Solved papers for AMU Medical AMU Solved Paper-2013

AMU Solved Paper-2013 Total Questions - 200

1) Water is moving with a speed of 5.0 m/s through a pipe with a cross area of 4.0 \[c{{m}^{2}}\]. The water gradually descends 10 m as the pipe increases to 8.0 \[c{{m}^{2}}\]. If the pressure at the upper level is \[1.5\times {{10}^{5}}\] Pa, the pressure lower level will be

A)

\[2.8\times {{10}^{5}}\] Pa

B)

\[2.6\times {{10}^{5}}\] Pa

C)

\[2.4\times {{10}^{5}}\] Pa

D)

\[2.1\times {{10}^{5}}\] Pa

View Answer
2) Starting with the same initial conditions, an ideal gas expands from volume \[{{V}_{2}}\] in three different ways. The work done by the gas is \[{{W}_{1}}\]if the process purely isothermal, \[{{W}_{2}}\] if purely isobaric and \[{{W}_{3}}\] if purely adiabatic. Then

A)

\[{{W}_{2}}>{{W}_{1}}>{{W}_{3}}\]

B)

\[{{W}_{2}}>{{W}_{3}}>{{W}_{1}}\]

C)

\[{{W}_{1}}>{{W}_{2}}>{{W}_{3}}\]

D)

\[{{W}_{1}}>{{W}_{3}}>{{W}_{2}}\]

View Answer
3) 1 mole of an ideal gas expands isothermally so that its pressure falls \[1.05\times {{10}^{5}}\] Pa to \[0.5\times {{10}^{5}}\] Pa. The change in entropy of the gas is equal to

A)

0

B)

0.693 J/K

C)

5.76 J/K

D)

None of these

View Answer
4) In the given figure container A holds an ideal gas at a pressure of \[50\times {{10}^{5}}\] Pa and a temperature of 300 K. It is connected by a thin tube (and a closed) container B, with four times the volume of A. Container B holds same at a pressure of \[1.0\times {{10}^{5}}\] Pa and a temperature of 400 K. The valve is open allow the pressures to equalize, but the temperature of each container constant at its initial value. The final pressure in the two containers will be to

A)

\[1.5\times {{10}^{5}}\] Pa

B)

\[2.5\times {{10}^{5}}\] Pa

C)

\[2.1\times {{10}^{5}}\] Pa

D)

\[3.5\times {{10}^{5}}\] Pa

View Answer
5) Water standing in the open at \[{{32}^{o}}C\]evaporates because of the escape of some of the surface mole cuels. The heat of vaporisation (540 cal/g) is approximately equal to \[\varepsilon \] n, where \[\varepsilon \] is the average energy of the escaping molecules and n is the number of molecules per gram. The value of \[\varepsilon \] is close to

A)

\[1.62\times {{10}^{-20}}J\]

B)

\[4.23\times {{10}^{-20}}J\]

C)

\[6.75\times {{10}^{-20}}J\]

D)

\[8.31\times {{10}^{-20}}J\]

View Answer
6) A vessel contains a mixture of 1 mole of oxygen and two moles of nitrogen at 300 K. The ratio of the rotational kinetic energy per \[{{O}_{2}}\]molecule to that per \[{{N}_{2}}\] molecule is

A)

1 : 2

B)

2 : 1

C)

1 : 1

D)

depends on the moment of inertia of the two molecules

View Answer
7) An oscillator consists of a block attached to a spring (k = 400 N/m). At some time t, the position (measured from the systems equilibrium location), velocity and acceleration of the block are \[x=0.100\,m,\,v=-15.0\,m/s\], and\[a=-90\,m/{{s}^{2}}\]. The amplitude of the motion and the mass of the block are

A)

0.2 m, 0.84 kg

B)

0.3 m, 0.76 kg

C)

0.4 m, 0.54 kg

D)

0.5 m, 0.44 kg

View Answer
8) An organ pipe A, with both ends open, has fundamental frequency 300 Hz. The third harmonic of another organ pipe B, with one end open, has the same frequency as the second harmonic of pipe A. The lengths of pipe A and B are (speed of sound in air = 343 m/s)

A)

57.2 cm and 42.9cm

B)

57. 2 cm and 45.8 cm

C)

42.9 cm and 32.2 cm

D)

42.9 cm and 34.0 cm

View Answer
9) The transverse displacement of a string fixed at both ends is given by\[y=0.6\sin \left( \frac{2\pi x}{3} \right)\cos \,(120\,\pi t)\] where \[x\]and y are in metres and t is in seconds. The length of the string is 1.5 m and its mass is\[3.0\times {{10}^{-2}}kg\]. The tension in the string is equal to

A)

648 N

B)

724 N

C)

832 N

D)

980 N

View Answer
10) A capacitor of capacity \[{{C}_{1}}=3.5\,\mu F\] is charged to a potential difference \[{{V}_{0}}=6.0\,V\] using a battery. The battery is then removed and the capacitor connected using a switch S, as shown in the figure, to an uncharged capacitor of capacity \[{{C}_{2}}=6.5\,\mu F\]. The total final energy of the two capacitors after they are connected together then the charges \[\left| {{q}_{1}} \right|\] and \[\left| {{q}_{2}} \right|\] on the capacitors shall be

A)

\[63\mu j,\left| {{q}_{1}} \right|=7.35\mu C\] and \[\left| {{q}_{2}} \right|=13.65\mu C\]

B)

\[22\mu j,\left| {{q}_{1}} \right|=10.5\mu C\] and \[\left| {{q}_{2}} \right|=10.5\mu C\]

C)

\[22\mu j,\left| {{q}_{1}} \right|=13.65\mu C\] and \[\left| {{q}_{2}} \right|=13.65\mu C\]

D)

\[22\mu j,\left| {{q}_{1}} \right|=13.65\mu C\] and \[\left| {{q}_{2}} \right|=7.35\mu C\]

View Answer
11) Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of 0.108 N when separated by 50.0 cm, center to center. The spheres are then connected by a thin conducting wire. When the wire is removed the spheres repel each other with an electrostatic force of 0.0360 N. The initial charges on the spheres were

A)

\[9\times {{10}^{-6}}C,\,-3\times {{10}^{-6}}C\]

B)

\[1\times {{10}^{-6}}C,\,-3\times {{10}^{-6}}C\]

C)

\[-3\times {{10}^{-6}}C,\,\,\,2\times {{10}^{-6}}C\]

D)

\[1\times {{10}^{-6}}C,-\,2\times {{10}^{-6}}C\]

View Answer

12) A non-conducting sphere of radius a has a net charge + q uniformly distributed throughout its volume. A spherical conducting shell having inner and outer, radii b and c and a net charge -q is concentric with the sphere (see the figure). | Read the following statements

(i) The electric field at a distance r from the center of the sphere for \[r<a=\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{qr}{{{a}^{3}}}\]

(ii) The electric field at distance r for \[a<r<b=0\]

(iii) The electric field at distane r for \[b<r<c=0\] (iv) The charge on the inner surface of the spherical shell \[=-q\] (v) The charge on the outer surface of the spherical shell \[=+q\] Which of the above statements are true?

