Light falling on metallic surface of work function 2eV is given by \[B\text{ }=\text{ }100\text{ }\left[ sin\text{ }\left( 5\text{ }\times \text{ }{{10}^{15}} \right)\text{ }t\text{ }+\text{ }cos\text{ }\left( 8\text{ }\times \text{ }{{10}^{15}} \right)t \right]\]Then maximum kinetic energy of the photoelectrons is-
A)
1.6 Ev
done
clear
B)
2.4 eV
done
clear
C)
2.8eV
done
clear
D)
3.38eV
done
clear
View Answer play_arrow
An \[\alpha \]-particle and a deutron are moving with velocities v and 2v respectively. What will be the ratio of their de-Broglie wavelengths?
A)
1:1
done
clear
B)
\[\sqrt{2}:1\]
done
clear
C)
\[1:\text{ }\sqrt{2}\]
done
clear
D)
2:1
done
clear
View Answer play_arrow
A nucleus ruptures into two nuclear parts which have their velocity ratio equal to 2 : 1. What will be the ratio of their nuclear sizes?
A)
\[{{2}^{1/3}}\,:1\]
done
clear
B)
\[1:{{2}^{1/3}}\]
done
clear
C)
\[{{3}^{1/2}}:\text{ }1\]
done
clear
D)
\[1\text{ }:\text{ }{{3}^{1/2}}\]
done
clear
View Answer play_arrow
Two radioactive samples have decay constant 15 x and 3 x. If they have the same number of nuclei initially, the ratio of number of nuclei after a time \[\frac{1}{6x}\] is -
A)
\[\frac{1}{e}\]
done
clear
B)
\[\frac{e}{2}\]
done
clear
C)
\[\frac{1}{{{e}^{4}}}\]
done
clear
D)
\[\frac{1}{{{e}^{2}}}\]
done
clear
View Answer play_arrow
In a common emitter amplifier, using output resistance of 5000 ohm and input resistance of 2000 ohm, if the input signal voltage is 10 mV and\[P\text{ }=\text{ }50\], calculate output voltage & power gain
A)
1.25V, 6250
done
clear
B)
3V, 6250
done
clear
C)
1.5V, 3050
done
clear
D)
None of these
done
clear
View Answer play_arrow
An ideal mono-atomic gas undergoes a cyclic process ABCA as shown in the figure. The ratio of heat absorbed during AB to the work done on the gas during BC is -
A)
\[\frac{5}{2\,In\,2}\]
done
clear
B)
\[\frac{5}{3}\]
done
clear
C)
\[\frac{5}{4\,In\,2}\]
done
clear
D)
\[\frac{5}{6}\]
done
clear
View Answer play_arrow
An ideal gas is taken through the cycle\[A\to B\to C\to A\], as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process \[C\to A\]
A)
-5 J
done
clear
B)
-10 J
done
clear
C)
-15 J
done
clear
D)
-20 J
done
clear
View Answer play_arrow
Assuming the Sun to have a spherical outer surface of radius r radiating like a black body at temperature\[t{}^\circ C\], the power received by a unit surface, (normal to the incident rays) at a distance R from the centre of the Sun is. (\[\sigma \]is Stefan constant) -
A)
\[\frac{4\pi {{r}^{2}}{{\sigma }^{4}}}{{{R}^{2}}}\]
done
clear
B)
\[\frac{{{r}^{2}}\sigma {{(t+273)}^{4}}}{4\pi {{R}^{2}}}\]
done
clear
C)
\[\frac{16{{\pi }^{2}}{{r}^{2}}\sigma t}{{{R}^{2}}}\]
done
clear
D)
\[\frac{{{r}^{2}}\sigma {{(t+273)}^{4}}}{{{R}^{2}}}\]
done
clear
View Answer play_arrow
Six identical conducting rods are joined as shown in figure. Points A and D are maintained at temperatures \[200{}^\circ C\] and \[20{}^\circ \text{ }C\] respectively. The temperature of junction B will be -
A)
\[120{}^\circ C\]
done
clear
B)
\[100{}^\circ C\]
done
clear
C)
\[140{}^\circ C\]
done
clear
D)
\[\text{ }80{}^\circ C\]
done
clear
View Answer play_arrow
A closed organ pipe has length '\[\ell \]'. The air in it is vibrating in 3rd overtone with maximum amplitude 'a'. The amplitude at a distance off in from closed end of the pipe is equal to -
A)
a
done
clear
B)
\[\frac{a}{2}\]
done
clear
C)
\[\frac{a\sqrt{3}}{2}\]
done
clear
D)
zero
done
clear
View Answer play_arrow
The speed of propagation of a wave in a medium is 300\[m{{s}^{-1}}\]. The equation of motion of point at \[x\text{ }=\text{ }0\] is given by \[y=0.04\] sin \[600\pi t\] (metre). The displacement of a point \[x=75\] cm at \[t\text{ }=\text{ }0.01\] s is-
A)
0.02 m
done
clear
B)
0.04 m
done
clear
C)
Zero
done
clear
D)
0.028 m
done
clear
View Answer play_arrow
Two identical sonometer wires have fundamental frequencies of 500 Hz, when kept under the same tension. What fractional increase in tension of one wire would cause an Occurrence of 5 beats per sec. When both wires vibrate together -
A)
1.020
done
clear
B)
0.020
done
clear
C)
1.20
done
clear
D)
0.20
done
clear
View Answer play_arrow
Two whistles A and B produce notes of frequencies 660 Hz and 596 Hz, respectively. There is a listener at the midpoint of the line joining them. Both the whistle B and the listener start moving with speed 30 m/s away from whistle A. If the speed of sound is 330 m/s, how many beats will be heard by the listener?
