A particle A has charge +q and a particle B has charge +4q with each of them having the same mass m, when allowed to fall through from rest through the same electric potential difference, the ratio of their speed \[\frac{{{V}_{A}}}{{{V}_{B}}}\] is:
A)
2: 1
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B)
1: 2
done
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C)
1: 4
done
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D)
4 :1
done
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Three particles, each having a charge of \[10\mu C\] are placed at the corners of an equilateral triangle of side 10 cm. The electrostatic potential energy of the system is:
A)
Zero
done
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B)
27J
done
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C)
100J
done
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D)
\[\infty \]
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A charged particle of mass m and charge q is released from rest in a electric field of constant magnitude E. the KE of the particle after time t is:
A)
\[\frac{E{{q}^{2}}m}{2{{t}^{2}}}\]
done
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B)
\[\frac{2{{E}^{2}}{{t}^{2}}}{qm}\]
done
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C)
\[\frac{{{E}^{2}}{{q}^{2}}{{t}^{2}}}{2m}\]
done
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D)
\[\frac{Eqm}{2t}\]
done
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In the figure, current through the \[3\Omega \] resistor is 0.8A, then potential drop through \[4\Omega \] resistor is:
A)
9.6V
done
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B)
2.6V
done
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C)
4.8V
done
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D)
1.2V
done
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The figure shows currents in a part of electric current. The current I is:
A)
1.7 A
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B)
1.3A
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C)
3.7A
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D)
1 A
done
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In the circuit shown, A and V are ideal ammeter and voltmeter respectively. Reading of the voltmeter will be:
A)
2V
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B)
1V
done
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C)
0.5V
done
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D)
Zero
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Two ions having masses in the ratio 1 : 1 and charges 1: 2 are projected into uniform magnetic field perpendicular to the field with speed in ratio 2 : 3. The ratio of radii of circular paths:
A)
3 : 1
done
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B)
4 : 3
done
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C)
2 : 3
done
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D)
1 : 4
done
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Three long, straight and parallel wires carrying currents are arranged as shown in figure. The force experienced by 10 cm length of wire Q is:
A)
\[1.4\times {{10}^{-\,4}}N\]towards right
done
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B)
\[2.6\times {{10}^{-4}}N\]towards right
done
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C)
\[0.7\times {{10}^{-4}}\text{ }N\]towards left
done
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D)
\[2.8\times {{10}^{-4}}N\]towards right
done
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View Answer play_arrow
Which of the following particles will experience maximum magnetic force when projected with same velocity perpendicular to a magnetic field?
A)
Electron
done
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B)
Proton
done
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C)
\[H{{e}^{+}}\]
done
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D)
\[L{{i}^{+2}}\]
done
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Which of the following is most suitable for the core of electromagnets:
A)
Iron
done
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B)
Steel
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C)
Soft iron
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D)
Cu-Ni alloy
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In a magnetic field of\[5\times {{10}^{-2}}T\], area of a coil changes from \[101\text{ }c{{m}^{2}}\]to \[100\text{ }c{{m}^{2}}\]without changing the resistance which is\[2\Omega \]. The amount of charge that flows during this period is:
A)
\[2.5\times {{10}^{-6}}C\]
done
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B)
\[2\times {{10}^{-6}}C\]
done
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C)
\[{{10}^{-6}}C\]
done
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D)
\[8\times {{10}^{-6}}C\]
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In a transformer, the coefficient of mutual inductance between the primary and the secondary coil is 0.2H. When the current changes by 5A/sec in the primary, the emf induced in secondary will be:
A)
5V
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B)
25V
done
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C)
10V
done
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D)
1V
done
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The RMS value of an ac of 50Hz is 10 A. The time taken by an alternating current in reaching from zero to maximum value and the peak value of current will be:
A)
\[2\times {{10}^{-2}}\]sec and 14.14A
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B)
\[5\times {{10}^{-3}}\]sec and 7.07A
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C)
\[1\times {{10}^{-2}}\]sec and 7.07A
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D)
\[5\times {{10}^{-3}}\]sec and 14.14A
done
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Power factor is 1 for:
A)
Pure capacitor
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B)
Pure inductor
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C)
Pure resistor
done
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D)
none
done
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The wavelength of light in two liquids (x) and (y) is \[3500\overset{o}{\mathop{A}}\,\]and \[7000\overset{o}{\mathop{A}}\,\]respectively, then the critical angle of (x) relative to (y) will be:
A)
\[60{}^\circ ~\]
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B)
\[45{}^\circ ~\]
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C)
\[30{}^\circ \]
done
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D)
\[15{}^\circ \]
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In a thin prism of glass\[(\mu =1.5)\], which of the following relations between the angle of inimum deviation \[{{\delta }_{m}}\] and angle of prism r will be orrect?
