question_answer 1) Kirchhoffs first law, \[i.,e.,\Sigma i=0\] at a junction, deals with the conservation of:
A)
angular momentum
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B)
linear momentum
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C)
energy
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D)
charge
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question_answer 2)
The current in the following circuit is :
A)
1 A
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B)
\[\frac{2}{3}A\]
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C)
\[\frac{2}{9}A\]
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D)
\[\frac{1}{8}A\]
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question_answer 3) There are three copper wires of length and cross-sectional area (L, A), (2L, (1/2) A), ((1/2) L, 2A). In which case is the resistance minimum?
A)
It is the same in all three cases
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B)
Wire of cross-sectional area 2 A
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C)
Wire of cross-sectional area A
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D)
Wire of cross-sectional area \[\frac{1}{2}A\]
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question_answer 4) A 100 W-200 V bulb is connected to a 160 V power supply. The power consumption would be :
A)
125 W
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B)
100 W
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C)
80 W
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D)
64 W
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question_answer 5) Two parallel wires in free space arc 10 cm apart, and each carries a current of 10A, in the same direction. The force, one wire exerts on the other, per metre of length, is :
A)
\[2\times {{10}^{-7}}N,\]repulsive
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B)
\[2\times {{10}^{-7}}N,\]attractive
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C)
\[2\times {{10}^{-4}}N,\]repulsive
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D)
\[2\times {{10}^{-4}}N,\]attractive
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question_answer 6) A straight wire of diameter 0.5 mm carrying a current of 1A is replaced by another wire of 1 mm diameter carrying the same current. The strength of magnetic field far away is :
A)
unchanged
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B)
quarter of its earlier value
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C)
half of the earlier value
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D)
twice the earlier value
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question_answer 7) A positively charged particle moving due east enters a region of uniform magnetic field directed vertically upwards. The particle will :
A)
continue to move due east
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B)
move in a circular orbit with its speed unchanged
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C)
move in a circular orbit with its speed increased
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D)
gets deflected vertically upwards
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question_answer 8) In an AC circuit with voltage V and current I the power dissipated is :
A)
depends on the phase between V and I
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B)
\[\frac{1}{\sqrt{2}}VI\]
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C)
\[\frac{1}{2}VI\]
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D)
VI
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question_answer 9) The primary winding of transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an AC supply of 20 V-50 Hz. The secondary will have an output of:
A)
2 V, 5 Hz
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B)
200 V, 500 Hz
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C)
2V, 50 Hz
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D)
200 V, 50 Hz
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question_answer 10) Due to the ends magnetic field, charged cosmic ray particles :
A)
can never reach the poles
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B)
can never reach the equator
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C)
require less kinetic energy to reach the equator than the poles
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D)
require greater kinetic energy to reach the equator, than the poles
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question_answer 11) If \[{{\varepsilon }_{0}}\]and \[{{\mu }_{0}}\] are respectively the electric permittivity and magnetic permeability of free space, \[\varepsilon \]and\[\mu \] are the corresponding quantities in a medium, the index of refraction of the medium is :
A)
\[\sqrt{\frac{{{\varepsilon }_{0}}{{\mu }_{0}}}{\varepsilon \mu }}\]
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B)
\[\sqrt{\frac{\varepsilon \mu }{{{\varepsilon }_{0}}{{\mu }_{0}}}}\]
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C)
\[\sqrt{\frac{{{\varepsilon }_{0}}\mu }{\varepsilon {{\mu }_{0}}}}\]
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D)
\[\sqrt{\frac{\varepsilon }{{{\varepsilon }_{0}}}}\]
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question_answer 12) The kinetic energy of an accelerated through a potential of 100 V is :
A)
\[1.60\times {{10}^{-17}}J\]
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B)
\[1.16\times {{10}^{4}}k\]
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C)
418.6 cal
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D)
\[6.626\times {{10}^{-34}}Ws\]
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question_answer 13) The most penetrating radiation out of the following is :
A)
gamma-rays
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B)
alpha particles
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C)
beta-rays
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D)
X-rays
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question_answer 14) When hydrogen atom is in its first excited level, its radius is :
A)
four times, its ground state radius
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B)
twice, its ground state radius
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C)
same as its ground state radius
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D)
half of its ground state radius
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question_answer 15) The energy of ground electronic state of hydrogen atom is - 13.6 eV. The energy of the first excited state will be :
A)
- 54.4 eV
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B)
-27.2eV
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C)
- 6.8 eV
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D)
- 3.4 eV
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question_answer 16) Which of the following is true?
A)
The stopping potential increases with increasing intensity of incident light
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B)
The photo current increases with increasing intensity of light
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C)
The current in photocell increases with increasing frequency of light
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D)
The photo current is proportional to applied voltage
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question_answer 17) The activity of a radioactive sample is measured as 9750 counts per minute at t = 0 and as 975 counts per minute at T = 5 minutes. The decay constant is approximately:
A)
0.922 per minute
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B)
0.691 per minute
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C)
0.461 per minute
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D)
0.230 per minute
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question_answer 18) Which of the following is used as a moderator in nuclear reactors?
A)
Plutonium
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B)
Cadmium
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C)
Heavy water
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D)
Uranium
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question_answer 19) The stable nucleus that has a radius half that of\[F{{e}^{56}}\] is :
A)
\[L{{i}^{7}}\]
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B)
\[N{{a}^{21}}\]
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C)
\[{{S}^{16}}\]
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D)
\[C{{a}^{40}}\]
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question_answer 20) A free neutron decays into a proton, an electron and :
A)
a beta particle
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B)
an alphaparticle
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C)
an antineutrino
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D)
a neutrino
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question_answer 21) In a fission reaction \[_{92}^{236}U{{\to }^{117}}X{{+}^{117}}Y+n+n\]the binding energy per nucleon of X and Y is 8.5 MeV whereas of 236U is 7.6 MeV. The total energy liberated will be about:
A)
2000 MeV
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B)
200 MeV
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C)
2 MeV
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D)
200 MeV
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question_answer 22) To obtain a p-type germanium semiconductor, it must be doped with :
A)
phosphorus
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B)
indium
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C)
antimony
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D)
arsenic
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question_answer 23)
The diode used in the circuit shown in the figure has a constant voltage drop of 0.5 V at all currents and a maximum power rating of 100 mill watt. What should be the value of the resistor R, connected in series with the diode, for obtaining maximum current?
A)
200\[\Omega \]
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B)
6.67 \[\Omega \]
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C)
5\[\Omega \]
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D)
1.5\[\Omega \]
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question_answer 24) The correct relationship between the two current gains a and p in a transistor is :
A)
\[\beta =\frac{1+\alpha }{\beta }\]
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B)
\[\alpha =\frac{\beta }{1+\beta }\]
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C)
\[\alpha =\frac{\beta }{1-\beta }\]
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D)
\[\beta =\frac{\alpha }{1+\alpha }\]
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question_answer 25)
The following truth table belongs to which of the following four gates?