(i) (ii) and (v)

(i), (iii) and (iv)

(ii), (iii) and (iv)

(ii), (iii) and (v)

View Answer

13) A thin glass rod is bent into a semi circle of radius r. A charge + q is uniformly distributed along the upper half and a charge - q is uniformly distributed along the lower half, as shown in the figure. The magnitude and direction of the electric field E produced at P, the centre of the circle, will be

A)

0

B)

\[\frac{q}{{{\varepsilon }_{0}}{{\pi }^{2}}{{r}^{2}}}\] perpendicular to the line OP and directed downward

C)

\[\frac{q}{{{\varepsilon }_{0}}\pi {{r}^{2}}}\] perpendicular to the line OP and directed downward

D)

\[\frac{q}{{{\varepsilon }_{0}}\pi {{r}^{2}}}\] along the axis OP

View Answer
14) A particle of positive charge Q is fixed at point P. A second particle of mass m and negative charge - q moves at constant speed in a circle of radius \[{{r}_{1}}\], centered at P. The work W that must be done by an external agent on the second particle to increase the radius of the motion to \[{{r}_{2}}\], is given by

A)

\[W=\frac{Qq}{8\pi {{\varepsilon }_{0}}}\left( \frac{1}{{{r}_{2}}}-\frac{1}{{{r}_{1}}} \right)\]

B)

\[W=\frac{Qq}{8\pi {{\varepsilon }_{0}}}\left( \frac{1}{{{r}_{1}}}-\frac{1}{{{r}_{2}}} \right)\]

C)

\[W=\frac{Qq}{4\pi {{\varepsilon }_{0}}}\left( \frac{1}{{{r}_{2}}}-\frac{1}{{{r}_{1}}} \right)\]

D)

\[W=\frac{Qq}{4\pi {{\varepsilon }_{0}}}\left( \frac{1}{{{r}_{1}}}-\frac{1}{{{r}_{2}}} \right)\]

View Answer
15) When 115 V is applied across a wire that is 10 m long and has a 0.30 mm radius, the current density is \[1.4\times {{10}^{4}}\,A/{{m}^{2}}\]. The resistivity of the wire is

A)

\[2.0\times {{10}^{-4}}\Omega \,-m\]

B)

\[4.1\times {{10}^{-4}}\Omega \,-m\]

C)

\[8.2\times {{10}^{-4}}\Omega \,-m\]

D)

\[2.0\times {{10}^{-3}}\Omega \,-m\]

View Answer
16) In the potentiometer circuit shown in the figure, the balance length AJ = 58 when switch S is open. When switch S is closed and the value of \[R=5\,\Omega \], balance length AJ = 50 cm. The internal resistance of the cell C is

A)

\[1.2\,\,\Omega \]

B)

\[1.0\,\,\Omega \]

C)

\[0.8\,\,\Omega \]

D)

\[0.6\,\,\Omega \]

View Answer
17) Figure shows a circuit with three ideal batteries in it. The circuit elements have the following values \[\Delta {{V}_{{{B}_{1}}}}=3.0\,V\], \[\Delta {{V}_{{{B}_{2}}}}=6.0\,V\] \[{{R}_{1}}=2.0\,\,\Omega ,\,\,{{R}_{2}}=4.0\,\,\Omega \] The currents \[{{i}_{1}},{{i}_{2}}\] and \[{{i}_{3}}\] as shown in the circuit have the values

A)

0.50 A, - 0.25 A, + 0.25 A

B)

0.25 A, - 0.50 A, - 0.25 A

C)

0.50 A, 0.50 A, 1,0 A

D)

- 0.25 A, - 0.50 A, 0.25 A

View Answer
18) The wire in the figure carries a current i and consists of a circular arc of radius R and central angle \[\frac{\pi }{2}\] rad, and two straight sections whose extensions intersect the center C of the arc. The magnetic field B that the current produces at C is

A)

\[\left| B \right|=\frac{{{\mu }_{0}}i}{8R}\] into the plane of the figure

B)

\[\left| B \right|=\frac{{{\mu }_{0}}i}{8R}\] out of the plane of the figure

C)

\[\left| B \right|=\frac{{{\mu }_{0}}i}{8\pi R}\] in to the plane of the figure

D)

\[\left| B \right|=\frac{{{\mu }_{0}}i}{8\pi R}\] out of the plane of the figure

View Answer
19) Figure shows a conducting loop consisting of a half-circle of radius r= 0.20m and three straight sections. The half-circle lies in a uniform magnetic field B that is directed out of the page, the field magnitude is given by \[B=(4.0\,T/{{s}^{2}}){{t}^{2}}+(2.0\,T/s)t+3.0\,T\] An ideal battery with \[{{\varepsilon }_{0}}=2.0\,V\] is connected to the loop. The resistance of the loop is \[2.0\,\Omega \]. The current in the loop at \[t=10\,s\] will be close to

A)

                3.6 A

B)

                1.6 A

C)

6.2 A

D)

4.2 A

View Answer
20) A current I flows along the length of an infinity long, straight, thin walled pipe. Then

A)

the magnetic field at all points inside the pipe is the same but not zero

B)

the magnetic field at any point ins die the pipe is zero

C)

the magnetic field is zero only on the axis of the pipe

D)

the magnetic field is different at different points ins die the pipe

View Answer
21) Two particles each of mass m and charge g are attached to the two ends of a light rigid rod of length \[2l\]. The rod is rotated at constant   angualr speed about a perpendicular axis passing through its centre. The ratio of the magnitudes of the magnetic moment of the system and its angular momentum about the centre of the rod is

A)

\[\frac{q}{\pi m}\]

B)

\[\frac{q}{m}\]

C)

\[\frac{2q}{m}\]

D)

\[\frac{q}{2m}\]

View Answer
22) A \[1.5\,\mu F\] capacitor is charged to 60 V. The charging battery is then disconnected and a 15 mH coil is connected in series with the capacitor so that LC oscillations occur. Assuming that the circuit contains no resistance, the maximum current in the coil shall be close to

A)

1.4 A

B)

1.2 A

C)

0.8 A

D)

0.6 A

View Answer
23) Figure shows a seris L-C-R circuit with\[R=200\,\,\Omega ,\,C=15.0\,\,\mu F\] and L = 230 mH. If\[\varepsilon =36.0\sin 120\,\pi t\], the amplitude \[{{I}_{0}}\] of the current i in the circuit is close to

A)

109mA

B)

126mA

C)

150mA

D)

164mA

View Answer
24) The magnetic component of a polarised wave of light is \[{{B}_{x}}=(4.0\times {{10}^{-4}}T)\sin [1.57\times {{10}^{7}}{{m}^{-1}})y+\omega t)\] The intensity of light is

A)

\[1.9\,kW/{{m}^{2}}\]

B)

\[3.8\,kW/{{m}^{2}}\]

C)

\[5.7\,kW/{{m}^{2}}\]

D)

\[7.6\,kW/{{m}^{2}}\]

View Answer
25) An object and its real image are located at distances 25 cm and 40 cm respectively from the two principal foci of a convex lens. The linear magnification of the image is near to

A)

+ 1.3

B)

- 1.3

C)

+ 1.8

D)

-1.8

View Answer
26) A glass plate of refractive index 1.5 is coated with a thin layer of thickness t and refractive index 1.8. Light of wavelength 648 nm travelling in air is incident normally on the layer. It is partly reflected at upper and lower surfaces of the layer and the two reflected rays interfere. The least value of t for which the rays interfere constructively is

A)

30 nm

B)

60 nm

C)

90 nm

D)