A)
\[{{\delta }_{m}}=r\]
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B)
\[{{\delta }_{m}}=1.5r\]
done
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C)
\[{{\delta }_{m}}=2r\]
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D)
\[{{\delta }_{m}}=\frac{r}{2}\]
done
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In a young double slit experiment, an interference pattern is obtained for\[\lambda =6000\overset{o}{\mathop{A}}\,\], coming from two coherent sources \[{{S}_{1}}\] and \[{{S}_{2}}\] at certain point P on the screen third fringe of dark is obtained. The n path difference \[{{S}_{1}}P-{{S}_{2}}P\]in microns is:
A)
1.5
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B)
4.5
done
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C)
0.75
done
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D)
3
done
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X-ray beam can be deflected by:
A)
Magnetic field
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B)
Electric field
done
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C)
Both
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D)
None
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A photon and an electron have equal energy E. \[{{\lambda }_{photon}}\,/{{\lambda }_{electroni}}\]is proportional to:
A)
\[\sqrt{E}\]
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B)
\[\frac{1}{\sqrt{E}}\]
done
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C)
\[\frac{1}{E}\]
done
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D)
Independent
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In a photosensitive cell with executing wavelength\[\lambda \], the fastest electron has speed v. It the exciting wavelength is changed to \[\frac{\lambda }{4}\]the speed of the fastest emitted electron will be:
A)
\[2v\]
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B)
\[\frac{v}{2}\]
done
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C)
\[<2v\]
done
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D)
\[>2v\]
done
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Boron rods are used in nuclear reactors because:
A)
Boron can absorb neutrons
done
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B)
Boron speeds up neutrons
done
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C)
Strength is given to the plant
done
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D)
The reactors look good
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In which one of the following systems will be the wavelength corresponding to n = 2 to n = 1 be minimum:
A)
Hydrogen atom
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B)
Deuterium atom
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C)
Single ionized helium
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D)
Doubly ionized Helium
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In an n-p-n transistor, the collector current is 10mA. If 90% of the electrons emitted reach the collector, then the emitter current will be about:
A)
9mA
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B)
11mA
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C)
1mA
done
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D)
0.1mA
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In the network shown:
A)
P. d across \[{{D}_{2}}\] is 5V
done
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B)
Current through resistor is 1.25A
done
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C)
Current through \[{{D}_{1}}\] is 1.25A
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D)
Current through diode \[{{D}_{2}}\] is 1.25A
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Using mass (M), length (L), time (T) and current [A] as fundamental quantities, the dimension of permeability is:
A)
[M-1 LT-2 A]
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B)
[ML-2 T-2 A-1]
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C)
[MLT-2 A-2]
done
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D)
[MLT-1 A-1]
done
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A vector \[\vec{P}=3\hat{i}-2\hat{j}+a\hat{k}\]is perpendicular to the vector\[\vec{Q}=2\hat{i}+\hat{j}-\hat{k}\]. Value of a is:
A)
2
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B)
4
done
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C)
1
done
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D)
3
done
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The velocity of a particle moving in the positive direction of x-axis varies as \[V=5\sqrt{x}\] Assuming that at t = 0, particle was at x = 0. What is the acceleration of the particle?
A)
\[12.5m/{{s}^{2}}\]
done
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B)
\[7.5m/{{s}^{2}}\]
done
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C)
\[5\text{ }m/{{s}^{2}}\]
done
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D)
\[2.5\text{ }m/{{s}^{2}}\]
done
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A piece of marble is projected from earth's surface with velocity of 19.6 m/s at\[45{}^\circ \]. After 2 sec its velocity makes an angle \[\alpha \] with horizontal, where a is:
A)
\[45{}^\circ \]
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B)
\[60{}^\circ \]
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C)
\[0{}^\circ \]
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D)
\[30{}^\circ \]
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Starting from rest, a body slides down a\[45{}^\circ \] inclined plane in twice a time, it takes to slide down the same distance in the absence of friction. The coefficient of friction between the body and the inclined plane is:
A)
\[0.2\]
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B)
\[0.25\]
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C)
\[0.75\]
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D)
\[0.5\]
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A ball is dropped on to the floor from a height of 10m. It rebounds to a height of 2.5m. If the ball is in contact with floor for \[{{10}^{-2}}\] sec, what is the average acceleration during contact?
A)
\[700\text{ }m/{{s}^{2}}\]
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B)
\[1400\text{ }m/{{s}^{2}}\]
done
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C)
\[2100\text{ }m/{{s}^{2}}\]
done
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D)
\[2800\text{ }m/{{s}^{2}}\]
done
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Force acting on a particle is\[(2\hat{i}+3\hat{j})\text{ }N\]. Work done by this force is zero, when a particle is moved on the line. Then value of k is:
A)
2
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B)
3
done
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C)
8
done
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D)
6
done
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A 1kg block collides with a horizontal weightless spring of force constant 2N/m. The block compresses the spring 4m from its rest position of the spring. If the coefficient of friction is 0.25, what was the speed of the block at the instant of collision?
A)
7.2m/s
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B)
5.4 m/s
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C)
6.4 m/s
done
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D)
10 m/s
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A coin is placed on a rotating turn table slips, when it is placed at a distance of 9cm from centre. If the angular velocity of the turn table is tripled, it will just slip, if its distance from the center is:
A)
27 cm
done
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B)
9 cm
done
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C)
3 cm
done
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D)
1 cm
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A particle of mass m at rest is acted upon by a constant force F for a time t. Its kinetic energy after an interval t is:
A)
\[\frac{{{F}^{2}}{{t}^{2}}}{m}\]
done
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B)
\[\frac{{{F}^{2}}{{t}^{2}}}{2m}\]
done
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C)
\[\frac{{{F}^{2}}{{t}^{2}}}{3m}\]
done
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D)
\[\frac{Ft}{2m}\]
done
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View Answer play_arrow
A cylinder of radius R and mass M rolls without slipping down a plane inclined at an angle\[\theta \]. Coefficient of friction between the cylinder and the plane is p. For what maximum inclination 0 the cylinder rolls without slipping?