A)
2
done
clear
B)
4
done
clear
C)
6
done
clear
D)
8
done
clear
View Answer play_arrow
A body is displaced from \[\left( 0,\text{ }0 \right)\text{ }to\text{ }\left( 1\text{ }m,\text{ }1\text{ }m \right)\]along the path \[x\text{ }=\text{ }y\] by a force\[\overrightarrow{F}=\left( {{x}^{2}}\widehat{j}+\text{ }y \right)N\]. The work done by this force will be -
A)
\[\frac{4}{3}J\]
done
clear
B)
\[\frac{5}{6}J\]
done
clear
C)
\[\frac{3}{2}J\]
done
clear
D)
\[\frac{7}{5}J\]
done
clear
View Answer play_arrow
A person with a mass of M kg stands in contact against the wall of the cylindrical drum of radius r rotating with an angular velocity co. The coefficient of friction between the wall and the clothing is\[\mu \]. The minimum rotational speed of the cylinder which enables the person to remain stuck to the wall when the floor is suddenly removed is -
A)
\[{{\omega }_{\min }}=\sqrt{\frac{g}{\mu r}}\]
done
clear
B)
\[{{\omega }_{\min }}=\sqrt{\frac{\mu r}{g}}\]
done
clear
C)
\[{{\omega }_{\min }}=\sqrt{\frac{2g}{\mu r}}\]
done
clear
D)
\[{{\omega }_{\min }}=\sqrt{\frac{gr}{\mu }}\]
done
clear
View Answer play_arrow
A ball of mass m approaches a wall of mass \[M\text{ }\left( >>m \right)\] with speed 4 m/s along the normal to the wall. The speed of wall is 1 m/s towards the ball. The speed of the ball after an elastic collision with the wall is -
A)
5 m/s away from the wall
done
clear
B)
9 m/s away from the wall
done
clear
C)
3 m/s away from the wall
done
clear
D)
6 m/s away from the wall
done
clear
View Answer play_arrow
A body of radius R and mass m is rolling horizontally without slipping with speed v. It then rolls up a hill to a maximum height\[h=\frac{3{{v}^{2}}}{4g}\]. The body might be a -
A)
solid sphere
done
clear
B)
hollow sphere
done
clear
C)
disc
done
clear
D)
ring
done
clear
View Answer play_arrow
A body is projected up with a velocity equal to 3/4th of the escape velocity from the surface of the earth. The height it reaches from the centre of the earth is: (Radius of the earth = R):
A)
\[\frac{10R}{9}\]
done
clear
B)
\[\frac{9\,R}{7}\]
done
clear
C)
\[\frac{9\,R}{8}\]
done
clear
D)
\[\frac{10\,R}{3}\]
done
clear
View Answer play_arrow
A particle executes SHM of amplitude 5 cm and period 3s. The velocity of the particle at a distance 4 cm from the mean position-
A)
8 cm/s
done
clear
B)
12 cm/s
done
clear
C)
4 cm/s
done
clear
D)
6 m/s
done
clear
View Answer play_arrow
A soap bubble of radius r is blown upto form a bubble of radius 2r under isothermal conditions. If T is the surface tension of soap solution, the energy spent in the blowing is -
A)
\[3\pi T{{r}^{2}}\,joule\]
done
clear
B)
\[6\pi T{{r}^{2}}\,joule\]
done
clear
C)
\[12\pi T{{r}^{2}}\,joule\]
done
clear
D)
\[24\pi T{{r}^{2}}\,joule\]
done
clear
View Answer play_arrow
One end of an elastic string is attached to a block of mass m and the other end is held keeping the string relaxed and vertical. Relaxed length of the string is \[{{\ell }_{0}}\] and there is a mark P at height 0.8 \[{{\ell }_{0}}\] from the lower end. Now the upper end is slowly raised. When the block leaves the ground, the mark P reaches the point where upper end of the relaxed string was. Expression for the work done by the force applied by the hand is -
A)
\[\frac{mg{{\ell }_{0}}}{4}\]
done
clear
B)
\[\frac{mg{{\ell }_{0}}}{8}\]
done
clear
C)
\[\frac{mg{{\ell }_{0}}}{16}\]
done
clear
D)
None of these
done
clear
View Answer play_arrow
A cube of iron whose sides are of length L, is put into mercury. The weight of iron cube is W. The density of iron is pp that of mercury is\[{{\rho }_{M}}\]. The depth to which the cube sinks is given by the expression -
A)
\[W{{L}^{2}}{{\rho }_{I}}\]
done
clear
B)
\[W{{L}^{2}}{{\rho }_{M}}\]
done
clear
C)
\[\frac{W}{{{L}^{2}}{{\rho }_{I}}}\]
done
clear
D)
\[\frac{W}{{{L}^{2}}{{\rho }_{M}}g}\]
done
clear
View Answer play_arrow
A block starts moving up a fixed inclined plane of inclination \[60{}^\circ \] with a velocity of 20 m/s and stops after 2 sec. The approximate value of coefficient of friction is - \[\left( g=10\text{ }m/{{s}^{2}} \right)\]
A)
3
done
clear
B)
3.3
done
clear
C)
0.27
done
clear
D)
0.33
done
clear
View Answer play_arrow
Three equal weights A, B and C of mass 2 kg each are hanging on a string passing over a fixed frictionless pulley as shown in the figure The tension in the string connecting weights B and C is-
A)
Zero
done
clear
B)
13 N
done
clear
C)
3.3 N
done
clear
D)
19.6 N
done
clear
View Answer play_arrow
At the height 80 m, an aeroplane is moving with 150 m/s. A bomb is dropped from it so as to hit a target. At what distance from the target should the bomb be dropped - (given \[g=10\text{ }m/{{s}^{2}}\])
A)
605.3 m
done
clear
B)
600 m
done
clear
C)
80 m
done
clear
D)
230 m
done
clear
View Answer play_arrow
A ball is dropped from the 9th storey of a multi-storeyed building reaches the ground in 3 second. In the first second of its free fall, it passes through n storeys, where n is equal to - (Take\[g=10\text{ }m\text{ }{{s}^{-}}^{2}\])
A)
1
done
clear
B)
2
done
clear
C)
3
done
clear
D)
4
done
clear
View Answer play_arrow
Light incident normally on face AB of a prism as shown in figure. A liquid of refractive index \[\mu \] is placed on face AC of the prism. The prism is made of glass of refractive index 3/2. The limits of p, for which total internal reflection takes place on face AC is -
A)
\[\mu >\frac{\sqrt{3}}{2}\]
done
clear
B)
\[\mu <\frac{3\sqrt{3}}{4}\]
done
clear
C)
\[\mu >\sqrt{3}\]
done
clear
D)
\[\mu <\frac{\sqrt{3}}{2}\]
done
clear
View Answer play_arrow
