \[\sqrt{2}\]

C)

1

D)

zero

View Answer
17) One can easily weighs the earth by calculating the mass of earth using the formula (in usual notation)

A)

\[\frac{G}{g}R_{E}^{2}\]

B)

\[\frac{g}{G}R_{E}^{2}\]

C)

\[\frac{g}{G}R_{{}}^{2}\]

D)

\[\frac{G}{g}R_{E}^{3}\]

View Answer
18) Choose the correct statement(s) for a cricket ball that is spinning clockwise through air S1 : Streamlines of air are symmetric around the ball. S2: The velocity of air above the ball relative to it is larger than that below the ball. 53 : The velocity of air above the ball relative to it is smaller than that below the ball. S4 : There is a net upward force on the ball.

A)

S1, S2 and S4

B)

S2 and S4

C)

S4 only

D)

S3 only

View Answer
19) Adding detergents to water helps in removing dirty greasy stains. This is because it increases the oil-water surface tension it decreases the oil-water surface tension it increases the viscosity of the solution dirt is held suspended surrounded by detergent molecules

A)

2 and 4

B)

1 only

C)

3 and 4

D)

4 only

View Answer
20) During an adiabatic expansion, the increase in volume is associated with which of the following possibilities w.r.t. pressure and temperature?

A)

Pressure                              Temperature increase              increase

B)

decrease            decrease

C)

increase              decrease

D)

decrease            increase

View Answer
21) Choose the incorrect statement from the following S1 : The efficiency of a heat engine can be 1, but the coefficient of performance of a refrigerator can never be infinity. S2: The first law of thermodynamics is basically the principle of conservation of energy. S3: The second law of thermodynamics does not allow several phenomena Consistent with the first law S4: A process, whose sole result is the transfer of heat from a colder object to a hotter object is impossible.

A)

S1

B)

S3

C)

S2

D)

S4

View Answer
22) A cylinder of fixed capacity (of 44.8 L) contains 2 moles of helium gas at STP. What is the amount of heat needed to raise the temperature of the gas in the cylinder by \[{{20}^{o}}C?(Use\,R=8.31\,Jmo{{l}^{-1}}{{K}^{-1}})\]

A)

996 J

B)

831 J

C)

498 J

D)

374 J

View Answer
23) What is the type of motion of a mass if the total force acting on the mass at a time \[t\,is\,\overset{\to }{\mathop{F}}\,=-k\,\overset{\to }{\mathop{x}}\,-b\,\overset{\to }{\mathop{v}}\,\,,\]where k and b are constants?

A)

Simple harmonic motion

B)

Forced oscillations

C)

Resonance

D)

Damped harmonic oscillations

View Answer
24) A travelling wave is represented by the equation \[\text{y}=\frac{1}{10}\text{ sin}\left( \text{6}0\text{t}+\text{2x} \right),\]where x and \[\text{y}\]are in metre and c is in second. This represents a wave 1. travelling with a velocity of 30 \[\text{m}{{\text{s}}^{\text{-1}}}\]30 2. of frequency \[\frac{30}{\pi }\] Hz                  3. of wavelength 7t metre 4. of amplitude 10 cm 5. moving in the positive x - direction Pick out the correct statements from the above.

A)

1, 2, 4

B)

3, 4, 5

C)

1,2,3,4

D)

All of these

View Answer
25) Gausss law of electrostatics would be invalid if

A)

there were magnetic monopoles

B)

the speed of light was not a universal constant

C)

the inverse square law was not exactly true

D)

the electrical charge was not quantized

View Answer
26) Consider the following statements about electric dipole and select the correct ones. S1 : Electric dipole moment vector \[\overset{\to }{\mathop{p}}\,\]is directed from the negative charge to the positive charge 52 : The electric field of a dipole at a point with position vector \[\overset{\to }{\mathop{r}}\,\] depends on \[\overset{\to }{\mathop{\left| \text{r} \right|}}\,\] as well as the angle between r and p. The electric dipole potential falls off as \[\frac{1}{{{r}^{2}}}\] and not as \[\frac{1}{r}.\] S4: In a uniform electric field, the electric dipole experiences no net forces but a torque \[\overset{\to }{\mathop{\text{t}}}\,=\overset{\to }{\mathop{\text{p}}}\,\text{ x }\overset{\to }{\mathop{\text{E}}}\,.\]

A)

S2, S3 and S4

B)

S3 and S4

C)

S2 and S3

D)

All four

View Answer
27) A slab of material of dielectric constant K has the same area as the plates of a parallel plate capacitor but has a thickness \[\left( \frac{3}{4} \right)\] d, where d is the separation of the plates. The ratio of the capacitance C (in the presence of the dielectric) to the capacitance \[{{C}_{o}}\](in the absence of the dielectric) is

A)

\[\frac{3K}{K+3}\]

B)

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

C)

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

D)

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

View Answer
28) A color coded carbon resistor has the colors orange, blue, green and silver. Its resistance value and tolerance percentage respectively are

A)

\[\text{36}\times \text{l}{{\text{0}}^{5}}\Omega \text{ and 1}0%\]

B)

\[\text{36}\times \text{l}{{\text{0}}^{4}}\Omega \text{ and 5}%\]

C)

\[63\times {{10}^{5}}\Omega \,and\,10%\]

D)

\[\text{35}\times \text{l}{{0}^{\text{6}}}\,\Omega \,\text{and}\,\text{5}%\]

View Answer
29) For the current loops shown in the figure, Kirchhoffs loop rule for the loops AHDCBA and AHDEFGA yields these equations respectively

A)

\[-30{{I}_{1}}-41{{I}_{3}}+45=0\,\,and\,-30A{{I}_{1}}\] \[+21{{I}_{2}}-80=0\]

B)

\[30{{I}_{1}}-41{{I}_{3}}+45=0\,\,and\]\[30{{I}_{1}}-21{{I}_{2}}-80=0\]

C)

\[30{{I}_{1}}+41{{I}_{3}}-45=0\,\,and\,\]\[-30{{I}_{1}}+21{{I}_{3}}+80=0\,\,\]

D)

None of the above

View Answer
30) In an experiment with potentiometer, a cell of emf 1.25 V gives a balance point at 35 cm length of the wire. If the cell is replaced by another cell, the balance point shift to 63 cm. The emf of the second cell is

A)

3.25 V

B)

2.5 V

C)

2.25 V

D)