A)
\[\theta ={{\tan }^{-1}}\left[ \frac{4}{3}\mu \right]\]
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B)
\[\theta ={{\tan }^{-1}}\left[ 2\mu \right]\]
done
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C)
\[\theta ={{\tan }^{-1}}\left[ 3\mu \right]\]
done
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D)
\[\theta ={{\tan }^{-1}}\left[ \frac{3}{2}\mu \right]\]
done
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If gravitational attraction between two points masses be given by \[F=\frac{G{{m}_{1}}{{m}_{2}}}{{{r}^{n}}}\]. Then period of a satellite in a circular orbit will be proportional to:
A)
\[{{r}^{\frac{(n+1)}{2}}}\]
done
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B)
\[{{r}^{\frac{n+1}{2}}}\]
done
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C)
\[{{r}^{\frac{n}{2}}}\]
done
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D)
\[n{}^\circ \]
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In case of a simple pendulum, the time period versus length is depicted by:
A)
done
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B)
done
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C)
done
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D)
done
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A pipe closed at one end produces as fundamental note of 412 Hz. It is cut into two pieces of equal length. The fundamental notes produced by the two pieces are:
A)
824 Hz, 1648 Hz
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B)
412 Hz, 824Hz
done
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C)
206 Hz, 412 Hz
done
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D)
206 Hz, 824 Hz
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View Answer play_arrow
The temperature at which the speed of sound in air becomes double of its value at \[27{}^\circ C\] is
A)
\[327{}^\circ C\]
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B)
\[127{}^\circ C\]
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C)
\[927{}^\circ C\]
done
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D)
\[-123{}^\circ C\]
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Temperature gradient in a rod of 0.5m long is\[80{}^\circ Cym\]. If the temperature of hotter end of the rod is \[30{}^\circ C\], then the temperature of the cooler end is:
A)
\[40{}^\circ C\]
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B)
\[10{}^\circ C\]
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C)
\[-10{}^\circ C\]
done
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D)
\[0{}^\circ C\]
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If the ratio of specific heat of a gas at constant pressure to that at constant volume is \[\lambda \], the change in internal energy of a mass of a gas, when the volume changes from V to 2V at constant pressure P is:
A)
\[\frac{R}{\gamma -1}\]
done
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B)
\[PV\]
done
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C)
\[\frac{PV}{\gamma -1}\]
done
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D)
\[\frac{\gamma PV}{\gamma -1}\]
done
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View Answer play_arrow
In the \[V-T\] diagram shown in figure. What is the relation between \[{{P}_{1}}\] and \[{{P}_{2}}\]:
A)
\[{{P}_{1}}>{{P}_{2}}\]
done
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B)
\[{{P}_{2}}>{{P}_{1}}\]
done
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C)
\[{{P}_{1}}>{{P}_{2}}\]
done
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D)
Cannot predicted
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View Answer play_arrow
For which combination of temperature the efficiency of Carnot?s engine is highest:
A)
80K, 60K
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B)
100K, 80K
done
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C)
60K, 40K
done
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D)
40K, 20K
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View Answer play_arrow
A solid shell loses half of its weight in water. Relative density of shell is 5. What fraction of its volume is hollow?
A)
\[\frac{3}{5}\]
done
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B)
\[\frac{2}{5}\]
done
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C)
\[\frac{4}{5}\]
done
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D)
\[\frac{1}{5}\]
done
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View Answer play_arrow
A uniform cube is subjected to volumetric compression. If each side is decreased by 1% then bulk strain:
A)
0.01
done
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B)
0.02
done
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C)
0.06
done
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D)
0.03
done
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Two elements x and y have atomic masses of 14 and 16 respectively. They form a series of compounds A, B, C, D and E in which for the same amount of element; x, y is present in the 1: 2 : 3 : 4 : 5. If the compound A has 28 parts by mass of x and 16 parts by mass of y, then the compound of C will have 28 parts by mass of x and:
A)
32 parts by mass of y
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B)
48 parts by mass of y
done
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C)
64 parts by mass y
done
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D)
80 arts by mass of y
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View Answer play_arrow
Which of the following sets of quantum number represent an impossible arrangement?
A)
n-\[3\] 1-\[2\] m-\[-2\] s-\[+\frac{1}{2}\]
done
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B)
n-\[4\] 1-\[0\] m-\[0\] s-\[-\frac{1}{2}\]
done
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C)
n-\[3\] 1-\[2\] m-\[-3\] s-\[+\frac{1}{2}\]
done
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D)
n-\[5\] 1-\[3\] m-\[0\] s-\[-\frac{1}{2}\]
done
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View Answer play_arrow
The electron affinity for the inert gases is:
A)
Zero
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B)
High
done
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C)
Negative
done
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D)
Positive
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View Answer play_arrow
In \[{{K}^{+}}{{F}^{-}}\], ionic radius of \[{{F}^{-}}\] is more than F while ionic radius of \[{{K}^{+}}\] is:
A)
Less than K
done
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B)
More than \[{{F}^{-}}\]
done
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C)
Equal to \[{{F}^{-}}\]
done
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D)
None of these
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View Answer play_arrow
Two elements have electronegativity's of 1.2 and 3.0. Bond formed between them would be:
A)
Ionic
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B)
Polar covalent
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C)
Co-ordinate
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D)
Metallic
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The energy that opposes dissolution of' a solvent is:
A)
Hydration energy
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B)
Lattice energy
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C)
Internal energy
done
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D)
Bond energy
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View Answer play_arrow
A certain sample of gas has a volume of 0.2 litre measured at 1 atm pressure and \[0{}^\circ C\]At the same pressure but at\[273{}^\circ C\], its volume will be:
A)
0.4 litres
done
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B)
0.8 litres
done
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C)
27.8 litres
done
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D)
55.6 litres
done
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View Answer play_arrow
For the gaseous reaction, \[{{N}_{2}}{{O}_{4}}\to 2N{{O}_{2}}:\]
A)
AH < AU
done
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B)
AH = AU
done
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C)
AH = 0
done
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D)