The focal length of a lens depends on -
A)
the radii of curvature of its surfaces
done
clear
B)
the refractive index of its material
done
clear
C)
the refractive index of the medium surrounding the lens
done
clear
D)
all the above factors
done
clear
View Answer play_arrow
An equi-convex lens has power P. It is cut into two symmetrical halves by a plane containing the principal axis and then two pieces are joined as shown in Fig. The power of the combination will be -
A)
P
done
clear
B)
2P
done
clear
C)
P/2
done
clear
D)
zero
done
clear
View Answer play_arrow
Parallel beam of light is incident on the system of two convex lenses of focal length \[{{f}_{1}}=20\] cm and \[{{t}_{2}}=10\] cm. What should be the distance between the two lenses so that rays after refraction from both the lenses pass undeviated-
A)
60 cm
done
clear
B)
30 cm
done
clear
C)
90 cm
done
clear
D)
40 cm
done
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View Answer play_arrow
Three right angled isosceles prisms A, B and C of the same material are placed in contact with each other as shown in figure. When a ray of light passes through a single prism, if suffers deviation p. What will be the angle of deviation for same ray if it passes through the combination?
A)
less than P
done
clear
B)
more than p
done
clear
C)
P
done
clear
D)
None of these
done
clear
View Answer play_arrow
Two monochromatic waves each of intensity I have a constant phase difference of\[\phi \]. If these waves superpose, then the intensity of the resultant wave is -
A)
4I
done
clear
B)
\[4I\text{ }cos\text{ }\phi \]
done
clear
C)
\[4I\text{ }co{{s}^{2}}\,\phi \]
done
clear
D)
\[4I\text{ }co{{s}^{2}}\,(\phi \,2)\]
done
clear
View Answer play_arrow
A student has measured the length of a wire equal to 0.04580 m. This value of length has the number of significant figures equal to -
A)
Five
done
clear
B)
Four
done
clear
C)
Six
done
clear
D)
None of these
done
clear
View Answer play_arrow
Some charge is being given to a conductor, then its potential is -
A)
maximum at surface
done
clear
B)
maximum at centre
done
clear
C)
same throughout the conductor
done
clear
D)
maximum somewhere between surface and centre
done
clear
View Answer play_arrow
64 small drops of mercury, each of radius r and charge q, coalesce to form a big drop. The ratio of the surface density of charge of each small drop with that of the big drop is -
A)
64 : 1
done
clear
B)
1 : 64
done
clear
C)
1 : 4
done
clear
D)
4 : 1
done
clear
View Answer play_arrow
Two batteries, one of e.m.f. 18 volts and internal resistance 2\[\Omega \], and the other of e.m.f. 12 volts and internal resistance 1\[\Omega \], are connected as shown in the figure. The voltmeter V will record a reading of -
A)
30 volt
done
clear
B)
18 volts
done
clear
C)
15 volt
done
clear
D)
14 volts
done
clear
View Answer play_arrow
If the potential difference across the internal resistance \[{{r}_{1}}\] is equal to the e.m.f. E of the battery, then -
A)
\[R\text{ }=\text{ }{{r}_{1}}+{{r}_{2}}\]
done
clear
B)
\[R\text{ }=\text{ }{{r}_{1}}/{{r}_{2}}\]
done
clear
C)
\[R\text{ }=\text{ }{{r}_{1}}-{{r}_{2}}~\]
done
clear
D)
\[R\text{ }=\text{ }{{r}_{2}}/{{r}_{1}}\]
done
clear
View Answer play_arrow
A parallel plate capacitor carries a charge q. The distance between the plates is doubled by application of a force. The work done by the force is -
A)
zero
done
clear
B)
\[{{q}^{2}}/C\]
done
clear
C)
\[{{q}^{2}}/2C\]
done
clear
D)
\[{{q}^{2}}/4C\]
done
clear
View Answer play_arrow
A 10 uF capacitor is charged to 500 V and then its plates are joined together through a resistance of 10 ohm. The heat produced in the resistance is -
A)
500 J
done
clear
B)
250 J
done
clear
C)
125 J
done
clear
D)
1.25 J
done
clear
View Answer play_arrow
Two similar coils of radius R and number of turns N are lying concentrically with their planes at right angles to each other. The currents flowing in them are I and 21 respectively. The resultant magnetic induction at the centre will be
A)
\[\frac{{{\mu }_{0}}NI}{R}\]
done
clear
B)
\[\frac{{{\mu }_{0}}NI}{2R}\]
done
clear
C)
\[\frac{\sqrt{3}{{\mu }_{0}}NI}{2R}\]
done
clear
D)
\[\frac{\sqrt{5}\,{{\mu }_{0}}NI}{2R}\]
done
clear
View Answer play_arrow
Two circular coils made of similar wires but of radius 20 cm and 40 cm are connected in parallel. The ratio of magnetic fields at their centre is -
A)
4 : 1
done
clear
B)
1 : 4
done
clear
C)
2 : 1
done
clear
D)
1 : 2
done
clear
View Answer play_arrow
The potential energy of magnet is:
A)
\[U=-\frac{MB}{2}\]
done
clear
B)
\[U=-\sqrt{3}\,\,\,\frac{MB}{2}\]
done
clear
C)
\[U\,\,=\,\,\frac{MB}{2}\]
done
clear
D)
None of these
done
clear
View Answer play_arrow
Two resistors of \[10\,\Omega \] and \[20\,\Omega \] and an ideal inductor of 10H are connected to a 2 V battery as shown. The key K is inserted at time\[t\text{ }=\text{ }0\]. The initial (\[t\text{ }=\text{ }0\] ) and final \[(t\text{ }\to \text{ }\infty )\] currents through battery are -
A)
\[\frac{1}{15}A,\,\frac{1}{10}A\]
done
clear
B)
\[\frac{1}{10}A,\,\frac{1}{15}A\]
done
clear
C)
\[\frac{2}{15}A,\,\frac{1}{10}A\]
done
clear
D)
\[\frac{1}{15}A,\,\frac{2}{25}A\]
done
clear
View Answer play_arrow
The following truth table corresponds to the logic gate -
A B X 0 0 0 0 1 1 1 0 1 1 1 1
A)
NAND
done
clear
B)
AND
done
clear
C)
XOR
done
clear
D)
OR
done
clear
View Answer play_arrow
A silicon specimen is made into a p-type semiconductor by doping on an average one indium atom per \[5\times {{10}^{7}}\] silicon atoms. If the number density of atoms in the silicon specimen is \[5\times {{10}^{26}}\] atoms/metre3 then the number of acceptor atoms in silicon per cubic centimeter will be -