A
B
C
1
1
0
1
0
0
0
1
0
0
0
1
A)
NOR
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B)
XOR
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C)
NAND
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D)
OR
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question_answer 26) The force F on a sphere of radius r moving in a medium with velocity v given by\[F=6\pi \,\eta rv\]. The dimensions of r) are :
A)
\[\left[ M{{L}^{-3}} \right]\]
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B)
\[\left[ ML{{T}^{2}} \right]\]
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C)
\[\left[ M{{T}^{-1}} \right]\]
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D)
\[\left[ M{{L}^{-1}}{{T}^{-1}} \right]\]
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question_answer 27) Find the torque of a force \[\mathbf{\vec{F}}=-3\mathbf{\hat{i}}+\mathbf{\hat{j}}+5\mathbf{\hat{k}}\]acting at the point \[\vec{r}=-7\mathbf{\hat{i}}+3\mathbf{\hat{j}}+16\mathbf{\hat{k}}\]:
A)
\[-21\mathbf{\hat{i}}+3\mathbf{\hat{j}}+5\mathbf{\hat{k}}\]
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B)
\[-14\mathbf{\hat{i}}+3\mathbf{\hat{j}}+16\mathbf{\hat{k}}\]
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C)
\[4\mathbf{\hat{i}}+4\mathbf{\hat{j}}+6\mathbf{\hat{k}}\]
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D)
\[14\mathbf{\hat{i}}+38\mathbf{\hat{j}}+16\mathbf{\hat{k}}\]
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question_answer 28) The position x of a particle varies with time t, as\[x=a{{t}^{2}}-d{{t}^{3}}\]. The acceleration of the particle will be zero at time t equal to :
A)
zero
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B)
\[\frac{a}{3b}\]
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C)
\[\frac{2a}{3b}\]
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D)
\[\frac{a}{b}\]
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question_answer 29) If a car at rest accelerates uniformly to a speed of 144 km/h in 20 s, it covers a distance of :
A)
2880 m
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B)
1440 m
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C)
400 m
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D)
20 m
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question_answer 30) A ball, whose kinetic energy is E, is thrown at an angle of \[45{}^\circ \] with the horizontal, its kinetic energy at the highest point of its flight will be :
A)
zero
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B)
E/2
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C)
\[E/\sqrt{2}\]
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D)
E
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question_answer 31) Two bodies of masses m and 4m are moving with equal kinetic energy. The ratio of their linear momenta is :
A)
1 : 4
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B)
1 : 2
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C)
1 : 1
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D)
4 : 1
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question_answer 32) In a carbon monoxide molecule, the carbon and the oxygen atoms are separated by a distance \[1.12\times {{10}^{-10}}m\]. The distance of the centre of mass, from the carbon atom is :
A)
\[o.64\times {{10}^{-10}}m\]
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B)
\[o.56\times {{10}^{-10}}m\]
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C)
\[o.51\times {{10}^{-10}}m\]
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D)
\[o.48\times {{10}^{-10}}m\]
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question_answer 33) A cart of mass M is tied to one end of a massless rope of length 10 m. The other end of the rope is in the hands of a man of mass M. The entire system is on a smooth horizontal surface. The man is at x = 0 and the cart at x = 10 m. If the man pulls the cart by the rope, the man and the cart will meet at the point :
A)
they will never meet
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B)
x = 10 m
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C)
x= 5m
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D)
x = 0
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question_answer 34) A metal ball of mass 2 kg moving with a velocity of 36 km/h has a head on collision with a stationary ball of mass 3 kg. If after the collision, the two balls move together, the loss in kinetic energy due to collision is :
A)
140 J
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B)
100 J
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C)
60 J
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D)
40 J
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question_answer 35) A couple produces :
A)
no motion
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B)
linear and rotational motion
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C)
purely rotational motion
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D)
purely linear motion
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question_answer 36) The escape velocity of a body on the surface of the earth is 11.2 km/s. If the earths mass increases to twice its present value and the radius of the earth becomes half, the escape velocity would become :
A)
44.8 km/s
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B)
22.4 km/s
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C)
11.2 km/s (remain unchanged)
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D)
5.6 km/s
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question_answer 37) The period of revolution of planet A round the sun is 8 times that of B. The distance of A from the sun is how many times greater than that of B from the sun?
A)
5
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B)
4
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C)
3
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D)
2
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question_answer 38) A hollow sphere is filled with water. It is hung by a long thread. As the water flows out of a hole at the bottom, the period of oscillation will:
A)
first increase and then decrease
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B)
first decrease and then increase
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C)
go on increasing
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D)
go on decreasing
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question_answer 39) Two simple harmonic motions with the same frequency act on a particle at right angles i.e., along x and y axis. If the two amplitudes are equal and the phase difference is \[\pi \]/2, the resultant motion will be :
A)
a circle
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B)
an ellipse with the major axis along y-axis
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C)
an ellipse with the major axis along x-axis
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D)
a straight line inclined at 45° to the x-axis
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question_answer 40) The equation of a travelling wave is : y = 60 cos (18001 - 6x)where y is in microns, t in second and x in metres. The ratio of maximum particle velocity to velocity of wave propagation is :
A)
3.6
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B)
\[3.6\times {{10}^{-4}}\]
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C)
\[3.6\times {{10}^{-6}}\]
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D)
\[3.6\times {{10}^{11}}\]
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question_answer 41) Standing waves are produced in a 10 m long stretched string. If the string vibrates in 5 segments and the wave velocity is 20 m/s, the frequency is :
A)
10 Hz
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B)
5 Hz
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C)
4 Hz
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D)
2 Hz
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question_answer 42) A pulse of a wave train travels along a stretched string and reaches the fixed end of the string. It will be reflected back with :
A)
a phase change of 180° with velocity reversed
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B)
the same phase as the incident pulse with no reversal of velocity
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C)
a phase change of 180° with no reversal of velocity
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D)
the same phase as the incident pulse but with velocity reversed
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question_answer 43) A cylindrical resonance tube open at both ends, has a fundamental frequency\[f\], in air. If half of the length is dipped vertically in water, the fundamental frequency of the air column will be:
A)
\[2f\]
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B)
\[3f/2\]
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C)
\[f\]
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D)
\[f\]/2
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question_answer 44) A sample of gas expands from volume \[{{\text{V}}_{\text{1}}}\]to \[{{\text{V}}_{\text{2}}}\text{.}\]The amount of work done by the gas is greatest when the expansion is :
A)
adiabatic
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B)
isobaric
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C)
isothermal
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D)
equal in all above cases
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question_answer 45) A black body is at temperature of 500 K. It emits energy at rate which is proportional to :
A)
\[{{(500)}^{4}}\]
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B)
\[{{(500)}^{3}}\]
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C)