AH > AU
done
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View Answer play_arrow
The equilibrium concentration of x, y and\[y{{x}_{2}}\], are 4, 2 and 2 moles respectively for the equilibrium reaction\[2x+yy{{x}_{2}}\]. The value of \[{{K}_{C}}\] is:
A)
0.625
done
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B)
0.0625
done
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C)
6.25
done
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D)
0.00625
done
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View Answer play_arrow
Which is the CORRECT representation of the solubility product constant of
A)
\[{{[A{{g}^{+}}]}^{2}}\left[ CrO_{4}^{2-} \right]\]
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B)
\[[A{{g}^{+}}]\left[ CrO_{4}^{2-} \right]\]
done
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C)
\[[2A{{g}^{+}}]\left[ CrO_{4}^{2-} \right]\]
done
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D)
\[{{[2A{{g}^{+}}]}^{2}}\left[ CrO_{4}^{2-} \right]\]
done
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View Answer play_arrow
Strongest reducing agent is:
A)
\[{{F}^{-}}\]
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B)
\[C{{l}^{-}}\]
done
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C)
\[B{{r}^{-}}\]
done
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D)
\[F\]
done
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View Answer play_arrow
When zeolite (Hydrated sodium aluminium silicate) is treated with hard water the sodium ions are exchanged with:
A)
\[O{{H}^{-}}\]ions
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B)
\[SO_{4}^{2-}\]ions
done
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C)
\[C{{a}^{2+}}\]ions
done
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D)
\[{{H}^{+}}\] ions
done
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View Answer play_arrow
\[Be{{H}_{2}}\] is prepared by reducing \[BeC{{l}_{2}}\] with:
A)
Acids
done
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B)
\[LiAi{{H}_{4}}\]
done
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C)
Hydrogen
done
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D)
\[NaB{{H}_{4}}\]
done
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View Answer play_arrow
Red lead in an example of a/an __ oxide:
A)
Basic
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B)
Super
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C)
Mixed
done
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D)
Amphoteric
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View Answer play_arrow
An organic compound on analysis gave C = 48g, H = 8g and N = 56g volume of 1.0g of the compound was found to be 200 ml at N.T.P. molecular formula of the compound is:
A)
\[{{C}_{4}}{{H}_{8}}{{N}_{4}}\]
done
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B)
\[{{C}_{2}}{{H}_{4}}{{N}_{2}}\]
done
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C)
\[{{C}_{12}}{{H}_{24}}{{N}_{12}}\]
done
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D)
\[{{C}_{16}}{{H}_{32}}{{N}_{16}}\]
done
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View Answer play_arrow
Conversion of \[C{{H}_{4}}\]to\[C{{H}_{3}}Cl\] is an example of which of the following reaction?
A)
Electrophilic substitution
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B)
Free radical addition
done
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C)
Nucleophile substitution
done
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D)
Free radical substitution
done
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View Answer play_arrow
Formation of alkane by the action of Li and Cul on alkly halide is called?
A)
Corey - house reaction
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B)
Wurtz reaction
done
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C)
Cannizzaro reaction
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D)
Kolbe's reaction
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View Answer play_arrow
Which has zero dipole moment?
A)
Cis-2-butene
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B)
trans-2-butene
done
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C)
1-butene
done
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D)
2-methyl-1-propene
done
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View Answer play_arrow
Which one of the following will undergo Meta substitution on monochlorination?
A)
Ethoxy ethane
done
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B)
Chlorobenzene
done
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C)
Ethyl benzoate
done
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D)
Phenol
done
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View Answer play_arrow
The compound that is most reactive towards electrophilic nitration is:
A)
Toluene
done
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B)
Benzene
done
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C)
Benzoic acid
done
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D)
Nitrobenzene
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View Answer play_arrow
Among the following compounds, which one is not responsible for depletion of ozone layer?
A)
\[C{{H}_{4}}\]
done
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B)
\[CFC{{l}_{3}}\]
done
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C)
\[{{N}_{2}}O\]
done
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D)
\[C{{l}_{2}}\]
done
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View Answer play_arrow
If 'a' stands for the edge length of the cubic systems simple cubic, body-centre cubic, and face-centered cubic, then the ratio of radii of the spheres in these system will be respectively:
A)
\[\frac{1}{2}a:\frac{\sqrt{3}}{2}a:\frac{\sqrt{2}}{2}a\]
done
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B)
\[la:\sqrt{3a}:\sqrt{2}a\]
done
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C)
\[\frac{1}{2}a:\frac{\sqrt{3}}{4}a:\frac{1}{2\sqrt{2}}a\]
done
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D)
\[\frac{1}{2}a:\sqrt{3}a:\frac{1}{\sqrt{2}}a\]
done
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View Answer play_arrow
The normality of 10L volume hydrogen peroxide is:
A)
0.176
done
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B)
3.52
done
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C)
1.78
done
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D)
0.88
done
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View Answer play_arrow
At \[25{}^\circ C\]specific conductivity of a normal solution of KCl is 0.002765 mho. The resistance of cell is 400 ohms. The cell constant is:
A)
0.815
done
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B)
1.106
done
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C)
1.016
done
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D)
2.016
done
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View Answer play_arrow
A certain reaction proceeds in sequence of three elementary steps with rate constant \[{{K}_{1}},{{K}_{2}}\]and\[{{K}_{3}}\]. If \[{{K}_{obs}}={{\left[ \frac{{{K}_{1}}}{{{K}_{2}}} \right]}^{{}^{1}/{}_{2}}}{{K}_{3}}\] the observed \[{{E}_{a}}\]is:
A)
\[\frac{1}{2}\left[ \frac{{{E}_{1}}}{{{E}_{2}}} \right]+{{E}_{3}}\]
done
clear
B)
\[\frac{{{E}_{3}}+{{E}_{1}}}{2}\]
done
clear
C)
\[\frac{1}{2}{{\left[ \frac{{{E}_{1}}}{{{E}_{2}}} \right]}^{{}^{1}/{}_{2}}}\]
done
clear
D)
\[{{E}_{3}}+\frac{1}{2}[{{E}_{1}}-{{E}_{2}}]\]
done
clear
View Answer play_arrow
The catalyst used in the lead chamber process of sulphuric acid manufacture is:
A)
Platinum
done
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B)
Oxide of nitrogen
done
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C)
Nickel
done
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D)
Vanadium compounds
done
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View Answer play_arrow
Sapphire is mineral of:
A)
Cu
done
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B)
Zn
done
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C)
Al
done
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D)
Mg
done
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View Answer play_arrow
Which of the following compounds does not exist?
