The relation between amplification factor \[(\mu ),\] plate resistance \[({{r}_{p}})\] and mutul conductance (gm) of a triode value will be:
A)
\[\mu ={{r}_{p}}\times gm\]
done
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B)
\[{{r}_{p}}=\mu \times gm\]
done
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C)
\[gm=\mu \times {{r}_{p}}\]
done
clear
D)
none of these.
done
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View Answer play_arrow
A light of wavelength \[5000\overset{\text{o}}{\mathop{\text{A}}}\,\] falls on a sensitive plate with photoelectric work function\[1.90eV\]. kinetic energy of the emitted photoelectrons is: (given,\[h=6.62\times {{10}^{-34}}J.S.\])
A)
\[0.1\,eV\]
done
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B)
\[2.5\,eV\]
done
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C)
\[0.58\,eV\]
done
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D)
\[1.581\,eV\]
done
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An electron with kinetic energy 5eV is incident on a H-atom in its ground state. The collision:
A)
must be elastic
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B)
may be partially elastic
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C)
may be completely inelastic
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D)
may be completely elastic
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The emission of electron is possible by:
A)
photoelectric effect
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B)
thermionic effect
done
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C)
both a and b
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D)
none of the above
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An electron and a proton are processing same amount of kinetic energies. The de-Broglie wavelength is greater for:
A)
electron
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B)
neutron
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C)
both a and b
done
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D)
none of these
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In a sample of radioactive material, what percentage of the initial number of active nuclei will decay during mean life:
A)
37%
done
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B)
87%
done
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C)
63%
done
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D)
69.3%
done
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For the stability of any nucleus:
A)
binding energy per nucleon will be more
done
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B)
binding energy per nucleon will be less
done
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C)
number of electron will be more
done
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D)
none of the above
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When the half life of any sample of radioactive substance is 4 days, then the fraction of sample will remain undecayed after 2 days, will be:
A)
\[\sqrt{2}\]
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B)
\[\frac{1}{\sqrt{2}}\]
done
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C)
\[\frac{\sqrt{2}-1}{\sqrt{2}}\]
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D)
\[\frac{1}{2}\]
done
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On applying reverse bias to a junction diode, it:
A)
lower the potential barrier
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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
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View Answer play_arrow
An n-type semiconductor is:
A)
negatively charged
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B)
positively charged
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C)
neutral
done
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D)
none of the above
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View Answer play_arrow
A galvanometer has resistance of \[400\Omega \]. and deflects full scale, for current of \[0.2\text{ }mA\]through it, the shunt resistance required to convert it into 3A ammeter is:
A)
\[0.027\Omega \]
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B)
\[0.054\Omega \]
done
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C)
\[0.0135\Omega \]
done
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D)
none of these
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The power factor of a series L-C-R circuit where at resonance is:
A)
zero
done
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B)
0.5
done
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C)
1.0
done
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D)
depends on values of L,C and R
done
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For high frequency, capacitor gives
A)
more resistance
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B)
less resistance
done
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C)
zero resistance
done
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D)
none of these
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In an oscillating L-C circuit, the maximum charge on the capacitor is Q. The charge on the capacitor, when the energy is stored equally between the electric and magnetic field is:
A)
\[\frac{Q}{2}\]
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B)
\[\frac{Q}{\sqrt{2}}\]
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C)
\[\frac{Q}{\sqrt{3}}\]
done
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D)
\[\frac{Q}{3}\]
done
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If \[{{V}_{g}},\,{{V}_{s}}\] and \[\,{{V}_{m}}\] are the speeds of gamma rays, X-rays and microwaves respectively in vacuum then:
A)
\[{{V}_{g}}>{{V}_{m}}>{{V}_{s}}\]
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B)
\[{{V}_{g}}>{{V}_{s}}>{{V}_{m}}\]
done
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C)
\[{{V}_{g}}={{V}_{s}}={{V}_{m}}\]
done
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D)
none of these
done
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A person standing in front of mirror finds his image larger than himself. This implies that the mirror is:
A)
convex
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B)
parabolic
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C)
plane
done
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D)
concave
done
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For a telescope, larger the diameter of the objectives lens:
A)
greater is the resolving power
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B)
smaller is the resolving power
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C)
greater is the magnifying power
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D)
smaller is the magnifying power
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View Answer play_arrow
If the critical angle for total internal reflection from medium to vacuum is \[{{30}^{o}},\]the velocity of light in medium will be:
A)
\[1.0\times {{10}^{8}}m/s\]
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B)
\[1.5\times {{10}^{8}}m/s\]
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C)
\[6\times {{10}^{8}}m/s\]
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D)
\[\sqrt{3}\times {{10}^{8}}m/s\]
done
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The deviation is maximum for which colour:
A)
violet
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B)
red
done
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C)
blue
done
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D)
green
done
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The single slite diffraction potential pattern:
A)
central fringe has negligible width then others
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B)
all fringes are of same width
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C)
central fringes do not exists
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D)
none of the above
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View Answer play_arrow
The capacity of an isolated conducting spheres of radius R is proportional to:
A)
\[{{R}^{2}}\]
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B)
\[\frac{1}{{{R}^{2}}}\]
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C)
\[\frac{1}{{{R}^{4}}}\]
done
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D)
R
done
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Two spheres of radii \[{{R}_{1}}\] and \[{{R}_{2}}\] respectively are charged and joined by a wire. The ratio of electric field of spheres is:
A)
\[\frac{R_{2}^{2}}{R_{2}^{1}}\]
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B)
\[\frac{R_{1}^{2}}{R_{2}^{2}}\]
done
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C)
\[\frac{{{R}_{2}}}{{{R}_{1}}}\]
done
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D)
\[\frac{{{R}_{1}}}{{{R}_{2}}}\]
done
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When a positive charge is shifted from a low potential region to a high potential energy:
A)
decreases
done
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B)
increases
done
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C)
remains the same
done
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D)
may increase or decrease
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The equivalent resistance between A and B will be:
A)
\[10\,\Omega \]
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B)
\[60\,\Omega \]
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C)
\[5\,\Omega \]
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D)
\[40\,\Omega \]
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An electrical cable of copper has just one wire of radius 9mm. Its resistance is 50. The single wire of the cable is replaced by 6 different well insulated copper wires each of radius 3mm. The total resistance of the cable will now be equal to:
A)
\[270\,\Omega \]
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B)
\[9.0\,\Omega \]
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C)
\[45\,\Omega \]
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D)
\[7.5\,\Omega \]
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A current of 2A flowing through a conductor produces 80 J heat in 10s. The resistance of the conductor will be:
A)
10
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B)
20
done
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C)
80
done
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D)
200
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A thermo electric refrigerator works on the basis of:
A)
Joule effect
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B)
Seebeck effect
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C)
Peltier effect
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D)
Thermionic
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A small circular flexible loop of wire of radius r carries a current I. It is placed in a uniform magnetic field B. The tension in the loop will be doubled when:
A)
I is doubled
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B)
B is halved
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C)
r is doubled
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D)
both B and I are doubled
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Two parallel wires carrying currents in the same direction attract each other due to.