\[{{(500)}^{2}}\]
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D)
500
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question_answer 46) The efficiency of a Carnot engine operating between temperatures of 100°C and - 23°C will be :
A)
\[\frac{100-23}{273}\]
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B)
\[\frac{100+23}{373}\]
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C)
\[\frac{100+23}{100}\]
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D)
\[\frac{100-23}{100}\]
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question_answer 47) The focal lengths of a converging lens measured for violet, green and red colours are \[{{f}_{v\,}},{{f}_{g,}}{{f}_{r}}\]respectively. We will find :
A)
\[{{f}_{g}}>{{f}_{r}}\]
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B)
\[{{f}_{v}}<{{f}_{r}}\]
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C)
\[{{f}_{v}}>{{f}_{r}}\]
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D)
\[{{f}_{v}}={{f}_{r}}\]
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question_answer 48) An astronomical telescope of ten-fold angular magnification has a length of 44 cm. The focal length of the objective is :
A)
440 cm
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B)
44 cm
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C)
40 cm
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D)
4 cm
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question_answer 49) Electromagnetic radiation of frequency n, velocity v and wavelength \[\lambda \], in air, enters a glass slab of refractive index \[\mu \]. The frequency, wavelength and velocity of light in the glass slab will be, respectively:
A)
\[\frac{n}{\mu },\frac{\lambda }{\mu },v\]
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B)
\[n,\lambda \frac{v}{\mu }\]
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C)
\[n,\frac{\lambda }{\mu },\frac{v}{\mu }\]
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D)
\[\frac{n}{\mu },\frac{\lambda }{\mu },\frac{v}{\mu }\]
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question_answer 50)
From the graph between current I and voltage V shown in figure, identify the portion corresponding to negative resistance:
A)
DE
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B)
CD
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C)
BC
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D)
AB
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question_answer 51) Which sequence correctly describes a relative bond strength of oxygen molecule, super-oxide ion and peroxide ion:
A)
\[{{O}_{2}}>O_{2}^{-}>O_{2}^{2-}\]
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B)
\[{{O}_{2}}>O_{2}^{-}<O_{2}^{2-}\]
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C)
\[{{O}_{2}}<O_{2}^{-}>O_{2}^{2-}\]
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D)
\[{{O}_{2}}<O_{2}^{-}<O_{2}^{2-}\]
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question_answer 52) 1 mole of \[C{{H}_{4}}\] contains:
A)
3.0g of carbon
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B)
\[1.81\times {{10}^{23}}\] molecules of \[C{{H}_{4}}\]
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C)
4 g atoms of hydrogen
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D)
\[6.02\times {{10}^{23}}\] atoms of H
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question_answer 53) In two H-atoms A and B the electrons move around the nucleus in-circular orbit of radius Y and 4r respectively. The ratio of the times taken by them to complete one revolution is:
A)
\[1 : 2\]
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B)
\[2 : 1\]
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C)
\[1 : 4\]
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D)
\[1 : 8\]
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question_answer 54)
The table given below lists the bond dissociation energy \[({{E}_{diss}})\]for single co-valent bonds formed between C and atoms A, B, D, E Bond \[({{E}_{diss}})\,(kcal\,-\,mo{{l}^{-1}})\] C-A 240 C-B 382 C-D 276 C-E 486
Which of the atoms has smallest size?
A)
E
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B)
B
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C)
D
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D)
A
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question_answer 55) The ionisation energy of gaseous Na atom is \[495.8\text{ }kJ\text{ }mo{{l}^{-1}}\]. The lowest possible frequency of light that can ionise a Na atom is:
A)
\[1.24\times {{10}^{12}}{{s}^{-1}}\]
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B)
\[3.15\times {{10}^{14}}{{s}^{-1}}\]
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C)
\[4.76\times {{10}^{14}}{{s}^{-1}}\]
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D)
\[1.24\times {{10}^{15}}{{s}^{-1}}\]
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question_answer 56) A sudden large jump between the values of second and third ionization energy of an element would be associated with the electronic configuration:
A)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}},3{{p}^{3}}\]
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B)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}\]
done
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C)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{1}}\]
done
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D)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{1}}\]
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question_answer 57) A \[\sigma \] bonded molecule \[M{{X}_{3}}\] is T-shaped. The number of non-bonding pair of electrons is:
A)
1
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B)
3
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C)
2
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D)
can be predicted only if atomic number of M is known
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question_answer 58) The value of \[\Delta {{H}_{O-H}}\] n is\[109\text{ }kcal\text{ }mo{{l}^{-1}}\]. Then formation of one mole of water in gaseous state from H(g) ang O(g) is accompanied by:
A)
absorption of 218 kcal of energy
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B)
release of 218 kcal of energy
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C)
release of 109 kcal of energy
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D)
unpredictable
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question_answer 59) One of the following is Bronsted acid but not a Bronsted base:
A)
\[{{H}_{2}}O\]
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B)
\[N{{H}_{3}}\]
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C)
\[{{H}_{2}}S\]
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D)
\[HCO_{3}^{-}\]
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question_answer 60) Calculate the heat of following reaction \[Na(s)+0.5C{{l}_{2}}(g)\xrightarrow{{}}NaCl(s);\Delta {{H}^{o}}?\] Given \[{{H}_{2}}(g)+C{{l}_{2}}(g)\xrightarrow{{}}2HCl,\]\[\Delta {{H}^{o}}=152kcal\] \[2Na(s)+2HCl(g)\xrightarrow{{}}2NaCl(s)+{{H}_{2}}(g),\]\[\Delta {{H}^{o}}=152kcal\]
A)
\[54\text{ }kcal\]
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B)
\[\text{98 }kcal\]
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C)
\[\text{196 }kcal\]
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D)
\[\text{108 }kcal\]
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question_answer 61) The equilibrium constant for the reaction \[N{{H}_{4}}N{{O}_{2}}(s){{N}_{2}}(g)+2{{H}_{2}}O(g)\] is given by:
A)
\[\frac{[{{N}_{2}}]{{[{{H}_{2}}O]}^{2}}}{[N{{H}_{4}}N{{O}_{2}}]}\]
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B)
\[\frac{[{{N}_{2}}]{{[2{{H}_{2}}O]}^{2}}}{{{[N{{H}_{4}}N{{O}_{2}}]}^{2}}}\]
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C)
\[\frac{[N{{H}_{4}}N{{O}_{2}}]}{[{{N}_{2}}]{{[{{H}_{2}}O]}^{2}}}\]
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D)
\[[{{N}_{2}}]{{[{{H}_{2}}O]}^{2}}\]
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question_answer 62) In a closed vessel of volume V, a moles of nitrogen and b moles of oxygen are made to react to give nitric oxide, according to reactio\[{{N}_{2}}+{{O}_{2}}2NO\] If at equilibrium, 2x of moles of NO are obtained then:
A)
\[{{K}_{c}}=\frac{4{{x}^{2}}}{(a-x)\,(b-x)}.\frac{1}{V}\]
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B)
\[{{K}_{c}}=\frac{4{{x}^{2}}}{(a-x)\,(b-x)}.V\]
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C)
\[{{K}_{c}}=\frac{{{x}^{2}}}{(a-x)\,(b-x)}.V\]
done
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D)
\[{{K}_{c}}=\frac{4{{x}^{2}}}{(a-x)\,(b-x)}\]
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question_answer 63) The molality of 1 L solution of \[93%{{H}_{2}}S{{O}_{4}}\](w/v) having density \[1.84\text{ }g/mL\] is:
A)
\[1.043\text{ }m\]
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B)
\[0.143m\]
done
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C)
10.43 m
done
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D)
none of these
done
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question_answer 64) Reaction that takes place at graphite anode in dry cell is:
A)
\[M{{n}^{+}}+2{{e}^{-}}\xrightarrow{{}}Mn(s)\]
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B)
\[Mn(s)+\xrightarrow{{}}M{{n}^{+}}+{{e}^{-}}+1.5V\]
done
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C)
\[Z{{n}^{2+}}(s)+2{{e}^{-}}\xrightarrow{{}}Zn(s)\]
done
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D)
\[Zn(s)\xrightarrow{{}}Z{{n}^{2+}}+2{{e}^{-}}\]
done
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question_answer 65) The radius of \[N{{a}^{+}}\] is 95 pm and that of \[C{{l}^{-}}\] ion is 181 pm. Predict the co-ordination number of \[N{{a}^{+}}\].