120nm

View Answer
27) Energy of a photon whose de-Broglie wavelength is equal to the wavelength of an electron accelerated through a potential difference of 125 V is near to

A)

11.5eV

B)

11.5keV

C)

125eV

D)

1250eV

View Answer
28) Two radioactive materials \[{{X}_{1}}\] and \[{{X}_{2}}\] have decay constant \[6\lambda \] and \[3\lambda \] respectively. If initially they have the same number of nuclei, then the ratio of the number of nuclei of \[{{X}_{1}}\] to that of \[{{X}_{2}}\] will be \[\frac{1}{e}\] after a time

A)

\[\frac{1}{6\lambda }\]

B)

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

C)

\[\frac{3}{6\lambda }\]

D)

\[\frac{6}{9\lambda }\]

View Answer
29) The ionizing power and the penetration range of radioactive radiations increase in the order

A)

\[\gamma ,\beta ,\alpha \] and \[\gamma ,\beta ,\alpha \] respectively

B)

\[\gamma ,\beta ,\alpha \] and \[\alpha ,\beta ,\gamma \] respectively

C)

\[\alpha ,\beta ,\gamma \] and \[\alpha ,\beta ,\gamma \] respectively

D)

\[\alpha ,\beta ,\gamma \] and \[\gamma ,\beta ,\alpha \] respectively

View Answer
30) A 24 V, 600 mW zener diode is used to provide a 24 V stabilized supply to a variable load \[{{R}_{L}}\], as shown in the figure. The value of the resistance R is

A)

\[320\,\,\Omega \]

B)

\[640\,\,\Omega \]

C)

\[960\,\,\Omega \]

D)

\[1280\,\,\Omega \]

View Answer
31) In an n-p-n transistor circuit, the collector current is 10 mA. If 90% of the electrons emitted reach the collector

A)

the emitter current will be nearly 9 mA and the base current will be nearly 1 mA

B)

the emitter current will be nearly 11 mA and the base current will be nearly 9 mA

C)

the emitter current will be nearly 11 mA and the base current will be nearly 1 mA

D)

the emitter and base currents will be 10 mA and 1 mA respectively

View Answer
32) Three circuit connections of a p-n-p transistor are given below                  Which of the above represents the common emitter configuration?

A)

(i)

B)

(ii)

C)

(iii)

D)

None of the above

View Answer
33) The dimensions of the quantity E \[\times \] B where E represents the electric field and B the magnetic field may be given as

A)

\[M{{T}^{-3}}\]

B)

\[{{M}^{2}}L{{T}^{-5}}{{A}^{-2}}\]

C)

\[{{M}^{2}}L{{T}^{-3}}{{A}^{-1}}\]

D)

\[ML{{T}^{-2}}{{A}^{-2}}\]

View Answer
34) Particle A moves along the line \[y=4\sqrt{3}\,m\] with constant velocity v of magnitude 2.0 m/s and directed parallel to the positive re-axis (see figure). Particle B starts at the origin with zero speed and constant accelerationa (of magnitude \[4.0\,m/{{s}^{2}}\]) at the same instant that the particle A passes the y axis. The angle \[\theta \] between a and the positive y axis that would result in a collision between these two particles should have a value equal to

A)

\[{{30}^{o}}\]

B)

\[{{45}^{o}}\]

C)

\[{{50}^{o}}\]

D)

\[{{60}^{o}}\]

View Answer
35) In 1.0 s, a particle goes from point A to B, moving in a semi-circle of radius 1.0 m (as shown in the figure). The magnitude of the average velocity of the particle is

A)

3.14 m/s

B)

2.0 m/s

C)

1.0 m/s

D)

0

View Answer
36) A ball of mass 100 g is projected vertically upwards from the ground with a velocity of 49 m/s. At the same time another identical ball is dropped from a height of 98 m to fall freely along the same path as followed by the first ball. After sometime the two balls collide and stick together. The velocity of the combined mass just after the collision is

A)

4.9 m/s upward

B)

4.9 m/s downward

C)

9.8 m/s upward

D)

9.8 m/s downward

View Answer
37) Two blocks of masses 2.9 kg and 1.9 kg are suspended from a rigid support S by two inextensible wires each of length 1 m (figure). The upper wire has negligible mass and the lower wire has a uniform mass of 0.2 kg/m. The whole system of blocks, wires and support have an upward accelration of \[0.2\,m/{{s}^{2}}\]. The tension at the mid-point of the upper wire is

A)

20 N

B)

30 N

C)

40 N

D)

50 N

View Answer
38) A 40 kg slab rests on a frictionless floor. A 10 kg block rests on top of the slab (as shown in the figure). The coefficient of static friction \[{{\mu }_{s}}\]between the block and the slab is 0.60, whereas their kinetic friction coefficient \[{{\mu }_{k}}\] is 0.40. The 10 kg block is pulled by a horizontal force (100.0 N) i. The resulting accelerations of the block and slab will be

A)

\[(2.0\,m/{{s}^{2}})\,i,0\]

B)

\[(2.0\,m/{{s}^{2}})\,i,-(2.0\,m/{{s}^{2}})\,i\]

C)

\[(6.0\,m/{{s}^{2}})\,i,-(1.0\,m/{{s}^{2}})\,i\]

D)

\[(4.0\,m/{{s}^{2}})\,i,0\] (Take \[g=10\,m/{{s}^{2}}\])

View Answer
39) A 140 g ball, in horizontal flight with a speed \[{{\upsilon }_{1}}\]of 39.0 m/s, is struck by a bat. After leaving the bat, the ball travels in the opposite direction with speed \[{{\upsilon }_{2}}=39.0\,m/s\]. If the impact time \[\Delta t\] for the ball-bat collision is 1.20 ms, what average net force acts on the ball?

A)

1308 N

B)

1090 N

C)

9100 N

D)

980 N

View Answer
40) A horizontal cable accelerates a package across a frictionless horizontal floor. The amount of work that has been done by the cables force on the package is given by \[W(t)=(0.20\,J/{{s}^{2}})\,{{t}^{2}}\]. The average power < P > due to cables force in the time interval \[t=5\,s\] to \[{{t}_{2}}=10\,s\] and the instantaneous power at t = 3 s are

A)

2.0 W, 1.80 W

B)

2.0 W, 1.20W

C)

3.0 W, 1.80W

D)

3.0W, 1.20W

View Answer
41) A body of mass 2.0 kg makes an elastic collision with another body at rest and continues to move in the original direction but with one-fourth of its original speed\[\upsilon \]. What is the mass of the other body and the speed of the two body center of mass?

A)

1.0kg and \[\frac{2}{3}v\]

B)

1.2 kg and \[\frac{5}{8}v\]

C)

1.4 and \[\frac{10}{17}v\]

D)

1.5 kg and \[\frac{4}{7}v\]

View Answer
42) Figure gives the acceleration of a 2.0 kg body as it moves from rest along x axis while a variable force acts on it from \[x=0\,m\] to\[x=9\,m\]. The work done by the force on the body when it reaches (i) \[x=4\,m\] and (ii) \[x=7\,m\] shall be as given below

A)

21 J and 33 J respectively

B)

21 J and 15 J respectively

C)

42 J and 60 J respectively

D)

42 J and 30 J respectively

View Answer
43) The U shaped object shown in the figure has outside dimensions of 100 mm each side and each of its three sides is 20 mm wide. The respective values of the X, Y and Z coordinates of the center of mass of the object will be close to

A)

(50, 50, 3) mm

B)

(50, 50, 6) mm

C)

(50, 38, 3) mm

D)

(50, 41, 3) mm

View Answer
44) Two particles each of mass m and velocity v are travelling in the same direction along two parallel lines, in the plane of the paper, separated by a distance d. A and B are two points on their lines of motion and C is a point midway between the two lines (as shown in the figure). Read the following statements The magnitude of the total angular momentum of the two-particle system around the point A will be mvd The magnitude of the total angular momentum of the system around the point B will be mvd The magnitude of the vector sum of angular momenta of the system around points A and B shal be zero The magnitude of the angular momentum of the system around C will be zero Which of the above statements is/are correct?