2 V

View Answer
31) The magnitude of the magnetic field required to accelerate protons (mass \[=\text{1}.\text{67x 1}{{0}^{-\text{27}}}\text{ kg})\]in a cyclotron that is operated at an oscillator frequency 12 MH is approximately

A)

0.8 T

B)

1.6 T

C)

2.0 T

D)

3.2 T

View Answer
32) Each of the three parallel wires, A, B and C are carrying current in the direction shown in the figure. The wire B will

A)

move to the right

B)

move to the left

C)

remain stationary

D)

moved down in the direction of the current

View Answer
33) A magnet is placed in a non-uniform magnetic field. It experiences

A)

a force but not a torque

B)

a torque but not a force

C)

a force and a torque

D)

neither a force nor a torque

View Answer
34) The north pole of a long bar magnet was pushed slowly into a short solenoid connected to a galvanometer. The magnet was held stationary for a few seconds with the North Pole in the middle of the solenoid and then withdrawn rapidly. The maximum deflection of the galvanometer was observed when the magnet was

A)

moving towards the solenoid

B)

moving into the solenoid

C)

at rest inside the solenoid

D)

moving out of the solenoid

View Answer
35) A light bulb is rated 100 W for a 220 V supply. The resistance of the bulb and the peak voltage of the source respectively are

A)

2420 and 311 V

B)

4840 and 311 V

C)

484 Q and 440 V

D)

242 Q and 440 V

View Answer
36) A pure inductor of 25 mH is connected to a source of 220 V. Given the frequency of the source as 50 Hz, the rms current in the circuit is

A)

7 A

B)

14 A

C)

28 A

D)

42 A

View Answer
37) Consider the following statements about electromagnetic waves and choose the correct ones. S1 : EM waves having wavelengths 1000 times smaller than light waves are called X-rays. S2 : Ultraviolet waves are used in the treatment of swollen joints. S3 : Alpha and gamma rays are not electromagnetic waves. S4 : de-Broglie waves are not electromagnetic in nature. S5: Electromagnetic waves exhibit polarization while sound waves do not.

A)

S1, S4 and S5

B)

S3, S4 and S5

C)

S1, S3 and S5

D)

S2, S3 and S4

View Answer
38) Ray optics fails when

A)

the size of the obstacle is 5 cm

B)

the size of the obstacle is 3 cm

C)

the size of the obstacle is less than the wavelength of light

D)

Both and

View Answer
39) Pick out rhe correct statements about optical fibres from the following. S1 : Optical fibres are used for the transmission of optical signals only. S2 : Optical fibres are used for transmitting and receiving electrical signals. S3 : The intensity of light signals sent through optical fibres suffer very small loss. S4: Optical fibres effectively employ the principle of multiple total internal reflections. S5 : Optical fibres are glass fibres coated with a thin layer of a material with lower refractive index.

A)

S1 and S2

B)

S2 and S3

C)

S3 and S4

D)

S2, S3, S4 and S5

View Answer
40) The rectilinear propagation of light in a medium is due to its

A)

high velocity

B)

large wavelength

C)

high frequency

D)

source

View Answer
41) Check the correct statements on scattering of light. S1 : Rayleigh scattering is responsible for the bluish appearance of sky. S2 : Rayleigh scattering is proportional to \[1/{{\lambda }^{4}}\]when the size of the scatterer is much less than\[\lambda \]. S3 : Clouds having droplets of water (large scattering    objects)    scatter    all wavelengths are almost equal and so are generally white. S4 : The sun looks reddish at sunset and sunrise due to Rayleigh scattering.

A)

S1 only

B)

S1 and S2

C)

S2 and S3

D)

S1, S2, S3 and S4

View Answer
42) A diffraction pattern is obtained using a beam of red light. What happens if the red light is replaced by blue light?

A)

No change

B)

Diffraction bands become narrower and crowded together

C)

Bands become broader and farther apart

D)

Bands disappear altogether

View Answer
43) Light of two different frequencies, whose photons have energies 1 eV and 2.5 eV are respectively, successively illuminate a surface of work function 0.5 eV. The ratio of the maximum speeds of the electrons that are emitted is

A)

2 : 1

B)

1 : 2

C)

1 : 3

D)

1 : 4

View Answer
44) The ratio of the de-Broglie wavelength of an electron of energy 10 eV to that of person of mass 66 kg travelling at a speed of 100 km/h is of the order of

A)

\[\text{1}{{0}^{\text{34}}}\]

B)

\[\text{1}{{0}^{\text{27}}}\]

C)

\[\text{1}{{0}^{\text{17}}}\]

D)

\[\text{1}{{0}^{-\text{1}0}}\]

View Answer
45) According to the Bohr theory of hydrogen atom, the speed of the electron, its energy and the radius of its orbit varies with the principal quantum number n, respectively, as

A)

\[\frac{1}{n},\frac{1}{{{n}^{2}}},{{n}^{2}}\]

B)

\[\frac{1}{n},{{n}^{2}},\frac{1}{{{n}^{2}}}\]

C)

\[{{n}^{2}},\frac{1}{{{n}^{2}}},{{n}^{2}}\]

D)

\[n,\frac{1}{{{n}^{2}}},\frac{1}{{{n}^{2}}}\]

View Answer
46) Consider the following statements. S1 : The nuclear force is independent of the charge of nucleons. S2 : The number of nucleons in the nucleus of an atom is equal to the number of electrons in the atom. S3 : All nuclei have masses that are less than the sum of the masses of constituent nucleons. S4 : Nucleons belong to the family of leptons while electrons are members of the family of hadrons. Choose the correct statement (s) from these

A)

S1 only

B)

S1 and S4

C)

S2, S3 and S4

D)

S1 and S3

View Answer
47) The crucial function of moderators in nuclear reactors is to

A)

decrease the energy of neutrons

B)

absorb the extra neutrons

C)

provide shield from nuclear radiations

D)

provide cooling

View Answer
48) An n-p-n transistor is biased to work as an amplifier. Which of the following statements is false?