A)
8
done
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B)
6
done
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C)
4
done
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D)
unpredictable
done
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question_answer 66) A reaction \[2A\to B\] follows a second order kinetics. Doubling the concentration of A will increase the rate of formation of B by a factor of:
A)
\[1/4\]
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B)
4
done
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C)
\[1/2\]
done
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D)
2
done
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question_answer 67)
The diagram given above is a vapour pressure composition diagram for a binary solution of A and B. In the solution A......B interactions are:
A)
smaller than A....... A and B.......B interactions
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B)
similar to A........ A and B........B interactions
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C)
greater than A ........ A and B........ B interactions
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D)
unpredictable
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question_answer 68) Calculate the volume occupied by 7.0 g of nitrogen gas at \[{{27}^{o}}C\] and 750 mm Hg pressure.
A)
\[62.32\text{ }L\]
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B)
\[6.232\text{ }L\]
done
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C)
\[623.2\text{ }L~\]
done
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D)
\[0.623\text{ }L\]
done
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question_answer 69) If \[_{92}{{U}^{235}}\] is assumed to decay only by emitting two a and one \[\beta \]- particles. The possible product of decay is;
A)
\[_{89}A{{c}^{277}}\]
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B)
\[_{89}A{{c}^{235}}\]
done
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C)
\[_{89}A{{c}^{211}}\]
done
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D)
\[_{89}A{{c}^{237}}\]
done
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question_answer 70) The colour of \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] changes from red orange to lemon yellow on treatment with aqueous \[KOH\] because of:
A)
oxidation of potassium hydroxide to potassium peroxide
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B)
conversion of dichromate ion to chromate
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C)
reduction of \[Cr\] (VI) to \[Cr\] (III)
done
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D)
formation of chromium hydroxide
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question_answer 71) Which one of the following metals cannot be extracted by using Al as a reducing agent?
A)
\[W\] from \[W{{O}_{3}}\]
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B)
\[Mn\] from \[M{{n}_{3}}{{O}_{4}}\]
done
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C)
\[Cr\] from \[C{{r}_{2}}{{O}_{3}}\]
done
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D)
\[Na\] from \[N{{a}_{2}}O\]
done
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question_answer 72) The numbers of a and P particles emitted in the transformation \[_{92}{{U}^{238}}{{\xrightarrow{{}}}_{92}}{{U}^{234}}\]
A)
\[2,1\]
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B)
\[1,2\]
done
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C)
\[1,1\]
done
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D)
\[1,0\]
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question_answer 73) The maximum bond angle in hydrides of group 16-elements is in:
A)
\[{{H}_{2}}Te\]
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B)
\[{{H}_{2}}Se\]
done
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C)
\[{{H}_{2}}S\]
done
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D)
\[{{H}_{2}}O\]
done
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question_answer 74) \[N{{O}_{2}}\] is obtained by heating :
A)
\[NaN{{O}_{3}}\]
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B)
\[AgN{{O}_{3}}\]
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C)
\[CsN{{O}_{3}}\]
done
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D)
\[KN{{O}_{3}}\]
done
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question_answer 75) An ingredient of baking powder is:
A)
sodium bicarbonate
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B)
sodium carbonate
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C)
borax
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D)
sodium chloride
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question_answer 76) Stable compounds in \[+1\] oxidation state are formed by:
A)
\[B\]
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B)
\[Al\]
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C)
\[Ga\]
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D)
\[Tl\]
done
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question_answer 77) Which one of the following configurations is correct for alkaline earth elements?
A)
\[1{{s}^{2}}2{{s}^{2}}2{{p}^{3}}\]
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B)
\[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}\]
done
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C)
\[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{2}}\]
done
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D)
\[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}\]
done
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question_answer 78) Perches process is used to prepare:
A)
\[BaC{{O}_{3}}\]
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B)
\[L{{i}_{2}}C{{O}_{3}}\]
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C)
\[{{K}_{2}}C{{O}_{3}}\]
done
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D)
\[N{{a}_{2}}C{{O}_{3}}\]
done
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question_answer 79) The gold numbers of gelatin, albumin and strach are 0.005, 0.15 and 2.5 respectively. Which is the best protective colloid?
A)
Gelatin
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B)
Albumin
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C)
Starch
done
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D)
None of these
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question_answer 80) \[K{{O}_{2}}+C{{O}_{2}}\xrightarrow{{}}(gas)\], Which gas is this?
A)
\[{{H}_{2}}\]
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B)
\[{{N}_{2}}\]
done
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C)
\[{{O}_{2}}\]
done
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D)
\[CO\]
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question_answer 81) Which of the following interhalogen does not exist?
A)
\[Cl{{F}_{2}}\]
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B)
\[Cl{{F}_{5}}\]
done
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C)
\[Cl{{F}_{3}}\]
done
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D)
\[ClF\]
done
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question_answer 82) If a person is injured by the shot of gun and all the bullets could not be removed. It may cause poisoning by:
A)
\[Tl\]
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B)
\[Pb\]
done
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C)
\[As\]
done
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D)
carbon
done
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question_answer 83) Silicon is the main constituent of:
A)
plants
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B)
rocks
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C)
alloys
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D)
animals
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question_answer 84) Which of the following is known as aqua-regia?
