A particle executes simple harmonic oscillation with an amplitude a. The period of oscillation is T. The minimum time taken by the particle to travel half of the amplitude from the equilibrium position is:-
A)
T/2
done
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B)
T/4
done
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C)
T/8
done
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D)
T/12
done
clear
View Answer play_arrow
If the cold junction of a thermo-couple is kept at \[{{0}^{o}}C\]and the hot junction is kept at \[{{T}^{o}}C,\] then the relation between neutral temperature \[({{T}_{n}})\] and temperature of inversion \[({{T}_{i}})\] is :-
A)
\[{{T}_{n}}={{T}_{i}}+T\]
done
clear
B)
\[{{T}_{n}}={{T}_{i}}/2\]
done
clear
C)
\[{{T}_{n}}=2{{T}_{i}}\]
done
clear
D)
\[{{T}_{n}}={{T}_{i}}-T\]
done
clear
View Answer play_arrow
A transistor-oscillator using a resonant circuit with an inductor L (of negligible resistance) and a capacitor C in series produce oscillations of frequency f. If L is doubled and C is changed to 4C, the frequency will be :-
A)
\[\frac{f}{4}\]
done
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B)
\[8\,f\]
done
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C)
\[\frac{f}{2\sqrt{2}}\]
done
clear
D)
\[\frac{f}{2}\]
done
clear
View Answer play_arrow
The core of a transformer is laminated because :-
A)
Energy losses due to eddy currents may be minimized
done
clear
B)
The weight of the transformer may be reduced
done
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C)
Rusting of the core may be prevented
done
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D)
Ratio of voltage in primary and secondary may be increased
done
clear
View Answer play_arrow
A car is moving towards a high cliff. The car driver sounds a horn of frequency T. The reflected sound heard by the driver has a frequency 2f. If V be the velocity of sound then the velocity of the car, in the same velocity units, will be :-
A)
\[\frac{v}{3}\]
done
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B)
\[\frac{v}{4}\]
done
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C)
\[\frac{v}{2}\]
done
clear
D)
\[\frac{v}{\sqrt{2}}\]
done
clear
View Answer play_arrow
A block of mass m is placed on a smooth wedge of inclination \[\theta \]. The whole system is accelerated horizontally so that the block does not slip on the wedge. The force exerted by the wedge on the block (g is acceleration due to gravity) will be :-
A)
\[mg\,\sin \theta \]
done
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B)
mg
done
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C)
\[mg\,/cos\theta \]
done
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D)
\[mgcos\theta \]
done
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View Answer play_arrow
Consider a system of two particles having masses \[{{m}_{1}}\]and \[{{m}_{2}}\]. If the particle of mass \[{{m}_{1}}\] is pushed towards the mass centre of particles through a distance 'd?, by what distance would the particle of mass \[{{m}_{2}}\] move so as to keep the mass centre of particles at the original postion:-
A)
\[\frac{{{m}_{1}}}{{{m}_{2}}}\,d\]
done
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B)
\[d\]
done
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C)
\[\frac{{{m}_{2}}}{{{m}_{1}}}\]
done
clear
D)
\[\frac{{{m}_{1}}}{{{m}_{1}}+{{m}_{2}}}\,d\]
done
clear
View Answer play_arrow
One mole of an ideal gas at an initial temperature of T K does 6 R joules of work adiabatically. If the ratio of specific heats of this gas at constant pressure and at constant volume is \[\frac{5}{3},\] the final temperature of gas will be :-
A)
\[(T-2.4)\,K\]
done
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B)
\[(T+4)\,K\]
done
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C)
\[(T-4)\,K\]
done
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D)
\[(T-2.4)\,K\]
done
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View Answer play_arrow
If a ball is thrown vertically upwards with speed u, the distance covered during the last T seconds of its ascent is :-
A)
ut
done
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B)
\[\frac{1}{2}g{{t}^{2}}\]
done
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C)
\[ut-\frac{1}{2}g{{t}^{2}}\]
done
clear
D)
\[(u+gt)t\]
done
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View Answer play_arrow
A monkey of mass 20 kg is holding a vertical rope. The rope will not break when a mass of 25 kg is suspended from it but will break if the mass exceeds 25 kg. What is the maximum acceleration with which the monkey can climb up along the rope? \[(g=10\,m/{{s}^{2}})\]
A)
\[5\text{ }m/{{s}^{2}}\]
done
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B)
\[\text{10 }m/{{s}^{2}}\]
done
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C)
\[\text{25 }m/{{s}^{2}}\]
done
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D)
\[\text{2}\text{.5 }m/{{s}^{2}}\]
done
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View Answer play_arrow
A ball rolls without slipping. The radius of gyration of the ball about an axis passing through its centre of mass is K. If radius of the ball be R, then the fraction of total energy associated with its rotational energy will be :-
A)
\[\frac{{{K}^{2}}+{{R}^{2}}}{{{R}^{2}}}\]
done
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B)
\[\frac{{{K}^{2}}}{{{R}^{2}}}\]
done
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C)
\[\frac{{{K}^{2}}}{{{K}^{2}}+{{R}^{2}}}\]
done
clear
D)
\[\frac{{{R}^{2}}}{{{K}^{2}}+{{R}^{2}}}\]
done
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View Answer play_arrow
The potential energy of a simple harmonic oscillator when the particle is half way to its end point is :-
A)
\[\frac{2}{3}\,E\]
done
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B)
\[\frac{1}{8}\,E\]
done
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C)
\[\frac{1}{4}\,E\]
done
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D)
\[\frac{1}{2}\,E\]
done
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View Answer play_arrow
An electron is moving round the nucleus of a hydrogen atom in a circular orbit of radius r. The Coulomb force F between the two is :-
A)
\[K\frac{{{e}^{2}}}{{{r}^{2}}}\hat{r}\]
done
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B)
\[-K\frac{{{e}^{2}}}{{{r}^{3}}}\hat{r}\]
done
clear
C)
\[K\frac{{{e}^{2}}}{{{r}^{3}}}\vec{r}\]
done
clear
D)
\[-K\frac{{{e}^{2}}}{{{r}^{3}}}\vec{r}\] (Where \[K=\frac{1}{4\pi {{\varepsilon }_{0}}}\])
done
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View Answer play_arrow
Fuse wire is a wire of
A)
high resistance and high melting point
done
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B)
high resistance and low melting point
done
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C)
low resistance and low melting point
done
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D)
low resistance and hight melting point
done
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View Answer play_arrow
Reverse bias applied to a junction diode
A)
lowers the potential barrier
done
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B)
raises the potential barrier
done
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C)
increases the majority carrier current
done
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D)
increases the minority carrier current
done
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View Answer play_arrow
A n-p-n transistor conducts when
A)
both collector and emitter are positive with respect to the base
done
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B)
collector is positive and emitter is negative with respect to the base
done
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C)
collector is positive and emitter is at same potential as the base
done
clear
D)
both collector and emitter are negative with respect to the base
done
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View Answer play_arrow
According to Curie's law, the magnetic susceptibility of a substance at an absolute temperature T is proportional to :-
A)
\[1/T\]
done
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B)
T
done
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C)
\[1/{{T}^{2}}\]
done
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D)
\[{{T}^{2}}\]
done
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View Answer play_arrow