A)

The electrons go from base region to the collector region

B)

The electrons go from the collector region to the base region

C)

The electrons go from emitter region to the base region

D)

The electrons go from base region to the emitter region

View Answer
49) In a common base amplifier, the phase difference between the input signal voltage and the output voltage is

A)

0

B)

  \[\pi /4\]

C)

\[\pi /2\]

D)

\[\pi \]

View Answer
50) Arrange the following communication frequency bands in the increasing order of frequencies AM broadcast Cellular mobile radio FM broadcast Television UHF Satellite communication

A)

1 3 4 2 5

B)

1 2 3 4 5

C)

5 2 4 3 1

D)

1 3 2 4 5

View Answer
51) When the electron of a hydrogen atom jumps from n = 4 to n = 1 state, the number of spectral lines emitted is

A)

15

B)

9

C)

6

D)

3

View Answer
52) Which of the following is an appropriate set of reactants for the preparation of 1 -methoxy-4 nitrobenzene?

A)

A

B)

B

C)

Both A and B

D)

None of these

View Answer
53) Consider the decomposition of \[{{N}_{2}}{{O}_{5}}\] as \[{{N}_{2}}{{O}_{5}}\xrightarrow{{}}2N{{O}_{2}}+\frac{1}{2}{{O}_{2}}\] The rate of reaction is given by \[\frac{-d[{{N}_{2}}{{O}_{5}}]}{dt}=\frac{1}{2}\frac{d[N{{O}_{2}}]}{dt}=2\frac{d[{{O}_{2}}]}{dt}={{k}_{1}}[{{N}_{2}}{{O}_{5}}]\] Therefore, \[\frac{-d[{{N}_{2}}{{O}_{5}}]}{dt}={{k}_{1}}[{{N}_{2}}{{O}_{5}}]\]                                 \[\frac{+d\,[N{{O}_{2}}]}{dt}=2{{k}_{1}}[{{N}_{2}}{{O}_{5}}]=k_{1}^{}[{{N}_{2}}{{O}_{5}}]\]                                 \[\frac{+d\,\,[{{O}_{2}}]}{dt}=\frac{1}{2}{{k}_{1}}[{{N}_{2}}{{O}_{5}}]=k_{1}^{}[{{N}_{2}}{{O}_{5}}]\] Choose the correct option.

A)

\[{{k}_{1}}=k{{}_{1}}={{k}_{1}}\]

B)

\[{{k}_{1}}=2k_{1}^{}=k_{1}^{}\]

C)

\[4{{k}_{1}}=k_{1}^{}=2k_{1}^{}\]

D)

\[4{{k}_{1}}=2k_{1}^{}=k_{1}^{}\]

View Answer
54) The logarithm of the equilibrium constant of the cell reaction corresponding to the cell\[X(s)|{{X}^{2+}}(aq)||{{Y}^{+}}(aq)|\,Y(s)\] with standard cell potential, \[E_{cell}^{o}=1.2\,V\] is given by

A)

12.5

B)

21.5

C)

40.5

D)

47.2

View Answer
55) If the half cell reactions are given as (i) \[F{{e}^{2+}}(aq)+2{{e}^{-}}\to Fe(s);\,\,\,\,{{E}^{o}}=-0.44\,\,V\] (ii) \[2{{H}^{+}}(aq)+\frac{1}{2}{{O}_{2}}(g)+2{{e}^{-}}\to {{H}_{2}}O(l)\] \[{{E}^{o}}=+1.23\,\,V\] The \[{{E}^{o}}\] for the reaction \[Fe(s)+2{{H}^{+}}+\frac{1}{2}{{O}_{2}}(g)\to F{{e}^{2+}}(aq)+{{H}_{2}}O(l)\] is

A)

+ 1.67V

B)

-1.67V

C)

+ 0.79V

D)

-0.79V

View Answer
56) The most adsorbed gas on activated charcoal is

A)

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

B)

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

C)

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

D)

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

View Answer
57) Which of the following represents the arrangement in increasing order of bond order and bond dissociation energy?

A)

\[O_{2}^{+}<O_{2}^{2-}<O_{2}^{-}<{{O}_{2}}\]

B)

\[O_{2}^{2-}<O_{2}^{-}<{{O}_{2}}<O_{2}^{+}\]

C)

\[{{O}_{2}}<O_{2}^{+}<O_{2}^{2-}<O_{2}^{-}\]

D)

\[O_{2}^{2-}<O_{2}^{-}<O_{2}^{+}<{{O}_{2}}\]

View Answer
58) AgCl is dissolved in excess of each of \[N{{H}_{3}}\], KCN and \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\]. The complex ions produced in each case are

A)

\[{{[Ag{{(N{{H}_{3}})}_{2}}]}^{+}},{{[Ag{{(CN)}_{2}}]}^{+}}\]and \[{{[Ag{{({{S}_{2}}{{O}_{3}})}_{2}}]}^{3-}}\]

B)

\[{{[Ag{{(N{{H}_{3}})}_{2}}]}^{2+}},{{[Ag{{(CN)}_{2}}]}^{3-}}\] and \[{{[A{{g}_{2}}{{({{S}_{2}}{{O}_{3}})}_{2}}]}^{3-}}\]

C)

\[Ag{{(N{{H}_{3}})}_{4}}{{]}^{2+}},{{[Ag{{(CN)}_{2}}]}^{3-}}\] and \[{{[A{{g}_{2}}{{({{S}_{2}}{{O}_{3}})}_{2}}]}^{3-}}\]

D)

\[{{[Ag{{(N{{H}_{3}})}_{2}}]}^{+}},{{[Ag{{(CN)}_{2}}]}^{-}}\] and \[{{[Ag{{({{S}_{2}}{{O}_{3}})}_{2}}]}^{3-}}\]

View Answer
59) The most stable complex among the following is

A)

\[{{[Pd{{(CN)}_{4}}]}^{4-}}\]

B)

\[[Fe{{(CO)}_{5}}]\]

C)

\[{{[Ni{{(CN)}_{4}}]}^{4-}}\]

D)

\[{{[Ni{{(CN)}_{4}}]}^{3-}}\]

View Answer
60) The maximum number of P?H bonds are contained in which of the following molecules?

