A physical quantity is determined P\[=\frac{\sqrt{ab{{c}^{2}}}}{{{d}^{3}}{{e}^{1/3}}}\] measuring a, b, c, d and e separately with the percentage error of 2%, 3%, 2%, 1% and 6% respectively. Minimum amount of error is contributed by the measurement:
A)
b
done
clear
B)
a
done
clear
C)
d
done
clear
D)
e
done
clear
View Answer play_arrow
A particle of mass M, attached to one end of a spiral spring describes S.H.M. When the particle is passing through the mean position another particle of mass m is fixed on mass M. The ratio of frequency of the system in the two cases is:
A)
\[\frac{M}{m+M}\]
done
clear
B)
\[\sqrt{\frac{M}{m+M}}\]
done
clear
C)
\[\frac{m+M}{M}\]
done
clear
D)
\[\sqrt{\frac{m+M}{M}}\]
done
clear
View Answer play_arrow
A ball rolls off the top of a stairway with horizontal velocity \[{{v}_{o}}\text{ }m/s.\]If the steps are h metres high and w metres wide, the ball will hit the edge of n111 step, if:
A)
\[n=\frac{2h{{v}_{o}}}{g{{w}^{2}}}\]
done
clear
B)
\[n=\frac{2h{{v}^{2}}_{o}}{gw}\]
done
clear
C)
\[n=\frac{h{{v}^{2}}_{o}}{g{{w}^{2}}}\]
done
clear
D)
\[n=\frac{2h{{v}^{2}}_{o}}{g{{w}^{2}}}\]
done
clear
View Answer play_arrow
A steel wire is suspended vertically from a rigid support. When loaded with a weight in air, it extends by \[{{l}_{a}}\] and when the weight is immersed completely in water, the extension is reduced to\[{{l}_{w}}\]. Then the relative density of:
A)
\[\frac{{{l}_{a}}}{{{l}_{w}}}\]
done
clear
B)
\[\frac{{{l}_{a}}}{{{l}_{a}}-{{l}_{w}}}\]
done
clear
C)
\[\frac{{{l}_{w}}}{{{l}_{a}}-{{l}_{w}}}\]
done
clear
D)
\[\frac{{{l}_{w}}}{{{l}_{a}}}\]
done
clear
View Answer play_arrow
A frictionless wire is fixed between P and R inside a sphere of radius R. A small ball slips along the wire. The time taken by the ball to slip from P to R will be:
A)
\[\frac{2\sqrt{\mathrm{R}}}{\sqrt{\mathrm{g}}\,\mathrm{cos}\,\theta }\]
done
clear
B)
\[\frac{2\sqrt{\mathrm{R}}\,\mathrm{cos}\,\theta }{\mathrm{g}\,}\]
done
clear
C)
\[2\sqrt{\frac{\mathrm{R}}{\mathrm{g}\,}}\]
done
clear
D)
\[\frac{\sqrt{\operatorname{gR}}}{\cos \,\theta \,}\]
done
clear
View Answer play_arrow
A particle gets displaced through \[\hat{i}+2\hat{j}+4\hat{k}\]due to force\[\left( 2\hat{i}-3\hat{j}+16\hat{k} \right)\] N in 3 seconds. The power in watts is:
A)
18
done
clear
B)
6
done
clear
C)
54
done
clear
D)
20
done
clear
View Answer play_arrow
The output Y of the logic circuit as shown in figure is:
A)
\[\left( A+B \right).\overline{C}\]
done
clear
B)
\[\left( A+C \right).\overline{B}\]
done
clear
C)
\[\left( B+C \right).\bar{A}\]
done
clear
D)
\[\operatorname{A}+B+\bar{C}\]
done
clear
View Answer play_arrow
Equal volume of two immiscible liquids of densities p and 2 p are filled in a vessel as shown in figure. Two small holes are punched at depths \[\frac{h}{2}\] and\[\frac{3h}{2}\] from the surface of lighter liquid. If \[{{\operatorname{v}}_{1}}\]and\[{{\operatorname{v}}_{2}}\]are the velocities of efflux at these two holes.
A)
\[\frac{1}{2\sqrt{2}}\]
done
clear
B)
\[\frac{1}{2}\]
done
clear
C)
\[\frac{1}{4}\]
done
clear
D)
\[\frac{1}{\sqrt{2}}\]
done
clear
View Answer play_arrow
De-Broglie wavelength of a neutron at \[927{}^\circ C\]is \[\lambda \]. What will be its wavelength at\[27{}^\circ C\]?
A)
\[\frac{\lambda }{9}\]
done
clear
B)
\[\lambda \]
done
clear
C)
\[2\lambda \]
done
clear
D)
\[4\lambda \]
done
clear
View Answer play_arrow
A magnetic needle is kept in a non-uniform magnetic field. If experiences:
A)
A force only but not a torque
done
clear
B)
A force and torque both
done
clear
C)
A torque only but not a force
done
clear
D)
Neither a torque nor a force
done
clear
View Answer play_arrow
If \[{{\operatorname{f}}_{1}}\]is the frequency of the series limit of Lyman series, \[{{\operatorname{f}}_{\,2}}\]is the frequency of the first line of Lyman series and \[{{\operatorname{f}}_{\,3}}\] is the frequency of the series limit of the Balmer series then:
A)
\[{{\operatorname{f}}_{\,1}}-{{\operatorname{f}}_{\,2}}={{\operatorname{f}}_{\,3}}\]
done
clear
B)
\[{{\operatorname{f}}_{\,1}}={{\operatorname{f}}_{\,2}}-{{\operatorname{f}}_{\,3}}\]
done
clear
C)
\[\frac{1}{{{\operatorname{f}}_{\,2}}}=\frac{1}{{{\operatorname{f}}_{\,1}}}+\frac{1}{{{\operatorname{f}}_{\,3}}}\]
done
clear
D)
\[\frac{1}{{{\operatorname{f}}_{\,1}}}=\frac{1}{{{\operatorname{f}}_{\,2}}}+\frac{1}{{{\operatorname{f}}_{\,3}}}\]
done
clear
View Answer play_arrow
A wire loop PQRSP is constructed by joining two semi-circular coils of radius\[{{\operatorname{r}}_{\,1}}\]and\[{{\operatorname{r}}_{\,2}}\] respectively, as shown in the figure. If the current flowing in the loop is I, then the magnetic induction at the point o is:
A)
\[\frac{{{\mu }_{\operatorname{o}}}\operatorname{I}}{4}\left[ \frac{1}{{{r}_{1}}}-\frac{1}{{{r}_{2}}} \right]\]
done
clear
B)
\[\frac{{{\mu }_{\operatorname{o}}}\operatorname{I}}{4}\left[ \frac{1}{{{r}_{1}}}+\frac{1}{{{r}_{2}}} \right]\]
done
clear
C)
\[\frac{{{\mu }_{\operatorname{o}}}\operatorname{I}}{2}\left[ \frac{1}{{{r}_{1}}}-\frac{1}{{{r}_{2}}} \right]\]
done
clear
D)
\[\frac{{{\mu }_{\operatorname{o}}}\operatorname{I}}{2}\left[ \frac{1}{{{r}_{1}}}+\frac{1}{{{r}_{2}}} \right]\]
done
clear
View Answer play_arrow
A particle of mass 100g is thrown vertically upwards with a speed of 5w/s. The work done by the force of gravity during the time, the particle goes up:
A)
-0.5J
done
clear
B)
-1.25J
done
clear
C)
1.25J
done
clear
D)
0.5J
done
clear
View Answer play_arrow
The photoelectric threshold wavelength for Ag (silver) is \. The \[{{\lambda }_{\operatorname{o}}}\]energy of the electron ejected from the surface of silver by an incident wavelength \[\lambda (\lambda <{{\lambda }_{\operatorname{o}}})\] will be:
A)
\[\operatorname{hc}({{\lambda }_{\operatorname{o}}}-\lambda )\]
done
clear
B)
\[\frac{\operatorname{hc}}{{{\lambda }_{\operatorname{o}}}-\lambda }\]
done
clear
C)
\[\frac{h}{c}\left[ \frac{{{\lambda }_{\operatorname{o}}}-\lambda }{\lambda {{\lambda }_{\operatorname{o}}}} \right]\]
done
clear
D)
\[\operatorname{hc}\left[ \frac{{{\lambda }_{\operatorname{o}}}-\lambda }{\lambda {{\lambda }_{\operatorname{o}}}} \right]\]
done
clear
View Answer play_arrow
A npn transistor is connected in common emitter configuration in a given amplifier. A load resistance of \[800\Omega \]is connected in the collector circuit and the voltage drop across it is 0.8V. If the current amplification factor is 0.96 and the input resistance of the circuit is \[192\Omega \], the voltage gain and the power gain of the amplifier will respectively by:
A)
4, 3.84
done
clear
B)
3.69, 3.84
done
clear
C)
4, 4
done
clear
D)
4, 3.69
done
clear
View Answer play_arrow
The shear modulus of a liquid is:
A)
Zero
done
clear
B)
Unity
done
clear
C)
Infinity
done
clear
D)
None
done
clear
View Answer play_arrow
Imagine a new planet having the same density as that of earth but it is 3times bigger than the earth in size. If the acceleration due to gravity on the surface of earth is g and that on the surface of new plant is g1 then:
A)
g1 = 3g
done
clear
B)
g1=9g
done
clear
C)
\[\operatorname{g}1\frac{g}{9}\]
done
clear
D)
g1=27g
done
clear
View Answer play_arrow
A transformer of 100% efficiency has 200 turns in the primary and 40,000 turns in secondary. It is connected to a 220V main supply and secondary feeds to a\[100k\Omega \]resistance. The potential difference per turn is:
A)
1.1V
done
clear
B)
25V
done
clear
C)
18V
done
clear
D)
11V
done
clear
View Answer play_arrow
Two coherent sources of different intensities sound waves which interfere. The ratio of maximum intensity to the minimum intensity is 25. The intensities of the sources are in the ratio:
A)
25:1
done
clear
B)
5:l
done
clear
C)
9:4
done
clear
D)
25:16
done
clear
View Answer play_arrow
A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series? first to support one another and then in opposite direction. The balance points are obtained at 50cm and 10cm from the positive end of the wire in the two cases. The ratio of emf' s is:
A)
5:1
done
clear
B)
5:4
done
clear
C)
3:4
done
clear
D)
3:2
done
clear
View Answer play_arrow
A radio isotope \[X\]with a half-life \[1.4\times {{10}^{9}}\] yr of Y which is stable. A sample of the rock from a cave was found to contain \[X\]and \[Y\]in the ratio 1: 7. The age of the rock is:
A)
\[1.96\times {{10}^{9}}\,\operatorname{yr}\]
done
clear
B)
\[3.92\times {{10}^{9}}\,\operatorname{yr}\]
done
clear
C)
\[4.2\times {{10}^{9}}\,\operatorname{yr}\]
done
clear
D)
\[8.2\times {{10}^{9}}\,\operatorname{yr}\]
done
clear
View Answer play_arrow
An ideal gas is taken through the cycle ABCA as shown in the P-V diagram. The total work done by the gas during the cycle is:
A)
pV
done
clear
B)
2pV
done
clear
C)
3pV
done
clear
D)
6Pv
done
clear
View Answer play_arrow
The motion of a particle along a straight line is described by equation x=8+12t-t3, where, x is in meter and t is in second. The retardation of the particle when its velocity becomes zero, is:
A)
\[24 m/{{s}^{2}}\]
done
clear
B)
Zero
done
clear
C)
\[6 m/{{s}^{2}}\]
done
clear
D)
\[12 m/{{s}^{2}}\]
done
clear
View Answer play_arrow
The change in the gravitational potential energy when a body of mass m is raised to a height nR above the surface of the earth is:
A)
\[\frac{n}{n+1}(mgR)\]
done
clear
B)
\[\frac{n}{n-1}(mgR)\]
done
clear
C)
\[nmgR\]
done
clear
D)
\[\frac{(mgR)}{n}\]
done
clear
View Answer play_arrow
A machine which is 75% efficient, uses \[12\mathrm{J}\] of energy in lifting 1Kg mass through a certain distance. The mass is then allowed to fall through the same distance. The velocity at the energy of its fall is:
A)
\[\sqrt{12}\,m/s\]
done
clear
B)
\[\sqrt{18}\,m/s\]
done
clear
C)
\[\sqrt{24}\,m/s\]
done
clear
D)
\[\sqrt{32}\,m/s\]
done
clear
View Answer play_arrow
A closed pipe and an open pipe of same length produce 2 beats, when they are set into vibration simultaneously in their fundamental mode. If the length of the open pipe is halved and that of closed pipe is doubled, and if they are vibrating in the fundamental mode, then the number of beats produced is:
A)
4
done
clear
B)
7
done
clear
C)
2
done
clear
D)
8
done
clear
View Answer play_arrow
A steady current is set up in a metallic wire of non - uniform cross section how is the rate of flow of free electrons related to the 8. A body starts from rest and moves with uniform acceleration. Which of the following graphs represent its motion:
A)
\[\operatorname{K}\propto \,{{\operatorname{A}}^{o}}\]
done
clear
B)
\[\operatorname{K}\propto \,{{\operatorname{A}}^{-1}}\]
done
clear
C)
\[\operatorname{K}\propto \,\operatorname{A}\]
done
clear
D)