A)
potential difference between them.
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B)
mutual inductance between them.
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C)
electric force between them.
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D)
magnetic force between them.
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A hydrogen atom is paramagnetic. A hydrogen molecule is:
A)
diamagnetic
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B)
paramagnetic
done
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C)
ferromagnetic
done
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D)
none of these
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View Answer play_arrow
In isochoric process:
A)
\[\Delta W=0\]
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B)
\[\Delta W=0\]
done
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C)
\[\Delta Q=0\]
done
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D)
\[\Delta T=0\]
done
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View Answer play_arrow
When the temperature difference on the two sides of a wall increases from \[{{100}^{o}}C\]to \[{{200}^{o}}C,\] its thermal conductivity:
A)
remains unchanged
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B)
will be doubled
done
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C)
will be halved
done
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D)
become four times
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Suppose there be four articles having colours blue, red, black and white, when they are heated together and allowed to cool, which article will cool at the earliest?
A)
Blue
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B)
Red
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C)
Black
done
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D)
White
done
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An ideal gas is taken through the cycle \[A\to B\to C\to A\] as shown in figure. If the net heat supplied to the gas in the cycle is 5J, the work done by the gas in the process \[C\to A\] is:
A)
\[-5\,J\]
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B)
\[-20\,J\]
done
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C)
\[-15\,J\]
done
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D)
\[-25\,J\]
done
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View Answer play_arrow
A piece of red glass when heated in dark to red hot state will appear to be:
A)
white
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B)
red
done
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C)
green
done
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D)
yellow
done
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The period of oscillation of a simple pendulum of constant lengh ofsurace of the earth is T. Its time period inside a mine:
A)
cannot equal compared
done
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B)
is equal to T
done
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C)
is less than T
done
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D)
is more than T
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View Answer play_arrow
A particle executing simple harmonic motion has a time period of 48. After how much interval of time from \[t=0\] will its displacement be half of its amplitude?
A)
\[\frac{1}{3}S\]
done
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B)
\[\frac{1}{4}S\]
done
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C)
\[\frac{2}{3}S\]
done
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D)
\[\frac{1}{6}S\]
done
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A train approaches a stationary observer, the velocity of train being 1/20 of the velocity of sound. A sharp blast is blowen with the whistle of the engine at equal intervals of a second. The interval between the successive blasts as. heard by the observer:
A)
\[\frac{1}{20}S\]
done
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B)
\[1/20\,min\]
done
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C)
\[19/20\text{ }S\]
done
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D)
\[19/20\,min\]
done
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View Answer play_arrow
Which of the following equations represents a wave travelling along y-axis?
A)
\[y=A\,\sin \,(Kx-\omega t)\]
done
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B)
\[x=A\,\sin \,(Ky-\omega t)\]
done
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C)
\[y=A\,\sin \,Ky\,\cos \,\omega t\]
done
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D)
\[y=A\,\cos \,Ky\,sin\,\omega t\]
done
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View Answer play_arrow
The difference between soft and hard x-rays is due
A)
velocity
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B)
intensity
done
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C)
frequency
done
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D)
polarization
done
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A solid sphere is rotating about a diameter at an angular velocity co. If it cools so that its radius reduces to \[\frac{1}{n}\]of its original value, its angular velocity becomes:
A)
\[\frac{\omega }{2n}\]
done
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B)
\[\frac{\omega }{{{n}^{2}}}\]
done
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C)
\[n\omega \]
done
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D)
\[{{n}^{2}}\omega \]
done
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View Answer play_arrow
Two satellite A and B around a planet P in circular orbits having radius 4R and R respectively. If the speed of satellite A is 3V, then the speed of satellite B is:
A)
6V
done
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B)
12V
done
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C)
8V
done
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D)
none of these
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If a drop splits up into a number of drops, then:
A)
area increases
done
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B)
volume increases
done
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C)
energy is absorbed
done
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D)
energy is liberated
done
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View Answer play_arrow
A 5m aluminum wire \[(y=7\times {{10}^{10}}N/{{m}^{2}})\]of diameter 3mm supports a 40kg mass. In order to have the same elongation in a copper wire \[(y=12\times {{10}^{10}}N/{{m}^{2}})\] of the same length under the same wieght, the diameter should be in mm:
A)
\[1.75\]
done
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B)
\[4.0\]
done
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C)
\[2.3\]
done
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D)
\[5.0\]
done
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View Answer play_arrow
At which of the following temperature, the value of surface tension of water is minimum?