A)

(i) and (ii) only

B)

(iii) only

C)

(iii) and (iv) only

D)

(i), (ii), (iii) and (iv)

View Answer
45) Three thin metal rods, each of mass M and length L, are welded to form an equilateral triangle. The moment of inertia of the composite structure about an axis passing through the centre of mass of the structure and perpendicular to its plane is

A)

\[\frac{1}{2}M{{L}^{2}}\]

B)

\[\frac{1}{3}M{{L}^{2}}\]

C)

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

D)

\[\frac{1}{4}M{{L}^{2}}\]

View Answer
46) Three uniform spheres, with masses \[{{m}_{A}}=350\,kg,\] \[{{m}_{B}}=2000\,kg,\] and \[{{m}_{C}}=500\,kg\]have the (x, y) coordinates (0, 0) cm, (- 80, 0) cm and (40, 0) cm respectively. The gravitational potential energy, U, of the system and change in its value in terms of increase or decrease, if the sphere of mass is removed, may be given as

A)

\[U=-1.92\times {{10}^{-4}}J\] and its value shall decrease if the sphere B is removed

B)

\[U=-1.92\times {{10}^{-4}}J\] and its value shall increase if the sphere B is removed

C)

\[U=-1.43\times {{10}^{-4}}J\] and its value shall decrease if mg is removed

D)

\[U=-1.43\times {{10}^{-4}}J\] and its value shall increase if \[{{m}_{B}}\] is removed

View Answer
47) The figure shows a spherical hollow inside a lead sphere of radius J ?; the surface of the hollow passes through the center of the sphere and touches the right side of the sphere. The mass of the sphere before hollowing was M. With what gravitatioinal force does the hollowed-out lead sphere attract a small sphere of mass m that lies at a distance d from the center of the lead sphere, on the straight line connecting the centers of the spheres and of the hollow?

A)

\[\frac{GMm}{{{d}^{2}}}\left[ 1-\frac{1}{8{{\left( 1-\frac{R}{2d} \right)}^{2}}} \right]\]

B)

\[\frac{GMm}{{{d}^{2}}}\left[ 1+\frac{1}{8{{\left( 1-\frac{R}{2d} \right)}^{2}}} \right]\]

C)

\[\frac{GMm}{{{d}^{2}}}\left[ 1-\frac{1}{4{{\left( 1+\frac{R}{2d} \right)}^{2}}} \right]\]

D)

\[\frac{GMm}{{{d}^{2}}}\left[ 1-\frac{1}{8{{\left( 1+\frac{R}{2d} \right)}^{2}}} \right]\]

View Answer
48) A uniform wire of cross-sectional area A and Youngs modulus Y is stretched within the elastic limit. If S is the stress in the wire, the elastic energy density stored in the wire in terms of the given parameters is

A)

\[\frac{S}{2Y}\]

B)

\[\frac{2Y}{{{S}^{2}}}\]

C)

\[\frac{{{S}^{2}}}{2Y}\]

D)

\[\frac{{{S}^{2}}}{Y}\]

View Answer
49) A U-tube contains two liquids in static equilibrium: Water of density \[{{\rho }_{w}}(=1000\,kg/{{m}^{3}})\] is in the right arm and oil of unknown density \[\rho \] is in the left arm as shown in the figure. Measurement gives \[l=135\,mm\] and \[d=12.5\,mm\]. The density of oil is

A)

1092 \[kg/{{m}^{3}}\]

B)

961 \[kg/{{m}^{3}}\]

C)

915 \[kg/{{m}^{3}}\]

D)

843 \[kg/{{m}^{3}}\]

View Answer
50) Two spheres A and B having radii of 3 cm and 5 cm respectively are coated with carbon black on their outer surfaces. The wavelengths of radiations corresponding to maximum intensity of emission are 300 nm and 500 nm respectivley. The respective powers radiated by them are in the ratio of

A)

\[\sqrt{\frac{5}{3}}\]

B)

\[\frac{5}{3}\]

C)

\[{{\left( \frac{5}{3} \right)}^{2}}\]

D)

\[{{\left( \frac{5}{3} \right)}^{4}}\]

View Answer
51) The structure of diamagnetic nickel complex, \[{{[Ni{{(CN)}_{4}}]}^{2-}}\]is

A)

trigonal bipyramidal

B)

tetrahedral

C)

square planar

D)

distorted octahedral

View Answer
52) The known oxidation states for both V and CO are

A)

+2, +3, +4, +5

B)

+2, +3, +4, +5, +6

C)

+2, +3, +4

D)

+2, +3

View Answer
53) The expression for effective magnetic moment \[({{\mu }_{eff}})\] is

A)

\[{{\mu }_{eff}}=\sqrt{n(n+2)}\,BM\]

B)

\[{{\mu }_{eff}}=\sqrt{2(n+2)}\,BM\]

C)

\[{{\mu }_{eff}}=\sqrt{n(2n+2)}\,BM\]

D)

\[{{\mu }_{eff}}=\sqrt{n(n+1)}\,BM\]

View Answer
54) Laughing gas is

A)

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

B)

NO

C)

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

D)

\[{{N}_{2}}{{O}_{6}}\]

View Answer
55) Which one of the following is ferromagnetic?

A)

Co

B)

Mn

C)

At

D)

Ag

View Answer
56) What type of hybridisation is involved in the metal ion of \[{{[Ni{{({{H}_{2}}O)}_{6}}]}^{2+}}\] complex?

A)

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

B)

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

C)

\[s{{p}^{3}}\]

D)

\[ds{{p}^{2}}\]

View Answer
57) In which of the following the hydration energy is higher than the lattice energy?

A)

\[SrS{{O}_{4}}\]

B)

\[BaS{{O}_{4}}\]

C)

\[MgS{{O}_{4}}\]

D)

\[RaS{{O}_{4}}\]

View Answer
58) Which one of the following does not exist?

A)

\[{{B}_{2}}\]

B)

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

C)

\[He_{2}^{+}\]

D)

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

View Answer
59) Who proposed dual nature of electron?

A)

de-Broglie

B)

Einstein

C)

Bohr

D)

Heisenberg

View Answer
60) The oxyacid of sulphur that contains a lone pair of electrons on sulphur is

A)

sulphurous acid

B)

sulphuric acid

C)

peroxodisulphuric acid

D)

pyrosulphuric acid

View Answer
61) The complex showing a spin only magnetic moment of 2.82 BM is

A)

\[[Ni{{(CO)}_{4}}]\]

B)

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

C)

\[[Ni{{(PP{{H}_{3}})}_{4}}]\]

D)

\[{{[Ni{{(CN)}_{4}}]}^{2-}}\]

View Answer
62) In which of the following molecule/ion, all the bonds are not equal?