A bulb is located on a wall. Its image is to be obtained on a parallel wall with the help of convex lens. If the distance between parallel walls is 'd' then required focal length of lens placed in between the walls is :-
A)
Only \[\frac{d}{4}\]
done
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B)
\[\frac{d}{2}\]
done
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C)
More than \[\frac{d}{4}\] but less than \[\frac{d}{2}\]
done
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D)
Less than or equal to \[\frac{d}{4}\]
done
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View Answer play_arrow
For a black body at temperature \[{{727}^{o}}C,\] its radiating power is 60 watt and temperature of surrounding is\[{{227}^{o}}C\]. If temperature of black body is changed to \[{{1227}^{o}}C\] then its radiating power will be :-
A)
304 W
done
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B)
320 W
done
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C)
240 W
done
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D)
120 W
done
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View Answer play_arrow
An object of mass 3kg is at rest. Now a force of \[\vec{F}=6{{i}^{2}}\hat{i}+4t\,\hat{j}\] is applied on the object then velocity of object at \[t=3\]second is :-
A)
\[18\text{ }\hat{i}+3\hat{j}\]
done
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B)
\[18\,\hat{i}+6\hat{j}\]
done
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C)
\[3\,\hat{i}+18\hat{j}\]
done
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D)
\[18\,\hat{i}+4\hat{j}\]
done
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View Answer play_arrow
The velocity of electromagnetic wave is parallel to :-
A)
\[\vec{B}\times \vec{E}\]
done
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B)
\[\vec{E}\times \vec{B}\]
done
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C)
\[\vec{E}\]
done
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D)
\[\vec{B}\]
done
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View Answer play_arrow
A sample of radioactive element containing \[4\times {{10}^{16}}\]active nuclei. Half life of element is 10 days, then number of decayed nuclei after 30 days
A)
\[0.5\times {{10}^{16}}\]
done
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B)
\[2\times {{10}^{16}}\]
done
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C)
\[3.5\times {{10}^{16}}\]
done
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D)
\[1\times {{10}^{16}}\]
done
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View Answer play_arrow
The current (I) in the circuit will be :-
A)
\[\frac{5}{40}A\]
done
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B)
\[\frac{5}{50}A\]
done
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C)
\[\frac{5}{10}A\]
done
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D)
\[\frac{5}{20}A\]
done
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View Answer play_arrow
Biological importance of Ozone layer is :-
A)
It stops ultraviolet rays
done
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B)
Ozone layer reduces green house effect
done
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C)
Ozone layer reflects radio waves
done
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D)
Ozone layer controls \[{{O}_{2}}/{{H}_{2}}\] ratio in atmosphere
done
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View Answer play_arrow
A scientist says that the efficiency of his heat engine which work at source temperature \[{{127}^{o}}C\] and sink temperature \[{{27}^{o}}C\] is \[26%,\]then
A)
It is impossible
done
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B)
It is possible but less probable
done
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C)
It is quite probable
done
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D)
Data are incomplete
done
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View Answer play_arrow
If the tension and diameter of a sonometer wire of fundamental frequency n is doubled and density is halved then its fundamental frequency will become
A)
\[\frac{n}{4}\]
done
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B)
\[\sqrt{2}\,n\]
done
clear
C)
\[n\]
done
clear
D)
\[\frac{n}{\sqrt{2}}\]
done
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View Answer play_arrow
250 N force is required to raise 75 kg mass from a pulley. If rope is pulled 12 m then the load is lifted to 3m, the efficiency of pulley system will be :-
A)
\[25%\]
done
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B)
\[33.3%\]
done
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C)
\[75%\]
done
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D)
\[90%\]
done
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View Answer play_arrow
For the given reaction, the particle X is - \[_{6}{{C}^{11}}{{\to }_{5}}{{B}^{11}}+{{\beta }^{+}}+X\]
A)
Neutron
done
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B)
Anti neutrino
done
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C)
Neutrino
done
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D)
Proton
done
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View Answer play_arrow
Rainbow is formed due to :-
A)
Scattering & refraction
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B)
Total internal reflection & dispersion
done
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C)
Reflection only
done
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D)
Diffraction and dispersion
done
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View Answer play_arrow
Two stationary sources each emitting waves of wave length \[\lambda \]. An observer moves from one source to other with velocity u. Then number of beats heared by him:-
A)
\[\frac{2u}{\lambda }\]
done
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B)
\[\frac{u}{\lambda }\]
done
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C)
\[\sqrt{u\lambda }\]
done
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D)
\[\frac{u}{2\lambda }\]
done
clear
View Answer play_arrow
Given Truth table is correct for :-
A B Y 1 1 1 1 0 0 0 1 0 0 0 0
A)
NAND
done
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B)
AND
done
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C)
NOR
done
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D)
OR
done
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View Answer play_arrow
Who evaluated the mass of electron indirectly with help of charge:-
A)
Thomson
done
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B)
Millikan
done
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C)
Rutherford
done
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D)
Newton
done
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View Answer play_arrow
For a planet having mass equal to mass of the earth but radius is one fourth of radius of the earth, Then escape velocity for this planet will be:-
A)
\[11.2\,km/s\]
done
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B)
\[22.4\,km/s\]
done
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C)
\[5.6\text{ }km/s\]
done
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D)
\[44.8\,km/s\]
done
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View Answer play_arrow
A bubble in glass slab \[(\mu =1.5)\] when viewed from one side appears at 5 cm and 2cm from other side, then thickness of slab is:-
A)
\[3.75\text{ }cm\]
done
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B)
\[3\text{ }cm\]
done
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C)
\[10.5\text{ }cm\]
done
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D)
\[2.5\text{ }cm\]
done
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View Answer play_arrow
Two particles separated at a horizontal distance X as shown in fig. they projected at the same line as shown in fig. with different initial speeds. The time after which the Horizontal distance between them become zero
A)
\[\frac{x}{u}\]
done
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B)
\[\frac{u}{2x}\]
done
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C)
\[\frac{2u}{x}\]
done
clear
D)
None of these
done
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View Answer play_arrow
The terminal potential difference of a cell is greater than its emf when :-
A)
A battery of less emf is connected in it series
done
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B)
A battery of higher emf is connected in its series.