A)
\[2.5\times {{10}^{30}}\]
done
clear
B)
\[1.0\times {{10}^{13}}\]
done
clear
C)
\[1.0\times {{10}^{15}}\]
done
clear
D)
\[2.5\times {{10}^{36}}\]
done
clear
View Answer play_arrow
The simplest formula of the compound containing \[50\,%\] X (atomic mass 10 amu) and \[50\,%\] Y (atomic mass 20 amu) is:
A)
\[X{{Y}_{2}}\]
done
clear
B)
\[{{X}_{2}}Y\]
done
clear
C)
\[{{X}_{2}}{{Y}_{3}}\]
done
clear
D)
\[X{{Y}_{3}}\]
done
clear
View Answer play_arrow
If the principal quantum number is 3, the azimuthal quantum number can have values -
A)
1, 2, 3
done
clear
B)
3, 2, 1, 0-1, -2, -3
done
clear
C)
0, 1, 2
done
clear
D)
\[\frac{1}{2},\,\,-\frac{1}{2}\]
done
clear
View Answer play_arrow
Oxidation state of nitrogen is incorrectly given in -
A)
\[{{N}_{2}}{{H}_{4}},\,\left( -2 \right)\]
done
clear
B)
\[AIN,\left( -\,3 \right)\]
done
clear
C)
\[{{\left( {{N}_{2}}{{H}_{5}} \right)}_{2}}S{{O}_{4}},\,\left( +2 \right)\]
done
clear
D)
\[KN{{O}_{2}},\left( +\,3 \right)\]
done
clear
View Answer play_arrow
One mole of \[{{N}_{2}}{{O}_{4}}(g)\] at 300 K is kept in a closed container at 1 atm. It is heated to 600 K when \[20\,%\] by mass of \[{{N}_{2}}{{O}_{4}}(g)\] decomposes to\[N{{O}_{2}}\left( g \right)\]. The resultant pressure is -
A)
1.2 atm
done
clear
B)
2.0 atm
done
clear
C)
2.4 atm
done
clear
D)
1.0 atom
done
clear
View Answer play_arrow
The property of colloid is
A)
Scattering of light
done
clear
B)
settling under gravity
done
clear
C)
Dialysis
done
clear
D)
Emulsion
done
clear
View Answer play_arrow
Which gives \[{{N}_{2}}\] on heating -
A)
\[N{{H}_{4}}N{{O}_{3}}\]
done
clear
B)
\[N{{H}_{4}}N{{O}_{2}}\]
done
clear
C)
\[Na{{N}_{3}}\]
done
clear
D)
[b], [c] both
done
clear
View Answer play_arrow
Which among the following species does not have bond angles of \[90{}^\circ \] -
A)
\[\left[ Ni{{\left( CO \right)}_{4}} \right]\]
done
clear
B)
\[\left[ Fe{{\left( CO \right)}_{5}} \right]\]
done
clear
C)
\[S{{F}_{6}}\]
done
clear
D)
\[Xe{{F}_{4}}\]
done
clear
View Answer play_arrow
Which among the following possess only ionic bond -
A)
\[{{B}_{4}}C\]
done
clear
B)
WC
done
clear
C)
\[A{{l}_{4}}{{C}_{3}}\]
done
clear
D)
\[\text{ }M{{g}_{2}}{{C}_{3}}\]
done
clear
View Answer play_arrow
Which of the following statement is correct for\[CsB{{r}_{3}}\]:
A)
It is a covalent compound
done
clear
B)
It contains \[C{{s}^{3+}}\] and \[B{{r}^{-}}\] ions
done
clear
C)
It contains \[C{{s}^{+}}\] and \[B{{r}^{-}}_{3}\] ions
done
clear
D)
It contains\[C{{s}^{+}}\], \[B{{r}^{-}}\] and lattice \[B{{r}_{2}}\] molecule
done
clear
View Answer play_arrow
What is wrong about \[{{I}_{2}}C{{l}_{6}}\] molecule -
A)
It is a planar molecule
done
clear
B)
It is dimmer of \[IC{{l}_{3}}\]
done
clear
C)
Iodine is \[s{{p}^{3}}{{d}^{2}}\] hybridised
done
clear
D)
It is a polar molecule
done
clear
View Answer play_arrow
Pick out the incorrect order of given properties-
A)
Electronegativity -\[P<S<N<O\]
done
clear
B)
Stability - \[-\,{{O}_{2}}<{{O}_{2}}^{-}<{{O}^{2-}}_{2}<\,{{O}^{\,2+}}_{2}\]
done
clear
C)
Dipole moment - \[\,P{{H}_{3}}<As{{H}_{3}}<Sb{{H}_{3}}<N{{H}_{3}}\]
done
clear
D)
Vander wall radius - \[Ne<F<O<N\]
done
clear
View Answer play_arrow
Hybridisation at the central atom of the following molecules are respectively. \[C{{O}_{3}}^{-2},\text{ }B{{F}_{4}}^{-},\text{ }{{I}_{3}}^{-},\,\,CI{{F}_{5}}\]
A)
\[s{{p}^{2}},\,s{{p}^{3}},\,s{{p}^{3}}{{d}^{2}},\,s{{p}^{3}}d\]
done
clear
B)
\[s{{p}^{2}},\,s{{p}^{2}}s{{p}^{3}}d,\,s{{p}^{3}}{{d}^{2}}\]
done
clear
C)
\[s{{p}^{2}},\,s{{p}^{3}},\,s{{p}^{3}}d,\,\,s{{p}^{3}}{{d}^{2}}\]
done
clear
D)
\[s{{p}^{2}},s{{p}^{3}},s{{p}^{3}}{{d}^{3}},s{{p}^{3}}d\]
done
clear
View Answer play_arrow
Which of the following statement is incorrect -
A)
The stability constant of \[{{\left[ Cu{{\left( N{{H}_{3}} \right)}_{4}} \right]}^{2+}}\] is greater than \[{{\left[ Cu{{(en)}_{2}} \right]}^{2+}}\]
done
clear
B)
\[\left[ Ag{{\left( N{{H}_{3}} \right)}_{2}} \right]\,\,\,\text{ }\left[ Ag{{\left( CN \right)}_{2}} \right]\] has only one coordination isomer
done
clear
C)
It \[{{\Delta }_{0}}\,<\,P.E.\] then 4th electron enters in eg. Set
done
clear
D)
Cis-platin is a heteroleptic complex
done
clear
View Answer play_arrow
Coordination number and oxidation number of Cr in \[{{K}_{3}}\left[ Cr{{({{C}_{2}}{{O}_{4}})}_{3}} \right]\] are respectively?
A)
4 and +2
done
clear
B)
6 and +3
done
clear
C)
3 and +3
done
clear
D)
3 and 0
done
clear
View Answer play_arrow
Pick out the wrong statement about wilkinson?s catalyst -
A)
It is \[\pi \] bonded organometallic compound
done
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B)
It is \[\left[ RhCl{{\left( PP{{h}_{3}} \right)}_{3}} \right]\]
done
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C)
Central metal ion is \[ds{{p}^{2}}\] hybridised
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D)
It is low spin complex
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View Answer play_arrow
The momentum of a particle associated with de-Broglie?s wavelength of \[6\text{ }\overset{{}^\circ }{\mathop{A}}\,\] is-
A)
\[~1.1\,\,\times \,\,{{10}^{-24}}\,kg\,m\,{{s}^{\,-\,1}}\]
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B)
(b)\[~1.1\,\,\times \,\,{{10}^{34}}\,kg\,m\,{{s}^{\,-\,1}}\]
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C)
(c)\[~39.6\,\,\times \,\,{{10}^{-34}}\,kg\,m\,{{s}^{\,-\,1}}\]
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D)
\[~39.6\,\,\times \,\,{{10}^{-24}}\,kg\,m\,{{s}^{\,-\,1}}\]