A)

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

B)

\[BF_{4}^{-}\]

C)

\[{{C}_{2}}{{H}_{4}}\]

D)

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

View Answer
63) The correct order of electron gain enthalpy with negative sign of F, Cl, Br, and I, having atomic number 9,17,35 and 53 respectively, is

A)

\[F>Cl>Br>I\]

B)

\[Cl>F>Br>I\]

C)

\[Br>Cl>I>F\]

D)

\[I>Br>Cl>F\]

View Answer
64) Which of the following is the weakest base?

A)

\[Ca{{(OH)}_{2}}\]

B)

KOH

C)

\[Li(OH)\]

D)

\[Sr{{(OH)}_{2}}\]

View Answer
65) Identify the positively charged

A)

Hemoglobin (Blood)

B)

\[A{{s}_{2}}{{S}_{3}}\]

C)

Clay

D)

Gold sols

View Answer
66) The following is an intensive property of a system

A)

total mass

B)

total energy

C)

volume

D)

energy \[mo{{l}^{-1}}\]

View Answer
67) Principle of paper chromatography is based on

A)

solid-liquid partition chromatography

B)

liquid-partition chromatography

C)

liquid-solid adsorption chromatography

D)

liquid-liquid sorption chromatography

View Answer
68) Predict the correct shape of \[BH_{4}^{-}\].

A)

Pyramidal, \[s{{p}^{3}}\]

B)

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

C)

Tetrahedral, \[s{{p}^{3}}\]

D)

None of these

View Answer
69) The degree of ionisation of HF in 0.100 M aqueous solution is (freezing point of the solution \[=-{{0.197}^{o}}C\] and \[{{K}_{f}}\] for water \[={{186}^{o}}C)\]

A)

6%

B)

12%

C)

3%

D)

9%

View Answer
70) Which of the following solution has the highest boiling point?

A)

1% glucose

B)

1% NaCI

C)

1% sucrose

D)

1% \[CaC{{l}_{2}}\]

View Answer
71) The percentage of iron present as Fe(III) in \[F{{e}_{0.93}}{{O}_{1.0}}\] is

A)

8.3%

B)

9.6%

C)

11.5%

D)

17.7%

E)

                (e) None of these above

View Answer
72) Equivocal aqueous solutions of \[NaCl\] and \[BaC{{l}_{2}}\] are prepared. If the freezing point of\[NaCl\] is \[-{{2}^{o}}C\], the freezing point of \[BaC{{l}_{2}}\]solution is expected to be

A)

\[-{{2}^{o}}C\]

B)

\[-{{3}^{o}}C\]

C)

\[-{{1.5}^{o}}C\]

D)

\[-{{1.66}^{o}}C\]

View Answer
73) An ion with mass number 37 possesses one unit of negative charge. If ion contains 11.1% more neutrons than electrons, the symbol of the ion, X, is

A)

\[_{17}^{35}X\]

B)

\[_{17}^{35}{{X}^{\Theta }}\]

C)

                \[_{17}^{37}X\]

D)

                \[_{17}^{37}{{X}^{\Theta }}\]

View Answer
74) The pH of a 0.05 M ammonia solution is 10.97. Find the ionisation constant the conjugate acid of ammonia, \[NH_{4}^{+}\]. Given, \[p{{K}_{w}}=14.0\,{{K}_{b}}\] for ammonia,\[=1.77\times {{10}^{-5}}\]

A)

\[4.77\times {{10}^{-5}}\]

B)

\[9.77\times {{10}^{-5}}\]

C)

\[4.99\times {{10}^{-10}}\]

D)

\[5.64\times {{10}^{-10}}\]

View Answer
75) Consider two standard half cells based on the reaction \[A{{g}^{+}}(aq)+{{e}^{-}}\xrightarrow{{}}Ag(s)\] The left half cell contains \[AgN{{O}_{3}}\] at 1M, and the right half cell initially had the same cone. of \[AgN{{O}_{3}}\], but just enough \[NaCl(aq)\] has been added to complete precipitate the \[A{{g}^{+}}(aq)\] as \[AgCl(s)\]. If cell emf is 0.295 V, the \[{{K}_{sp}}\] of \[AgCl\] approximately

A)

\[1\times {{10}^{-12}}\]

B)

\[6.60\times {{10}^{-12}}\]

C)

\[1.10\times {{10}^{-10}}\]

D)

\[6.60\times {{10}^{-10}}\]

E)

                (e) None of these above

View Answer
76) Mg with its external 3s2 configuration is

A)

an insulator

B)

a conductor

C)

a semiconductor

D)

a supersonic conductor

View Answer
77) The average energy per molecule of a gas at a given temperature, T, is given by

A)

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

B)

\[\sqrt{\frac{3RT}{M}}\]

C)

\[\sqrt{\frac{8(R/{{N}_{A}})T}{\pi M}}\]

D)

\[\frac{3}{2}\left( \frac{R}{{{N}_{A}}} \right)T\]

View Answer
78) The rate of the reaction is given by rate,\[r=k\,{{[{{H}^{+}}]}^{n}}\] If the rate becomes 100 times when the pH changes from 2 to 1 the order of the reaction is

A)

0

B)

1

C)

2

D)

3

View Answer
79) Which of the following sets of quantum numbers is not possible?

A)

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

B)

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

C)

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

D)

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

View Answer
80) Methyl benzoate can be prepared by

A)

\[{{C}_{6}}{{H}_{5}}COOH+C{{H}_{3}}OH\xrightarrow{{{H}^{+}}}\]

B)

\[{{C}_{6}}{{H}_{5}}COOCl+C{{H}_{3}}OH\xrightarrow{Pyridine}\]

C)

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

D)

All of the above methods

View Answer
81) In the reaction,\[HC\equiv CH+2AgN{{O}_{3}}\xrightarrow{N{{H}_{4}}OH}\]                \[X+2N{{H}_{4}}N{{O}_{3}}+2{{H}_{2}}O\] X is

A)

\[A{{g}_{2}}C\]

B)

\[A{{g}_{2}}{{C}_{2}}\]

C)

AgC

D)

AgOH

View Answer
82) Acid anhydride on reaction with primary amines give

A)

imine

B)

\[{{2}^{o}}\]amine

C)

amide

D)

imide

View Answer
83) Which one of the following can not be made from 1-bromopropane in a single step?

A)

Propane

B)

Propene

C)

Propan-1-o1

D)

PropyI amine

E)

                (e) None of these above

View Answer
84) 5-oxohexanal is obtained by ozonolysis of

A)



B)

C)



D)



View Answer
85) Drugs that bind to the receptor site and inhibit its natural function are called

A)

antagonists

B)

agonists

C)

enzymes

D)

molecular targets

View Answer
86) Which of the following carboxylic acids undergoes decarboxylation easily?

A)

\[{{C}_{6}}{{H}_{5}}COC{{H}_{2}}COOH\]

B)

\[{{C}_{6}}{{H}_{5}}CH\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C}}\,OOH\]

C)

\[{{C}_{6}}{{H}_{5}}\underset{\begin{smallmatrix} | \\ N{{H}_{2}} \end{smallmatrix}}{\mathop{C}}\,HCOOH\]

D)

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

View Answer
87) Kjeldahl method for estimation of nitrogen is not applicable to

A)

pyridine

B)

hexamethylene diamine

C)

propan-1-amine

D)

2-phenylethanamine

View Answer
88) Which of the following reactions would give isopropylbenzene as the product? (i)                 (ii) (iii)           (iv)

A)

I and IV only

B)

II and III only

C)

II, III, IV only

D)

All of the above

View Answer
89) In which of the following resonance of \[-N{{H}_{2}}\] is possible?