A)
\[{{4}^{o}}C\]
done
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B)
\[{{35}^{o}}C\]
done
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C)
\[{{60}^{o}}C\]
done
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D)
\[{{75}^{o}}C\]
done
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View Answer play_arrow
In Kjeldahl's method of estimation of nitrogen copper salt acts a
A)
Oxidising agent
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B)
reducing agent
done
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C)
Catalytic agent
done
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D)
hydrolysis agent
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View Answer play_arrow
The IUPAC name of \[Cl-C{{H}_{2}}-CH=\overset{C{{H}_{2}}C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,-C{{H}_{2}}-OH\] is
A)
1-chloro-2-ethyl-4-hydroxybut 2-ene
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B)
4-hydroxy-1-chloro-2-ethyl but 2-ene
done
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C)
4-chloro-2-ethylbut2-en-1-ol
done
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D)
2-ethyl-4-chloro but 2-en-1-ol
done
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View Answer play_arrow
Consider the following representation
They are
A)
enatiomers
done
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B)
diastereomers
done
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C)
conformational isomers
done
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D)
none of these
done
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View Answer play_arrow
Which of the following species does not exert a resonance effect?
A)
\[{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]
done
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B)
\[{{C}_{6}}{{H}_{5}}\overset{+}{\mathop{N}}\,{{H}_{3}}\]
done
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C)
\[{{C}_{6}}{{H}_{5}}OH\]
done
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D)
\[{{C}_{6}}{{H}_{5}}Cl\]
done
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View Answer play_arrow
Which of the following would react most readily with nucleophiles?
A)
done
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B)
done
clear
C)
done
clear
D)
done
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View Answer play_arrow
In the following reaction, product is
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
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End product of the following reaction is
A)
done
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B)
done
clear
C)
done
clear
D)
done
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View Answer play_arrow
Alkyl halides are less soluble in water because
A)
they ionise in water
done
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B)
they are highly viscous
done
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C)
they have very strong C-X bond
done
clear
D)
they don't form H-bonds with water
done
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View Answer play_arrow
Ethyl alcohol is used as a preservative for chloro form because it
A)
prevents aerial oxidation of chloroform
done
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B)
prevents decomposition of chloroform
done
clear
C)
decomposes phosgene to CO and \[C{{l}_{2}}\]
done
clear
D)
removes phosgene by converting it to ethyl carbonate
done
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View Answer play_arrow
The order of deyhydration of following alcohols will be
A)
\[I<II<III<IV\]
done
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B)
\[I>II>III>IV\]
done
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C)
\[III<II<I<IV\]
done
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D)
\[II<III<IV<I\]
done
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View Answer play_arrow
Clemmensen's reduction of ketones is carried out in
A)
\[LiAl{{H}_{4}}\] in \[{{H}_{2}}O\]
done
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B)
glycol and \[KOH\]
done
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C)
\[Zn-Hg\]and \[HCl\]
done
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D)
\[{{H}_{2}}\] and Pd catalyst
done
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View Answer play_arrow
4-nitrotoluene \[\xrightarrow[{{H}_{2}}S{{O}_{4}}]{{{K}_{2}}C{{r}_{2}}{{O}_{7}}}\]product. The product in the reaction is
A)
benzoicacid
done
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B)
4-nitrobenzene
done
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C)
2-nitrobenzoic acid
done
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D)
4-nitrobenzoic acid
done
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View Answer play_arrow
Product T' in the above reaction is
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
Fluorescein is an example of
A)
azo dyes
done
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B)
phtaleindyes
done
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C)
triphenyl methane dyes
done
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D)
nitro dyes
done
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View Answer play_arrow
Which of the following sets contain only addition homopolymers?
A)
Buna-5, PAN, Dacron
done
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B)
Nylon-6, Polystyrene, Glyptal
done
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C)
Melmac, Bakelite, Polythene
done
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D)
PMMA, PTFE, Neoprene
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View Answer play_arrow
Plywood sheets are stuck together by unpolymerised
A)
Nylon
done
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B)
Carbon black
done
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C)
Urea-formaldehyde resin
done
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D)
Styrene and butadiene
done
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View Answer play_arrow
Which of the following is least ionic?
A)
\[AgCl\]
done
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B)
\[KCl\]
done
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C)
\[BaC{{l}_{2}}\]
done
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D)
\[CoC{{l}_{2}}\]
done
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View Answer play_arrow
Among the following the compound that is both paramagnetic and coloured is
A)
\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
done
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B)
\[{{(N{{H}_{4}})}_{2}}[TiC{{l}_{6}}]\]
done
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C)
\[VOS{{O}_{4}}\]
done
clear
D)
\[{{K}_{3}}[Cu{{(CN)}_{4}}]\]
done
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View Answer play_arrow
1 g of \[N{{H}_{4}}N{{O}_{3}}\] is decomposed in a bomb calorimeter. The temperature of the calorimeter increases by 6.12 K. The heat capacity of the system is\[1.23\text{ }KJ/g/deg\]. What is the molar heat of decomposition for\[N{{H}_{4}}N{{O}_{3}}\]?
A)
\[-7.53\text{ }KJ/mol\]
done
clear
B)
\[-398.1\text{ }KJ/mol\]
done
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C)
\[-16.1\text{ }KJ/mol\]
done
clear
D)
\[-602\text{ }KJ/mol\]
done
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View Answer play_arrow
1 mole of cone. \[HCl\] requires x moles of dil \[NaOH\]for neutralisation and 1 mole of cone. \[{{H}_{2}}S{{O}_{4}}\] requires y moles of small dil \[HCl\]. Then which of the following equation is true?