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View Answer play_arrow
CsBr crystallizes in a body centred cubic lattice. The unit cell length is 436.6 pm. Given that the atomic mass of \[Cs=\text{ }133\] and of \[Br\text{ }=\text{ }80\] amu and Avogadro?s number being\[6.02\times {{10}^{23}}mo{{l}^{-1}}\], the density of CsBr is:
A)
8.50 g/\[c{{m}^{3}}\]
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B)
4.25 g/\[c{{m}^{3}}\]
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C)
42.5 g/\[c{{m}^{3}}\]
done
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D)
0.425 g/\[c{{m}^{3}}\]
done
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View Answer play_arrow
Match the following:
I II [A] Calcination (1) \[2C{{u}_{2}}S\,+\,3{{O}_{2}}\,\,\to \]\[\,\,2C{{u}_{2}}O\,+\,2S{{O}_{2}}\] [B] Roasting (2) \[F{{e}_{2}}{{O}_{3}}.n{{H}_{2}}O\,\,\to \] \[F{{e}_{2}}{{O}_{3}}+n{{H}_{2}}O\,\,\] [C] Flux (3) \[C{{r}_{2}}{{O}_{3}}+2Al\,\,\to \,\,\]\[A{{l}_{2}}{{O}_{3}}+2Cr\] [D] Thermite (4) \[Si{{O}_{2}}+\,FeO\,\to \,FeSi{{O}_{3}}\]
A)
A - 1 B - 2 C - 3 D - 4
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B)
A - 2 B - 1 C - 4 D - 3
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C)
A - 4 B - 1 C - 2 D - 3
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D)
A - 3 B - 1 C - 2 D - 4
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View Answer play_arrow
Which of the following rules could explain the presence of three unpaired electrons in N-atom-
A)
Hund's rule
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B)
Aufbau's principle
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C)
Heisenberg's uncertainty principle
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D)
Pauli's exclusion principle
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View Answer play_arrow
The molal elevation constant of water = 0.52 K\[molalit{{y}^{-1}}\]. The boiling point of 1.0 molal aqueous \[KCl\] solution (assuming complete dissociation of\[KCl\]), should be -
A)
\[100.52{}^\circ C\]
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B)
\[101.04{}^\circ C\]
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C)
\[99.48{}^\circ C\]
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D)
\[98.96{}^\circ C\]
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View Answer play_arrow
2 mole of ideal gas at \[27{}^\circ C\] temp. is expanded reversibly from 2 lit to 20 lit. Find entropy change in cal -
A)
92.1
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B)
0
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C)
4
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D)
9.2
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View Answer play_arrow
Which of the following statement is incorrect -
A)
Activation energy for the forward reaction is always equal to activation energy for the reverse reaction
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B)
An increase in temperature increases the reaction rate
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C)
The larger the initial reactant concentration for a second order reaction the shorter its half life
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D)
When \[\Delta t\] is infinitesimally small, the average rate equals the instantaneous rate
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View Answer play_arrow
Three test tubes contain aqueous solutions as under
I. KCN II. \[Fe{{\left( CN \right)}_{2}}\] III: Mixture of KCN, \[Fe{{\left( CN \right)}_{2}}\] in molar ratio 4:1 pick up the correct statement
A)
Both I and III will give test for \[C{{N}^{-}}\]
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B)
Both II and III will give test for \[F{{e}^{+2}}\]
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C)
Solution III will neither give test for GST nor \[F{{e}^{+2}}\] ions
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D)
Electrical conductivity of all solution will be same
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View Answer play_arrow
What will be the \[{{H}^{+}}\] ion concentration when 4 gm \[NaOH\] dissolved in 1000 ml. of water -
A)
\[{{10}^{-1}}\]
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B)
\[{{10}^{-13}}\]
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C)
\[{{10}^{-4}}\]
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D)
\[{{10}^{-10}}\]
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View Answer play_arrow
The compressibility factor of a gas is less than unity at STP, therefore -
A)
\[{{V}_{m}}>22.4\text{ }lit\]
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B)
\[{{V}_{m}}<22.4\text{ }lit\]
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C)
\[{{V}_{m}}=\,\,22.4\,\,lit\]
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D)
\[{{V}_{m}}=\,\,44.8\,\,lit\]
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View Answer play_arrow
For the cell given below \[\left( {{E}_{cell}}-E{{{}^\circ }_{cell}} \right)\] is\[-0.15\text{ }V\]. \[Zn/Z{{n}^{+2}}\parallel \,C{{u}^{+2}}/Cu\] then -
A)
\[\frac{\left[ Z{{n}^{+2}} \right]}{\left[ C{{u}^{+2}} \right]}\,\,=\,\,{{10}^{2}}\]
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B)
\[\frac{\left[ Z{{n}^{+2}} \right]}{\left[ C{{u}^{+2}} \right]}\,\,=\,\,{{10}^{-\,2}}\]
done
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C)
\[\frac{\left[ Z{{n}^{+2}} \right]}{\left[ C{{u}^{+2}} \right]}\,\,=\,\,{{10}^{-\,4}}\]
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D)
\[\frac{\left[ Z{{n}^{+2}} \right]}{\left[ C{{u}^{+2}} \right]}\,\,=\,\,{{10}^{5}}\]
done