A)

1-aminobutane

B)

Ethyl amine

C)

Benzyl amine

D)

p-toluidine

View Answer
90) The product obtained in the following reaction is\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-N{{H}_{2}}\xrightarrow[\Delta ]{{{P}_{2}}{{O}_{5}}}?\]

A)

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

B)

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

C)

\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}-\overset{\begin{smallmatrix} OH \\ | \end{smallmatrix}}{\mathop{C}}\,-NH\]

D)

None of the above

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

A)

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

B)

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

C)

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

D)

\[C{{H}_{3}}CON{{H}_{2}}\xrightarrow{B{{r}_{2}},\,\,NaOH}\]

View Answer
92) 2,4,6-trinitrochlorobenzene on warming with water produces

A)

chlorobenzene

B)

picric acid

C)

phenol

D)

no compound since C?Cl bond is stable

View Answer
93) Which of the following will be most readily dehydrated in acidic conditions?

A)



B)



C)



D)

View Answer
94) Wurtz reaction of methyl iodide yields an organic compound X. Which of the following reaction also yields X?

A)

\[{{C}_{2}}{{H}_{5}}Cl+LiAl{{H}_{4}}\xrightarrow{{}}\]

B)

\[{{C}_{2}}{{H}_{5}}Cl+Mg\xrightarrow{Dry\text{ }ether}\]

C)

\[{{C}_{2}}{{H}_{5}}Cl+{{C}_{2}}{{H}_{5}}ONa\xrightarrow{{}}\]

D)

\[CHC{{l}_{5}}Cl+Ag(powder)\xrightarrow{\Delta }\]

View Answer
95) Among the following amines, the strongest Bronsted base is

A)

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

B)

C)

D)

View Answer
96) Most stable radical is

A)

B)

C)

\[C{{H}_{2}}=CH\overset{\bullet }{\mathop{C}}\,{{H}_{2}}\]

D)

\[C{{H}_{2}}=\overset{\bullet }{\mathop{C}}\,H\]

View Answer
97) Which one of the following is a strong base?

A)

\[NoOH\]

B)

KOH

C)

\[Ca{{(OH)}_{2}}\]

D)

\[Mg{{(OH)}_{2}}\]

View Answer
98) The following elements belong to second transition series

A)

V, La, Ht, Ta

B)

Nb, Mo, Tc, Ru

C)

Ir, Os, Re, Ta

D)

Re, Os, Ir, Pt

View Answer
99) What is the oxidation state of Co in\[{{[Co{{({{H}_{2}}O)}_{5}}Cl]}^{2+}}?\]

A)

+ 2

B)

+3

C)

+ 1

D)

+ 4

View Answer
100) The unpaired electron in \[Ni{{(CO)}_{4}}\] is

A)

1

B)

2

C)

3

D)

0

View Answer
101) Flowering plants might have originated from

A)

chlorophyte ancestors

B)

tracheophyte ancestors

C)

Rhynia type plants

D)

psilophytes

View Answer
102) The drug marijuana is obtained from

A)

Cannabis sativa

B)

Papaver somniferum

C)

Atropa belladona

D)

Datura alba

View Answer
103) The plant disease which is not caused by a fungus is

A)

brown rust of wheat

B)

red rot of sugar cane

C)

late blight of potato

D)

black rot of crucifers

View Answer
104) In anaerobic sludge digestion during secondary treatment of sewage, biogas is produced, which is a mixture of

A)

methane \[{{H}_{2}}S\] and \[{{H}_{2}}S\]

B)

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

C)

methane, \[{{H}_{2}}S,C{{O}_{2}}\] and CO

D)

methane, \[{{H}_{2}}S,C{{O}_{2}}\], CO and ethane

View Answer
105) During amplification of gene using PCR, taq polymerase is used between

A)

denaturation and annealing

B)

annealing and extension

C)

extension and amplification

D)

None of the above

View Answer
106) Full name of professor Misra, who is known as the Father of Ecology in India is

A)

Ramesh Misra

B)

Ramavtar Misra

C)

Ramakant Misra

D)

Ramdeo Misra

View Answer
107) Detritivores break down the detritus and process is known as

A)

leaching

B)

fragmentation

C)

lumification

D)

mineralization

View Answer
108) An international treaty on ozone depletion known as Montreal Protocol was signed at Montreal in the year

A)

1981

B)

1983

C)

1985

D)

1987

View Answer
109) An ecologist uses the term biodiversity for the variety of species of

A)

all living plants

B)

all living animals

C)

Both (a) and (b)

D)

(a) ,(b) above and microbes also living in this natural habitats

View Answer
110) Knock knee syndrome occurs due to the pollution of

A)

nitrates

B)

phosphates

C)

fluorides

D)

heavy metals

View Answer
111) The fluid mosaic model of cell membrane was given by

A)

SS Singer and GL Nicholson

B)

SJ Singer and HL Nicholson

C)

SJ Singer and GL Nicholson

D)

SS Singer and GL Nicholson

View Answer
112) Hydroponics is

A)

growing plants without soil

B)

growing plants in water

C)

growing plants without matter

D)

All of the above

View Answer
113) The electron from photosystem-II goes to photosystem-I and finally taken up by NADP leaving an electron hole in photosystem-II. This electron hole in photosystem-II is filled by the electron released form

A)

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

B)

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

C)

chlorophyll

D)

light

View Answer
114) In photorespiration glycine enters from

A)

chloroptast to proxysome

B)

succinyl Co-A to succinic acid

C)

succinic acid to fumaric acid

D)

fumaric acid to malic acid

View Answer
115) In TCA cycle substrate level phosphorylation takes place during the conversion of

A)

oxaloacetic acid to citric acid

B)

succinyl Co-A to succinic acid

C)

succinic acid to fumaric acid

D)

fumaric acid to malic acid

View Answer
116) The aestivationg in corolla of Calotropis is

A)

valvate

B)

twisted

C)

imbricate

D)

vexillary

View Answer
117) The commonly found tissue in pulp of fruits like guava and in leaves of tea are

A)

collenchyma

B)

aerenchyama

C)

chlorenchyma

D)

sclereids

View Answer
118) Among various categories of threatened species the percentage of angiosperms categorised as vulnerable is about

A)

14%

B)

19%

C)

41%

D)

51%

View Answer
119) The fungus often studied in experimental genetics and also called as Drosophila of plant kingdom is

A)

Erysiphe

B)

Neurospora

C)

Rhizopus

D)

Aspergilius

View Answer
120) The correct sequence of seral stages in hydrosere is

A)

plankton, submerged, floating, reed swamp, sedge meadow, woodland

B)

plankton, floating, submerged, reed swamo, sedge meadow, woodland

C)

plankton, submerged, floating, sedge meadow, reed swamp, woodland

D)

plankton, submerged, floating, sedge meadow, woodland, reed meadow

View Answer
121) Charles Darwin returned to England in 1936 from his five year expedition but published his observation and conclusion in the form of a book in November.