A)
\[y=\frac{1}{2}x\]
done
clear
B)
\[x=\frac{1}{2}y\]
done
clear
C)
\[x=2y\]
done
clear
D)
None of these
done
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View Answer play_arrow
The volume of \[{{O}_{2}}\] at NTP liberated by 5 amperes following for 193 seconds is through acidulated water will be
A)
\[56\,c{{m}^{3}}\]
done
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B)
\[112\,c{{m}^{3}}\]
done
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C)
\[224\,c{{m}^{3}}\]
done
clear
D)
\[448\text{ }c{{m}^{3}}\]
done
clear
View Answer play_arrow
Oxidation potential for the following half-cell reactions are:
\[ZnZ{{n}^{2+}}_{(aq)}+2{{e}^{-}}\] \[{{E}^{o}}=+0.76\,V\] \[FeF{{e}^{2+}}_{(aq)}+2{{e}^{-}}\] \[{{E}^{o}}=+0.44\,V\] The emf for the cell reaction \[F{{e}^{2+}}+ZnZ{{n}^{2+}}+Fe\]will be
A)
\[-1.20\,V\]
done
clear
B)
\[0.32\,V\]
done
clear
C)
\[-0.32\,V\]
done
clear
D)
\[-1.2\,V\]
done
clear
View Answer play_arrow
The reason of Brownian movement is
A)
small size of particles
done
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B)
small size of molecules of dispersion medium
done
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C)
exchange of kinetic and potential energy
done
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D)
collision between molecules of dispersion medium and dispersed phase
done
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View Answer play_arrow
Concentration of \[N{{H}_{4}}Cl\] and \[N{{H}_{4}}OH\] in a buffer solution are in the ratio of \[1:10,\] \[{{K}_{b}}\]for \[N{{H}_{4}}OH\] is \[{{10}^{-10}}\]. The pH of the buffer is
A)
4
done
clear
B)
5
done
clear
C)
9
done
clear
D)
11
done
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View Answer play_arrow
de-Broglie wavelength is related to applied voltage as:
A)
\[\lambda =\frac{\sqrt{2meV}}{\sqrt{h}}\]
done
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B)
\[\lambda =\frac{h}{\sqrt{2meV}}\]
done
clear
C)
\[\lambda =\frac{\sqrt{2meV}}{h}\]
done
clear
D)
none of these
done
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View Answer play_arrow
\[400\text{ }ml.\]of standard gold sol is just prevented from coagulation by the addition of \[0.96\text{ }g\]of starch before adding 1 ml. of 10% \[NaCl\]solution the gold number will be:
A)
\[2.4\]
done
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B)
76
done
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C)
240
done
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D)
24
done
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View Answer play_arrow
Among the following sweetener which one has the lowest sweetness vame?
A)
Alitame
done
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B)
Aspartame
done
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C)
Saccharine
done
clear
D)
Sucralose
done
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View Answer play_arrow
Find the magnetic moment of a divalent ion in aqueous solution if its atomic number is 25:
A)
\[3.0\]BM
done
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B)
\[4.9\]BM
done
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C)
\[8.9\]BM
done
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D)
\[5.9\]BM
done
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View Answer play_arrow
Gun metal is an alloy of
A)
\[Cu+Zn\]
done
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B)
\[Cu+Ag\]
done
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C)
\[Cu+Sn+Zn\]
done
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D)
\[Cu+Zn+Ni\]
done
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View Answer play_arrow
Which of the following is a first order reaction?
A)
\[N{{H}_{4}}N{{O}_{2}}\xrightarrow{{}}{{N}_{2}}+2{{H}_{2}}O\]
done
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B)
\[2HI{{H}_{2}}+{{I}_{2}}\]
done
clear
C)
\[2N{{O}_{2}}\xrightarrow{{}}2NO+{{O}_{2}}\]
done
clear
D)
\[2NO+{{O}_{2}}\xrightarrow{{}}2N{{O}_{2}}\]
done
clear
View Answer play_arrow
Platinum dissolved in aqua-regain to give
A)
\[PtC{{l}_{2}}\]
done
clear
B)
P\[PtC{{l}_{4}}\]
done
clear
C)
\[PtC{{l}_{6}}\]
done
clear
D)
\[{{H}_{2}}PtC{{l}_{6}}\]
done
clear
View Answer play_arrow
\[{{N}_{2}}+{{O}_{2}}2NO\] ......I
\[\frac{1}{2}{{N}_{2}}+\frac{1}{2}{{O}_{2}}NO\] ......II
If \[{{K}_{1}}\] and \[{{K}_{2}}\] are equilibrium constants for reactions I and II respectively then the relation between \[{{K}_{1}}\]and \[{{K}_{2}}\]is:
A)
\[{{K}_{1}}={{K}_{2}}\]
done
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B)
\[{{K}_{2}}=\sqrt{{{K}_{1}}}\]
done
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C)
\[{{K}_{1}}=2{{K}_{2}}\]
done
clear
D)
\[{{K}_{1}}=\frac{1}{2}{{K}_{2}}\]
done
clear
View Answer play_arrow
The geometry of \[Xe{{F}_{4}}\] molecule is
A)
linear
done
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B)
triangular planar
done
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C)
pyramidal
done
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D)
square planar
done
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View Answer play_arrow
Percentage of lead in lead pencil is
A)
0
done
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B)
20
done
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C)
80
done
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D)
70
done
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View Answer play_arrow
In the reaction \[HN{{O}_{3}}+{{P}_{4}}{{O}_{10}}\xrightarrow{{}}4HP{{O}_{3}}+X\] The product X is
A)
\[{{N}_{2}}{{O}_{3}}\]
done
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B)
\[N{{O}_{2}}\]
done
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C)
\[{{N}_{2}}{{O}_{5}}\]
done
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D)
\[{{H}_{2}}O\]
done
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View Answer play_arrow
Calculate the total pressure in a \[10.0\text{ }L\]cylinder which contains 0.4 g hylium, \[1.6\text{ }g\]oxygen and 1.4 g nitrogen at \[27{}^\circ C\]
A)
\[0.492\]atm
done
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B)
\[49.2\]atm
done
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C)
\[4.92\]atm
done
clear
D)
\[0.0492\]atm
done
clear
View Answer play_arrow
Which of the following has square planar geometry?