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View Answer play_arrow
The unit cell cube length for LiCI (just like NaCI structure) is \[5.14\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]. Assuming anion- anion contact, the ionic radius for chloride ion is:
A)
\[1.815\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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B)
\[2.8\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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C)
\[3.8\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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D)
\[4.815\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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View Answer play_arrow
On passing 3 amp. of electricity for 50 minutes, 1.8 g of metal deposits. The equivalent mass of metal is -
A)
10.5
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B)
25.8
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C)
19.3
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D)
30.7
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View Answer play_arrow
Cane sugar \[+\text{ }{{H}_{2}}O\,\,\to \] Aldo sugar + keto sugar what is the final product of reduction of above keto sugar by HI (in Presence of red Phosphorous)
A)
Fructosazone
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B)
Penta Acetyl Galactose
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C)
Sorbitol and Penta acetyl fructose
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D)
Sixth Homologhe of Paraffin series
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View Answer play_arrow
For the reaction \[{{X}_{2}}{{O}_{4(l)}}\,\,\to \,\,2X{{O}_{2(g)}}\,\,\Delta E\,\,=\,\,2.1\] \[Kcal,\,\,\Delta s\,=\,20\,cal/K\] at 300 K. Hence \[\Delta \]G is -
A)
2.7 Kcal
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B)
-2.7 Kcal
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C)
9.3 Kcal
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D)
-9.3 Kcal
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View Answer play_arrow
The relative reactivity towards reaction with MeMgBr of the following is:
A)
(i)>(ii)>(iu)
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B)
(ii)>(iii)>(i)
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C)
(i)>(iii)>(u)
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D)
(iii)>(i)>(ii)
done
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View Answer play_arrow
How many stereo isomers are possible from- \[C{{H}_{3}}-CH\left( Br \right)-CH\left( Br \right)-CH=CH-C{{H}_{3}}\]
A)
4
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B)
6
done
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C)
8
done
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D)
10
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View Answer play_arrow
How are the following compound related?
A)
Identical
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B)
Enantiomers
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C)
Structural isomer
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D)
Distereomers
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View Answer play_arrow
For the given compound which of the following statement(s) are correct?
A)
It has 8 stereoisomers
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B)
It has 3 stereo centres
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C)
The compound does not show tautomerism
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D)
All the above
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View Answer play_arrow
The major product (Z) can be:
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
o-xylene on ozonolysis may give:
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
Arrange stability of the given carbocations in decreasing order:
A)
(iii)>(ii)>(i)>(iv)
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B)
(i) > (ii) > (iii) > (iv)
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C)
(iii) > (i) > (ii) > (iv)
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D)
(u)>(iii)>(i)>(iv)
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View Answer play_arrow
Identify correct reactivity order for \[{{S}_{N}}1\] reaction:
A)
(i)>(ii)>(iii)
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B)
(ii)>(i)>(iii)
done
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C)
(i)>(iii)>(ii)
done
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D)
(iii)>(i)>(ii)
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View Answer play_arrow
In the given reaction
A and B are:
A)
\[M{{e}_{3}}C-C{{H}_{2}}OH+Ph-COONa\]
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B)
\[M{{e}_{3}}C-COONa+Ph-C{{H}_{2}}OH\]
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C)
done
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D)
done
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View Answer play_arrow
Identify structure of Nylon-6:
A)
\[~+C{{H}_{2}}-C{{H}_{2}}-O-C{{H}_{2}}-C{{H}_{2}}-O{{+}_{n}}\]
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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
What could be the product for 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
Predict the major product of 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
Predict the end product of the following reaction sequence:
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 major product [X] of the given reaction 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
What is the name of the following compound?