A)

1938

B)

1839

C)

1859

D)

1869

View Answer
122) Several plant pathogens can be controlled by the biocontrol agent

A)

Phytophthora

B)

Trichoderma

C)

Albugo

D)

Saccharomyces

View Answer
123) Histology deals with the study of

A)

structures which can be discerned with naked eye

B)

tissues

C)

cells

D)

changes in form and structure during development

View Answer
124) The following plant placed under dicots Bt lacks cotyledons is

A)

maize

B)

Cuscuta

C)

mustard

D)

linseed

View Answer
125) Acetyl coenzyme-A can be formed through the process of

A)

glycoiysis

B)

p-oxidation of fatty acid

C)

deamination of amino acids

D)

All of the above

View Answer
126) Xanthomonas phaseoli is responsible for disease known as

A)

wilt of paper

B)

blight of beans

C)

wilt of potato

D)

canker of tomato

View Answer
127) To make soya sauce from soyabean meal the fungus used is

A)

Penicillium

B)

Aspergillus

C)

Agaricus

D)

Saccharomyces

View Answer
128) nigrum is one of the species of genus

A)

                Mangifera

B)

                Solarium

C)

Triticum

D)

Pisum

View Answer
129) Maximum modes of nutrition are found in

A)

Monera

B)

Protista

C)

Fungi

D)

Plantae

View Answer
130) Katherine Esau a world known name is plant anatomy was born in

A)

Australia

B)

Ukraine

C)

Austria

D)

UK

View Answer
131) When the margin of the thalamus grows upward enclosing ovary completely and getting fused with it while the other parts of flower arise above the ovary the ovary is said to be

A)

inferior

B)

superior

C)

half inferior

D)

half superior

View Answer
132) Non-endospermous seeds are found in

A)

bean

B)

gram

C)

pea

D)

All of these

View Answer
133) In maize seed, coleorrhiza is present adjacent to

A)

radicle

B)

plumule

C)

scutellum

D)

endosperm

View Answer
134) The word meristem is derived from Greek, meristos meaning

A)

young

B)

divided

C)

tissue

D)

tip

View Answer
135) The stele consists of

A)

endodermic, pericycle, vascular bundle and pith

B)

pericycle, vascular bundle end pith

C)

vascular bundle and pith

D)

vascular bundle only

View Answer
136) During secondary growth the amount of secondary xylem produced is more than the secondary phloem because

A)

the cambium is more active on the inner side

B)

the cambium is more active on the outer side

C)

the cambium is equally active on both sides but the xylem is needed more

D)

the cambium has no role to plays in this difference

View Answer
137) The movement of cilia and flagella is due to the presence of

A)

radial spokes

B)

central sheath

C)

singlet microtubules

D)

exonym

View Answer
138) In amino acid alanine is

A)

monoamino monocarboxylic amino acid

B)

sulphur containing amino acid

C)

monoamino dicarboxylic amino acid

D)

basic amino acid

View Answer
139) In onion root tip during metaphase stages mitosis the number of kinetic will be

A)

4

B)

8

C)

16

D)

32

View Answer
140) Apoplastic path for the transport of water I root is through

A)

intercellular spaces

B)

intercellular spaces and cell walls

C)

cell walls only

D)

intercellular spaces, cell walls and endodermis

View Answer
141) Source of mineral nutrients is

A)

soil

B)

minerals obtained from rocks

C)

rocks

D)

All of the above

View Answer
142) The two reducing powers of light reaction a used in dark reaction during the formation of

A)

3-phosphoglycerate from ribulose, 1,5-bisphosphate

B)

glyceraldehyde 3-phosphate from 3-phosphoglycerate

C)

sucrose from triose phosphate

D)

ribulose 1,5-bisphosphate from triose phosph

View Answer
143) The exponential growth can be expressed \[{{w}_{1}}={{w}_{0}}{{e}^{rt}}\] whereas e denotes

A)

growth rate

B)

time of growth

C)

base of nature logarithm

D)

final size

View Answer
144) The plant growth regulator kinetin is a/an

A)

growth derivative of purines

B)

derivative of carotenoids

C)

terpene

D)

gas

View Answer
145) Vegetative propagation in water hyacinth takes place by

A)

rhizome

B)

bulbil

C)

leaf bud

D)

offset

View Answer
146) The body of ovule fused with funicle is called

A)

integuments

B)

hilum

C)

micropyle

D)

chalaza

View Answer
147) Endosperm completely consumed by the developing embryo before seed maturation in

A)

pea, ground nut and castor

B)

ground nut bean and coconut

C)

pea, ground nut and bean

D)

None of the above

View Answer
148) In Mendels seven contrasting traits of pea total number of colours tested by him was

A)

2

B)

3

C)

4

D)

5

View Answer
149) The double helix of DNA is made of polynucleotide chains where in backbone constituted by sugar phosphate and the bases are projected

A)

inside

B)

outside

C)

one base inside and the other outside

D)

bases remain-in line of sugar phosphate

View Answer
150) Among the RNA polymerases, the RNA polymerase-II transcribes

A)

rRNA

B)

fRNA

C)

small nuclear RNAs

D)

heterogeneous nuclear RNA

View Answer
151) Heterogamety is the term where an individual produces two types of gametes. The most appropriate answer is/are

A)

male Drosophila fly

B)

female Drosophila fly

C)

female bird

D)

Both (a) and (c)

View Answer
152) Induced abortion is also called

A)

STD

B)

MTP

C)

IUD

D)

PID

View Answer
153) The site on antigen that are recognised by antibodies and receptors present on T and B-cells are

A)

antigenic determinants

B)

epitopes

C)

paratopes

D)

Both (a) and (b)

View Answer
154) Cells responsible for cell-mediated response are

A)

T-cytotoxic cells

B)

T-helper cells

C)

B-cells

D)

All of these

View Answer
155) HIV selectively targets

A)

B-memory cells

B)

B-effector cells

C)

T-cytotoxic cells

D)

T-helper cells

View Answer
156) Disease which is always present at a low level in a given population or a region is termed as

A)

pandemic

B)

endemic

C)

epidemic

D)

notifiable disease

View Answer
157) Oral contraceptive prevent pregnancy by

A)

killing the ovum

B)

blocking fertilization

C)

preventing ovulation

D)

preventing implantation

View Answer
158) A person may die due to allergic reaction or an anaphylaetic shock which is characterised by

A)

constriction of peripheral blood vessel

B)

blood capillaries become highly permeable causing loss of fluid from the blood

C)

drastic increase in the blood pressure

D)

All of the above

View Answer
159) Endangered or threatened animals are protected from its extinction by ex-situ conservation in

A)

Wild Life Sanctuary

B)

Biosphere Reserves

C)

National Parks

D)

Zoological Parks

View Answer
160) Population growth curve is sigmoid, if the growth pattern is

A)

logistic

B)

geometric

C)

exponential

D)

accretionary

View Answer
161) Which of the following statement is false with respect to prosthetic groups?

A)

Proteins

B)

Non-proteins

C)

Tightly bound to enzymes

D)

Metal compounds

View Answer
162) Consumption of alcohol may lead to

A)

accumulation of acetaldehyde in liver

B)

synthesis of fat in liver

C)

lowering of blood glucose level of the body

D)

All of the above

View Answer
163) Which of the following disease is cause by virus?