A)
\[SbC{{l}_{.3}}\]
done
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B)
\[BiC{{l}_{5}}\]
done
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C)
\[SbC{{l}_{5}}\]
done
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D)
\[AsC{{l}_{5}}\]
done
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View Answer play_arrow
Which of the following is paramagnetic?
A)
\[S{{c}^{+++}}\]
done
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B)
\[C{{u}^{+}}\]
done
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C)
\[Z{{n}^{++}}\]
done
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D)
\[N{{i}^{++}}\]
done
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View Answer play_arrow
A reagent used for identifying nickel ion is:
A)
Potassium ferrocyanide
done
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B)
Dimethyl glyoxime
done
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C)
Phenolphthalein
done
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D)
EDTA
done
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View Answer play_arrow
Which of the following organometallic compound is o and \[\pi \] - bonded?
A)
\[[Fe{{({{n}^{5}}-{{C}_{5}}{{H}_{5}})}_{2}}]\]
done
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B)
\[[PtC{{l}_{3}}({{n}^{2}}-{{C}_{2}}{{H}_{4}})]\]
done
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C)
\[{{[Co{{(Co)}_{5}}N{{H}_{3}}]}^{2+}}\]
done
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D)
\[Al{{(C{{H}_{3}})}_{3}}\]
done
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View Answer play_arrow
When phenol reacts with \[CHC{{l}_{3}}\] and KOH, the product obtained would be:
A)
Salicyladehyde
done
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B)
p-hydroxy benzaldehyde
done
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C)
Both a and b
done
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D)
Chloretone
done
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View Answer play_arrow
What is the product in the following reaction?
A)
done
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B)
done
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C)
done
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D)
done
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View Answer play_arrow
Which acid is strongest or which is mast acidic?
A)
\[C{{l}_{3}}C.COOH\]
done
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B)
\[ClC{{H}_{2}}COOH\]
done
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C)
\[C{{H}_{3}}COOH\]
done
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D)
\[C{{l}_{2}}CH.COOH\]
done
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View Answer play_arrow
Find the hydrolysis product of maltose?
A)
\[\alpha -D-glucose+\alpha -D-glucose\]
done
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B)
\[\alpha -D-glucase+\alpha -D-fructose\]
done
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C)
\[\alpha -D-glucose+\alpha -D-galactose\]
done
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D)
\[\alpha -D-fructose+\alpha -D-galactose\]
done
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View Answer play_arrow
The hormone that helps in conversion of glucose to glycogen is:
A)
Cortisone
done
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B)
Bile salt
done
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C)
Adrenaline
done
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D)
Insulin
done
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View Answer play_arrow
Perlonis:
A)
Rubber
done
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B)
Nylon-6
done
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C)
Terelene
done
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D)
Oxion
done
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View Answer play_arrow
Which of the following is not a broad spectrum antibiotic?
A)
Tetracycline
done
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B)
Chloromycetin
done
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C)
Penicillin
done
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D)
None of these
done
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View Answer play_arrow
Which of the following colour is imparted by alizarin dye in the presence of \[C{{r}^{3+}}\] ion?
A)
Violet
done
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B)
Brown-red
done
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C)
Pink
done
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D)
Red
done
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View Answer play_arrow
Which gives violet coloured bead in borax beael test?
A)
\[F{{e}^{2+}}\]
done
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B)
\[N{{i}^{2+}}\]
done
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C)
\[C{{O}^{2++}}\]
done
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D)
\[M{{n}^{2+}}\]
done
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View Answer play_arrow
The compound which does not react with sodium is:
A)
\[{{C}_{3}}COOH\]
done
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B)
\[C{{H}_{3}}CHOHC{{H}_{3}}\]
done
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C)
\[{{C}_{2}}{{H}_{5}}OH\]
done
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D)
\[C{{H}_{3}}OC{{H}_{3}}\]
done
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View Answer play_arrow
The general molecular formula, which represents the homologous series of alkanals is:
A)
\[{{C}_{n}}{{H}_{2n}}O\]
done
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B)
\[{{C}_{n}}{{H}_{2n}}{{O}_{2}}\]
done
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C)
\[{{C}_{n}}{{H}_{2n+2}}{{O}_{2}}\]
done
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D)
\[{{C}_{n}}{{H}_{2n}}+O\]
done
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View Answer play_arrow
Given
Which of the given compounds can exhibits tautomerism:
A)
II and III
done
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B)
I, II and III
done
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C)
I and II
done
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D)
I and III
done
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View Answer play_arrow
The stability of +1 oxidation state increases in the sequence:
A)
Tl < In < Ga < Al
done
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B)
In < Tl < Ga < Al
done
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C)
Ga < In < Al < Tl
done
clear
D)
Al < Ga < In < Tl
done
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View Answer play_arrow
What is the pH of the resulting solution when equal volumes of 0.1M NaOH and 0.01M HCl are mixed?
A)
2.0
done
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B)
7.0
done
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C)
1.04
done
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D)
12.65
done
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View Answer play_arrow
Which one of the following is a living fossil
A)
Pinus long folia
done
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B)
Dalbergia sissoo
done
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C)
Mirabilis
done
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D)
Ginkgo biloba
done
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View Answer play_arrow
What is used for drying plant specimens?