A)

\[{{H}_{3}}P{{O}_{2}}\]

B)

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

C)

\[{{H}_{3}}P{{O}_{4}}\]

D)

\[{{H}_{4}}{{P}_{2}}{{O}_{7}}\]

View Answer
61) The bond order of the N?0 bonds in \[NO_{3}^{-}\] ion is

A)

0.33

B)

1.00

C)

1.33

D)

1.50

View Answer
62) Among the following the third ionization energy is highest for

A)

magnesium

B)

boron

C)

beryllium

D)

aluminium

View Answer
63) The highest lattice energy corresponds to

A)

MgO

B)

CaO

C)

SrO

D)

BaO

View Answer
64) The change of energy on freezing 1.00 kg of liquid water at \[{{0}^{o}}C\] and 1 atm is

A)

236.7 \[kJ\,k{{g}^{-1}}\]

B)

333.4 \[kJ\,k{{g}^{-1}}\]

C)

-333.4 \[kJ\,k{{g}^{-1}}\]

D)

-236.7 \[kJ\,k{{g}^{-1}}\]

View Answer
65) The degree of hardness of water is usually expressed in terms of

A)

ppm by weight of \[MgS{{O}_{4}}\]

B)

g/L of \[CaC{{O}_{3}}\]and \[MgS{{O}_{3}}\] present

C)

ppm by weight of \[CaC{{O}_{3}}\] irrespective of whether it is actually present

D)

ppm of \[CaC{{O}_{3}}\] actually present in water

View Answer
66) 0.1 M NaCI and 0.05 M \[BaC{{l}_{2}}\] solutions are separated by a semipermeable membrane in a container. For this system, choose the correct answer.

A)

There is no movement of any solution across the membrane

B)

Water flows from \[BaC{{l}_{2}}\] solution towards NaCI solution

C)

Water flows from NaCI solution towards \[BaC{{l}_{2}}\] solution

D)

Osmotic pressure of 0.1 M NaCI is lower than the osmotic pressure of \[BaC{{l}_{2}}\] (Assume complete dissociation)

View Answer
67) If W is the amount of work done by the system and q is the amount of heat supplied to the system, identify the type of the system.

A)

Isolated system

B)

Closed system

C)

Open system

D)

System with thermally conducting walls

View Answer
68) The charge balance equation of species in 0.100 M acetic acid solution is given by

A)

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

B)

\[[{{H}^{+}}]=[C{{H}_{3}}CO{{O}^{-}}]\]

C)

\[[{{H}^{+}}]=[O{{H}^{-}}]+[C{{H}_{3}}CO{{O}^{-}}]\]

D)

\[2[{{H}^{+}}]=[O{{H}^{-}}]+[C{{H}_{3}}CO{{O}^{-}}]\]

View Answer
69) Total number or voids in 0.5 mole or compound forming hexagonal closed packed structure are

A)

\[6.022\times {{10}^{23}}\]

B)

\[3.011\times {{10}^{23}}\]

C)

\[9.033\times {{10}^{23}}\]

D)

\[4.516\times {{10}^{23}}\]

View Answer
70) Four solutions of \[{{K}_{2}}S{{O}_{4}}\] with the following concentration 0.1 M, 0.01 m, 0.001 m and m are available. The maximum value of vant Hoff factor, i, corresponds to

A)

0.0001 m solution

B)

0.001 m solution

C)

0.01 m solution

D)

0.1 m solution

View Answer
71) The pH of a solution prepared by mixing 2.0 mL of HCl solution of pH 3.0 and 3.0 mL of NaOH of pH 10.0 is

A)

2.5

B)

3.5

C)

5.5

D)

6.5

View Answer
72) The set of quantum numbers that represents the highest energy of an atom is

A)

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

B)

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

C)

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

D)

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

View Answer
73) Which of the following sets of quantum numbers represents the 19th electron in chromium? (Z = 24 for Cr)

A)

4, 0, 0 \[\frac{1}{2}\]

B)

4, 1, -1, \[\frac{1}{2}\]

C)

3, 2, 2, \[\frac{1}{2}\]

D)

3, 2, -2, \[\frac{1}{2}\]

View Answer
74) The number of molecules in 100 mL of N \[{{H}_{2}}S{{O}_{4}}\] is

A)

\[6.022\times {{10}^{22}}\]

B)

\[6.02\times {{10}^{21}}\]

C)

\[6.02\times {{10}^{20}}\]

D)

\[6.02\times {{10}^{18}}\]

View Answer
75) For the reaction \[AB(g)A(g)+B(g),\,AB\] is 33% dissociated at a total pressure of p. Therefore, p is related to \[{{K}_{p}}\] by one of the following options

A)

\[p={{K}_{p}}\]

B)

\[p=3{{K}_{p}}\]

C)

\[p=4{{K}_{p}}\]

D)

\[p=8{{K}_{p}}\]

View Answer
76) When subjected to acid catalysed hydration, the order of reactivity of the alkenes; \[{{(C{{H}_{3}})}_{2}}C=C{{H}_{2}}(I),C{{H}_{3}}CH=C{{H}_{2}}(II)\] and\[C{{H}_{2}}=C{{H}_{2}}(III)\] is

A)

III > II > I

B)

I > III > II

C)

I > II > III

D)

II > I > III

View Answer
77) Name the reagent used to bring about the following transformation : But-2-ene to ethanal

A)

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

B)

\[Cr{{O}_{2}}C{{l}_{2}}/{{H}_{3}}{{O}^{+}}\]

C)

PCC

D)

\[{{C}_{3}}/{{H}_{2}}O\] -Zn dust

View Answer
78) Arrange the following in increasing order of their basic strength : \[C{{H}_{3}}N{{H}_{2}}(I),\,{{(C{{H}_{3}})}_{2}}NH(II),{{(C{{H}_{3}})}_{3}}N(III)\],\[{{C}_{6}}{{H}_{5}}C{{H}_{2}}N{{H}_{2}}(IV)\]

A)

IV < III < II < I

B)

IV < III < I < II

C)

I < II < III < IV

D)

IV < III < I = II

View Answer
79) Arrange the following in increasing order of their intermolecular forces : Nylon-66 (I), Buna-S (II), Polythene (III)

A)

II, I, III

B)

III, II, I

C)

I, II, III

D)

II, III, I

View Answer
80) The \[p{{K}_{{{a}_{1}}}}\] and \[p{{K}_{{{a}_{2}}}}\]of an amino acid are 2.3 and 9.7 respectively. The isoelectric point of the amino acid is

A)

12.0

B)

7.4

C)

6.0

D)

3.7

View Answer
81) The transfer RNA anticodon for the messenger RNA codon G-C-A is

A)

C-G-U

B)

G-C-U

C)

U-G-C

D)

G-U-C

View Answer
82) The number of p-particles emitted during the transformation of \[_{y}^{x}A\] to \[_{n}^{m}B\]

A)

\[\frac{x-m}{4}\]

B)

\[n+\frac{x-m}{2}+y\]

C)

\[n+\frac{x-m}{2}-y\]

D)

\[2y-n+x-m\]

View Answer
83) In the following reaction, the major product obtained is

A)

B)

C)

D)

View Answer
84) Identify the product (E) in the following sequence of reactions.