A)
\[3HCl+HN{{O}_{3}}\]
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B)
\[3HN{{O}_{3}}+HCl\]
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C)
\[{{H}_{3}}P{{O}_{4}}+{{H}_{2}}S{{O}_{4}}\]
done
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D)
\[HCl+C{{H}_{3}}COOH\]
done
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question_answer 85) Silver bromide is used in photography because it is:
A)
soluble in \[N{{H}_{4}}OH\]
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B)
insoluble in acids
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C)
photosensitive
done
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D)
soluble in hypo-solution
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question_answer 86) The matte obtained by smelting copper pyrites with coke and sand contains mainly:
A)
\[FeS+ZnS\]
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B)
\[C{{u}_{2}}S+FeS\]
done
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C)
\[CuS+Fe{{S}_{2}}\]
done
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D)
\[ZnS+CuS\]
done
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question_answer 87) In the metal carbonyls of general formula \[M{{(CO)}_{x}}\] where M = metal, \[x=4\]the metal is bonded to:
A)
oxygen
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B)
carbon
done
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C)
carbon and oxygen
done
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D)
\[C\equiv O\] triple bond
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question_answer 88) Which one of the following is common example of fibres?
A)
Nylon-66
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B)
Nylon-6
done
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C)
Buna-S
done
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D)
Bakelite
done
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question_answer 89) Which one of the following species does not exist?
A)
\[{{[SnC{{l}_{6}}]}^{3-}}\]
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B)
\[{{[GeC{{l}_{6}}]}^{2-}}\]
done
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C)
\[{{[SiC{{l}_{6}}]}^{2-}}\]
done
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D)
\[{{[CC{{l}_{6}}]}^{2-}}\]
done
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question_answer 90) \[(CuS{{O}_{4}}+N{{H}_{4}}OH)\] gives a deep blue complex of:
A)
cupra ammonium sulphate
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B)
cupra ammonium hydroxide
done
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C)
sodium hexametaphosphate
done
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D)
ammonal
done
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question_answer 91) Which one of the following is not an ore of magnesium?
A)
Dolomite
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B)
Carnallite
done
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C)
Gypsum
done
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D)
Magnesite
done
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question_answer 92) Which one of the following will be able to show geometrical isomerism?
A)
\[M{{A}_{4}}\]
done
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B)
\[M{{A}_{3}}B\]
done
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C)
\[M{{(AA)}_{2}}\]
done
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D)
\[MABCD\]
done
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question_answer 93) Which of the following imparts violet colouration to the Bunsen burner non luminous flam?
A)
\[KCl\]
done
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B)
\[CaC{{l}_{2}}\]
done
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C)
\[BaC{{l}_{2}}\]
done
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D)
\[NaCl\]
done
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question_answer 94) Sodium tripolyphosphate used in industrial detergent and softening of water is obtained by the hydrolysis of:
A)
orthophosphate
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B)
trimetaphosphate
done
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C)
sodium dihydrogenphosphate
done
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D)
none of the above
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View Answer play_arrow
question_answer 95) \[RCH=C{{H}_{2}}\xrightarrow[{{C}_{2}}{{H}_{5}}OH]{Na/N{{H}_{3}}_{(l)}}RC{{H}_{2}}C{{H}_{3}}\], This reaction is called as:
A)
Fischer-Siper reaction
done
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B)
Clemmensen reaction
done
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C)
Birch reduction
done
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D)
Amdt-Eistert synthesis
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question_answer 96) The compound A in the following sequence of reaction is a silver salt of:
A)
butyric acid
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B)
isobutyric acid
done
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C)
propanoic acid
done
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D)
none of these
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question_answer 97) In order to get propane gas which of the following should be subjected to soda lime decarboxylation ?
A)
Sodium formate
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B)
Mixture of sodium acetate and sodium ethanoate
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C)
Sodium butyrate
done
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D)
Sodium propionate
done
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question_answer 98) Which of the following species is less reactive than benzene towards electrophilic substituation reactions?
A)
Aniline
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B)
Nitrobenzene
done
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C)
Bromobenzene
done
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D)
Phenol
done
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question_answer 99) A compound has simplest formula \[C{{H}_{2}}\]. To which hydrocarbon series does it belong ?
A)
Alkynes
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B)
Cycloalkanes
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C)
Alkanes
done
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D)
None of these
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question_answer 100) The change in the optical rotation (with time) of freshly prepared solution of sugar is known as:
A)
mutarotation
done
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B)
rotatory motion
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C)
specific rotation
done
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D)
inversion
done
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question_answer 101) The long bones which are solid may be eaten up by special cells and make them hollow. These cells are:
A)
chondroblast
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B)
chondroclasts
done
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C)
octeoblasts
done
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D)
osteoclasts
done
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question_answer 102) A significant effect of ultraviolet radiation is the:
A)
production of base tautomeres
done
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B)
breakage of phosphodiester bonds
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C)
formation of pyremidine dimers
done
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D)
induction of photosynthesis
done
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question_answer 103) Tracer elements are defined as:
A)
micronutrient elements
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B)
radioisotope elements
done
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C)
macronutrient elements
done
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D)
vitamins
done
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question_answer 104) The place where RNA polymerase attaches with the DNA is called:
A)
promoter site
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B)
operator site
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C)
activator site
done
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D)
repressor site
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question_answer 105) Which one of the following is a secretory tissue?
A)
Sclerenchyma
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B)
Companion cells
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C)
Hydathode
done
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D)
Sclereids
done
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question_answer 106) A pigment concerned with both floral induction and seed germination is:
A)
anthocyanin
done
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B)
phytochrome
done
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C)
phycocyanin
done
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D)
xanthophylls
done
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question_answer 107) Translocation of carbohydrates in flowering plants occur in the form of:
A)
glucose
done
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B)
maltose
done
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C)
starch
done
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D)
sucrose
done
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question_answer 108) Which one of the following elements play important role in denitrogen fixation?
A)
Mn
done
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B)
MO
done
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C)
2n
done
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D)
Cu
done
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question_answer 109) At constant temperature, the rate of transpiration will be higher at:
A)
sea level
done
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B)
1 km below sea level
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C)
1 km above sea level
done
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D)
1.5 km above sea level
done
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question_answer 110) Complete oxidation of a molecule of glucose yield :
A)
15 ATP molecules
done
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B)
36 ATP molecules
done
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C)
2 ATP molecules
done
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D)
8 ATP molecules
done
clear
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question_answer 111) Water can be absorbed from a hypertonic external solution by :
A)
adding more water in the external solution
done
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B)
auxin treated cells
done
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C)
adding a buffer in the external solution
done
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D)
cytokinin treated cells
done
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View Answer play_arrow
question_answer 112) For process of photosynthesis, all except one of the following items are essential. Point out the exception :
A)
water, minerals
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B)
light, chlorophyll
done
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C)
\[C{{O}_{2}}\]and optimum temperature
done
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D)
\[{{O}_{2}}\] and sucrose
done
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question_answer 113) Germinating wheat seeds are put in a Ganongs respirometer filled with mercury or saturated sodium chloride solution. What will happen to it after 24 hours when apparatus is set?