A)
Ethyl-4-oxopentanoate
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B)
Ethyl ester methyl ketone
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C)
Ethyl-2-ketonepentanoate
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D)
Ethyl-4-ketone pentyl ester
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View Answer play_arrow
Identify the type of connective tissue and their components given in the figure.
A)
A-White blood cells, B-Red blood cells, C-Platelets, D-Blood
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B)
A-Haversian system, B-Central canal, C-Lacuna, D-Bone
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C)
A-Macrophages, B-Collagenous fibre, C-Elastic fibre, D-Loose connective tissue
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D)
A-Haversian system, B-Red blood cells, C-While blood cells, D-Blood
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View Answer play_arrow
Benign tumours are enclosed in
A)
nervous tissue
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B)
epithelial tissue
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C)
muscular tissue
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D)
connective tissue
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View Answer play_arrow
Choose the odd pair out in the following column.
A)
Areolar connective tissue - Collagen
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B)
Epithelium - Keratin
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C)
Neuron - Melanin
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D)
Muscle fibre - Actin
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View Answer play_arrow
When breast feeding is replaced by less nutritive food low in proteins and calories, the infants below the age of one year are likely to suffer from -
A)
Marasmus
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B)
Rickets
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C)
Kwashiorkor
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D)
Pellagra
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View Answer play_arrow
Which of these terms is used for two different parts applied with a slight difference in is spelling, not in pronunciation?
A)
Pelvi's
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B)
Ileum
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C)
Cloaca
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D)
Intestine
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View Answer play_arrow
Identify the marked structures in the given figure.
A)
A-Sarcomere, B-H-zone, C-A-band, D-Actin
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B)
A-H-zone, B-A-band, C-Actin, D-Sacromere
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C)
A-Actin, B-H-zone, C-A-band, D-Sarcomere
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D)
A-Sarcomere, B-A-band, C-H-zone, D-Actin
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View Answer play_arrow
Which one of the following is the correct difference between rod cells and cone cells of our retina?
A)
Feature Rod cells Cone cells Visual acuity High Low
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B)
Feature Rod cells Cone cells Visual pigment Iogopsin Contained Rhodopsin
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C)
Feature Rod cells Cone cells Overall function Vision in poor light Colour vision & detailed vision in bright light
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D)
Feature Rod cells Cone cells Distribution More concentrated in centre Evenly distributed all over retina of retina
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View Answer play_arrow
In a man, abducens nerve is injured. Which one of the following functions will be affected?
A)
Movement of the eye ball
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B)
Swallowing
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C)
Movement of the tongue
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D)
Movement of the neck
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View Answer play_arrow
\[N{{a}^{+}}-{{K}^{\text{+}}}\] pump is found in membranes of many cells, like nerve cells. It works against electro- chemical gradient and involve in integral protein ATPase. For each molecule of ATP used-
A)
Three ions of \[N{{a}^{+}}\] are pumped out and two \[{{K}^{+}}\] are taken in
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B)
Three ions of \[N{{a}^{+}}\] are taken in and two \[{{K}^{+}}\]are pumped out
done
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C)
Two ions of \[N{{a}^{+}}\] are thrown out and three \[{{K}^{+}}\] are absorbed
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D)
Three ions of \[{{K}^{+}}\] are absorbed and three \[N{{a}^{+}}\] are pumped out
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View Answer play_arrow
Which of the following is known as ?cochlear duct??
A)
Scala media
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B)
Scala vestibuli
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C)
Scala tympani
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D)
None of these
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View Answer play_arrow
Which one is related to urine concentration in mammals?
A)
Testosterone hormone
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B)
Antidiuretic hormone
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C)
Oxytocin hormone
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D)
All of the above
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View Answer play_arrow
In column-I (the endocrine structure) and column-II (the corresponding hormones). Match the columns and identify the correct option from those given.
Column I
Column II
[A] Hypothalamus
I. Cortisol
[B] Anterior pituitary
II. Oestrogen
[C] Testis
III. FSH and LH
[D] Ovary
IV. Androgens
V. Gonadrotropin releasing hormone
A)
A - V B - III C - IV D - II
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B)
A - V B - III C - I D - IV
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C)
A - I B - II C - IV D - III
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D)
A - III B - V C - IV D - II
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View Answer play_arrow
Match the following columns.
Column I Column II I. Herbarium 1. Preserved plant and animal specimen and also artistic and educational material II. Botanical Garden 2. Living wild animal III. Zoological Park 3. Preserved plant specimen on sheet IV. Museum 4. Diversity of living plant
Codes
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
Most abundant bacteria are
A)
Chemosynthetic bacteria
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B)
Heterotrophic bacteria
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C)
Heterotrophic decomposers
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D)
Archaebacteria
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Which of the following statements about Euglena is true?
A)
Euglenoids bear flagella
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B)
Euglena when placed in continuous darkness, losses their photosynthetic activity and die
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C)
The pigments of Euglena are quite different from those of green plants
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D)
Euglena is a marine protest
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View Answer play_arrow
Identify the edible and delicate Ascomycetes members.
A)
Agaricus and Puccinia
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B)
morels and truffles
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C)
puffball and Agaricus
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D)
puffball and mushrooms
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Which of the following statements are false about viruses?
I. Viruses are facultative parasites. II. Viruses can multiply only when they are inside the living cells. III. Viruses cannot pass bacterial proof filters. IV. Viruses do not contains proteins DNA and RNA.