done
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C)
A battery of higher emf is connected in its parallel.
done
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D)
A battery of less emf is connected in its parallel.
done
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View Answer play_arrow
The energy and capacity of a charged parallel plate capacitor are E and C respectively. Now a dielective slab of \[{{\in }_{r}}=6\] is inserted in it then energy and capacity becomes (Assuming charge on plates remains constant)
A)
\[6E,\,\,6C\]
done
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B)
\[E,\,C\]
done
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C)
\[\frac{E}{6},\,6\,C\]
done
clear
D)
\[E,6C\]
done
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View Answer play_arrow
The total energy of an electron is \[3.555\text{ }MeV,\]then its Kinetic energy is :-
A)
\[3.545\text{ }MeV\]
done
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B)
\[3.045\text{ }MeV\]
done
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C)
\[3.5\text{ }MeV\]
done
clear
D)
None
done
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View Answer play_arrow
When a stick is released (as shown in fig.) Its free end velocity when it strikes the ground is:-
A)
\[4.2\text{ }m/s\]
done
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B)
\[1.4\text{ }m/s\]
done
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C)
\[2.8\text{ }m/s\]
done
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D)
\[\sqrt{6}\text{ }m/s\]
done
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View Answer play_arrow
A coil of one loop is made from a wire of length L and there after a coil of two loops is made from same wire, then the ratio of magnetic field at the centre of coils will be
A)
\[1:4\]
done
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B)
\[1:1\]
done
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C)
\[1:8\]
done
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D)
\[4:1\]
done
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View Answer play_arrow
The speed of a boat is \[5\text{ }km/hr\] in still water. It crosses a river of width 1km along the shortest possible path in 15 minutes. The velocity of river water is
A)
\[\text{3 }km/hr\]
done
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B)
\[4\text{ }km/hr\]
done
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C)
\[\text{5 }km/hr\]
done
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D)
\[\text{2 }km/hr\]
done
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View Answer play_arrow
\[{{10}^{5}}\] coloumb charge liberated 1 gm silver \[(Ag)\]. If now charge is doubled then the amount of liberated \[Ag\] will be
A)
\[1\,gm\]
done
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B)
\[2\,gm\]
done
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C)
\[3\,gm\]
done
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D)
\[4\,gm\]
done
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View Answer play_arrow
Work function of a metal surface is\[\phi =~1.5\,eV\]. If a light of wavelength \[5000\overset{o}{\mathop{A}}\,\]falls on it then the maximum K.E. of ejected electron will be
A)
\[1.2\,eV\]
done
clear
B)
\[0.98\,eV\]
done
clear
C)
\[0.45\text{ }eV\]
done
clear
D)
\[0\text{ }eV\]
done
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View Answer play_arrow
Two coil have a mutual inductance\[0.005\text{ }H\]. The current changes in first coil according to equation \[I={{I}_{0}}\sin \omega t\] where \[{{I}_{0}}=2A\] and \[\omega =100\pi \] rad/sec. The maximum value of emf in second coil is
A)
\[4\pi \]
done
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B)
\[3\pi \]
done
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C)
\[2\pi \]
done
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D)
\[\pi \]
done
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View Answer play_arrow
For a Rocket propulsion velocity of exhaust gases relative to rocket is 2 km/s. If mass of rocket system is 1000 kg, then the rate of fuel consumption for a rocket to rise up with acceleration \[4.9\text{ }m/{{s}^{2}}\]will be
A)
\[12.25\text{ }kg/s\]
done
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B)
\[17.5\text{ }kg/s\]
done
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C)
\[7.35\text{ }kg/s\]
done
clear
D)
\[5.2\text{ }kg/s\]
done
clear
View Answer play_arrow
Fischer-Tropsch process is used in the manufacture of:-
A)
Synthetic petrol
done
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B)
Ethanol
done
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C)
Benzene
done
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D)
Ethanoic acid
done
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View Answer play_arrow
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
Which of the following compounds can be purified by steam distillation method :-
A)
O-nitrophenol
done
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B)
Nitrobenzene
done
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C)
Aniline
done
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D)
All of these
done
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View Answer play_arrow
Which of the following has highest conductance
A)
\[0.1M\,\,C{{H}_{3}}COOH\]
done
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B)
\[0.1\text{ }M\text{ }NaCl\]
done
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C)
\[0.1\text{ }M\text{ }KN{{O}_{3}}\]
done
clear
D)
\[0.1\text{ }M\text{ }HCl\]
done
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View Answer play_arrow
Which of the following compounds can liberate \[C{{O}_{2}}\]with \[NaHC{{O}_{3}}\]:-
A)
2, 4, 6-trinitrophenol
done
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B)
Benzoic acid
done
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C)
N-alkyl ammonium chloride
done
clear
D)
All the above
done
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View Answer play_arrow
The following conversion can't be done by :-
A)
Clemmesen - reduction
done
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B)
Wolff - Kishner - reduction
done
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C)
Wurtz - reaction
done
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D)
Red P and HI at \[200{}^\circ C\]
done
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View Answer play_arrow
Which of the following ether is most unreactive towards cone. \[HBr\]:-
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
Which can form Schiffs base?
A)
\[RN{{H}_{2}}\]
done
clear
B)
\[{{R}_{2}}NH\]
done
clear
C)
\[{{R}_{3}}N\]
done
clear
D)
None of these
done
clear
View Answer play_arrow
Ethylene dichloride and ethylidene dichloride are.