\[\operatorname{K}\propto \,{{\operatorname{A}}^{2}}\]
done
clear
View Answer play_arrow
A body starts from rest and moves with uniform acceleration. Which of the following graph represent its motion:
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
The coefficient of performance of a refrigerator is 5. It the temperature inside freezer is \[-20{}^\circ C\], the temperature of the surroundings to which it rejects heat is:
A)
\[11{}^\circ C\]
done
clear
B)
\[21{}^\circ C\]
done
clear
C)
\[31{}^\circ C\]
done
clear
D)
\[41{}^\circ C\]
done
clear
View Answer play_arrow
W. A beam of light of wavelength 600nm from a distant source falls on a single slit 1mm wide and the resulting diffraction pattern is observed on a screen 2m away. The distance between the first dark fringes on either side of the central bright fringe is:
A)
1.2 cm
done
clear
B)
1.2 mm
done
clear
C)
2.4 cm
done
clear
D)
2.4 mm
done
clear
View Answer play_arrow
M. A convex lens of focal length f is placed somewhere in between an object and a screen. The distance between object and screen is x. if numerical value of magnification produced by lens is m, focal length of lens is:
A)
\[\frac{mx}{{{\left( m+1 \right)}^{2}}}\]
done
clear
B)
\[\frac{mx}{{{\left( m-1 \right)}^{2}}}\]
done
clear
C)
\[\frac{{{\left( m+1 \right)}^{2}}}{m}x\]
done
clear
D)
\[\frac{{{\left( m-1 \right)}^{2}}}{m}x\]
done
clear
View Answer play_arrow
A resistor R has power dissipation P with cell voltage E. The resistor is cut in n equal parts and all parts are connected in parallel with same cell. The new power dissipation is:
A)
nP
done
clear
B)
\[{{\operatorname{nP}}^{2}}\]
done
clear
C)
\[{{\operatorname{n}}^{2}}P\]
done
clear
D)
\[\operatorname{n}/P\]
done
clear
View Answer play_arrow
The angle of a prism is 'A'. One of its refracting surfaces is silvered. Light rays falling at an angle of incidence 2A on the first surface returns back through the same path after suffering reflection at the silvered surface. The refractive index u, of the prism is:
A)
2 sin A
done
clear
B)
2 cos A
done
clear
C)
\[\frac{\cos A}{2}\]
done
clear
D)
tan A
done
clear
View Answer play_arrow
The upper half of an inclined plane of inclination 0 is perfectly smooth while lower half is rough. A block starting from rest at the top of the plane will again come to rest at the bottom, if the coefficient of friction between block and lower half of the plane is given by:
A)
\[\mu =\frac{1}{\tan \,\theta }\]
done
clear
B)
\[\mu =\frac{2}{\tan \,\theta }\]
done
clear
C)
\[\mu =\,2\,\tan \,\theta \]
done
clear
D)
\[\mu =\,\,\tan \,\theta \]
done
clear
View Answer play_arrow
A capacitor of capacity\[{{\operatorname{C}}_{1}}\], is charged by connected it across a battery of emf\[{{\operatorname{V}}_{o}}\]. The battery is then removed and the capacitor is connected in parallel with an uncharged capacitor of capacites\[{{\operatorname{C}}_{2}}\]. The potential difference across this combination is
A)
\[\frac{{{C}_{2}}}{{{C}_{1}}+{{C}_{2}}}{{V}_{o}}\]
done
clear
B)
\[\frac{{{C}_{1}}}{{{C}_{1}}+{{C}_{2}}}{{V}_{o}}\]
done
clear
C)
\[\frac{{{C}_{1}}+{{C}_{2}}}{{{C}_{2}}}{{V}_{o}}\]
done
clear
D)
\[\frac{{{C}_{1}}+{{C}_{2}}}{{{C}_{1}}}{{V}_{o}}\]
done
clear
View Answer play_arrow
In an LCR circuit, the potential difference between the terminals of the inductance is 60V, between the terminals of the capacitor is 30V and that across the resistance is 40V. Then, supply voltage will be:
A)
50V
done
clear
B)
70V
done
clear
C)
130V
done
clear
D)
10V
done
clear
View Answer play_arrow
Moment of inertia of a uniform rod of length L and mass M, about an axis passing through L/4 from one end and perpendicular to its length is:
A)
\[\frac{7}{36}{{\operatorname{ML}}^{2}}\]
done
clear
B)
\[\frac{7}{48}{{\operatorname{ML}}^{2}}\]
done
clear
C)
\[\frac{11}{48}{{\operatorname{ML}}^{2}}\]
done
clear
D)
\[\frac{{{\operatorname{ML}}^{2}}}{12}\]
done
clear
View Answer play_arrow
A thermo dynamical system undergo cyclic process ABCDA as shown in figure. Work done by the system is:
A)
Zero
done
clear
B)
\[2{{P}_{0}}{{V}_{0}}\]
done
clear
C)
\[{{P}_{0}}V\]
done
clear
D)
\[\frac{3}{2}{{P}_{0}}{{V}_{0}}\]
done
clear
View Answer play_arrow
A double convex lens made of glass \[\left( \mu =1.5 \right)\] has both radii of curvature of magnitude 20 cm incident rays parallel to the axis of the lens will converge at a distance L such that:
A)
L=20 cm
done
clear
B)
L=10cm
done
clear
C)
L=40 cm
done
clear
D)
\[\operatorname{L}=\frac{20}{3}cm\]
done
clear
View Answer play_arrow
In the circuit shown below what will be the reading of the voltmeter and ammeter?
A)
200V, 1A
done
clear
B)
800V, 2A
done
clear
C)
100V, 2A
done
clear
D)
220V, 2.2A
done
clear
View Answer play_arrow
The figure shows the path of a positively charged particle 1 through a rectangular region of uniform electric field as shown in the figure. What is the direction of electric field and the direction of deflection of particles 1, 2, 3,4?
A)
Top, down, top, down
done
clear
B)
Top, down, down, top
done
clear
C)
Down, top, top, down
done
clear
D)
Down, top, down, down
done
clear
View Answer play_arrow
If a 2Kg mass is rotating on a circular path of radius 0.8m with angular velocity of 44 rad/ sec. If radius of the path becomes 1m, then what will be the value of angular velocity?