A)
\[{{[PtC{{l}_{4}}]}^{2-}}\]
done
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B)
\[{{[NiC{{l}_{4}}]}^{2-}}\]
done
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C)
\[{{[ZnC{{l}_{4}}]}^{2-}}\]
done
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D)
\[{{[CoC{{l}_{4}}]}^{2-}}\]
done
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View Answer play_arrow
The most stable complex among the following is
A)
\[{{K}_{3}}[Al{{({{C}_{2}}{{O}_{4}})}_{3}}]\]
done
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B)
\[[Pt\,{{(en)}_{2}}C{{l}_{2}}]\]
done
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C)
\[[Ag{{(N{{H}_{3}})}_{2}}]Cl\]
done
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D)
\[{{K}_{2}}[Ni(EDTA)]\]
done
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View Answer play_arrow
When \[Mn{{O}_{2}}\] is fused with \[KOH,\]a coloured compound is formed. The product and its colour is
A)
\[{{K}_{2}}Mn{{O}_{4}},\]purple green
done
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B)
\[KMn{{O}_{4}},\] purple
done
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C)
\[M{{n}_{2}}{{O}_{3}},\] brown
done
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D)
\[M{{n}_{2}}{{O}_{4}},\] black
done
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View Answer play_arrow
Which of the following halogens does not undergo disproportionation reaction on treatment with alkali?
A)
\[C{{l}_{2}}\]
done
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B)
\[B{{r}_{2}}\]
done
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C)
\[{{F}_{2}}\]
done
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D)
\[{{I}_{2}}\]
done
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View Answer play_arrow
Sea divers go deep in the sea water with a mixture of which of the following gases?
A)
\[{{O}_{2}}\] and \[He\]
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B)
\[{{O}_{2}}\] and \[Ar\]
done
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C)
\[{{O}_{2}}\]and \[C{{O}_{2}}\]
done
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D)
\[C{{O}_{2}}\]and \[Ar\]
done
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View Answer play_arrow
The efficiency of an enzyme in catalysing a reaction is due to its capacity
A)
To form a strong enzyme substrate complex
done
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B)
To decrease the bond energies in the substrate molecule
done
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C)
To change the shape of the substrate molecule
done
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D)
To raise the activation energy of the reaction
done
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View Answer play_arrow
\[S{{O}_{2}}C{{l}_{2}}S{{O}_{2}}+C{{l}_{2}}\] is a first order reaction with \[K=2.2\times {{10}^{-5}}\text{ }se{{c}^{-1}}\] at \[320{}^\circ C\]. The percentage of \[S{{O}_{2}}C{{l}_{2}}\] decompsed on heating for 90 minutes is
A)
\[1.118\]
done
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B)
\[0.1118\]
done
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C)
\[18.11\]
done
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D)
\[11.18\]
done
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View Answer play_arrow
The magnetic character of oxygen molecule is the same as that of
A)
Nitrogen
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B)
Carbon
done
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C)
Peroxide ion
done
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D)
Boron
done
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View Answer play_arrow
The radius ratio of KF is\[0.98\]. The structure of KF is of the type
A)
\[NaCl\]
done
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B)
\[ZnS\]
done
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C)
\[CsCl\]
done
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D)
graphite
done
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View Answer play_arrow
Which one of the following taxon does not belong to the same taxonomic category according to the standard suffixes standardized by ICDN?
A)
Dicotyledonae
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B)
Chlorophyceae
done
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C)
Pteridophyta
done
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D)
Bryopsida
done
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View Answer play_arrow
Mark the incorrect match
A)
Gregarious pest - locust
done
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B)
Living fossil - Limulus
done
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C)
Pearl oyster - Pinctada
done
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D)
Angel fish - Betia
done
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View Answer play_arrow
. Select incorrect statement with respect to Escherichia coli
A)
is peritrichous Gram positive bacteria
done
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B)
outermost cell wall layer has LPS
done
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C)
both proximal and distal set of rings are present in flagella
done
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D)
muramic acid content in cell wall is low
done
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View Answer play_arrow
Poikilotherms, dicondylic skull, external fertilization indirect development, oviparous and different mode of respiration are characteristic feature of class
A)
Amphibia
done
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B)
Reptillia
done
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C)
Mammalia
done
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D)
Aves
done
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View Answer play_arrow
Find correct match
Column-I Column-II A. Somatogamy 1. Black rust fungi B. Gametangial copulation 2. White rust fungi C. Spermatization 3. Gill fungi D. Gametangial 4. Black mould
A)
A-3 B-4 C-2 D-1
done
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B)
A-3 B-4 C-1 D-2
done
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C)
A-4 B-3 C-1 D-2
done
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D)
A-2 B-3 C-1 D-4
done
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View Answer play_arrow
Hind wings of cockroach are
A)
Opaque, dark and leathery and are used in flight
done
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B)
Opaque, dark and leathery and are not used in flight
done
clear
C)
Transparent, membranous and are used in flight
done
clear
D)
Transparent, membranous and are not used in flight
done
clear
View Answer play_arrow
The cell wall of brown algae is
A)
Two layered with outer cellulosic layer
done
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B)
Two layered with outer mucilaginous layer
done
clear
C)
Unilayered with sulphated phycocolloids
done
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D)
Two layered with hydroxy proline
done
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View Answer play_arrow
Phanerogams without ovary
A)
are archegoniates without antheridia
done
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B)
have heteroxylous wood
done
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C)
are spermatophytes with diplontic life cycle
done
clear
D)
more than one option is correct
done
clear
View Answer play_arrow
Iron transporting protein is
A)
Ferritin
done
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B)
Transferrin
done
clear
C)
Ceruplasmin
done
clear
D)
Monellin
done
clear
View Answer play_arrow
Total number of sub fibrils in centrioles of dividing cell \[a+{{G}_{2}}-\] stage is
A)
27
done
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B)
54
done
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C)
108
done
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D)
9
done
clear
View Answer play_arrow
Increase in concentration of which one of the following factor will decrease the rate of transpiration?