A)
Geometrical isomers
done
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B)
Chain isomers
done
clear
C)
Position isomers
done
clear
D)
Not isomers
done
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View Answer play_arrow
Which gives only a single allylic bromide on heating with NBS :-
A)
\[C{{H}_{2}}=\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,-CH=C{{H}_{2}}\]
done
clear
B)
\[C{{H}_{3}}C{{H}_{2}}-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,-C{{H}_{2}}\]
done
clear
C)
\[C{{H}_{2}}=CH-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-C{{H}_{3}}\]
done
clear
D)
\[C{{H}_{2}}-CH-=\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,-C{{H}_{3}}\]
done
clear
View Answer play_arrow
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
Which is not a green house gas in the following:-
A)
Carbondioxide
done
clear
B)
Methane
done
clear
C)
Phosgene
done
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D)
Nitrogen oxide
done
clear
View Answer play_arrow
The specific conductance of an acid at a dilution of 8 litre is\[0.0238\text{ }mho/cm\]. While \[{{\pi }^{\propto }}\] for this acid is\[390\text{ }mho\text{ }c{{m}^{2}}/eq\]\[390\text{ }mho\text{ }c{{m}^{2}}/eq\]\[390\text{ }mho\text{ }c{{m}^{2}}/eq\]. Find out the degree of ionisation :-
A)
\[0.48\]
done
clear
B)
\[0.38\]
done
clear
C)
\[0.28\]
done
clear
D)
\[0.58\]
done
clear
View Answer play_arrow
The most stable enolic form of 2, 4-pentanedione is :-
A)
\[C{{H}_{2}}=\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,H-\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,H=C{{H}_{2}}\]
done
clear
B)
\[C{{H}_{3}}=\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,=C=\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,=C{{H}_{3}}\]
done
clear
C)
\[C{{H}_{2}}=\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,-C{{H}_{2}}\underset{O}{\mathop{-\underset{||}{\mathop{C}}\,}}\,=C{{H}_{3}}\]
done
clear
D)
\[C{{H}_{2}}-\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,=CH-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-C{{H}_{3}}\]
done
clear
View Answer play_arrow
The final product (II) is :-
A)
Epoxy cyclohexane
done
clear
B)
2-chloro cyclohexanol
done
clear
C)
\[(\pm )\]cis - 1,2-cyclohexanediol
done
clear
D)
\[(\pm )\] trans-1,2-cyclohexanediol
done
clear
View Answer play_arrow
Which is most basic compound :-
A)
done
clear
B)
done
clear
C)
\[C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}\]
done
clear
D)
done
clear
View Answer play_arrow
has the IUPAC name :-
A)
Methoxy ethane
done
clear
B)
Ethoxy methane
done
clear
C)
Methoxy propane
done
clear
D)
Propoxy methane
done
clear
View Answer play_arrow
The necessary and sufficient condition for a molecule to be optically active is that :-
A)
It must contain asymmetric carbon atoms
done
clear
B)
It must be symmetric
done
clear
C)
It must be identical with its mirror image
done
clear
D)
It must be non-identical with its mirror image
done
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View Answer play_arrow
\[{{(C{{H}_{3}})}_{3}}CMgCl\] on reaction with \[{{D}_{2}}O\] gives:-
A)
\[{{(C{{H}_{3}})}_{3}}CD\]
done
clear
B)
\[{{(C{{H}_{3}})}_{3}}COD\]
done
clear
C)
\[{{(C{{D}_{3}})}_{3}}CD\]
done
clear
D)
\[{{(C{{D}_{3}})}_{3}}COD\]
done
clear
View Answer play_arrow
The number of chiral centres in the open chain structure of fructose is :-
A)
5
done
clear
B)
4
done
clear
C)
3
done
clear
D)
2
done
clear
View Answer play_arrow
At the condition of maximum buffer action, pH of basic buffer is 10. Then find out pH of this buffer solution when concentration of salt is 100 times to the base :-
A)
8
done
clear
B)
6
done
clear
C)
4
done
clear
D)
10
done
clear
View Answer play_arrow
The dissociation of solid NH4HS \[N{{H}_{4}}H{{S}_{(s)}}N{{H}_{3\,(g)}}+{{H}_{2}}{{S}_{(g)}}\] If equal pressure of the mixture is \[1.2\]atm. Then calculate the value of \[{{K}_{p}}\]:-
A)
\[0.66\text{ }at{{m}^{2}}\]
done
clear
B)
\[0.46\text{ }at{{m}^{2}}\]
done
clear
C)
\[0.36\text{ }at{{m}^{2}}\]
done
clear
D)
\[0.56\text{ }at{{m}^{2}}\]
done
clear
View Answer play_arrow
Which of the following is an aromatic nucleophilic substitution reaction :-
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
The correct order of nucleophilicities of following species is :-
A)
\[C{{H}_{3}}{{O}^{O-}}>C{{H}_{3}}CO{{O}^{O-}}>C{{H}_{3}}{{S}^{O-}}\]
done
clear
B)
\[C{{H}_{3}}{{S}^{O-}}>C{{H}_{3}}{{O}^{O-}}>C{{H}_{3}}CO{{O}^{O-}}\]
done
clear
C)
\[C{{H}_{3}}CO{{O}^{O-}}>C{{H}_{3}}{{S}^{O-}}>C{{H}_{3}}{{O}^{O-}}\]
done
clear
D)
\[C{{H}_{3}}{{S}^{O-}}>C{{H}_{3}}CO{{O}^{O-}}>C{{H}_{3}}{{O}^{O-}}\]
done
clear
View Answer play_arrow
Which of the following is not an amino acid:-
A)
done
clear
B)
\[C{{H}_{3}}-\overset{CON{{H}_{2}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,H-COOH\]
done
clear
C)
\[C{{H}_{3}}-\overset{N{{H}_{2}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,H-COOH\]
done
clear
D)
\[{{H}_{2}}N-C{{H}_{2}}-COOH\]
done
clear
View Answer play_arrow
In a solution, \[0.1M\,\,C{{H}_{3}}COOH\] solution and \[0.1M\text{ }HCl\]are present. Then find out the pH of solution
A)
\[2\]
done
clear
B)
\[1\]
done
clear
C)
\[4\]
done
clear
D)
\[3\]
done
clear
View Answer play_arrow
(R)-2-Bromobutane is hydrolyzed with aq. \[KOH\]under \[S{{N}^{2}}\]reaction conditions. The product formed is :-
A)
(R)-2-butanol
done
clear
B)
(S)-2-butanol
done
clear
C)
(R)- and (S)-2-butanol \[(1:1)\]
done
clear
D)
(R)- and (S)-2-butanol \[(2:1)\]
done
clear
View Answer play_arrow
Silver benzoate on heating with bromine in carbon tetrachloride forms :-
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
Among the following fibres, which one is a poly amide :-
A)
Dacron
done
clear
B)
Orion
done
clear
C)
Nylon-6
done
clear
D)
Rayon
done
clear
View Answer play_arrow