A)
Level will rise
done
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B)
Level will fall
done
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C)
Level remains as such
done
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D)
Seeds will die
done
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question_answer 114) In chiasmata meiosis, the disial segments of the daughter chromalid segregate from eacli other, ar:
A)
anaphase
done
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B)
anaphase
done
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C)
both (a) and (b)
done
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D)
diakinesis
done
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question_answer 115) A structure called synaptomeal complex, which is considered to be a physical structure which is associated with synapsis of homologous chromosomes was discovered by:
A)
King
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B)
Moses
done
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C)
Griffith
done
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D)
Balbiam
done
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question_answer 116) If a cross is made between two plants of Aa Bb cc Dd and Aa bb cc DD genotype then what will be the expected frequency of obtaining a progeny with AA Bb Cc Dd ?
A)
1/128
done
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B)
1/64
done
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C)
1/32
done
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D)
1/16
done
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question_answer 117) The garden pea (Piswn sativiim) has 14 chromosomes in each of its body cells. The number of linkage group expected in the species is :
A)
more than 7
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B)
less than 7
done
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C)
7
done
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D)
14
done
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question_answer 118) Given are the statements regarding linkages of genes: (i) The strength of the linkage is determined by the distance between the 2 genes in question. (ii) The strength of the linkage is directly proportional to the distance between the two genes. The two genes are said to be linked when they fail to show independent assortment. Out of these statements:
A)
all are correct
done
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B)
(i) and (ii) are correct
done
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C)
(i) and (iii) are correct
done
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D)
(ii) and (vi) are correct
done
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question_answer 119) Independent gene that copy other gene. so as to produce a similar effect are known as :
A)
complementary gene
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B)
epistatic gene
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C)
lethal gene
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D)
duplicate gene
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question_answer 120) Out of the given four combination which one possess the integrated protein synthesizing machinery:
A)
m-RNA. r-RNA and amino acid
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B)
t-RNA, ribosome. nucleus and m-RNA
done
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C)
ribosomes. r-RNA and amino acid
done
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D)
ribosomes. r-RNA. m-RNA and amino acid
done
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question_answer 121) In pseudo-allelisms, genes are :
A)
functionally allelic and structurally non-allelic
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B)
structurally as well as functionally allelic
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C)
structurally allelic and functionally non-allelic
done
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D)
structurally as well as functionally non-allelic
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question_answer 122) Recessive epistasis is defined as :
A)
a situation in which a gene pair in homozygous recessive condition masks the effect of one or both the member of another gene pair
done
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B)
a situation in which the dominant allele of the first gene pair masks the effect of both the members of the second gene pair and the dominant allele of the second gene pair masks the effect of both the members of the first gene pair
done
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C)
a situation in which one allele does not allow its alternative form to express
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D)
a situation in which the dominant allele of one gene pair masks the effect of both members of another gene pair
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question_answer 123) Clove oil is obtained from :
A)
wood of Santalum album
done
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B)
leaf of Syzygium aromaticum
done
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C)
flower bud of Syzygium aromadcum
done
clear
D)
rhizome of Veiiveria ziganoides
done
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question_answer 124) Chewing gum is the latex, obtained from the bark of:
A)
PIumeria rubra
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B)
Ficus hispida
done
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C)
Achras sapota
done
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D)
Streblus asper
done
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question_answer 125) The alkaloid known as reserpine is obtained from the root of which plant?
A)
Papaver somnifenim
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B)
Zingiber officinal
done
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C)
Hemidesmus indieus
done
clear
D)
Rauwolffia serpentine
done
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question_answer 126) Natural rubber is obtained from the latex of
A)
Calotropis procera
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B)
Ricinus communis
done
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C)
Nerium indicum
done
clear
D)
Hevea brasiliensis
done
clear
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question_answer 127) Out of the given following disease, which disease results due to disorder in lysosomes ?
A)
Arthritic joints
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B)
Hurles syndrome
done
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C)
Tay Sachs disease
done
clear
D)
All of these
done
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question_answer 128) Besides C-AMP, which one of the following molecules acts as a second messenger in biological system ?
A)
C-DNA
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B)
C-GTP
done
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C)
\[C{{a}^{++}}\]
done
clear
D)
ATP
done
clear
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question_answer 129) In plants lysosomes are not present, then the function of lysosomes is taken by which of the following orgenelles ?
A)
sphaerosomes
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B)
vacuoles
done
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C)
aleurone layer
done
clear
D)
all of these
done
clear
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question_answer 130) Out of the given following cell structure which show polarity is :
A)
microtubules
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B)
mitochondria
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C)
endoplasmic reticulum
done
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D)
microbodies
done
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question_answer 131) Which one of the following is catalysed by the presence of enzyme peptidyl transferase?
A)
Peptide bond formation
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B)
Transfer of a ammo acid
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C)
Transfer of ribosomes units
done
clear
D)
Transfer of peptide bonds
done
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question_answer 132) The anticodon region is an important part of the structure of:
A)
r-RNA
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B)
m-RNA
done
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C)
r-RNA
done
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D)
in-RNA
done
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question_answer 133) Which of the following cell organelles is not a micro body?
A)
Peroxisome
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B)
Lomasome
done
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C)
Ribosome
done
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D)
Sphaerosome
done
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question_answer 134) Microfilaments are long, thin, contractile rods (solid) of 6-10 nm diameter. These help in :
A)
movement of cell membrane during mobility and endocytosis
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B)
contraction of muscles, functioning of microvilli and undulation of cell membrane
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C)
cytoplasmic streming, cleavage of animal celt formation of pseudopodia
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D)
all of the above
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question_answer 135) To no fibrils of desmosomes are made up of :
A)
chitin and keratin
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B)
keratin and actin
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C)
actin and desmin
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D)
keratin and desmin
done
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question_answer 136) In lower plants motile cells bears two flagella. One is called whiplash or acronernatic. Which is smooth and the second one is called tinsel or rough or pleuronematic or pantonematic and bears lateral hair like appendages called :
A)
flimmers
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B)
mastigonemes
done
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C)
both (a) and (b)
done
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D)
none of these
done
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question_answer 137) Plasmids are ideal vectors for gene cloning as :
A)
they replicate freely outside the bacterial cells
done
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B)
they are self-replicating within the bacterial cell
done
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C)
they can be multiplied by culruring
done
clear
D)
they can be multiplied in a laboratory using enzyme
done
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question_answer 138) DNA finger priming has proved useful in Forensic science. It involve use of :
A)
minisatellite
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B)
ribosomal DNA
done
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C)
cDNA
done
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D)
bacterial DNA
done
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question_answer 139) The synonym of family Labiatae, Umbelliferae, Compositae and Gramineae are :
A)
Lcguminosae, Acanthaceae, Asteraceae and Lamiaceae
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B)
Solanaceae. Aricaceae, Apiaceae, Poaceae
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C)
Lamiaceae, Apiaceae, Asteraceae, Poaceae
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D)
Lilliaceae, Cucurbitaceae, Poaceae, Asleraceae
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question_answer 140) The following features outline a system of plant classification : (i) unisexual flower are the most primitive within the angiosperm (ii) polyphyletic origin of angiosperm (iii) monocotyledons have been considered more primitive than dicotyledons Which one of the following system of classification represent above feature ?