A)
28.16 rad/sec
done
clear
B)
19.28 rad/sec
done
clear
C)
8.12 rad/sec
done
clear
D)
35.26 rad/sec
done
clear
View Answer play_arrow
A particle is moving on a circular path of 10 m radius. At any instant of time, its speed is 5 m/s and the speed is increasing at a rate of 2 nVs2. The magnitude of net acceleration at this instant is:
A)
\[5 m/{{s}^{2}}\]
done
clear
B)
\[2 m/{{s}^{2}}\]
done
clear
C)
\[3.2 m/{{s}^{2}}\]
done
clear
D)
\[4.3 m/{{s}^{2}}\]
done
clear
View Answer play_arrow
A liquid wets glass. Its angle of contact with glass is:
A)
Less than\[\frac{\pi }{2}\]
done
clear
B)
\[\frac{\pi }{2}\]
done
clear
C)
\[\frac{3\pi }{2}\]
done
clear
D)
\[\pi \]
done
clear
View Answer play_arrow
Four wires of identical length, diameters and of the same material are stretched on a sonometre wire. If the ratio of their tensions is 1:4 : 9 :16, then the ratio of their fundamental frequencies are:
A)
16:9:4:1
done
clear
B)
4:3:2:1
done
clear
C)
1:4:2:16
done
clear
D)
1:2:3:4
done
clear
View Answer play_arrow
The no. of o and n bonds in allyl isocyanides are:
A)
\[9\sigma ,\,\,3\pi \]
done
clear
B)
\[9\sigma ,\,\,9\pi \]
done
clear
C)
\[3\sigma ,\,\,4\pi \]
done
clear
D)
\[5\sigma ,\,\,7\pi \]
done
clear
View Answer play_arrow
A \[0{}^\circ C\]and one atom pressure, a gas occupies 100cc it the pressure is increased to one and half-lime and temperature is increased by one - third of absolute temperature, then final volume of gas will be:
A)
80c
done
clear
B)
88.9c
done
clear
C)
66.7c
done
clear
D)
100cc
done
clear
View Answer play_arrow
The decreasing order of boiling points of following hybrids is:
(i) \[{{\operatorname{NH}}_{3}}\]
(ii) \[{{\operatorname{PH}}_{3}}\]
(iii) \[{{\operatorname{AsH}}_{3}}\]
(iv) \[{{\operatorname{SbH}}_{3}}\]
(v) \[{{\operatorname{H}}_{2}}0\]
A)
(v) > (iv) > (i) > (iii) > (ii)
done
clear
B)
(v) > (i) > (ii) > (iii) > (iv)
done
clear
C)
(ii) > (iv) > (iii) > (i) > (v)
done
clear
D)
(iv) > (iii) > (i) > (ii) > (v)
done
clear
View Answer play_arrow
An ideal gas expands in volume from \[1\times 1{{0}^{-3}}{{m}^{3}}\,\,\,to\,\,1{{0}^{-2}}{{m}^{3}}\] at 300K against a constant pressure of \[1\times 1{{0}^{5}}N{{m}^{-2}}\]. The work done is:
A)
-900J
done
clear
B)
-900KJ
done
clear
C)
270J
done
clear
D)
900KJ
done
clear
View Answer play_arrow
Which of the following pair of molecules will have permanent dipole moment for both members:
A)
\[{{\operatorname{NO}}_{2}} and C{{O}_{2}}\]
done
clear
B)
\[{{\operatorname{NO}}_{2}} and {{O}_{3}}\]
done
clear
C)
\[{{\operatorname{SiF}}_{2}} and C{{O}_{2}}\]
done
clear
D)
\[{{\operatorname{SiF}}_{4}} and N{{O}_{2}}\]
done
clear
View Answer play_arrow
The number of atoms in 4.25g of \[{{\operatorname{NH}}_{3}}\]is approximately:
A)
\[1\times {{10}^{23}}\]
done
clear
B)
\[2\times {{10}^{23}}\]
done
clear
C)
\[4\times {{10}^{23}}\]
done
clear
D)
\[6\times {{10}^{23}}\]
done
clear
View Answer play_arrow
The correct order of decreasing first ionisation energy is:
A)
C>B>Be>Li
done
clear
B)
C > Be > B > Li
done
clear
C)
B>C>Be>Li
done
clear
D)
Be > Li > B > C
done
clear
View Answer play_arrow
The total number of orbitals in a shell having principle quantum number n is:
A)
2n
done
clear
B)
\[{{\operatorname{n}}^{2}}\]
done
clear
C)
\[2{{n}^{2}}\]
done
clear
D)
n+1
done
clear
View Answer play_arrow
The maximum number of \[90{}^\circ \] angles between bond pair-bond pair of electrons is observed in:
A)
\[{{\operatorname{dsp}}^{3}}\]hybridization
done
clear
B)
\[{{\operatorname{sp}}^{3}}d\]hybridization
done
clear
C)
\[{{\operatorname{dsp}}^{2}}\]hybridization
done
clear
D)
\[{{\operatorname{sp}}^{3}}{{d}^{2}}\]hybridization
done
clear
View Answer play_arrow
The orbital diagram in which the Aufbau principle is violated is:
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
High concentration of fluoride is poisonous and harmful to bones and teeth at levels over:
A)
1ppm
done
clear
B)
3ppm
done
clear
C)
5ppm
done
clear
D)
10ppm
done
clear
View Answer play_arrow
The compounds of alkaline earth metals have the following magnetic nature:
A)
Diamagnetic
done
clear
B)
Paramagnetic
done
clear
C)
Ferromagnetic
done
clear
D)
Antiferromagnetic
done
clear
View Answer play_arrow
Heating an aqueous solution of aluminum chloride to dryness will give:
A)
\[{{\operatorname{AlCl}}_{3}}\]
done
clear
B)
\[{{\operatorname{Al}}_{2}}C{{l}_{6}}\]
done
clear
C)
\[{{\operatorname{Al}}_{2}}{{O}_{3}}\]
done
clear
D)
\[\operatorname{Al}(OH)C{{l}_{2}}\]
done
clear
View Answer play_arrow
The highest boiling point is expected for:
A)
Iso-octane
done
clear
B)
n - octane
done
clear
C)
2, 2, 3, 3 - tetramethylbutane
done
clear
D)
n - butane
done
clear
View Answer play_arrow
A compound x\[\left( {{C}_{5}}{{H}_{8}} \right)\] reacts with ammonical \[{{\operatorname{AgNO}}_{3}}\]to give a white precipitate, and an oxidation with hot alkaline \[{{\operatorname{KMnO}}_{4}}\]gives the acid, \[{{(C{{H}_{3}})}_{2}}\]CHCOOH. Therefore X is:
A)
\[{{\operatorname{CH}}_{2}}=CHCH=CHC{{H}_{3}}\]
done
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B)
\[C{{H}_{3}}{{\left( C{{H}_{2}} \right)}_{2}}C=CH\]
done
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C)
\[{{\left( C{{H}_{3}} \right)}_{2}}CH-C=C{{H}_{2}}\]
done
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D)
\[{{\left( C{{H}_{2}} \right)}_{2}}CH-C=CH\]
done
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View Answer play_arrow
For the reaction \[{{\operatorname{H}}_{2}}\left( g \right)+{{I}_{2}} \left( g \right)\rightleftharpoons 2HI\left( g \right)\], the equilibrium constant \[{{\operatorname{K}}_{P}}\]changes with:
A)
Temperature
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B)
Total pressure
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C)
Catalyst
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D)
Amount of K, and I,
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View Answer play_arrow
\[{{\operatorname{K}}_{P}}\]for reaction:
\[3Fe\left( s \right)+4{{H}_{2}}O\left( g \right).=F{{e}_{3}}{{O}_{4}}, \left( s \right)+4{{H}_{2}} \left( g \right)\]is equal:
A)
\[{{\left( P{{H}_{2}} \right)}^{4}}\left( PE{{e}_{3}}{{O}_{4}} \right)\]
done
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B)
\[\frac{P{{H}_{2}}}{P{{H}_{2}}O}\]
done
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C)
\[\frac{{{\left( P{{H}_{2}} \right)}^{4}}}{{{\left( P{{H}_{2}}O \right)}^{4}}}\]
done
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D)
\[\frac{\left( P{{H}_{2}} \right)\left( P\,F{{e}_{3}}\,{{O}_{4}} \right)}{P\,Fe}\]
done
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View Answer play_arrow
The oxidation state of chromium in Cr(CO) is:
A)
0
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B)
+2
done
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C)
-2
done
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D)
+6
done
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View Answer play_arrow
2 - Acetoxybenzoic acid is called:
A)
Antiseptic
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B)
Aspirin
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C)
Antibiotic
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D)
Mordant dye
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View Answer play_arrow
Which is not a polymer?