A)

B)

C)

D)

View Answer
85) Which of the following fluoride of xenon has zero dipole moment?

A)

\[Xe{{F}_{2}}\]

B)

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

C)

\[Xe{{F}_{4}}\]

D)

\[Xe{{F}_{6}}\]

View Answer
86) Choose the correct statement.

A)

\[{{[Co{{(N{{H}_{3}})}_{6}}]}^{2+}}\] is oxidised to diamagnetic \[{{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}\] by the oxygen in air

B)

Tetrahedral complexes are more stable than octahedral complexes

C)

\[{{[Fe{{(CN)}_{6}}]}^{3-}}\] is stable but \[{{[Fe{{F}_{6}}]}^{3-}}\] is unstable

D)

The \[{{[Cu{{[N{{H}_{3}})}_{4}}]}^{2+}}\] ion has a tetrahedral geometry and is diamagnetic

View Answer
87) The hydrolysis of \[NC{{l}_{3}}\] by water produces

A)

\[N{{H}_{2}}OH\] and HOCI

B)

\[N{{H}_{2}}N{{H}_{2}}\] and HCl

C)

\[N{{H}_{4}}OH\] and HOCl

D)

\[N{{H}_{2}}Cl\] and HOCI

View Answer
88) During the conversion of \[N{{H}_{2}}OH\to {{N}_{2}}O\], the equivalent weight of \[N{{H}_{2}}OH\] (mol. wt. of \[N{{H}_{2}}OH\] is M) is

A)

M

B)

M/2

C)

M/4

D)

M/5

View Answer
89) In the disintegration process\[A\xrightarrow{-\alpha }B\xrightarrow{-\beta }C\xrightarrow{-\beta }D\]the correct statement is

A)

A and B are isobars

B)

A and C are isotones

C)

A and B are isotopes

D)

A and D are isotopes

View Answer
90) Which of the following compounds shows both Frenkel and Schottky defects?

A)

NaCI

B)

AgCl

C)

AgBr

D)

KCl

View Answer
91) The pH of a solution obtained by mixing equal volumes of \[\frac{N}{10}\] NaOH and \[\frac{N}{20}\] HCl is

A)

13.4

B)

12.4

C)

7.6

D)

1.6

View Answer
92) The solubilities of \[N{{a}_{2}}S{{O}_{4}},BeS{{O}_{4}},\,MgS{{O}_{4}}\] and \[BeS{{O}_{4}}\] will follow the order

A)

\[BeS{{O}_{4}}>MgS{{O}_{4}}>N{{a}_{2}}S{{O}_{4}}>BaS{{O}_{4}}\]

B)

\[BeS{{O}_{4}}>N{{a}_{2}}S{{O}_{4}}>MgS{{O}_{4}}>BaS{{O}_{4}}\]

C)

\[MgS{{O}_{4}}>BeS{{O}_{4}}>N{{a}_{2}}S{{O}_{4}}>BaS{{O}_{4}}\]

D)

\[N{{a}_{2}}S{{O}_{4}}>BeS{{O}_{4}}>MgS{{O}_{4}}>BaS{{O}_{4}}\]

View Answer
93) Arrange the following compounds in increasing order of their reactivity in nucleophilic addition reactions. Ethanal (I), Propanal (II), Propanone (III), Butanone (IV)

A)

III < II < I < IV

B)

II < I < III < IV

C)

IV < III < II < I

D)

I < II < III < IV

View Answer
94) The strongest Lewis acid among boron halides is

A)

\[BB{{r}_{3}}\]

B)

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

C)

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

D)

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

View Answer
95) The correct order of increasing hydration energy of the following conjugate bases of oxoacids of chlorine is

A)

\[Cl{{O}^{-}}<ClO_{2}^{-}<ClO_{3}^{-}<ClO_{4}^{-}\]

B)

\[ClO_{4}^{-}<ClO_{3}^{-}<ClO_{2}^{-}<Cl{{O}^{-}}\]

C)

\[ClO_{4}^{-}<ClO_{3}^{-}<Cl{{O}^{-}}<ClO_{2}^{-}\]

D)

\[ClO_{3}^{-}<ClO_{4}^{-}<ClO_{2}^{-}<Cl{{O}^{-}}\]

View Answer
96) Thermodynamically the most stable form of carbon is

A)

diamond

B)

graphite

C)

fullerenes

D)

coal

View Answer
97) The estimation of available chlorine in bleaching powder is done by

A)

acid-base titration

B)

permanganometric titration

C)

iodimetric titration

D)

iodometric titration

View Answer
98) A solid is formed by two elements P and Q. The element Q forms cubic close packing and atoms of P occupy one-third of tetrahedral voids. The formula of the compound is

A)

\[P{{Q}_{3}}\]

B)

\[{{P}_{3}}Q\]

C)

\[{{P}_{2}}{{Q}_{3}}\]

D)

\[{{P}_{3}}{{Q}_{2}}\]

View Answer
99) The compound exhibiting maximum value of equivalent conductance in a fused state is

A)

\[SrC{{l}_{2}}\]

B)

\[CaC{{l}_{2}}\]

C)

\[MgC{{l}_{2}}\]

D)

\[BeC{{l}_{2}}\]

View Answer
100) Which of the following have been arranged in decreasing order of oxidation number of sulphur?

A)

\[N{{a}_{2}}{{S}_{4}}{{O}_{6}}>{{H}_{2}}{{S}_{2}}{{O}_{7}}>N{{a}_{2}}{{S}_{2}}{{O}_{3}}>{{S}_{8}}\]

B)

\[{{H}_{2}}S{{O}_{4}}>S{{O}_{2}}>{{H}_{2}}S>{{H}_{2}}{{S}_{2}}{{O}_{8}}\]

C)

\[SO_{2}^{2+}>SO_{4}^{2-}>SO_{3}^{2-}>HSO_{4}^{-}\]

D)

\[{{H}_{2}}S{{O}_{5}}>{{H}_{2}}S{{O}_{3}}>SC{{l}_{2}}>{{H}_{2}}S\]

View Answer
101) Nuclear membrane is absent in

A)

Monera

B)

Protista

C)

Fungi

D)

Plantae

View Answer
102) One of the following is not the characteristic feature of cyanobacteria.