A)
Linnaeus
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B)
Engter and Pranti
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C)
Rendle
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D)
Hutchinson
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question_answer 141) The following statements outlines the major feature of a system of classification : (i) Monophylctic origin of angiosperm (ii) Dicotyledons are the primitive over monocotyledons (iii) Division ofdicotyledonae into Ugnosae and Herbaceae Which of the following system of classification represents above features ?
A)
Linnaeus
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B)
Bentham and Hooker
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C)
Engler and Pranti
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D)
Hutchinson
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question_answer 142) To how many families to the following vegetable belong ? Pea, soyabcan, radish, cauliflower, cabbage, potato, tomato.
A)
two
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B)
three
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C)
four
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D)
five
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question_answer 143) Industrial production of ethanol from starch is brought about by a certain species of :
A)
Penicillin
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B)
Azotobacter
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C)
Saccharomyces
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D)
Lactobaciflus
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question_answer 144) In 1928, a scientist discovered an antibiotic which was found to be very effective. The name of scientist and the antibiotic respectively are :
A)
Woodruff and actinomycin
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B)
Waksman and streptomycin
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C)
Cesar Milstein and rifampicin
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D)
Alexander l-lemming and penicillin
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question_answer 145) Advancement in genetic engineering has been possible due to :
A)
oncogenes
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B)
exonucleases
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C)
transposons
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D)
endonucleases
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question_answer 146) Apart from DNA in the bacterial nucleoid, there is a circular extra chromosomal DNA, called :
A)
plasmid
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B)
meso some
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C)
chromosome
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D)
none of these
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question_answer 147) Seed habit was first originated in members of:
A)
ferns
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B)
cycadofilicales
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C)
gymnosperm
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D)
angiosperm
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question_answer 148) If Gnetum is not a flowering plant, it may be mistaken for a:
A)
tree fem
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B)
monocot plant
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C)
dicot plant
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D)
none of these
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question_answer 149) Which of the following is not functionally analogous with other in the group ?
A)
Antheridium
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B)
Archegonium
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C)
Oogonium
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D)
Ovule
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question_answer 150) Which one of the following gymnosperms shows the complete absence of archegonia in this ovules?
A)
Cycas
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B)
Ephedra
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C)
Gnetum
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D)
Ginfego
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question_answer 151) The occurrence of more than one embryo in a seed in know as :
A)
polar nuclei
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B)
polyembryony
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C)
porogamy
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D)
protandry
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question_answer 152) The deteriorative processes that naturally. Terminate their functional life are collectively called :
A)
sensescence
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B)
abscission
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C)
wilting
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D)
plasmolysis
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question_answer 153) Which of the following elements are considered essential for photolysis of water ?
A)
Ca and Cl
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B)
Mn and Cl
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C)
Zn and I
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D)
None of these
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question_answer 154) The development of eye in vertebrate embryology is studied under :
A)
neurogenesis
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B)
organogenesis
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C)
nologenesis
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D)
all of these
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question_answer 155) The Noble Prize for the discovery of TCA cycle and ATP biosynthesis was awarded to :
A)
Hans Krebs
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B)
Lipman
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C)
Krebs and Lipman jointly
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D)
Vishniac and Ochoa
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question_answer 156) Which of the following is not a feature of mangrove plant ?
A)
Production of respiration roots called pneumatophores
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B)
lack of slit like prop root
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C)
viviparous method of germination of seeds
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D)
all of the above
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question_answer 157) A and B genes are linked. What should be the genotype of progeny in a cross between AB/ab and ab/ab ?
A)
AA bb and aa bb
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B)
Aa Bb and aa bb
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C)
AA BB and aa bb
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D)
None of these
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question_answer 158) The part of m-RNA which removed after transcription by RNA spliting is :
A)
exons
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B)
liexane
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C)
introns
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D)
none of these
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question_answer 159) A spindle is organised during a process of meiosis, sometime formation of spindle is arrested by the use of:
A)
nitrous acid
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B)
cellulose
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C)
colchicine
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D)
phosphate
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question_answer 160) A phenomenon which include all those heritable changes, which after the phenotype of an individual is called ?
A)
Mutation
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B)
Lethality
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C)
Both (a) and (b)
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D)
None of these
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question_answer 161) The main difference between active and passive transport across cell membrane is that:
A)
active transport is more rapid than passive transport
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B)
passive transport is non-selective
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C)
passive transport is due to the concentration gradient across the cell membrane where as active transport is due to metabolic energy
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D)
passive transport is confined to anions, while acrive transport is confined to cations only
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question_answer 162) Which of the following does not obtain its nitrogen from captured animal i.e., is not an insectivorous plant ?
A)
Orobanche
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B)
Utriciilaria
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C)
Drosera
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D)
All of these
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question_answer 163)
List-I List-II A. Diameter of the helix 1. \[34\,\overset{\text{o}}{\mathop{\text{A}}}\,\] B. Distance between two adjacent 2. \[20\,\overset{\text{o}}{\mathop{\text{A}}}\,\] C. Distance between 2 complete turns 3. \[3\,\overset{\text{o}}{\mathop{\text{A}}}\,\] D. Length of the hydrogen bonds 4. \[4.4\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
Codes:
A)
A-1 B-3 C-2 D-4
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B)
A-2 B-4 C-1 D-3
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C)
A-4 B-2 C-3 D-1
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D)
A-1 B-4 C-2 D-3
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question_answer 164) Isochromosis are formed as a result of :
A)
longitudinal splitting of centromere
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B)
pairing of identical chromosomes
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C)
disjunction of bivalents
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D)
transverse division of centromere
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question_answer 165) The most widespread but distinctive cytogenerics process involved in speciation of higher plant is :
A)
autosomal mutation
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B)
polyploidy
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C)
apomixes
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D)
interspecific hybridization
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question_answer 166) The genetic code is said to be degenerate and universal which means that: (i) codon are common for higher and lower organisms (ii) amino acids may have more than one codon (iii) all amino acids have more than one codon Out of the above statement, correct statement is :
A)
(ii) and (iii) are correct
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B)
only the (iii) statement is correct
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C)
(i) and (ii) are correct
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D)
all are correct
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question_answer 167) Zinc is considered essential for the formation of plant hormone :
A)
abscisic acid
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B)
in dole acetic acid
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C)
gibberellic acid
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D)
none of these
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question_answer 168) The low temperature requirement for flowering was first noticed by :
A)
Nawaschin
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B)
Klippast
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C)
MacLeod
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D)
Lysenko
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question_answer 169) Which of the following codon is related to UAA and UAG functions ?