A)
Sucrose
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B)
Enzyme
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C)
Starch
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D)
Teflon
done
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View Answer play_arrow
Complete hydrolysis of cellulose gives:
A)
L - glucose
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B)
D - fructose
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C)
D - ribose
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D)
D - glucose
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View Answer play_arrow
Among the following, weakest base is:
A)
\[{{\operatorname{H}}_{2}}{{C}_{6}}{{H}_{5}}CN{{H}_{2}}\]
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B)
\[{{\operatorname{C}}_{6}}{{H}_{5}}C{{H}_{2}}NHC{{H}_{3}}\]
done
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C)
\[{{\operatorname{O}}_{2}}N-C{{H}_{2}}N{{H}_{2}}\]
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D)
\[{{\operatorname{CH}}_{3}}NHCHO\]
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View Answer play_arrow
Strongest base among the following is:
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
The liquefied metal expanding on solidification is:
A)
Ga
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B)
Al
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C)
Zn
done
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D)
Cu
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View Answer play_arrow
The crystal system of a compound with unit cell dimensions a = 0.387nm, b = 0.387nm, and c = 0.504 nm and \[\alpha =\beta =90{}^\circ and \gamma =120{}^\circ \]is:
A)
Cubic
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B)
Hexagonal
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C)
Orthorhombic
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D)
Rhombohedral
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View Answer play_arrow
When ethylamine is treated with \[C{{H}_{3}}MgBr,\]the product is:
A)
\[C{{H}_{3}}C{{H}_{3}}\]
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B)
\[C{{H}_{4}}\]
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C)
\[C{{H}_{3}}H{{C}_{2}}C{{H}_{3}}\]
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D)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\]
done
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View Answer play_arrow
A 5% solution of cane sugar (mol. wt. = 342) is isotonic with 1% solution of substance X. the molecular weight of X is:
A)
34.2
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B)
171.2
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C)
68.4
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D)
136.8
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View Answer play_arrow
In the following reaction, X is:
A)
Benzoic acid
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B)
Salicylic acid
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C)
Phenol
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D)
Aniline
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View Answer play_arrow
Camphor is often used in molecular mass determination because:
A)
It is readily available
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B)
It has very high cryoscopic constant
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C)
It is volatile
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D)
It is solvent for organic substances
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View Answer play_arrow
Standard electrode potentials are:
\[F{{e}^{2+}}/Fe\] \[E{}^\circ =-0.44V\] \[F{{e}^{3+}}/F{{e}^{2+}}\], \[E{}^\circ =+0.77V\] \[F{{e}^{2+}},F{{e}^{3+}}\]and Fe bloks are kept together, then:
A)
\[F{{e}^{3+}}increases\]
done
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B)
\[F{{e}^{3+}}decreases\]
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C)
\[F{{e}^{2+}}/F{{e}^{3+}}remains\text{ }unchanged\]
done
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D)
\[F{{e}^{2+}}\ decreases\]
done
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View Answer play_arrow
Product of the 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
The half life of a reaction is halved as the initial concentration of the reactant is doubled. The order of reaction is:
A)
0.5
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B)
1
done
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C)
2
done
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D)
O
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View Answer play_arrow
Colloidal silver is obtained by reduction of silver nitrate \[\left( AgN{{O}_{3}} \right)\] with:
A)
Acetic acid
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B)
Glucose
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C)
Molecular hydrogen
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D)
Fructose
done
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View Answer play_arrow
The rate constant K, for the reaction \[{{N}_{2}}{{O}_{5}}\text{ }\left( g \right)\to 2N{{O}_{2}}\left( g \right)+~{{0}_{2}}\left( g \right)\text{ }is\text{ }1.2\times l{{0}^{-2}}\text{ }{{S}^{-1}}.\]Which equation given below describes the change of \[\left[ {{N}_{2}}{{O}_{5}} \right]\] with time? \[{{\left[ {{N}_{2}}{{O}_{5}} \right]}_{0}}\] and \[{{\left[ {{N}_{2}}{{O}_{5}} \right]}_{t}}\] correspond to the concentration of \[{{N}_{2}}{{O}_{5}}\]cinitially and at time t:
A)
\[{{\left[ {{N}_{2}}{{O}_{5}} \right]}_{t}}={{\left[ {{N}_{2}}{{O}_{5}} \right]}_{0}}+kt\]
done
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B)
\[\left[ {{N}_{2}}{{O}_{5}} \right]o={{\left[ {{N}_{2}}{{O}_{5}} \right]}_{t}}{{e}^{kt}}\]
done
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C)
\[log{{\left[ {{N}_{2}}{{O}_{5}} \right]}_{t}}=log{{\left[ {{N}_{2}}{{O}_{5}} \right]}_{o}}+kt\]
done
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D)
\[In\,\,\frac{{{\left[ {{N}_{2}}{{O}_{5}} \right]}_{o}}}{{{\left[ {{N}_{2}}{{O}_{5}} \right]}_{t}}}=kt\]
done
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View Answer play_arrow
Smelting involve reduction of metal oxide with:
A)
Carbon
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B)
Carbon monoxide
done
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C)
Magnesium
done
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D)
Aluminium
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View Answer play_arrow
The compound which has molecular nature in gas phase but ionic in solid state is:
A)
\[~PC{{l}_{5}}\]
done
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B)
\[CC{{I}_{4}}\]
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C)
\[PC{{l}_{3}}\]
done
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D)
\[POC{{l}_{3}}\]
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View Answer play_arrow
Which of the following does not have optical isomer?