A)

They are multicellular

B)

They form colonies

C)

They form blooms in polluted water bodies

D)

They can fix atmospheric nitrogen

View Answer
103) Heterotrophic fungi can live as

A)

saprophytes

B)

symbionts

C)

parasites

D)

All of these

View Answer
104) In double fertilization

A)

two male gametes ruse with two eggs

B)

one male gamete fuses with the egg and the other fuses with the secondary nucleus

C)

one male gamete fuses with the egg and the other fuses with the antipodal

D)

one male gamete fuses with the antipodal and the other fuses with the diploid nucleus

View Answer
105) Find the correct match.

A)

Mustard plant          -           Leaves are opposite

B)

Mustard plant            -           Leaves are alternate

C)

Guava plant       -           Leaves are alternate

D)

Guava plant       -           Leaves are whorled

View Answer
106) Which of the following is not correctly paired?

A)

Fabaceae            -           Legume family

B)

Solanaceae        -           Potato family

C)

Liliaceae              -           Sunflower family

D)

Brassicaceae        -           Mustard family

View Answer
107) Find the incorrect statement.

A)

Root hairs are unicellular elongations

B)

Root hairs absorb water and minerals

C)

Trichomes are unicellular elongations

D)

None of the above

View Answer
108) Which one of the following is not correct?

A)

Early wood is characterized by large number of xylary elements

B)

Early wood is characterised by vessels with wider cavities

C)

Late wood is characterised by large number of xylary elements

D)

Late wood is characterised by vessels with narrower cavities

View Answer
109) Cells divide and new cells are formed from pre-existing cells. This concept was given by

A)

Matthias Schleiden

B)

Theodore Schwann

C)

Matthias Schleiden and Theodore Schwann

D)

Rudolf Virchow

View Answer
110)                                                                                                                   pump in a cell is an example of

A)

osmosis

B)

diffusion

C)

passive transport

D)

active transport

View Answer
111) Aleuroplasts in a cell stores

A)

starch

B)

oil

C)

protein

D)

nutrients

View Answer
112) Chiasmata formation takes place during

A)

prophase- I

B)

metaphase-I

C)

anaphase-II

D)

telophase- I

View Answer
113) The size of mitochondria in plant cell is

A)

0.1- 10 \[\mu \]m long

B)

1.0- 4.0 \[\mu \]m long

C)

2.0- 4.0 \[\mu \]m long

D)

3.0- 4.0 \[\mu \]m long

View Answer
114) Active transport is characterized by

A)

requires special membrane proteins

B)

highly selective

C)

requires ATP energy

D)

All of the above

View Answer
115) Stomatal opening or closing is due to

A)

change in the turgidity of guard cells

B)

the inner walls of each guard cells is thick and elastic

C)

cellulose microfibrils of guard cells are oriented radially

D)

All of the above

View Answer
116) The loss of water in \[{{\text{C}}_{\text{4}}}\text{-}\]plants compared to \[{{\text{C}}_{\text{3}}}\text{-}\]plants for the same amount of \[C{{O}_{2}}\]fixed is

A)

half

B)

one- third

C)

one- fourth

D)

double

View Answer
117) Which one of the following element is not remobilised in leaf?

A)

Nitrogen

B)

Phosphorus

C)

Potassium

D)

Calcium

View Answer
118) Micronutrients are needed in amounts equivalent to

A)

8 m mole/kg of dry matter

B)

18 m mole/kg of dry matter

C)

25 m mole/kg of dry matter

D)

30 m mole/kg of dry matter

View Answer
119) Denitrification is carried out by

A)

Nitrosomonas

B)

Pseudomonas

C)

Nitrobacter

D)

Nitrococcus

View Answer
120) The creation of proton gradient across the thylakoid membrane is a result of

A)

decrease in proton number in stroma

B)

accumulation of protons in the lumen

C)

decrease in the pH in the lumen

D)

All of the above

View Answer
121) For every                                                                                                               \[C{{O}_{2}}\] molecule entering the Calvin cycle, the number of ATP and NADPH required is

A)

2 ATP+2 NADPH

B)

2 ATP+3 NADPH

C)

3 ATP+2 NADPH

D)

3 ATP+3 NADPH

View Answer
122) In citric acid cycle, decarboxylarion occurs when

A)

citric acid converts to \[\alpha\] -ketoglutaric acid

B)

succinic acid converts to malic acid

C)

malic acid converts to oxaloacetic acid

D)

oxaloacetic acid converts to citric acid

View Answer
123) Which one of the following plant function is not controlled by auxins?

A)

Apical dominance

B)

Phototropism

C)

Growth

D)

Photosynthesis

View Answer
124) Find the incorrect match.

A)

                Tap root                               ?           Carrot

B)

                Adventitious root            ?           Sweet potato

C)

                Prop root                             ?           Banyan tree

D)

                Stilt root                               ?           Turnip

View Answer
125) Medullary rays are made up of

A)

parenchymatous cells

B)

sclerenchymatous cells

C)

tracheids

D)

fibres

View Answer
126) Which one of the following is matched incorrectly?

A)

Pinus                    ?           Coralloid roots

B)

Sequoia               ?           Tap roots

C)

Cycos                   ?           Unbranched stem

D)

Cedrus                 ?           Branched stem

View Answer
127) One of the following is not true for hydrophytes.

A)

Vessels are usually absent

B)

Tracheids are absent

C)

Cuticle is poorly developed

D)

Air chambers are well developed

View Answer
128) A typical dicotyledonous embryo consists of

A)

radicle only

B)

embryonal axis only

C)

cotyledons only

D)

All of the above

View Answer
129) When pollen is transferred from anther of a flower to stigma of another flower of the same plant, pollination is referred to as

A)

geitonogamy

B)

allogamy

C)

xenogamy

D)

siphonogamy

View Answer
130) Synergids are

A)

haploid

B)

diploid

C)

triploid

D)

tetraploid

View Answer
131) The residual persistent nucellus is known as

A)

perisperm

B)

pericarp

C)

integuments

D)

None of these

View Answer
132) Phenotypic ratio in plant snapdragon in                                                                                                                \[{{F}_{2}},\] is

A)

1 : 1

B)

2 : 1

C)

3 : 1

D)

1 : 2 : 1

View Answer
133) In transcription in eukaryotes, heterogeneous nuclear RNA (hn RNA) is transcribed by

A)

RNA polymerase- I

B)

RNA polymerase- II

C)

RNA polymerase-III

D)