A)
Temperature
done
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B)
Wind velocity
done
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C)
Relative humidity
done
clear
D)
Root; shoot ratio
done
clear
View Answer play_arrow
Sex determining chromosomes in silkworm is
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
What will be the length of right handed DNA with A helical diameter and 1000 bp?
A)
250 nm
done
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B)
340 nm
done
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C)
330 nm
done
clear
D)
380 nm
done
clear
View Answer play_arrow
Which of the following antibiotic inhibits interaction between t RNA and mRNA?
A)
Neomycin
done
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B)
Erythromycin
done
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C)
Streptomycin
done
clear
D)
Tetracycline
done
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View Answer play_arrow
Which option is correct?
A. Nearly 99% of animals are thermo conformers R. Such animals are poikilothermal
A)
A
done
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B)
R
done
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C)
Both A & R
done
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D)
None
done
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View Answer play_arrow
Which option is correct
A. Frequency of crossing over is inversely proportional to linkage
R. Relative distance between two genes is expressed in map unit and equal to cov.
A)
A
done
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B)
R
done
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C)
Both A and R
done
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D)
None
done
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View Answer play_arrow
Which option is correct
A. Population growth is the increase in size of population over a period of time
R. It depends upon natality and immigration only
A)
A
done
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B)
R
done
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C)
Both A and R
done
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D)
None
done
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View Answer play_arrow
Pollen grains of hydrophilous flowers are generally surrounded by
A)
Keratin
done
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B)
Cutin
done
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C)
Mucilage
done
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D)
Fat
done
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View Answer play_arrow
Which one of these influences primary productivity
A)
Energy absorption
done
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B)
Photosynthetic efficiency
done
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C)
Assimilation number
done
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D)
More than one correct
done
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View Answer play_arrow
Genetically similar population showing morphological variation in response to environmental change is called
A)
Ecotype
done
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B)
Ecocline
done
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C)
Ecophene
done
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D)
Ecological equivalents
done
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View Answer play_arrow
Reflex action for vomiting is controlled by
A)
Vomit centre in pans
done
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B)
Vomit centre in medulla
done
clear
C)
Satiety centre in hypothalamus
done
clear
D)
Antivomit centre in Diencephalon
done
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View Answer play_arrow
Sympathetic post ganglionic neuron that terminates on the sweet gland secrete
A)
GABA
done
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B)
Glycine
done
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C)
Adrenaline
done
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D)
Acetyl choline
done
clear
View Answer play_arrow
Mark the stage that appears just closure of semi lunar value during the cardial cycle
A)
joint diastale
done
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B)
diastasis
done
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C)
isovolumetric contraction
done
clear
D)
isovolumetric relaxation
done
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View Answer play_arrow
During the urine formation filtrate move how many times in the width of kidney
A)
4
done
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B)
3
done
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C)
1
done
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D)
2
done
clear
View Answer play_arrow
The principal estrogen secreted by ovaries is
A)
Estriol
done
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B)
Estrone
done
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C)
Pestradiol
done
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D)
17 d hydroxyl progesterone
done
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View Answer play_arrow
If thyroid gland is surgically removed, which of these will not occur
A)
low metabolism
done
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B)
low calcium level in blood plasma
done
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C)
low body temperature
done
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D)
reproductive failure
done
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View Answer play_arrow
Immature lymphocyte differentiate into antigen sensitive lymphocyte inside
A)
Thymus
done
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B)
Bone marrow
done
clear
C)
MALT
done
clear
D)
Both A and B
done
clear
View Answer play_arrow
Crown galls in dicots are due to
A)
E. coli
done
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B)
Agrobacterium
done
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C)
Salmonella
done
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D)
Xanthomonas
done
clear
View Answer play_arrow
Natural genetic engineer bacteria is
A)
E. coli
done
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B)
Yeast
done
clear
C)
Pseudomonas
done
clear
D)
Agrobacterium
done
clear
View Answer play_arrow
Sessile animals generally have__ symmetry
A)
Radial
done
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B)
Lateral
done
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C)
Bilateral
done
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D)
Both A and B
done
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View Answer play_arrow
Gene therapy is related to
A)
AIDS
done
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B)
SCID
done
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C)
ADA
done
clear
D)
All of these