A)
\[\left[ Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}} \right]\]
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B)
\[\left[ Co{{\left( en \right)}_{3}} \right]C{{l}_{3}}\]
done
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C)
\[\left[ Co{{\left( en \right)}_{2}}C{{l}_{2}} \right]Cl\]
done
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D)
\[\left[ Co\left( en \right){{\left( N{{H}_{3}} \right)}_{2}}C{{l}_{2}} \right]Cl\]
done
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View Answer play_arrow
In which of following pairs, the two species are isostructural?
A)
\[BrO\overline{_{3}}\text{ }and\text{ }Xe{{O}_{3}}\]
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B)
\[S{{F}_{4}}\text{ }and\text{ }Xe{{F}_{4}}\]
done
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C)
\[S{{O}^{2-}}_{\text{3}}and\text{ }NO\overline{_{3}}\]
done
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D)
\[B{{F}_{3}}\text{ }and\text{ }N{{F}_{3}}\]
done
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View Answer play_arrow
The correct structure of Fe(CO),; is:
A)
Octahedral
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B)
Tetrahedral
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C)
Square pyramidal
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D)
Trigonal bipyramidal
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View Answer play_arrow
1-Chlorobutane on reaction with alcoholic potash gives:
A)
1 - Butene
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B)
1 - Butanol
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C)
2-Butene
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D)
2-Butanol
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View Answer play_arrow
The compound used for gravimetric estimation of Cu(II) is:
A)
\[C{{u}_{2}}{{\left( SCN \right)}_{2}}\]
done
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B)
Cup
done
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C)
\[C{{u}_{2}}{{I}_{2}}\]
done
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D)
\[C{{u}_{2}}C{{O}_{3}}\]
done
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View Answer play_arrow
The dipole moment is the highest for:
A)
Trans-2-butene
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B)
2-dimethyl benzene
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C)
Acetophenone
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D)
Ethanol
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View Answer play_arrow
The compound X is:
A)
\[CC{{I}_{4}}\]
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B)
\[C{{o}_{2}}\]
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C)
\[C{{H}_{3}}OH\]
done
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D)
Co
done
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View Answer play_arrow
Which is correct?
A)
Reduction of any aldehyde gives secondary alchol
done
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B)
Reaction of vegetable oil with \[{{H}_{2}}S{{O}_{4}}\]gives glycerine
done
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C)
Alcholic iodine with NaOH gives iodoform
done
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D)
Surcose on reaction with NaCI gives invert sugar
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View Answer play_arrow
One mole of an ideal gas at 300K is expanded isothermally from an initial velume of Il to 10l. The AE for the process \[\left( R=2\text{ }cal\text{ }mo{{l}^{-1}}\text{ }{{K}^{-1}} \right)\]
A)
163.7 cal
done
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B)
Zero
done
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C)
1381.1 cal
done
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D)
9 lit atm
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View Answer play_arrow
The term species was given by:
A)
Aristotle
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B)
Darwin
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C)
Hugo de vries
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D)
John ray
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View Answer play_arrow
R.H. Whittaker proposed a five kingdom classification in:
A)
1968
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B)
1979
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C)
1969
done
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D)
1959
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View Answer play_arrow
Biogas is produced by:
A)
Eubacteria
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B)
Archaebacteria
done
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C)
Mycoplasma
done
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D)
None of these
done
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View Answer play_arrow
Common phylum of unicellular animals and plants is:
A)
Protista
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B)
Plantae
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C)
Fungi
done
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D)
Monera
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View Answer play_arrow
Member of rhodophyceae are red in colour due to pigment:
A)
Fucoxanthin
done
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B)
r-phycoerythrin
done
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C)
Chlorophyll
done
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D)
Anthocyanin
done
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View Answer play_arrow
Sporangia bearing leaves in pteridophytes are called:
A)
Indusium
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B)
Sort
done
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C)
Ramenta
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D)
Sporophylls
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View Answer play_arrow
Haplontic life cycle involved in:
A)
Volvox
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B)
Mustard
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C)
Bryophytes
done
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D)
Eucalyptus
done
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View Answer play_arrow
Radial symmetry occurs in:
A)
Molluscs
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B)
Tapeworm
done
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C)
Starfish
done
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D)
Annelida
done
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View Answer play_arrow
Drones are formed in Honey-Bee by:
A)
Fasting Larvae
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B)
Fertilized eggs
done
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C)
Unfertilised egg
done
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D)
None of these
done
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View Answer play_arrow
Actinomorphic flowers are found in:
A)
Pea
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B)
Mustard
done
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C)
Bean
done
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D)
Cassia
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View Answer play_arrow
Water and turgid are absorbed in grasses by:
A)
Mesophyll
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B)
Bundle sheath cells
done
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C)
Bulliform cells
done
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D)
Epidermis
done
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View Answer play_arrow
Nucleus is absent in:
A)
WBCs
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B)
RBCs
done
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C)
Macrophage
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D)
Monocytes
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View Answer play_arrow
In animal cells lipid like steroidal hormones are synthesised in:
A)
RER
done
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B)
SER
done
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C)
Golgi apparatus
done
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D)
Cell-wall
done
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View Answer play_arrow
Floral formula of tomato is:
A)
done
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B)
done
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C)
done
clear
D)
done
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View Answer play_arrow
Which one of the following structure formulae of two organic compounds is correctly identified along with its related function:
A)
Triglyceride: Major source of Energy
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B)
Adenine: Nitrogen base of DNA
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C)
Glycerol: Components of alcohol
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D)
Uracil: Components of DNA
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View Answer play_arrow
Alternate phyllotaxy observed in:
A)
Mustard
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B)
Calotropis
done
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C)
Alstonia
done
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D)
Guava plants
done
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View Answer play_arrow
Centromeres split and chromatids separate in:
A)
Metaphase
done
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B)
Anaphase
done
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C)
Telophase
done
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D)
Prophase
done
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View Answer play_arrow
Opening and closing of the stomata caused by:
A)
Bulliform cells