A)
Filter paper
done
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B)
Blotting paper
done
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C)
Parchment paper
done
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D)
Cellophone paper
done
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View Answer play_arrow
Ethnogallary is a part of ____
A)
Herbarium
done
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B)
Parks
done
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C)
Museum
done
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D)
Botanical Garden
done
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View Answer play_arrow
Where the Herbarium of forest research is located?
A)
Kew
done
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B)
Paris
done
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C)
Dehradun
done
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D)
Kolkata
done
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View Answer play_arrow
Prokaryotes are included which kingdom:
A)
Protista
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B)
Monera
done
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C)
Basidiomycetes
done
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D)
Protozoa
done
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View Answer play_arrow
Pyrenoids are the centres for formation of:
A)
Porphyra
done
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B)
Enzymes
done
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C)
Fat
done
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D)
Starch
done
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View Answer play_arrow
Which one of the following is not common between funaria and selaginella?
A)
Archegonium
done
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B)
Embryo
done
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C)
Flagellate sperms
done
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D)
Roots
done
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View Answer play_arrow
Bird vertebrae are:
A)
Acoelous
done
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B)
Heterocoelous
done
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C)
Amphicoelous
done
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D)
Procoelous
done
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View Answer play_arrow
Gorilla, Chimpanzee, monkeys and Human belong to the same:
A)
Species
done
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B)
Genus
done
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C)
Family
done
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D)
Order
done
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View Answer play_arrow
Cork is formed from:
A)
Cork cambium
done
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B)
Vascular cambium
done
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C)
Phloem
done
clear
D)
Xylem
done
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View Answer play_arrow
Where the caparison bands do occurs?
A)
Epidermis
done
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B)
Endodermis
done
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C)
Pericycle
done
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D)
Phloem
done
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View Answer play_arrow
Bordered pits are found in:
A)
Sieve cells
done
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B)
Vessel wall
done
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C)
Companion cells
done
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D)
Sieve tube wall
done
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View Answer play_arrow
Sclereids are also known as:
A)
Accessory cells
done
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B)
Companion cells
done
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C)
Stone cells
done
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D)
Guard cells
done
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View Answer play_arrow
Which type of thickening is found in protoxylem:
A)
Reticulated
done
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B)
Spiral
done
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C)
Pitted
done
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D)
Sclariform
done
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View Answer play_arrow
Which is metabolic waste product of blood:
A)
Fibrinogen
done
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B)
Lymphocytes
done
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C)
Lysine
done
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D)
Carbon dioxide
done
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View Answer play_arrow
Fruit of Mangifera indica is:
A)
Berry
done
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B)
Drupe
done
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C)
Capsule
done
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D)
Siliqua
done
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View Answer play_arrow
Floral formula of tomato/tobacco is:
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
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View Answer play_arrow
Which one of the following is a true fruit?
A)
Apple
done
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B)
Pear
done
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C)
Cashewnut
done
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D)
Coconut
done
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View Answer play_arrow
What is Drupe:
A)
Hard Epicarp
done
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B)
Hard endocarp
done
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C)
Hard mesocarp
done
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D)
No epicarp
done
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View Answer play_arrow
The hairs present in maize corn cob are:
A)
Styles
done
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B)
Stigma
done
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C)
Seed hairs
done
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D)
Modified hairs of bracts
done
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View Answer play_arrow
A root can be differentiated from the stem because of the absence of :
A)
Green colour
done
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B)
Nods and internodes
done
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C)
Hair
done
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D)
Branches
done
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View Answer play_arrow
A characteristic of angiosperm plant:
A)
Flower
done
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B)
Root
done
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C)
Seed
done
clear
D)
All of the above
done
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View Answer play_arrow
Edible part litchi is called:
A)
Mesocarp
done
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B)
Fleshy aril
done
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C)
Endocarp
done
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D)
Pericarp
done
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View Answer play_arrow
Fertilization occurs in cockroach in ______
A)
Ovary
done
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B)
Ovarian tubule
done
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C)
Genital chamber
done
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D)
Ootheca
done
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View Answer play_arrow
Fluid mosaic model of cell membrane was put forward by:
A)
Danielli and Darson
done
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B)
Singer and Nicolson
done
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C)
Garner and Allard
done
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D)
Watson and Crick
done
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View Answer play_arrow
Middle lamella is mainly composed of:
A)
Hemicellulose
done
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B)
Muromic acid
done
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C)
Calcium pectate
done
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D)
Phosphoglycerides
done
clear
View Answer play_arrow
DNA is composed of repeating units of:
A)
Ribonucleosides
done
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B)
Deoxyribonucleosides
done
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C)
Ribonucleotides
done
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D)
Deoxyribonucleotides
done
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View Answer play_arrow
Which of the following is a reducing sugar?
A)
Galactose
done
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B)
Gluconic acid
done
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C)
\[\beta \]- methyl galactoside
done
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D)
Sucrose
done
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View Answer play_arrow
Aspartic acid and lysine are linkage each other with which bond:
A)
Ester bond
done
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B)
Glycoside bond
done
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C)
Phosphodiester bond
done
clear
D)
Peptide bond
done
clear
View Answer play_arrow
Mitosis can occur in:
A)
Haploid and diploid cell both
done
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B)
Pollen mother cells
done
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C)
Haploid cell only
done
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D)
Diploid cell only
done
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View Answer play_arrow
In xerophytic leaf the stomata are situated:
A)
On both surfaces
done
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B)
On upper surface
done
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C)
On lower surface
done
clear
D)
Absent from both surface
done
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View Answer play_arrow
Which element deficiency shows broncing leaves?