\[100\,ml,\] \[\frac{N}{5}\,N{{H}_{4}}OH\]is mixed with\[100\text{ }ml,\]\[\frac{N}{5}\,HCl\]. Then find out the pH of resulting solution while \[{{K}_{b}}={{10}^{-5}}\]:-
A)
4
done
clear
B)
5
done
clear
C)
9
done
clear
D)
6
done
clear
View Answer play_arrow
In which of the following reactions water does not acts as hydrolytic agent :-
A)
\[Ca{{C}_{2}}+{{H}_{2}}O\]
done
clear
B)
\[PB{{r}_{3}}+{{H}_{2}}O\]
done
clear
C)
\[N{{H}_{3}}+{{H}_{2}}O\]
done
clear
D)
\[C{{a}_{3}}{{P}_{2}}+{{H}_{2}}O\]
done
clear
View Answer play_arrow
Which of the following products may be formed in the given reaction :-
A)
done
clear
B)
done
clear
C)
done
clear
D)
All the above
done
clear
View Answer play_arrow
Benzyl chloride can be prepared from toluene by chlorination with :-
A)
\[SOC{{l}_{2}}\]
done
clear
B)
\[S{{O}_{2}}C{{l}_{2}}\]
done
clear
C)
\[C{{l}_{2}}\]
done
clear
D)
Both (b) and (c)
done
clear
View Answer play_arrow
Which of the following is an anti-AIDS drug:-
A)
Crixivan
done
clear
B)
Azidothymidine (AZT)
done
clear
C)
Lamivudine (3-TC)
done
clear
D)
All of these
done
clear
View Answer play_arrow
In 100 lit saturated solution of \[AlC{{l}_{3}},\] \[10.65\text{ }m\text{ }gm\] of \[C{{l}^{-}}\] are present. Then find out the \[{{K}_{sp}}\] of \[AlC{{l}_{3}}\]
A)
\[27\times {{10}^{-24}}\]
done
clear
B)
\[1.0\times {{10}^{-24}}\]
done
clear
C)
\[4\times {{10}^{-24}}\]
done
clear
D)
\[2.7\times {{10}^{-24}}\]
done
clear
View Answer play_arrow
Which statement is false :-
A)
\[{{H}^{-}}\] is larger than \[{{I}^{-}}\]
done
clear
B)
Boranes are electron deficient molecules
done
clear
C)
Regular use of \[{{D}_{2}}O\] instead of \[{{H}_{2}}O\] can be fatal
done
clear
D)
Metallic hydrides are interstitial hydride
done
clear
View Answer play_arrow
The order of decreasing stability of the anions is:-
\[\underset{I}{\mathop{{{(C{{H}_{3}})}_{3}}\overset{O-}{\mathop{C}}\,}}\,\] \[\underset{II}{\mathop{{{(C{{H}_{3}})}_{2}}\overset{O-}{\mathop{C}}\,}}\,H\] \[\underset{III}{\mathop{C{{H}_{3}}\overset{O-}{\mathop{C}}\,}}\,{{H}_{2}}\] \[\underset{IV}{\mathop{{{C}_{6}}{{H}_{3}}\overset{O-}{\mathop{C}}\,}}\,{{H}_{2}}\]
A)
\[I>II>III>IV\]
done
clear
B)
\[IV>III>II>I\]
done
clear
C)
\[IV>III>I>II\]
done
clear
D)
\[I>II>IV>III\]
done
clear
View Answer play_arrow
Which is incorrect statement:-
A)
Bridgehead halides are inert to both \[S{{N}^{1}}\]and \[S{{N}^{2}}\]reactions
done
clear
B)
The first step in both \[S{{N}^{1}}\]and \[{{E}^{1}}\] reactions is the same
done
clear
C)
\[S{{N}^{2}}\] reactions proceed with total retention of configuration
done
clear
D)
All the above
done
clear
View Answer play_arrow
Triglycerides which constitute natural fats and oils are cleaved into glycerol and fatty acids by the enzyme:-
A)
Pepsin
done
clear
B)
Trypsin
done
clear
C)
Diastase
done
clear
D)
Lipase
done
clear
View Answer play_arrow
For a second order reaction in which both the reactants have same equal initial concentration. The time taken for 20% completion of reaction is 500 sec. Then in what time reaction will be completed 60% :-
A)
1500 sec
done
clear
B)
500 sec
done
clear
C)
250 sec
done
clear
D)
3000 sec
done
clear
View Answer play_arrow
In which of the following molecule central atom has two different oxidation state :-
A)
\[{{H}_{2}}{{S}_{2}}{{O}_{8}}\]
done
clear
B)
\[{{H}_{4}}{{P}_{2}}{{O}_{7}}\]
done
clear
C)
\[{{H}_{2}}{{S}_{2}}{{O}_{3}}\]
done
clear
D)
\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
done
clear
View Answer play_arrow
The relative reactivity of \[{{1}^{o}},{{2}^{o}}\] and \[{{3}^{o}}\]-H in chlorination reaction has been found to be \[1:3.\,8:5\]. In the reaction:-
The ratio of amounts of the products
and
is expected to be:-
A)
\[1:3.8:5:1\]
done
clear
B)
\[3:7.6:5:6\]
done
clear
C)
\[3:7.6:5:3\]
done
clear
D)
\[1:7.6:5:1\]
done
clear
View Answer play_arrow
Which is most stable carbocation :-
A)
done
clear
B)
\[C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{\overset{\oplus }{\mathop{C}}\,}}\,}}\,-C{{H}_{3}}\]
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
An example of natural biopolymer is :-
A)
DNA
done
clear
B)
PMMC
done
clear
C)
Teflon
done
clear
D)
PVC
done
clear
View Answer play_arrow
Hydrogenation reaction is carried out at 500 K. If the same reaction is carried out in the presence of catalyst at the same rate, the temperature is 400K. Calculate the activation energy if catalyst lowers the activation energy by\[20\text{ }KJ/mol\]:-
A)
\[100\text{ }KJ/mol\]
done
clear
B)
\[50\text{ }KJ/mol\]
done
clear
C)
\[30\text{ }KJ/mol\]
done
clear
D)
\[20\text{ }KJ/mol\]
done
clear
View Answer play_arrow
What is the similarity between seed germination and breaking of rocks by prehistoric man :-
A)
Turgor pressure
done
clear
B)
Root pressure
done
clear
C)
Imbibition pressure
done
clear
D)
Osmotic pressure
done
clear
View Answer play_arrow
Which one of the following gland is structurally saccular gland:-
A)
Sweat gland
done
clear
B)
Crypt of lieberkuhn
done
clear
C)
Gastric gland
done
clear
D)
Sebaceous gland
done
clear
View Answer play_arrow
Crossing over and linkage can be best studied in :-
A)
Haploid
done
clear
B)
Diploid
done
clear
C)
Bacteria
done
clear
D)
Virus
done
clear
View Answer play_arrow
Which form trans membrane pores in bacterial cell :-
A)
NK cell
done
clear
B)
Complementary system
done
clear
C)
B-lymphocyte
done
clear
D)
both (a) and (b)
done
clear
View Answer play_arrow
Development of male gametophyte inside the anther in called:-
A)
Ex-situ
done
clear
B)
In-situ
done
clear
C)
In-vitro
done
clear
D)
All of the above
done
clear
View Answer play_arrow
Golden age of Dianosaurs was:-
A)
Triassic period
done
clear
B)
Jurassic period
done
clear
C)
Devonian period
done
clear
D)
Cambrian period
done
clear
View Answer play_arrow
Usually triplet codons are read in which direction :-
A)
\[3'-5''\]
done
clear
B)
\[5'-3''\]
done
clear
C)
\[5'-5''\]
done
clear
D)
\[3'-3''\]
done
clear
View Answer play_arrow