A)
UUU
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B)
UGA
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C)
AUG
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D)
GUG
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question_answer 170) When carbohydrates are the respiratory substrates the Respiratory Quotient (R.Q.) becomes:
A)
zero
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B)
more than one
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C)
less than one
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D)
one
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question_answer 171) The plants which can refix \[C{{O}_{2}}\] released during respiration and use it during photosynthesis are known as ;
A)
succulents
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B)
mesophytes
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C)
hydrophytes
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D)
non-succlents
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question_answer 172) Out of the following which one is not a millet:
A)
Triticum
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B)
Penicillium
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C)
Pennisetum
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D)
Eleiisine.
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question_answer 173) Litmus is a natural dye which is obtained from:
A)
algae
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B)
fungi
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C)
lichen
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D)
mosses
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question_answer 174) Commercially cork is obtained from llie bark of:
A)
Mangifera indica
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B)
Avadirachra indica
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C)
Qiterciis suber
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D)
Ficiis bengalensis
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question_answer 175) The part of Papaver sainniferwn from which opium is obtained is:
A)
seed
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B)
mature fruit
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C)
unripe fruit
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D)
stem and leaf
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question_answer 176) Calmodulein is a calcium protein complex in microtubules and microfilaments. It is involved in :
A)
cell-differenciation
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B)
synthesis of ATP
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C)
breakdown of ATP
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D)
cell motility
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question_answer 177) Who among the following discovered microtubules ?
A)
de Robertis and Franchi
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B)
Watson and Crick
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C)
Ziner and Lederberg
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D)
Boveri and Van Beneden
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question_answer 178) In idioblasts. crystals of calcium oxalate exist in different shapes needle like crystals of calcium oxalates are called :
A)
raphids
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B)
cystoliths
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C)
otoliths
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D)
sphaerophids
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question_answer 179) Nitrogenous excretory (waste) products in plants cells are :
A)
alkaloids like quinine and morphine
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B)
tannins and resins
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C)
latex and essential oils
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D)
all of the above
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question_answer 180) Raphids, sphaeraphides, druses are minerals crystals in plants cells of Nerium. Lefnna, Eichhornia, onion. These are chemically:
A)
\[CaC{{O}_{3}}\]
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B)
calcium oxalate
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C)
silica
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D)
\[CaS{{O}_{4}}\]
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question_answer 181) Insulin is a fan shaped carbohydrats crystals and is found in cell sap of:
A)
tubers of dahlia
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B)
tubers of Jeruselum (artichoke)
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C)
dandelion
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D)
all of the above
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question_answer 182) Most common mineral crystals are of calcium oxalate \[[Ca({{C}_{2}}{{p}_{4}}),2{{H}_{2}}O].\] When these are satellite in shape and found in clusters, are called:
A)
sphaeraphides
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B)
druse
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C)
both (a) and (b)
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D)
cistolith
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question_answer 183) Smallest chromosomes (size \[0.025\mu \]) are found in algae. Largest eukaryotic normal chrom- osome is \[30\mu \] in size and is found in :
A)
Trilliuin
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B)
Ophioglossum
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C)
Radiolarians
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D)
Mays
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question_answer 184) Which protein of nucleoplasm activates DNA to replicate the transcribe?
A)
Histone
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B)
Non-histone
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C)
Phospho protein
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D)
Nucleoproteins
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question_answer 185) Experiment to demonstrate importance of nucleus in the controlling growth and heredity were performed on :
A)
Acetabularia
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B)
Neurospora
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C)
eucocytes
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D)
star fish
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question_answer 186) Which one of the following phyla is characterized by the absence of a true coelom characterised by the absence of a true coelom?
A)
Echinodermata
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B)
Annelida
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C)
Mollusca
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D)
Nematoda
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question_answer 187) Which of the following is the correct pairing of the classification group and common example?
A)
Porifera-sea fan
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B)
Crustacea-cattle fish
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C)
Plathylielminthes-Neries
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D)
Mastigophora-Volvox
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question_answer 188) Flowers of which one of the following plants bears 2 minute scales called lodicules ?
A)
Gossypidin herbarium
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B)
Helianthns annuus
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C)
Triticum vulgare
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D)
Citrus medico.
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question_answer 189) Gynan drophore is found in the members of family :
A)
Brassica ceae
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B)
Capparidaceae
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C)
Malvaceae
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D)
Ranunculaceae
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question_answer 190) The type specimen used by tlie author in the original publication is known as :
A)
lectotype
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B)
isotype
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C)
halotype
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D)
syntype
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question_answer 191) Syngensious stamens occur in members of family :
A)
Malvaceae
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B)
Orchidaceae
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C)
Solanaceae
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D)
Asteraceae
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question_answer 192) Biofertilizers are used to increase the availability of nutrient like :
A)
nitrogen
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B)
phosphorus
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C)
potassium
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D)
both (a) and (b)
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question_answer 193) Which bacterium was the first biopesticide to be used on a commercial scale in the world?
A)
Bacillus thiiringiensis
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B)
Bac.Uli.is polymyxa
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C)
Bacillus brevis
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D)
Bacillits lichenifonnis
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question_answer 194) Out of the following which is not concerned with biotechnology ?
A)
Biogas production
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B)
Sewage treatment
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C)
Bio fertilizers
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D)
Wood seasoning
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question_answer 195) Pentadiplandra brazzeana produces a protein called brazzein which is about 2,000 times as sweet as sugar. This plant belongs to :
A)
Australia
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B)
South America
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C)
Africa
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D)
Canada
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question_answer 196) Classification of algae into II classes was made by Fritsh on the basis of flagellation, pigmentation and type of reserve food. out of this. the main criteria used in algal classification/grouping of algae is :
A)
chemical composition of cell wall
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B)
type of pigmentation
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C)
unicellular sex organ
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D)
aquatic liabitat
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question_answer 197) The minimum number of chromosome1 recorded in an algae are n = 2. The algae is :
A)
Laininaria
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B)
Porphyra
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C)
Netrium
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D)
Chlamydomonas
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question_answer 198) A members of RJiodophyceae (red algae) which is widely used as weed is called irish moss. Its alternative name is :
A)
Ficus
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B)
Laminaria
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C)
Ulothrix
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D)
Chondrus
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question_answer 199) From a cell wall of Chondrus a sulphated polysaccharides is obtained which is used clearingagentinliquas (beer).The substance is:
A)
funor
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B)
agar
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C)
carrageenm
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D)
none of these
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question_answer 200) In angiosperm. the egg is :
A)
completely surrounded by a wall
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B)
surrounded by a wall only at the micro pylal end
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C)
surrounded by a wall only at chalazal end
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D)
devoid of wall
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