A)
K
done
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B)
N
done
clear
C)
Ca
done
clear
D)
S
done
clear
View Answer play_arrow
NADP+ is reduced to NADPH in:
A)
PS - I
done
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B)
PS - II
done
clear
C)
Calvin cycle
done
clear
D)
Non - cyclic photo phosphorylation
done
clear
View Answer play_arrow
Kranz anatomy is typical of:
A)
\[{{C}_{4}}-plants\]
done
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B)
\[{{C}_{3}}-plants\]
done
clear
C)
\[{{C}_{2}}-plants\]
done
clear
D)
CAM plants
done
clear
View Answer play_arrow
Krebs cycle take place in:
A)
Cytoplasmic matrix
done
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B)
Mitochondrial matrix
done
clear
C)
\[{{F}_{1}}\]particles
done
clear
D)
All of these
done
clear
View Answer play_arrow
Which hormone reduces the dominance of apical bud?
A)
Auxin
done
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B)
ABA
done
clear
C)
Ethylene
done
clear
D)
Cytokinin
done
clear
View Answer play_arrow
Which is natural growth inhibitor or senescence inducing hormone?
A)
IAA
done
clear
B)
ABA
done
clear
C)
NAA
done
clear
D)
GA
done
clear
View Answer play_arrow
What product can be obtain by erepsin?
A)
Glucose
done
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B)
Amino acid
done
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C)
Trypsin
done
clear
D)
Glycerol
done
clear
View Answer play_arrow
Enzyme trypsin is secreted by:
A)
Duodenum
done
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B)
Liver
done
clear
C)
Pancreas
done
clear
D)
Stomach
done
clear
View Answer play_arrow
Oxygen dissociation curve of haemoglobin is:
A)
Sigmoid
done
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B)
Hyperbolic
done
clear
C)
Linear
done
clear
D)
Hypobolic
done
clear
View Answer play_arrow
Volume of air breath in and out during effortless respiration is:
A)
Residual volume
done
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B)
Vital volume
done
clear
C)
Tidal volume
done
clear
D)
Normal volume
done
clear
View Answer play_arrow
Systolic pressure of heart ____ mmHg:
A)
80 mmHg
done
clear
B)
120 mmHg
done
clear
C)
40 mm Hg
done
clear
D)
320 mm Hg
done
clear
View Answer play_arrow
Arteries carry oxygenated blood except:
A)
Pulmonary
done
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B)
Cardiac
done
clear
C)
Hepatic
done
clear
D)
Systemic
done
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View Answer play_arrow
The mechanism of urine foundation nephrone involves:
A)
Utrafication
done
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B)
Secretion
done
clear
C)
Reabsorption
done
clear
D)
All of the above
done
clear
View Answer play_arrow
\[N{{A}^{+}}\] and \[C{{l}^{-}}\]are absorbed in kidney in region
A)
Ascending limb of bend's loop
done
clear
B)
Descending limb of benel?s loop
done
clear
C)
DCT
done
clear
D)
PCT
done
clear
View Answer play_arrow
Morphologically distinct gametes are called
A)
Isogametes
done
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B)
Heterogametes
done
clear
C)
Gametes
done
clear
D)
Iso - spores
done
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View Answer play_arrow
Pollen grains represent:
A)
The future sporophytes
done
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B)
The sporophyte
done
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C)
The gameto phyte
done
clear
D)
The male gametophyte
done
clear
View Answer play_arrow
Which is the most resistant natural organic material?
A)
Cellulose
done
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B)
Pectin
done
clear
C)
Suberin
done
clear
D)
Sporopollenin
done
clear
View Answer play_arrow
The embryo sac is formed inside the:
A)
Seed
done
clear
B)
Endosperm
done
clear
C)
Embryo
done
clear
D)
Ovule
done
clear
View Answer play_arrow
Which cells produces of spermatids:
A)
Secondary germinal cells
done
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B)
Spermatogoina
done
clear
C)
Primary germinal cells
done
clear
D)
Spermatocytes
done
clear
View Answer play_arrow
In spermatogenesis which processes occur for secondary Spermatocytes?
A)
Miotic
done
clear
B)
Meiosis
done
clear
C)
Amitosis
done
clear
D)
a & b
done
clear
View Answer play_arrow
In menstrual cycle on which day ovulatior occurs:
A)
On 12th day
done
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B)
On 13th day
done
clear
C)
On 14th day
done
clear
D)
On 15th day
done
clear
View Answer play_arrow
Daily oral contraceptive pill is:
A)
Mala D
done
clear
B)
Mala M and Mala D
done
clear
C)
Mala A
done
clear
D)
Mala C
done
clear
View Answer play_arrow
In vasectomy which part is tied and cut?
A)
Epididydermis
done
clear
B)
Vas deferens
done
clear
C)
Ejeculatony duct
done
clear
D)
Urinogenitial duct
done
clear
View Answer play_arrow
Crossing over during meiosis occurs between:
A)
Sister chromatids
done
clear
B)
Centromeres
done
clear
C)
Non-sister chromatids
done
clear
D)
Non-homologous chromosome
done
clear
View Answer play_arrow
In dihybrid cross between AABB and aabb the ration of AABB, AABb, aaBb, aabb in F2 generation is:
A)
9 : 3 : 3 : 1
done
clear
B)
1 : 1 : 1 : 1
done
clear
C)
1 : 2 : 2 : 1
done
clear
D)
1 : 1 : 2 : 2
done
clear
View Answer play_arrow
Mutation can be induced with:
A)
Infrared radiations
done
clear
B)
IAA
done
clear
C)
Ethylene
done
clear
D)
Gamma radiations
done
clear
View Answer play_arrow
ABO blood groups in humans are controlled by the gene I. It has three allele - IA, IB and i. Since there are 3 different alleles six different genotypes are possible. How many phenotypes occurs?