All of the above

View Answer
134) Non- proteinaceous enzyme that acts as a catalyst for the formation of peptide bond, is

A)

spliceosome

B)

ribozyme

C)

RNA polymerase- I

D)

RNA polymerase-III

View Answer
135) In lac operon, i-gene codes for

A)

inducer of lac operon

B)

represser of lac operon

C)

hydrolysis of disaccharide

D)

permease

View Answer
136) Which one of the following has dual functions? It codes for methionine and also cacts as initiator codon

A)

AUG

B)

AUC

C)

ACU

D)

ACA

View Answer
137) Methyl guanosine triphosphate is added to the 5 end of hn RNA in a process of

A)

splicing

B)

capping

C)

tailing

D)

None of these

View Answer
138) A typical nucleosome contains

A)

100 bp of DNA helix

B)

200 bp of DNA helix

C)

300 bp of DNA helix

D)

400 bp of DNA helix

View Answer
139) House- keeping proteins occur in

A)

endoplasmic reticulum

B)

Golgi complex

C)

cytoskeleton

D)

All of the above

View Answer
140) The purpose of biological treatment of waste water is to

A)

reduce BOD

B)

increase BOD

C)

reduce sedimentation

D)

increase sedimentation

View Answer
141) The main sources of biofertilizers are

A)

bacteria

B)

cyanobacteria

C)

fungi

D)

All of these

View Answer
142) Maize hybrids have been developed for higher amount of

A)

lysine

B)

leucine

C)

methionine

D)

  cysteine

View Answer
143) "Grey biotechnology" is referred to

A)

medical process

B)

industrial process

C)

agricultural process

D)

aquatic process

View Answer
144) Salt tolerant transgenic has been developed for

A)

brinjal

B)

grape

C)

potato

D)

tomato

View Answer
145) Insect tolerant gene from Bacillus thurmgiensis is introduced using T, plasmid of

A)

Escherichia coli

B)

Haemophilus influenza

C)

Agrobacterium tumefaciens

D)

Arabidopsis thaliana

View Answer
146) Pyramid of energy is

A)

always upright

B)

always inverted

C)

may be upright or inverted

D)

None of the above

View Answer
147) In an ecosystem, the cycling of nutrients is known as

A)

geological cycle

B)

chemical cycle

C)

geochemical cycle

D)

biogeochemical cycle

View Answer
148) Indias share in the global species diversity is about

A)

2 per cent

B)

4 per cent

C)

6 per cent

D)

8 per cent

View Answer
149) The Air (Prevention and Control of Pollution) Act was amended in 1987 to include one of the following as pollutant.

A)

Water

B)

Noise

C)

Dust

D)

None of these

View Answer
150) One of the following is not a green house gas.

A)

Carbon dioxide

B)

Methane

C)

Ethane

D)

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

View Answer
151) In the resting muscle fibre, tropomyosin partially covers

A)

calcium binding sites on troponm

B)

actin binding sites on myosin

C)

myosin binding sites on actin

D)

calcium binding sites on actin

View Answer
152) he most commonly maintained species of bee by beekeepers is

A)

Apis mellifera

B)

Apis dorsata

C)

Apis indica

D)

Apisflorea

View Answer
153) Which of the following statements about colour blindness is correct?

A)

2% men are red colorblind, 6% are green colorblind

B)

6% men are red colorblind, 2% are green colorblind

C)

10% men are red colorblind, 5% are green colorblind

D)

5% men are red colorblind, 10% are green colorblind

View Answer
154) The product of which of the following organisms has been commercialized as blood cholesterol lowering agent?

A)

Trichoderma polysporum

B)

Saccharomyces cerevisiae

C)

Aspergillus niger

D)

Monascus purpureus

View Answer
155) Stereocilia occur in

A)

pseudostratified columnar epithelium of trachea

B)

columnar epithelium of stomach

C)

stratified columnar epithelium of pharynx

D)

pseudostratified columnar epithelium of epididymis

View Answer
156) An evolutionary pattern characterized by a rapid increase in the number and kinds of closely related species is called

A)

convergent evolution

B)

divergent evolution

C)

adaptive radiation

D)

Both and

View Answer
157) The lateral hearts in earthworm have

A)

four pairs of valves and are situated in segments 7 and 9

B)

four pairs of valves and are situated in segments 6 and 8

C)

three pairs of valves and are situated in segments 8 and 10

D)

two pairs of valves and are situated in segments 6 and 11

View Answer
158) Which of the following is an exclusively echinoderm character?

A)

Radial symmetry

B)

Tube feet

C)

Mesodermal endoskeleton

D)

Coelom divided

View Answer
159) In the clotting mechanism pathway, thrombin activates factors

A)

XI, VIII, V

B)

XI, IX, X

C)

VIII, X, V

D)

IX, VIII, X

View Answer
160) In myasthenia gravis, acetylcholine

A)

receptors on motor end plate are reduced

B)

secretion from nerve terminals is reduced

C)

esterase activity is inhibited

D)

secretion from nerve terminals is enhanced

View Answer
161) This trace element is needed for insulin to exert its maximal effect in glucose uptake.

A)

Vanadium

B)

Chromium

C)

Molybdenum

D)

Selenium

View Answer
162) Immunoglobulins are proteins that show...... structure.

A)

primary

B)

secondary

C)

tertiary

D)

quaternary

View Answer
163) The cell membranes of adjacent cells are fused at this cell junction.

A)

Macula adherens

B)

Zonula adherens

C)

Zonula occludens

D)

Nexus

View Answer
164) Recently attempts are being made to reintroduce tigers in this famous National Park.

A)

Corbett

B)

Bandhavgarh

C)

Sariska

D)

Kanha

View Answer
165) The phenomenon of torsion occurs in

A)

Gastropoda

B)

Pelecypoda

C)

Cephalopoda

D)

Amphineura

View Answer
166) In humans, the oocyte is maintained in a state of meiotic arrest by secretions of

A)

granulosa cells

B)

zona pellucida

C)

cumulus oophorus

D)

theca

View Answer
167) Animals that rely on the heat from the environment, rather than of metabolism, to raise their body temperature are in the strict sense, called

A)

ectothermic

B)

poikilothermic

C)

homeothermic

D)

endothermic

View Answer
168) During the past 150 years, the concentration of \[C{{O}_{2}}\]has increased approximately from

A)

200 ppm to 300 ppm

B)

120 ppm to 280 ppm

C)

280 ppm to 370 ppm

D)

350 ppm to 450 ppm

View Answer
169) Which of the following sequences will be produced as a result of transcription of the DNA sequence CGATTACAG?