done
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View Answer play_arrow
Chara is a
A)
Green algae
done
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B)
Marine algae
done
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C)
Brown algae
done
clear
D)
Red algae
done
clear
View Answer play_arrow
Spireme stage is related to
A)
Prophase-I
done
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B)
Prophase
done
clear
C)
Anaphase-I
done
clear
D)
Metaphase
done
clear
View Answer play_arrow
Karyotyping is done in
A)
Prophase
done
clear
B)
Metaphase
done
clear
C)
Anaphase
done
clear
D)
None
done
clear
View Answer play_arrow
Unwinding functional in
A)
Prophase-I
done
clear
B)
Metaphase
done
clear
C)
Anaphase
done
clear
D)
Telophase
done
clear
View Answer play_arrow
Prevention of lodging in cereales is by
A)
NAAM
done
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B)
GA
done
clear
C)
ABA
done
clear
D)
Ethylene
done
clear
View Answer play_arrow
Transverse geotropism is due to
A)
Ethylene
done
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B)
Auxin
done
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C)
ABA
done
clear
D)
GA
done
clear
View Answer play_arrow
Floes are found in
A)
STP
done
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B)
Primary treatment
done
clear
C)
Secondary treatment
done
clear
D)
Tertiary treatment
done
clear
View Answer play_arrow
Statins are provided by
A)
Yeast
done
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B)
Fungi
done
clear
C)
Virus
done
clear
D)
Bacteria
done
clear
View Answer play_arrow
In DNA finger printing technique VNTRs are separated by
A)
Hybridization
done
clear
B)
Southern blotting
done
clear
C)
Gel electrophoresis
done
clear
D)
Denaturation
done
clear
View Answer play_arrow
Somatogamy is found in
A)
Black rust fungi
done
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B)
Gill fungi
done
clear
C)
Yeast
done
clear
D)
Trichoderma
done
clear
View Answer play_arrow
White rust fungi reproduces by
A)
Spermatization
done
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B)
Gametengial Contact
done
clear
C)
Somatogamy
done
clear
D)
Pedogamy
done
clear
View Answer play_arrow
Isomerisation takes place when ___ is converted to isocitric acid
A)
\[\alpha \] KGA
done
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B)
Fumaric Acid
done
clear
C)
Succinicacid
done
clear
D)
Citric acid
done
clear
View Answer play_arrow
Tongro virus causes disease in
A)
Wheat
done
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B)
Rice
done
clear
C)
Maize
done
clear
D)
Sugarcane
done
clear
View Answer play_arrow
Cell wall of green algae is ____ layered
A)
Mono
done
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B)
Bi
done
clear
C)
Tri
done
clear
D)
4
done
clear
View Answer play_arrow
The inflorescence having sessile flowers opening centrifugally on a globose axis is found in
A)
Zea
done
clear
B)
Acacia
done
clear
C)
Musa
done
clear
D)
Sunflower
done
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View Answer play_arrow
Winged pollen are found in
A)
Pinus
done
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B)
Cycas
done
clear
C)
Taxus
done
clear
D)
Abies
done
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View Answer play_arrow
Ephedrine is provided by member of
A)
Ferns
done
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B)
Gymnosperm
done
clear
C)
Angiosperm
done
clear
D)
Algae
done
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View Answer play_arrow
Elaters are ___ structure and found in ____.
A)
Haploid, Riccia
done
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B)
Diploid, Marchantia
done
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C)
Haploid, Funaria
done
clear
D)
Diploid, Riccia
done
clear
View Answer play_arrow
Algin and carragennin are provided by
A)
Red algae and brown algae
done
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B)
Brown algae, green algae
done
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C)
Brown algae, Red algae
done
clear
D)
Green algae, Red algae
done
clear
View Answer play_arrow
Find odd one with respect to Bacterial disease
A)
Tundu of wheat
done
clear
B)
Citrus canker
done
clear
C)
Potato wilt
done
clear
D)
Bunchy top of Banana
done
clear
View Answer play_arrow
All given characters are correct with respect to Oomycetes except
A)
Hyphal wall has cellulose
done
clear
B)
Mycelium is septate with central pore
done
clear
C)
Site ofmeisosis is oospore
done
clear
D)
Two laterally inserted flagella with hetero kant condition
done
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View Answer play_arrow
Transduction was discovered by
A)
Lederberg and Tatum
done
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B)
Zinder and Lederberg
done
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C)
Griffith
done
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D)
Lederberg only
done
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View Answer play_arrow
Gaidukov phenomenon is found in
A)
BGA
done
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B)
Protists
done
clear
C)
Animals
done
clear
D)
Fungi
done
clear
View Answer play_arrow
Linnaeus used binomial system of nomenclature with respect to plants for the first time in
A)
Pinax
done
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B)
Systema natural
done
clear
C)
Species plantarum
done
clear
D)
Philosophicabotanique
done
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View Answer play_arrow
The wall of endosteum in bones is lined by
A)
Periosteum
done
clear
B)
Fibroblasts
done
clear
C)
Osteoblasts
done
clear
D)
Osteoclasts
done
clear
View Answer play_arrow
Which of the following is secondary metabolite
A)
Lecithin
done
clear
B)
Vinblastine
done
clear
C)
Glucose
done
clear
D)
Amino acids
done
clear
View Answer play_arrow
If body of frog is partially immersed in water then its mode of respiration will be
A)
Cutaneous
done
clear
B)
Buccopharyngeal
done
clear
C)
Pulmonary
done
clear
D)
All 3 types of respiration but not gill respiration
done
clear
View Answer play_arrow
Ammo acids having cyclic structure with a straight side chain bearing carboxylic and amino groups are
A)
alcoholic amino acid
done
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B)
acidic amino acid
done
clear
C)
heterocyclic amino acid
done
clear
D)
aromatic amino acids
done
clear
View Answer play_arrow
Hormonal feedback of CCK serves to control
A)
Emptying of stomach
done
clear
B)
Digestion of carbohydrate
done
clear
C)
Stimulation of gastric glands
done
clear
D)
Stimulation of intestinal motility
done
clear
View Answer play_arrow
Sympathetic stimulation to heart increases
A)
Cardiac out put
done
clear
B)
Rate of heartbeat
done
clear
C)
Strength of ventricular contraction
done
clear
D)
All of these
done
clear
View Answer play_arrow
Vomiting centre is present in