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B)
Epidermis
done
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C)
Guard cell
done
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D)
Mesophyll
done
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View Answer play_arrow
Which force does a plant use to move water molecule into the leaf parenchyma cell:
A)
Root pressure
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B)
Diffusion
done
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C)
Transpiration pull
done
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D)
Osmosis
done
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View Answer play_arrow
How many carbon atom present in PGA:
A)
3
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B)
4
done
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C)
5
done
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D)
2
done
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View Answer play_arrow
Vegetative propagules in water hyancinth are:
A)
Bulbil
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B)
Eye buds
done
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C)
Root
done
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D)
Offset
done
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View Answer play_arrow
Ovule: embryo sac: Anther:
A)
Androceium
done
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B)
Pollen grain
done
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C)
Stamen
done
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D)
Pistil
done
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View Answer play_arrow
Seminal plasma rich in:
A)
Glucose
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B)
Sucrose
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C)
Fructose
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D)
Galactose
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View Answer play_arrow
Closest part of the ovary is:
A)
Ampulla
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B)
Isthmus
done
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C)
Fimbriae
done
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D)
Fundus
done
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View Answer play_arrow
The function of leg haemoglobin in the root nodules of legume is:
A)
Oxygen removal
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B)
Oxidise ammonia to nitrate
done
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C)
Convert nitrogen to nitrogen compound
done
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D)
Convert proteins into ammonia
done
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View Answer play_arrow
What is leg-Haemoglobin:
A)
Inhibition of nitrogenase activity
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B)
Oxygen scavenger
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C)
Nodule differentiation
done
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D)
Expression of nit gene
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View Answer play_arrow
The ovary is half - inferior in flowers of:
A)
Rose
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B)
Guava
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C)
Cucumber
done
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D)
Mustard
done
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View Answer play_arrow
Which organism contain 8 chromosomes in meiocyte (2n):
A)
Dog
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B)
Rice
done
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C)
Fruit fly
done
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D)
Cat
done
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View Answer play_arrow
Pollen grains are well reserved as fossils because of:
A)
Exine
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B)
Intine
done
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C)
Sporopollenin
done
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D)
Chitin
done
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View Answer play_arrow
Each trophic level has a certain mass of living material at a particular time called as:
A)
Standing crop
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B)
Detritus
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C)
Decomposers
done
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D)
Saprotrophs
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View Answer play_arrow
Name the mixture which is mixed with bitumen to lay roads:
A)
Plastic
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B)
Polyblend
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C)
Nylon 6,6
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D)
Charcoal
done
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View Answer play_arrow
The sewage water is treated till the B, O.D is:
A)
Increase
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B)
Reduce
done
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C)
Remain same
done
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D)
Oxidised
done
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View Answer play_arrow
The prime contaminants of cultural is:
A)
Nitrate and phosphate
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B)
Mercury
done
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C)
Lead
done
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D)
Nitrate and Sulphate
done
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View Answer play_arrow
Which forest has greatest diversity on earth:
A)
Temperate forest
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B)
Tropical forest
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C)
Coniferous forest
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D)
Arctic and Alpine tundra
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View Answer play_arrow
Which one of the following expanded forms of the following acronyms is correct?
A)
IUCN \[\to \] Internation Union Code for Bo- tanical Nomenclature
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B)
AIDS \[\to \] Acquired Immuno Deficiency Viroids
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C)
ELISA \[\to \] Enzyme Linked Immuno Sorbent Assay
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D)
UNEP \[\to \] United Nations Environment Policy
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View Answer play_arrow
Which one of the following is a condition of primary succession:
A)
It begins on a bare rock
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B)
It occurs on a deforested site
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C)
It follows secondary succession
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D)
It is relatively faster process than second- ary succession
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View Answer play_arrow
Which crop is resistance to leaf and stripe rust hill bunt:
A)
Brassica
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B)
Cauliflower
done
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C)
Wheat
done
clear
D)
Cow pea
done
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View Answer play_arrow
Which one of the following is not a biofertilizer:
A)
Rhizobium
done
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B)
Nostoc
done
clear
C)
Agrobacterium
done
clear
D)
Mycorrhiza
done
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View Answer play_arrow
Agaros gel used in:
A)
PCR
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B)
Tissue culture
done
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C)
Gelelectrophoresis
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D)
Northern blotting
done
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View Answer play_arrow
The first transgenic cow name is:
A)
Dolly
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B)
Rosie
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C)
Roumy
done
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D)
None of these
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View Answer play_arrow
Bt toxin genes were isolated from:
A)
Agrobacterium
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B)
Bacillus thuringiensis
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C)
Nematode
done
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D)
Fungi
done
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View Answer play_arrow
Sonalika & Kalyan sona are hybrid variety of:
A)
Rice
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B)
Wheat
done
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C)
Maize
done
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D)
Sugarcane
done
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View Answer play_arrow
Which one of the following organism is not an example of eukaryotic cells:
A)
Euglena
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B)
E-coli
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C)
Amoeba
done
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D)
Parmecium
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View Answer play_arrow
Which one of the following animals is correctly matched with it particular named taxonomic category:
A)
Human \[\to \] sapiens, the species
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B)
Cuttlefish \[\to \] Mollusca, a class
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C)
Lion \[\to \] tigris, the species
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D)
Housefly \[\to \] Domestica, the order
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View Answer play_arrow
Which cells occur in fallopian tubes and bronchioles?