A)

GCUAAUGUC

B)

CGUAAUCUG

C)

GCTAATGTC

D)

GCUAATCTG

View Answer
170) Which statement is incorrect?

A)

Mast cells and basophils secrete histamine and heparin

B)

Mast cells are long lived, basophils are short lived

C)

Mast cells are smaller than basophils with a bilobed nucleus

D)

Mast cells are relatively sessile, basophils are mobile

View Answer
171) Between breaths, the intra pleural pressure is approximately ...... mm Hg less than atmospheric pressure.

A)

1

B)

4

C)

8

D)

10

View Answer
172) Microscopic aquatic organisms lacking locomotory ability and drifting with the water currents are

A)

planktons

B)

nektons

C)

pleustons

D)

sestons

View Answer
173) The vestiges of girdles are found in

A)

cobra

B)

krait

C)

rattle snake

D)

python

View Answer
174) Which is a 32-amino acid water soluble peptide hormone?

A)

Gastrin

B)

Calcitonin

C)

Glucagon

D)

Insulin

View Answer
175) Essential and non-essential amino acid is

A)

lysine and leucine

B)

methionine and threonine

C)

valine and tyrosine

D)

alanine and cystine

View Answer
176) Maintenance of body potassium levels is primarily by tubular

A)

absorption in PCT

B)

secretion in DCT and cortical collecting duct

C)

absorption in DCT

D)

secretion in PCT

View Answer
177) In ecological succession, the climax community is best recognized by the following state.

A)

P = R

B)

P > R

C)

P < R

D)

P\[\ne \]R

View Answer
178) The third ventricle of the brain is situated in the

A)

base of telencephalon

B)

roof of metencephalon

C)

roof of diencephalon

D)

base of myelencephalon

View Answer
179) The vibrations of the tympanic membrane are amplified approximately...... times in the oval window.

A)

5

B)

20

C)

40

D)

55

View Answer
180) The energy content in kcal/g of carbohydrate, protein and triglycerol respectively is approximately in the ratio of

A)

1 : 2 : 2

B)

1 : 1 : 2

C)

2 : 1 : 1

D)

2 : 2 : 1

View Answer
181) Originating in bone marrow, circulating in blood for 1 to 2 days, migrating to connective tissue and forming macrophages is a characteristic of

A)

eosinophils

B)

basophils

C)

monocytes

D)

lymphocytes

View Answer
182) In a polluted environment, the maximum pollutant will occur in

A)

primary producers

B)

tertiary consumers

C)

secondary consumers

D)

primary consumers

View Answer
183) The optic lobes in humans are represented by the corpora

A)

bigemina

B)

arenacea

C)

striata

D)

quadrigemina

View Answer
184) Parathormone influences calcium absorption in the small intestine by regulating the metabolism of

A)

vitamin- C

B)

vitamin- D

C)

vitamin-\[{{B}_{6}}\]

D)

enterogasterone

View Answer
185) Which of the following is not an effect of the sympathetic nervous system?

A)

Dilation of pupil

B)

Inhibition of peristalsis

C)

Elevation of blood pressure

D)

Stimulation for saliva secretion

View Answer
186) RNA polymerase- II is responsible for transcription of

A)

rRNA

B)

hnRNA

C)

cRNA

D)

snRNA

View Answer
187) Disappearance of the tadpole tail during metamorphosis, is brought about by

A)

endoplasmic reticulum

B)

Golgi bodies

C)

lysosomes

D)

peroxisomes

View Answer
188) The forward stereoscopic visual field will be the greatest in

A)

cat

B)

deer

C)

rabbit

D)

horse

View Answer
189) This gastrointestinal hormone stimulates insulin secretion.

A)

Gastrin

B)

CCK

C)

Secretin

D)

GIP

View Answer
190) The volume and surface area of a deer is 1,50,000 cm3 and 19,000 cm2 and of a squirrel is 625 cm3 and 530 cm2. The area available for heat loss per cm3 volume of the squirrel will be approximately

A)

seven times more than the deer

B)

five times less than the deer

C)

three times more than the deer

D)

eleven times more than the deer

View Answer
191) The loss of energy as one proceeds from one trophic level to the next higher level is approximately

A)

30 per cent

B)

40 per cent

C)

60 per cent

D)

90 per cent

View Answer
192) This is not a nitrogenous waste.

A)

Creatinine

B)

Purine

C)

Allantoin

D)

Citrulline

View Answer
193) Immediate hypersensitivity which result in the release of histamine and other inflammatory substances is mediated by

A)

IgA

B)

IgD

C)

IgE

D)

IgG

View Answer
194) The direction of light striking the retina will be

A)

photosensory cells \[\to \] bipolar neurons \[\to \] ganglionic cells \[\to \] sensory nerves

B)

sensory nerves \[\to \] bipolar neurons \[\to \]ganglionic cells\[\to \]photosensory cells

C)

sensory nerves\[\to \]ganglionic cells\[\to \]bipolar neurons\[\to \]photosensory cells

D)

photosensory cells\[\to \]ganglionic cells\[\to \] bipolar neurons \[\to \] sensory nerves

View Answer
195) In the mouth parts of cockroach, the galea and lacinia form parts of the

A)

mandible

B)

maxilla

C)

labium

D)

labrum

View Answer
196) In a disaccharide, two monosaccharides are linked by a ... bond.

A)

hydrogen

B)

disulphide

C)

glycosidic

D)

ionic

View Answer
197) In human beings, the cranium is formed by

A)

eight bones of which two are paired

B)

fourteen bones of which six are paired

C)

ten bones of which two are paired

D)

twelve bones of which four are paired

View Answer
198) This sensory structure responds to pressure change.

A)

Meissners corpuscle

B)

Pacinian corpuscle

C)

End bulb of Krause

D)

Organ of Ruffini

View Answer
199) Which statements is true about the venous blood vessels of frog?

A)

Lingual and submandibular unite to form the internal jugular

B)

Musculo-cutaneous and brachial unite to form the subclavian

C)

The ventral abdominal vein drains into the posterior vena cava

D)

The pelvic veins unite to form the renal portal vein

View Answer
200) This is the common passage for bile and                pancreatic juices.

A)

Ampulla of Vater

B)

Ductus Choledochus

C)

Duct of Wirsung

D)

Duct of Santorini

View Answer

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