A)
Paws
done
clear
B)
Cerebrum
done
clear
C)
Midbrain
done
clear
D)
Medulla
done
clear
View Answer play_arrow
T-Wave observed in E.C.G. represents
A)
Excitation of atria
done
clear
B)
Depolarization of ventricles
done
clear
C)
Return of ventricles from excited to normal state
done
clear
D)
Beginning of systole
done
clear
View Answer play_arrow
Urea cycle removes two wastes from blood in the liver, they are
A)
Ammonia and uric acid
done
clear
B)
Ammonia and urea
done
clear
C)
\[C{{O}_{2}}\]and \[N{{H}_{3}}\]
done
clear
D)
Urea, \[C{{O}_{2}}\]
done
clear
View Answer play_arrow
During muscle contraction one amongst the following is not observed
A)
decrease in O-band
done
clear
B)
decrease in I-band
done
clear
C)
decrease in H-Zone
done
clear
D)
decrease in length of sarcomex
done
clear
View Answer play_arrow
Joint characterized by presence of fluid filled cavity between articulating surfaces of two bones is a
A)
Synovial joint
done
clear
B)
Suture joint
done
clear
C)
Fibrous joint
done
clear
D)
Cartilaginous joint
done
clear
View Answer play_arrow
The thickening of choroid layer in anterior 1/3rd part give rise to
A)
Cornea
done
clear
B)
Pupil
done
clear
C)
Ciliary body
done
clear
D)
Suspensory ligaments
done
clear
View Answer play_arrow
One amongst the following is fungal disease of poultry
A)
Rinder pest
done
clear
B)
Flacheric
done
clear
C)
Thrush
done
clear
D)
VHS
done
clear
View Answer play_arrow
Flavr saur variety of tomato was created by
A)
Inducing carotene gene
done
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B)
Increasing Lycopene content
done
clear
C)
Silencing polygalactouranase producing gene
done
clear
D)
Inducing pectin dissolution
done
clear
View Answer play_arrow
Biotechnological product recommended as a treatment against infertility
A)
DAN ase
done
clear
B)
Repro
done
clear
C)
CGTH
done
clear
D)
Calcitonin
done
clear
View Answer play_arrow
ROP gene of PBR 322 codes for
A)
PVUII
done
clear
B)
\[\beta \]- Galactosidase
done
clear
C)
Protein involved in multiplication of plasmid
done
clear
D)
Protein required for antibiotics resistance
done
clear
View Answer play_arrow
Cellular component of immune system includes
A)
PMNL and monocytes
done
clear
B)
N-K cells
done
clear
C)
Macrophages
done
clear
D)
All of these
done
clear
View Answer play_arrow
Barrier method of contraception aims at
A)
Preventing ovulation
done
clear
B)
Making uterus unfit for implantation
done
clear
C)
Covering external genitalia
done
clear
D)
Preventing physical meeting of ovum and sperms
done
clear
View Answer play_arrow
Who were first to built hut the structure for dwelling and burried their dead.
A)
Java Man
done
clear
B)
Homo sapiens
done
clear
C)
Crogmanon Man
done
clear
D)
Neanderthal Man
done
clear
View Answer play_arrow
Which of the following will inhibit the transport of neurotransmitter dopamine
A)
Bhang
done
clear
B)
Cocaine
done
clear
C)
Psilocybin
done
clear
D)
Mescaline
done
clear
View Answer play_arrow
The hypothalamus does not furnish release of inhibition factors for one amongst the following hormones
A)
MSH
done
clear
B)
ACTH
done
clear
C)
STH
done
clear
D)
Prolactin
done
clear
View Answer play_arrow
Find odd one out with respect to green house gases
A)
\[CFC\]
done
clear
B)
\[{{N}_{2}}O\]
done
clear
C)
\[C{{O}_{2}}\]
done
clear
D)
\[S{{O}_{2}}\]
done
clear
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Find odd one out with respect to key industry animal
A)
Frog
done
clear
B)
Deer
done
clear
C)
Rabbit
done
clear
D)
Field mouse
done
clear
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The succession starting in an aquatic habitat will show appearance of__just after floating stage
A)
Sedge stage
done
clear
B)
Reed swamp stage
done
clear
C)
Submerged stage
done
clear
D)
Marsh meadow stage
done
clear
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Select incorrect match
A)
Seals - Blubber of proteins
done
clear
B)
Desert lizard - Behavioral adaptations
done
clear
C)
Kangaroo rat - concentrated wine
done
clear
D)
Antarctic fishes - Physiological adaptation
done
clear
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Select incorrect match
A)
Protina - Lysine rich maize
done
clear
B)
Yuvraj and Blood red - clonal selection
done
clear
C)
Himgiri - Wheat
done
clear
D)
Kalyan sona - Mutation breeding
done
clear
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Seedless watermelon developed by Kihara in Japan is
A)
Autotriploid
done
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B)
Anenploid
done
clear
C)
Auto hexaploid
done
clear
D)
Autotetraploid
done
clear
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Find odd one out with respect to plants propagated vegetatively by means of creeping stems
A)
Pistia
done
clear
B)
Crows
done
clear
C)
Eichornia
done
clear
D)
Vallisneria
done
clear
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doss pollination is favoured by all except
A)
Herkogamy
done
clear
B)
Dichogamy
done
clear
C)
Homogamy
done
clear
D)
Heterostyly
done
clear
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How many types of gametes are expected from an individual having CcDDEeFf genotype when last two characters are linked
A)
2
done
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B)
4
done
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C)
8
done
clear
D)
16
done
clear
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How many total \[NAD{{H}_{2}}\]mediated dehydrogenation occurs in Krebs cycle running for complete oxidation of 2 glucose molecules
A)
4
done
clear
B)
12
done
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C)
8
done
clear
D)
16
done
clear
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A leaf with many principal veins running parallely and converge finally is found in
A)
Luffa
done
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B)
Ricinus
done
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C)
Triticum
done
clear
D)
Hibiscus
done
clear
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The sclerenchymatous bundle cap is present in
A)
Dicot leaf
done
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B)
Monocot stem
done
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C)
Monocot leaf
done
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D)
Dicot stem
done
clear
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All given fruit are simple dry, indehiscent except
A)
Samara
done
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B)
Caryopsis
done
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C)
Cypsela
done
clear
D)
Cremocarp
done
clear
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Triticale is obtained by crossing wheat with
A)
oat
done
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B)
maize
done
clear
C)
barley
done
clear
D)
rye
done
clear
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