A)

Poliomyelitis

B)

Tuberculosis

C)

Syphilis

D)

Diphtheria

View Answer
164) Halliker, a drought breed of cattle is found in

A)

Karnataka

B)

Gujarat

C)

Andhara Pradesh

D)

Madhya Pradesh

View Answer
165) The inspiratory reserve volume + tidal volume + expiratory reserve volume is same as

A)

inspiratory capacity + expiratory reserve volume

B)

total lung capacity - functional residual capacity

C)

inspiratory capacity + functional residual capacity

D)

inspiratory capacity + residual volume

View Answer
166) After surgical removal of an infected gall bladder, a person must be especial careful to restrict dietary intake of

A)

starch

B)

protein

C)

sugar

D)

fat

View Answer
167) Which of the following animals lack alimentary canals (complete digestive system)?

A)

Earthworms

B)

Jellyfish

C)

Insects

D)

Fishes

View Answer
168) Most of our cells are surrounded by

A)

blood

B)

fluid equivalent to sea water in salts composition

C)

interstitial fluid

D)

pure water

View Answer
169) In his laboratory apparatus, Stanley Mallei synthesised

A)

proteins

B)

DNA

C)

amino acids

D)

protobionts

View Answer
170) Which gas was probably least abundant in the early atmosphere?

A)

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

B)

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

C)

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

D)

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

View Answer
171) Pulse is a direct measure of

A)

blood pressure

B)

stroke volume

C)

cardiac output

D)

heart rate

View Answer
172) Name the character of phylum- Aschelminthes, which differentiates it from all other phyla of kingdom-Animalia.

A)

Parasitic mode

B)

Round in shape

C)

Psedocoelomate

D)

Bilateral symmetry

View Answer
173) In cockroach the flow of haemolymph is

A)

heart \[\to \] head haemocoei \[\to \] perlvisceral sinus \[\to \] pericardial sinus \[\to \] ostia \[\to \] heart

B)

heart \[\to \] pericardial sinus \[\to \] head haemocoei \[\to \] perivisceral sinus \[\to \] ostia \[\to \]heart

C)

heart \[\to \] head haemocoei \[\to \] perivisceral sinus \[\to \] ostia pericardial sinus \[\to \] heart

D)

heart \[\to \] ostia \[\to \] perivisceral sinus \[\to \]pericardial sinus \[\to \] head haemocoei \[\to \] heart

View Answer
174) Which of the following is an oviparous mammal?

A)

Balaenoptera

B)

Delphinus

C)

Pteropus

D)

Ornithorhynchus

View Answer
175) Functional kidney of mammals is

A)

archinephros type

B)

ophisthonephros type

C)

pronephros type

D)

metanephros type

View Answer
176) Torsion is the characteristic of

A)

Gastropoda

B)

Pelecypoda

C)

Cephalopoda

D)

(d Amphineura

View Answer
177) Temperature increases with height in which of the sphere

A)

Troposphere

B)

Stratosphere

C)

Mesosphere

D)

(d None of these

View Answer
178) Maximum species diversity is seen in latitudinal range of

A)

\[{{23.5}^{o}}N\] to \[{{66.5}^{o}}N\]

B)

\[{{23.5}^{o}}S\] to \[{{66.5}^{o}}N\]

C)

\[{{23.5}^{o}}N\] to \[{{66.5}^{o}}S\]

D)

\[{{66.5}^{o}}N\] to \[{{90}^{o}}N\]

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

A)

primary producers

B)

tertiary consumers

C)

secondary consumers

D)

primary consumers

View Answer
180) Gir Lion Sanctuary Project was started in the year

A)

1976

B)

1972

C)

1962

D)

1952

View Answer
181) Which of the following is not vestigial organ in human beings?

A)

Rudimentary ear muscles and third molars

B)

Coccygeal tail vertebrae and scalp muscles

C)

Vermiform appendix and nictitating membrane of the eye

D)

Ear pinna, patella, olecranon process

View Answer
182) Which one of the following is considered as industrial pollution indicators?

A)

Chameleon

B)

Lichens

C)

Bengal Tiger

D)

Biston betlaria

View Answer
183) Wing of pigeon is homologous to the

A)

ear of a bat

B)

wing of butter fly

C)

fore leg of horse

D)

tail of rabbit

View Answer
184) Which of the following is an X-linked recessive trait with locus in \[{{X}_{q}}\] 28 and related with factor VIII?

A)

Haemophilia-A

B)

Haemophilia-B

C)

Christmas disease

D)

Both (a) and (b)

View Answer
185) Choose a false statement with reference to sickle-cell anaemia.

A)

Have genotype \[H{{b}^{s}}/H{{b}^{s}}\]

B)

Have genotype \[H{{b}^{A}}/H{{b}^{A}}\]

C)

Substitution of glutamic acid to valine

D)

Have sickle-shape RBC

View Answer
186) The following is not a function of progesterone

A)

gestation

B)

inhibition of ovuiation

C)

uterine growth and development

D)

stimulation of mammary secretion

View Answer
187) YAC5 refers to

A)

Yeast artificial cell

B)

Yeast artificial chromosome

C)

Yeast artificial colony

D)

None of the above

View Answer
188) Which of the following statement is not correct?

A)

Starch is a polymer of a -glucose

B)

Starch is made up of amylase and amylopectin

C)

Amylase in linear structure consisting of several glucose residues joined by 1, 4-glycosidic linkage

D)

Amylopectin is a straight chain with several glucose residues joined only by 1, 4-glycosidic linkages

View Answer
189) Individual subunits of polysaccharides are linked by

A)

glycosidic bonds

B)

phosphodiester bonds

C)

peptide bonds

D)

hydrogen bonds

View Answer
190) Sucrose is made up of

A)

glucose-galactose

B)

glucose-glucose

C)

glucose-fructose

D)

fructose-fructose

View Answer
191) Ontogenetically liver and pancreas are

A)

ectodermal

B)

mesodermal

C)

endodermal

D)

None of the above

View Answer
192) One of the following ions are required for nerve impulse transmission at the neuromuscular junction

A)

magnesium

B)

chloride

C)

calcium

D)

iron

View Answer
193) Which of the following as a protein deficient disease?

A)

Osteomalacia

B)

Kwashiorkor

C)

Pellagra

D)

Rickets

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

A)

eosinophils

B)

basophiles

C)

monocytes

D)

lymphocytes

View Answer
195) In frog kidney the urea is eliminated by

A)

glomerular filtration

B)

tubular secretion

C)

Both (a) and (b)

D)

tubular absorption

View Answer
196) The organ of corti is situated on the

A)

basilar membrane in the tympanic

B)

Reissners membrane in the vestibular canal?

C)

Basilar membrane in the median canal

D)

Reissners membrane in the tympanic canal

View Answer
197) The following respond to pressure

A)

Meissners corpuscle

B)

pacinian corpuscle

C)

bulbs of Krause

D)

organ of Ruffini

View Answer
198) Between breaths the intraplural pressure is approximately ... mrnHg less than atmospheric pressure.

A)

1

B)

4

C)

8

D)

10

View Answer
199) The peritubular capillaries of the nephron arise from the

A)

afferent arteriole

B)

efferent arteriole

C)

renal artery

D)

arcuate artery

View Answer
200) GnRH secreted from hypothalamus ma^ stimulates the release of

A)

thyroxin from thyroid gland

B)

ADH from posterior pituitary

C)

FSH and LH from anterior pituitary

D)

aldosterone from adrenals

View Answer

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