Steller's sea cow and passanger pigeon were extinct due to :-
A)
Habitat loss by human
done
clear
B)
Over exploitation by human
done
clear
C)
Introduction of alien species
done
clear
D)
Co-extinction
done
clear
View Answer play_arrow
In Penicum & Chloris type of \[{{C}_{4}}\] plants the 4C acid transported in bundle sheath cells from mesophyll cells is :-
A)
Malate
done
clear
B)
Oxaloacetate
done
clear
C)
Aspartate
done
clear
D)
Succinate
done
clear
View Answer play_arrow
A taxonomic category refers to :-
A)
Concrete biological objects in group
done
clear
B)
A rank or level in a taxonomic hierarchy
done
clear
C)
A group of related organism able to interbreed
done
clear
D)
A group of related organism but unable to interbreed freely
done
clear
View Answer play_arrow
Holometabolous type of metamorphosis is found in :-
A)
Dragon fly
done
clear
B)
Silver fish
done
clear
C)
Mosquito
done
clear
D)
Both (a) & (c)
done
clear
View Answer play_arrow
'Adaptation for better use of packed genetic material' this statement is related to gene:-
A)
Jumping gene
done
clear
B)
Overlaping gene
done
clear
C)
Pseudo gene
done
clear
D)
All the above
done
clear
View Answer play_arrow
A.P.C. is :-
A)
Macrophage
done
clear
B)
Langerhans cell
done
clear
C)
B-cell
done
clear
D)
All the above
done
clear
View Answer play_arrow
In which ovule, body of ovule lies at \[90{}^\circ \] on funiculus :-
A)
Anatropous
done
clear
B)
Amphitropous
done
clear
C)
Campylotropous
done
clear
D)
Hemitropous
done
clear
View Answer play_arrow
In a population if certain individuals are better adapted then the possible explanation is :-
A)
Genetic drift
done
clear
B)
Natural selection
done
clear
C)
Gene flow
done
clear
D)
Mutation
done
clear
View Answer play_arrow
Maximum energy is produced by oxidation of
A)
Lipid
done
clear
B)
Protein
done
clear
C)
Carbohydrates
done
clear
D)
None
done
clear
View Answer play_arrow
In ecosystem services includes :-
(a) Provide wild life habitat (b) Maintain biodiversity (c) Generate fertile soil (d) Pollinate crops (e) Provide storage site for carbon
A)
Only a, c & e
done
clear
B)
Only a & c
done
clear
C)
Only b, d & e
done
clear
D)
a, b, c, d & e
done
clear
View Answer play_arrow
Which element is found in chlorophyll :-
A)
\[Fe\]
done
clear
B)
\[Mg\]
done
clear
C)
\[K\]
done
clear
D)
\[Mn\]
done
clear
View Answer play_arrow
Two organism of same division but different order will be kept under the same :-
A)
Class
done
clear
B)
Sub order
done
clear
C)
Genus
done
clear
D)
Species
done
clear
View Answer play_arrow
Which one of the following is not a digenetic creature:
A)
Plasmodium ovale
done
clear
B)
Taenia solium
done
clear
C)
Entamoeba histolytica
done
clear
D)
Trypanosoma gambience
done
clear
View Answer play_arrow
DNA test can not be prepared from :-
A)
Sperm
done
clear
B)
W.B.C.
done
clear
C)
R.B.C.
done
clear
D)
Inner lining of cheek
done
clear
View Answer play_arrow
Which type of memory cell is absent in human:-
A)
T-helper memory cell
done
clear
B)
T-killer memory cell or \[{{T}_{M}}\] cell
done
clear
C)
B-memory cell
done
clear
D)
None of above
done
clear
View Answer play_arrow
Most common type of pollen grains in dicotyledons are :-
A)
Monocolpate
done
clear
B)
Monoporate
done
clear
C)
Tricolpate
done
clear
D)
Triporate
done
clear
View Answer play_arrow
Lederberg's replica plating experiment explains
A)
Lamarck's theory
done
clear
B)
Darwin's theory
done
clear
C)
Mutation theory
done
clear
D)
None of these
done
clear
View Answer play_arrow
The breeding place of Flamings (Hansawar) in India is most likely :-
A)
Sambhar lake
done
clear
B)
Chilka lake
done
clear
C)
Rann of Kutch
done
clear
D)
Ghana vihar
done
clear
View Answer play_arrow
Organism occupy a specific place in food chain based on the source of their nutrition or food or their feeding relationship with other organism, is called :-
A)
Ecological pyramid
done
clear
B)
Ecology niche
done
clear
C)
Trophic level
done
clear
D)
Habitat
done
clear
View Answer play_arrow
Krebs-cycle takes place in :-
A)
Inner membrane of mitochondria
done
clear
B)
Outer membrane of mitochondria
done
clear
C)
Matrix of mitochondria
done
clear
D)
Outside of mitochondria
done
clear
View Answer play_arrow
Smallest unit of microscopic level is :-
A)
Subatomic particles
done
clear
B)
Atom
done
clear
C)
Cell
done
clear
D)
Molecule
done
clear
View Answer play_arrow
Phlebotomus is a vector for :-
A)
Trypanosoma gambience
done
clear
B)
Giardia intestinalis
done
clear
C)
Leishmania donovani
done
clear
D)
Trichomonas
done
clear
View Answer play_arrow
Monoclonal antibodies are produced by hybrid cell called hybridoma. The cell employed to obtain these hybrid cells are :-
A)
B-cells and Myeloma cell
done
clear
B)
T-cell and Myeloma cell
done
clear
C)
B-Lymphocyte and Carcinoma cell
done
clear
D)
Lymphoma and Bone marrow cell
done
clear
View Answer play_arrow
Ab which are present on the surface of B-lymphocyte :-
A)
IgG, IgM
done
clear
B)
IgD, IgM
done
clear
C)
IgA, IgD
done
clear
D)
IsD
done
clear
View Answer play_arrow
In submerged hydrophytes/vallisnej la the functional stomata are found :-
A)
On the upper leaf surface
done
clear
B)
On the lower leaf surface
done
clear
C)
Both leaf surface
done
clear
D)
No where on the plant
done
clear
View Answer play_arrow
In plants recapitulation is shown by :-
A)
O.L amarckiana
done
clear
B)
Pisum sativum
done
clear
C)
Acacia
done
clear
D)
None
done
clear
View Answer play_arrow
Knock-knee disease is due to :-
A)
Flouride
done
clear
B)
Mercury
done
clear
C)
Lead
done
clear
D)
Chlorine
done
clear
View Answer play_arrow
True Coelome is between :-
A)
Ectoderm & endoderm
done
clear
B)
Primary and secondary mesoderm
done
clear
C)
Two layers of primary mesoderm
done
clear
D)
Two layers of secondary mesoderm
done
clear
View Answer play_arrow
Which of the following plant physiological process leads to increase in rate of respiration.