A)
Ciliated columnar cell
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B)
Simple squamous cell
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C)
Glandular cell
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D)
Blood cell
done
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View Answer play_arrow
Most significant trend in evolution of modern man:
A)
Upright posture
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B)
Brain capacity
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C)
Shortening of jaws
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D)
Binocular vision
done
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View Answer play_arrow
Maximum number of genes are found in:
A)
Y- Chromosome
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B)
Chromosome - 1
done
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C)
X - Chromosome
done
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D)
Chromosome - 2
done
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View Answer play_arrow
Human blood group is an example of:
A)
Incomplete dominance
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B)
Codominance
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C)
Independent assortement
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D)
Dominance
done
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View Answer play_arrow
Basic amino acid found in histones is:
A)
Lysines
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B)
Valine
done
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C)
Glutamic acid
done
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D)
Histidine
done
clear
View Answer play_arrow
Purkinje fibre present in:
A)
Brain
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B)
Spleen
done
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C)
Heart
done
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D)
Liver
done
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View Answer play_arrow
Organ of corti present in cochlea is a charactristics of:
A)
Eye
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B)
Ear
done
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C)
Nose
done
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D)
Liver
done
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View Answer play_arrow
YelIowish pigmented spot called macula lutea with a central pit called:
A)
Cornea
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B)
Pupil
done
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C)
Fovea
done
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D)
Blind spot
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View Answer play_arrow
____ is a fibrous, non-globular protein involved in the clotting of blood:
A)
Thrombin
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B)
Albumin
done
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C)
Globulin
done
clear
D)
Fibrin
done
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Uricotelic mode of passing out nitrogenous wastes found in:
A)
Birds and annelids
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B)
Reptiles and birds
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C)
Amphibians
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D)
Insects and amphibians
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Most widely accepted method for contraception in India:
A)
Tubectomy
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B)
Cervical caps
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C)
IDUs
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D)
Diaphragms
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Medical termination of pregnancy is considered safe upto how many weeks:
A)
Six weeks
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B)
Ten weeks
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C)
Twelve weeks
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D)
Eighteen weeks
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Which type of human population is represented by the followingpyramis:
A)
Expanding population
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B)
Declining population
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C)
Stable population
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D)
Expansive population
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Cyclosporin A, that is used as an immune suppressive agent in organ transplant patient, is produced by:
A)
Fungus
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B)
Bacteria
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C)
Protozoa
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D)
Yeast
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Which one of the following pair of gases are the major cause of 'Greenhouse effect':
A)
\[C{{O}_{2}}\And {{\text{O}}_{2}}\]
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B)
\[C{{O}_{2}}\And {{\text{O}}_{4}}\]
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C)
\[CFCs\And \,\,S{{\text{O}}_{2}}\]
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D)
\[C{{O}_{2}}\,\,\And CO\]
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A certain patient is suspected to be suffering from intestinal perforation. Which diagnostic technique will you recommend for its detection:
A)
ELISA
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B)
Ultrasound
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C)
WIDAL
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D)
MRI
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When two unrelated individuals or linea are crossed the performance of\[{{F}_{1}}\]hybrid is often superior to both its parents this is called:
A)
Spheing
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B)
Transformation
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C)
Heterosis
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D)
Inbreeding
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The yellowish fluid colostrum contain abundant antibodies i.e.:
A)
IgM
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B)
IgE
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C)
IgA
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D)
IgD
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EcoRl comes from
A)
Escherichia coli RY12
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B)
Escherichia coli RY13
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C)
Escherichia coli RY14
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D)
Escherichia coli RY2
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An organism used as biofertilizer for raising soyabean crop is:
A)
Nostoc
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B)
Rhizobium
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C)
Azotobacter
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D)
Azospirillum
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Symptoms of AIDS can be seen when:
A)
No. of \[{{T}_{H}}\]cell increases
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B)
No. of \[{{T}_{C}}\] cell decreases
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C)
No. of \[{{T}_{H}}\] cell decreases
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D)
No. of \[{{T}_{C}}\] cell Increases
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The government of India introduced the concept of Joint Forest Management (JFM) in which year:
A)
1970
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B)
1980
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C)
1960
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D)
1985
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Parbhani kranti is a new variety of:
A)
Rice
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B)
Bhindi
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C)
Wheat
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D)
Maize
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Drugs that are normally used as medicine to help patients cope with mental illness are:
A)
Lysergic acid diethylamide
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B)
Morphine
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C)
Cocaine
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D)
Cannabinoids
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Which peptide is not present in mature insulin:
A)
A -peptide
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B)
B -peptide
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C)
C -peptide
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D)
Both a & b
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Light saturation occurs at:
A)
10% of the full sunlight
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B)
5 % of the full sunlight
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C)
8% of the full sunlight
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D)
15% of the full sunlight
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Chief pigment associated with photosynthesis is:
A)
Xanthophylls
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B)
Carotenoids
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C)
Chlorophylla
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D)
Chlorophyll
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Bombay phenotype is a characteristics of:
A)
Blood group
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B)
Dominance
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C)
Incomplete dominance
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D)
Huntington disorder
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Growth activities of plants is inhibited by which plant growth regulators:
A)
Auxin
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B)
Gibberellins
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C)
Cytokiniri
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D)
Ethylene
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Ringworms is caused by:
A)
Ascaris
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B)
W, malayi
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C)
Epidermophyton
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D)
Entamoeba histolytica
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Red rot of sugarcane caused by:
A)
Bacteria
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B)
Viruses
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C)
Fungi
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D)
Worms
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Who discovered the vaccine for Small Pox:
A)
Louis pasteur
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B)
Roentgen
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C)
Alexander
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D)
Edward
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The first clinical gene therapy was given in:
A)
1980
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B)
1970
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C)
1960
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D)
1990
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Find a & b in the following figure:
A)
b - conformer, a - regulator
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B)
a - conformer, b - regulator
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C)
a - conformer, b - suspensor
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D)
b - conformer, a - suspensor
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Which type of interaction found in Cusucta and hedge plants:
A)
Mutualism
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B)
Commensalism
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C)
Amensalism
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D)
Parasitism
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Excessive growth of planktonic algae is called:
A)
Eutrophication
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B)
Accelerated Eutrophication
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C)
Algal bloom
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D)
Biomagnification
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Relative contribution of various greenhouse gases to total global warming:
A)
\[a~\to C{{O}_{2}},\text{ }b\to \text{ }Methane,\text{ }c\to CFCs,\text{ }d\to \]\[{{N}_{2}}O\]
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B)
\[a\to C{{H}_{4}},b\to C{{O}_{2}},c\to {{N}_{2}}0,\,\,d\to CFCs\]
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C)
\[a\to CFCs,\text{ }b\to C{{O}_{2}},\text{ }c\to C{{O}_{2}},\text{ }d\to {{N}_{2}}0\]
done
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D)
\[a\to {{N}_{2}}0,\text{ }b\to CFCs,\text{ }c\to C{{H}_{2}},\text{ }d\to C{{O}_{2}}\]
done
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Blood - cholesterol lowering agents are:
A)
Trichoderma polysporum
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B)
SaccHaromyces cerevisiae
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C)
Penicillium notatum
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D)
Monascus purpureus
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The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is:
A)
Quinone
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B)
Cytochrome
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C)
Ferredpxin
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D)
Iron-sulphur protein
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Our lungs remove large amount of CO which is:
A)
20 Litres/day
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B)
24 Litres/day
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C)
15 Litres/day
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D)
18 Litres/day
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Muscle contraction is initiated by a signal sent by:
A)
[A] N.S via sensory neuron
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B)
[C] N.S vis sensory neuron
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C)
[A] N.S via motor neuron
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D)
[C] N.S via motro neuron
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Vasopressin acts mainly at the:
A)
Heart
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B)
Liver
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C)
Lungs
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D)
Kidney
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Among the human ancestors the brain size was more than 1000 cc in:
A)
Ramapithecus
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B)
Homo habilis
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C)
Homo erectus
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D)
Homo neanderthalensis
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Which one of the following elements is not an essential micronutrient for plant growth:
A)
Ca
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B)
Zn
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C)
Cl
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D)
Ni
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What is common to whale seal and shark:
A)
Homeothermic
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B)
Seasonal migration
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C)
Convergent evolution
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D)
Thick subcutaneous fat
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Probiotics are:
A)
Safe antibiotics
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B)
Live microbial food supplement
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C)
Cancer inducing microbes
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D)
New kind of food allergens
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