A)
Three
done
clear
B)
One
done
clear
C)
Four
done
clear
D)
Two
done
clear
View Answer play_arrow
State the anticodon of initiation codon of protein synthesis is:
A)
UAC
done
clear
B)
UUU
done
clear
C)
CAU
done
clear
D)
AUG
done
clear
View Answer play_arrow
How many nucleotides make one okazaki segment in eukaryotes?
A)
\[1000-1500\]
done
clear
B)
\[100-200\]
done
clear
C)
\[5000\]
done
clear
D)
Not fixed
done
clear
View Answer play_arrow
Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a 'triplet':
A)
Hershey and chase
done
clear
B)
Morgan and sturterant
done
clear
C)
Beadle and Tatum
done
clear
D)
Nirenberg and Mathai
done
clear
View Answer play_arrow
The Doctrine of evolution is concerned with
A)
Gradual changes
done
clear
B)
Abiogenesis
done
clear
C)
Biogenesis
done
clear
D)
None of the above
done
clear
View Answer play_arrow
The Jurassic period belongs to the _____era:
A)
Proterozoic
done
clear
B)
Archezoic
done
clear
C)
Mesozoic
done
clear
D)
Cenozoic
done
clear
View Answer play_arrow
An important evidence in favour of organic evolution is the occurrence of:
A)
Homologous and Analogous organs
done
clear
B)
Homologous and Vestiginal organs
done
clear
C)
Analogous and vestiginal organs
done
clear
D)
Homologous organs only
done
clear
View Answer play_arrow
Which genetically engineered technique is used to reduced environmental pollution to solve human nutrition problem:
A)
Single cell protein
done
clear
B)
Bio fortification
done
clear
C)
Bio gas production
done
clear
D)
Pasteurization
done
clear
View Answer play_arrow
Edible marine fishes are:
A)
Hilsa, Pomfret, Catia
done
clear
B)
Catia, Mackerel, Mrigal
done
clear
C)
Sardin, Mackerel, Mrigal
done
clear
D)
Sardin, Pomfret, Marckeral
done
clear
View Answer play_arrow
Anit-allergens: Ig E Colostrum: ______
A)
Ig-G
done
clear
B)
IgM
done
clear
C)
Ig-A
done
clear
D)
IgD
done
clear
View Answer play_arrow
Which is most infection disease?
A)
Hepatitis - B
done
clear
B)
AIDS
done
clear
C)
Cough and common cold
done
clear
D)
Malaria
done
clear
View Answer play_arrow
By what antibodies are made?
A)
RBCs
done
clear
B)
Thrombocytes
done
clear
C)
Monocytes
done
clear
D)
Lymphocytes
done
clear
View Answer play_arrow
Barrier preventing entry of pathogens:
A)
Skin
done
clear
B)
Mucous layor
done
clear
C)
Mucous secretion
done
clear
D)
Cillia
done
clear
View Answer play_arrow
Full form of BOD:
A)
Biological Oxygen Demand
done
clear
B)
Bio oxygen Demand
done
clear
C)
Biochemical Oxygen Demand
done
clear
D)
Biochemical Oxygen Degradable
done
clear
View Answer play_arrow
Which is useful to control Nematodes in cereal crops?
A)
Bionemotocides
done
clear
B)
Fungicides
done
clear
C)
Weedicides
done
clear
D)
Inceticides
done
clear
View Answer play_arrow
Improvement of genotype of an organism by addition of some foreign gene is:
A)
Genetic diversity
done
clear
B)
Gene handling
done
clear
C)
Tissue culture
done
clear
D)
Genetic engineering
done
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How many restriction enzymes are known to be isolated?
A)
More than 800
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B)
More than 700
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C)
More than 600
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D)
More than 900
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Which one is a transgenic crop?
A)
Brinjal
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B)
Potato
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C)
Grape
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D)
Tomato
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The genetically modified crop introduced in India:
A)
Cotton
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B)
Mustard
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C)
Wild plant
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D)
Both a and b
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In the lichen which layer is seen just below "upper cortex":
A)
Medulla
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B)
Algal layer
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C)
Lower cortex
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D)
AH of these
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What is the composition of soil with high water logging capacity?
A)
Sandy soil
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B)
Black soil
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C)
Rocky soil
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D)
Any of these
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At each trophic level, in which form energy is lost?
A)
Heat
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B)
Chemical
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C)
Light
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D)
None
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Which source of eutrophication is modern source of phosphorus?
A)
Detergent
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B)
Fertilizers
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C)
Faecafof animal
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D)
Rivers
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It helps in absorption of phosphorous?
A)
Leaves
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B)
Mycorriza
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C)
Root
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D)
Stem
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Which adaptation is observe only in xerophytes?
A)
CAM
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B)
Hatch - slack
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C)
TCA
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D)
\[{{C}_{3}}\] cycle
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Which organisation is active for conservation of biodiversity at world level?
A)
WWF
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B)
WCU
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C)
a and b both
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D)
EE
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In which zone there is no disturbance:
A)
Buffer zone
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B)
Core zone
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C)
Transition zone
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D)
All the given
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Which is the example of ex-sites conservation?
A)
National park
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B)
Sancturay
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C)
Biosphere reserve
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D)
Zoo
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Which disease is not caused by water pollution?
A)
Cholera
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B)
Typhoid
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C)
Tuberculosis
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D)
Dysentery
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Which atoms are released by the action of uv ray on CFC?
A)
O
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B)
C
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C)
F
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D)
Cl
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Measurement of ozone layer is done by unit:
A)
Du
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B)
Db
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C)
Ds
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D)
dv
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Formation of ozone hole is maximum over:
A)
Antarctica
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B)
Europe
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C)
Africa
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D)
India
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Slash and burn agriculture means:
A)
Agriculture on desert land
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B)
Jhum cultivation
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C)
Cultivation on hills
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D)
Reforestation
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