A)
Pholem loading at source
done
clear
B)
Mineral absorption by roots
done
clear
C)
Opening at stomata
done
clear
D)
All the above
done
clear
View Answer play_arrow
Which of the following description does not apply to Phaeophyta :-
A)
Accessory photosynthetic pigment is fucoxanthin
done
clear
B)
Nearly all are fresh water
done
clear
C)
Stores carbohydrates as mannitol
done
clear
D)
Body is filamentous or thalloid
done
clear
View Answer play_arrow
Oviparous mammals are :-
A)
Prototherians
done
clear
B)
Metatherians
done
clear
C)
Eutherians
done
clear
D)
All of the above
done
clear
View Answer play_arrow
Who among the following established the scientific basis of vaccination :-
A)
Von Behring
done
clear
B)
Louis Pasture
done
clear
C)
Edward Jenner
done
clear
D)
George Kohler
done
clear
View Answer play_arrow
Pannus are related to :-
A)
Pernicious anemia
done
clear
B)
Rheumatoid disease
done
clear
C)
I.P.D.M.
done
clear
D)
S.C.I.D.
done
clear
View Answer play_arrow
A monocot showing secondary growth is :-
A)
Pinus
done
clear
B)
Sugarcane
done
clear
C)
Maize
done
clear
D)
Yucca
done
clear
View Answer play_arrow
Amino acid sequence in protein synthesis is decided by:-
A)
r - RNA
done
clear
B)
t - RNA
done
clear
C)
m - RNA
done
clear
D)
Sn - RNA
done
clear
View Answer play_arrow
Terai forest is:-
A)
Tropical
done
clear
B)
Coniferous
done
clear
C)
Deciduous
done
clear
D)
Temperate deciduous
done
clear
View Answer play_arrow
Cords of billroth are blood spaces which are found in which of the followings :-
A)
Liver
done
clear
B)
Kidneys
done
clear
C)
Spleen
done
clear
D)
Tonsils
done
clear
View Answer play_arrow
A famous experiment was performed by F. W. went which leads to the isolation of Auxin. It was performed on an algal product obtained from
A)
Chondrus
done
clear
B)
Gelidium
done
clear
C)
Laminaria
done
clear
D)
Batrachospermum
done
clear
View Answer play_arrow
Heterocyst is :-
A)
A weakest link in trichome
done
clear
B)
A strongest link in trichome
done
clear
C)
A strong link in some trichome
done
clear
D)
No link at all
done
clear
View Answer play_arrow
Absence of head, unsegment body and endoskeleton of calcareous plate is the characters of :-
A)
Mollusca
done
clear
B)
Arthropoda
done
clear
C)
Echinodermata
done
clear
D)
None of the above
done
clear
View Answer play_arrow
The basis of DNA fingerprinting is :-
A)
Availability of cloned DNA
done
clear
B)
Knowledge of human karyotype
done
clear
C)
Phenotypic difference between individuals
done
clear
D)
Occurrence of RFLP (Restriction Fragment Length polymorphism)
done
clear
View Answer play_arrow
Which is strongest opsonin :-
A)
Bacteria
done
clear
B)
IgG
done
clear
C)
IgM
done
clear
D)
Macrophage
done
clear
View Answer play_arrow
Edible part of Banana is :-
A)
Edicarp and Mesocarp
done
clear
B)
Well developed mesocarp and less developed endocarp
done
clear
C)
Less developed mesocarp and well developed endocarp
done
clear
D)
Edicarp and Endocarp
done
clear
View Answer play_arrow
Initiation codon of prokaryotes in protein synthesis represents which amino acid :-
A)
Methionine
done
clear
B)
Formylated methionine
done
clear
C)
Arginine
done
clear
D)
Lysine
done
clear
View Answer play_arrow
Animals have shorter and smaller body extremities in colder area, it is :-
A)
Aliens law
done
clear
B)
Copes law
done
clear
C)
Dollers law
done
clear
D)
Bergmans law
done
clear
View Answer play_arrow
Birds specially chicken grown for meat only known as :-
A)
Hybrid
done
clear
B)
Broiler
done
clear
C)
Bird mangement
done
clear
D)
Bird culture
done
clear
View Answer play_arrow
The stimuli of light induce v arious photomorp-hogenetic changes in planis. The photoreceptors responsible for perception of this stimuli is :-
A)
Phytochromes
done
clear
B)
UV-A receptors
done
clear
C)
UV-B receptors
done
clear
D)
All the above
done
clear
View Answer play_arrow
One of the following feature is shared by algae and fungi
A)
Autotrophic nutrition
done
clear
B)
Parenchymatous thallus
done
clear
C)
Reserve food matter in form of polysaccharides
done
clear
D)
Embryo present in life cycle
done
clear
View Answer play_arrow
Blood platelets are :-
A)
Denucleated
done
clear
B)
Nucleated
done
clear
C)
Bilobled nucleus structure
done
clear
D)
Multilobed nucleus structure
done
clear
View Answer play_arrow
A palaeontologist has recovered a bit of organic material from the 400-year old preserved skin of an extinct dodo. She would like to compare DNA from a sample with DNA from living birds. Which of the following would be most useful for increasing the amount of DNA available for testing?
A)
Electrophoresis
done
clear
B)
Ti plasmid technology
done
clear
C)
Polymerase chain reaction
done
clear
D)
Restriction fragment analysis
done
clear
View Answer play_arrow
Granules of NK cell are :-
A)
Perforin
done
clear
B)
Protease
done
clear
C)
Granulozyme
done
clear
D)
All the above
done
clear
View Answer play_arrow
Eustele is characteristic of :-
A)
Monocots
done
clear
B)
Dicots
done
clear
C)
Pteridophytes
done
clear
D)
Bryophytes
done
clear
View Answer play_arrow
During transcription, the DNA site at which RNA polymerase is bind, is called :-
A)
Promoter site
done
clear
B)
Regulator site
done
clear
C)
Terminator site
done
clear
D)
None
done
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Montreal protocol was effective in :-
A)
1987
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B)
1992
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C)
1989
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D)
1986
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In distal convoluted tubule of the nephrons :-
A)
Na reabsorption requires energy
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B)
Secretion of K ions does not require energy
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C)
Water reabsorption requires energy
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D)
Ammonia is secreted
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Potassium ions plays significant role in the turgidity of guards cells, was first suggested by
A)
Levitt
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B)
Steward
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C)
Fujino
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D)
Sayre
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Bacteria which directly convert atmospheric nitrogen into nitrogen compound are called:-
A)
Denitrifying bacteria
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B)
Putrifying bacteria
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C)
Nitrogen fixing bacteria
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D)
Nitrifying bacteria
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In fishes the teeth are of :-
A)
Acrodont type
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B)
Thecodont type
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C)
Heterodont type
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D)
Pleurodont type
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Match the following and choose the correct combination from the options given :
Column-I Column-II (A) E. coli (i) tumour gene (B) Agrobacteriam (ii) Digestive hydrocarbons of crude oil (C) Bacillus (iii) Human insulin production thuringiensis (D)Pseudomonas (iv) Biocontrol of fungal disease putida (v) Bio insecticide
A)
\[A-iii,\text{ }B-i,\text{ }C-v,\text{ }D-iv\]
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B)
\[A-i,\text{ }B-ii,\text{ }C-iii,\text{ }D-iv\]
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C)
\[A-iv,\text{ }B-iii,\text{ }C-i,\text{ }D-ii\]
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D)
\[A-iii,\text{ }B-i,\text{ }C-v,\text{ }D-ii\]
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Gene therapy is related to :-
A)
Opsonisation
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B)
MAB
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C)
Second generation vaccine
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D)
Third generation vaccine
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Sickel-cell-anaemia helps in prevention of which disease :-
A)
Haemophilia
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B)
Malaria
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C)
Anaemia
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D)
Thalasaemia
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In split gene, the coding sequence is called :-
A)
Cistron
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B)
Operon
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C)
Exon
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D)
Intron
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Contribution of methane in total global warming is :-
A)
10%
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B)
80%
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C)
50%
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D)
20%
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Which one of the following, is present in the integument of frog, but not in mammals :-
A)
Dermis
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B)
Malpighian layer
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C)
Mucous glands
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D)
Sebaceous glands
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Which of the following essential element of plants do not requires as cof actor of enzymes.
A)
Potassium
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B)
Zinc
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C)
Boron
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D)
Mangnese
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Green ear disease of Bajra is caused by :-
A)
Phytophthora infestans
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B)
Pilobolus
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C)
Sclerospora graminicola
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D)
Cystopus candidus
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Under unhy genie condition a child has taken some food on which flies were sitting. What is the most probable inflection the child is likely to get :-
A)
Plasmodium
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B)
Leishmania
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C)
Ascaris
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D)
Trypanosoma
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Which drug you will prescribe a person suffering from pyrexia :-
A)
Aspirin
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B)
Cetrizine
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C)
Alprazolam
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D)
Paracetamol
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V-oncogene is present in :-
A)
H.B.V.
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B)
H.I.V.
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C)
R.S.V.
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D)
All the above
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Modern synthetic theory of evolution involves
A)
Natural selection
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B)
Genetic variations
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C)
Isolation
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D)
All the above
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What is the number of carbon in the deoxyribose sugar is :-
A)
2
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B)
3
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C)
4
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D)
5
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Use of incinerators is crucial to disposal of :-
A)
Nuclear waste
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B)
Waste which is produced by thermal power plant
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C)
Hospital waste
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D)
Agricultural waste
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"Sertoli cells" in human testis are found in :-
A)
Seminiferous tubules
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B)
Leydig cells
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C)
Outside the seminiferous tubules
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D)
None of these
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Which of following is excitatory neurotransmitter
A)
GABA
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B)
Glycine
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C)
Glutamic acid
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D)
Dopamine
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Haudoti region of Rajasthan is most suitable for the soyabean croping as :-
A)
Farmers are hardworking and advance
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B)
High rain fall in comparision to rest of Rajasthan
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C)
Soil is rich in Rhizobium
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D)
Easy availability of Nitrogenous fertilizers due to Chambel Fertilizers Factory in Anta
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Choose the incorrect match of the following:-
A)
Abies balsemia - Canada balsum
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B)
Cedrus - Cedar wood oil
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C)
Pinus roxburghii - Chirpine
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D)
Ginkgo biloba - Maiden hair tree
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Sex of 3A + XXY genotype Drosophila is :-
A)
Male
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B)
Female
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C)
Intersex
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D)
Meta male
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Pyrogens are :-
A)
Bacterial toxin
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B)
Interleukin
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C)
Prostaglandin
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D)
All the above
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The condition of maturation of anther and stigma of same flower simultaneously is called:-
A)
Geitonogamy
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B)
Xenogamy
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C)
Allogamy
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D)
Homogamy
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Neodarwinism is :-
A)
Lamarckism and Darwinism
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B)
Lamarckism and mutation
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C)
Lamarckism natural selection and mutation only
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D)
Darwinism, natural selection and mutation
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The intervening sequence of gene are known as
A)
Intron
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B)
Exon
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C)
Codon
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D)
Cistron
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The lake with large masses of floating plant is called as :-
A)
Bog
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B)
Marsh
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C)
Swamp
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D)
Oligotrophic lake
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During respiration \[C{{O}_{2}}\] is transported in the form of :-
A)
Dissolved plasma
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B)
Sodium carbonate
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C)
\[KHC{{O}_{3}}\]
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D)
Partly dissolved in plasma and partly in the form of sodium and potassium bicarbonate.
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