Code:
A)
I, II and III
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B)
II, III and IV
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C)
I, III and IV
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D)
I, II, III and IV
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The members of Chlorophyceae usually have a rigid cell wall made up of-
A)
cellulose (outer layer) and algin (inner layer)
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B)
pectose (inner layer) and peptidoglycan (outer layer)
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C)
cellulose (inner layer) and pectose (outer layer)
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D)
chitin (inner layer) and pectose (outer layer)
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View Answer play_arrow
In bryophytes antheridium produces ...A... and female sex organ archegonium produces ...B... Here A and B refer to -
A)
A-uniflagellate antherozoids; B-two egg
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B)
A-biflagellate antherozoids; B-one egg
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C)
A-non-motile antherozoids; B-one egg
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D)
A-non-motile antherozoids; B-two egg
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In pteridophytes spore germinate to give rise to
A)
thalloid gametophytes called prothallus
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B)
thalloid sporophytes called prothallus
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C)
thalloid sporocarp
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D)
thalloid, photosynthesis sporophyte
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View Answer play_arrow
In gymnosperms the dominate phase is ...A... They are heterosporous, produce ...B... and...C.... Here, A, B and C refers to -
A)
A-sporophyte, B-haploid microspores, C-haploid megaspores
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B)
A-gametophyte, B-haploid microspores, C-diploid megaspores
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C)
A-sporophyte, B-diploid microspores, C-diploid megaspores
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D)
A-gametophyte, B-diploid microspores, C-haploid megaspores
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View Answer play_arrow
How many organisms in the list given below are autotrophs? Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Trypanosoma, Porphyra, Wolffia -
A)
Four
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B)
Five
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C)
Six
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D)
Three
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View Answer play_arrow
Two male gametes in angiosperms are produced by -
A)
Meiosis of microspore mother cell
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B)
Meiosis of megaspore mother cell
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C)
Mitosis of generative cell
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D)
Mitosis of vegetative cell
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View Answer play_arrow
During the germination of seeds of cereals the stored food hydrolyzing enzymes an synthesized in-
A)
Cotyledon
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B)
Endosperm
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C)
Aleurone layer
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D)
Plumule
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View Answer play_arrow
Egg apparatus of an embryo sac consists of -
A)
Egg cell only
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B)
Egg cell + 3 antipodal cells
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C)
One egg cell + 2 synergids
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D)
One egg cell + 2 synergids + 2 antipodal cells
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View Answer play_arrow
The given kind of pyramid cannot be possible for-
A)
Pyramid ofbiomass in forest ecosystem
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B)
Pyramid of number in grassland ecosystem
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C)
Pyramid of number in lake ecosystem
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D)
Pyramid of biomass in lake ecosystem
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View Answer play_arrow
Birds and mammal species does not show -
A)
Migration
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B)
Produce small sized, large number of offesprings
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C)
Regulation by physical mean
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D)
Breed more than once in life time
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Choose the number of correct statements regarding secondary succession -
[A] Rate of succession is slow [B] Pioneer species depends on soil conditions and water availability [C] Climax reach fastly [D] Occurs on bare rock leads to mesopytic conditions [E] Climax community are forest
A)
2
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B)
3
done
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C)
4
done
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D)
1
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View Answer play_arrow
How many of the following are the characteristic features of stable ecosystem -
[A] Less seasonal variations [B] Photosynthetis/Respiration = 1 [C] Few number of keystone species [D] Resistant to occasional of disturbances [E] Annual net community productivity almost stable [F] High degree of exotic species
A)
3
done
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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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Select the number of correct statements regarding stomatal apparatus -
[A] Dorsiventral leaf has greater number of stomata on lower surface [B] Isobilateral leaf has less number of stomata over upper surface [C] Cellulosic microfibrils radially arranged on outer wall of guard cells [D] Roating hydrophytes posses hypostomatic leaves [E] Stomata are sunken in xerophytes
A)
2
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B)
3
done
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C)
4
done
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D)
5
done
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Which of the following is associated with principal mechanism of asexual reproduction and vegetative propagation?
A)
Mitosis
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B)
Meiosis
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C)
Both [a] and [b]
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D)
None of these
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View Answer play_arrow
Respectively in \[{{C}_{3}}\] and \[{{C}_{4}}\] plants weather photorespiration would be present at low \[C{{O}_{2}}\] concentration -
A)
High, High
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B)
Low, High
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C)
High, Negligible
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D)
Neglible, High
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Choose the steps of glycolysis where substrate level phosphorylation occurs -
[A]\[\,Glucose\,\,\to \,\,Glucose\text{ }6P\] [B] \[1,\,\,3\,\,Bi\,\,PGA\,\,\to \,\,3\,PGA\] [C] \[1,\text{ }3\text{ }Bi\text{ }PGAL\,\,\to \,\,1,\text{ }3,\text{ }Bi\text{ }PGA\] [D] \[PEP\text{ }\to \text{ }Pyruvate\] [E] \[Fructose\text{ }6\text{ }P\,\,\to \,\,Fructose\text{ }1,\text{ }6\text{ }Bi\text{ }P\]
A)
A, E
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B)
A, D
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C)
B, D
done
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D)
A, B, D, E
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View Answer play_arrow
A plant is kept in 24 hr. darkness and a flash of light is provided in middle of it's dark period. The plant show flowering. This plant should be a
A)
Long day plant
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B)
Short day plant
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C)
Day neutral plant
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D)
\[{{C}_{4}}\] plant
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View Answer play_arrow
Which of the following statements is not true?
A)
Both mitochondria and chloroplasts provide energy to cells in the same way
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B)
Both mitochondria and chloroplasts have more than one membrane
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C)
Only chloroplasts contain the pigment chlorophyll
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D)
Both animal and plant cells contain mitochondria
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View Answer play_arrow
Girdling experiment cannot be performed in sugarcane because:
A)
It cannot withstand injury
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B)
Vascular bundles in it are scattered
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C)
Phloem in it situated internal to xylem
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D)
Sugarcane plants are too delicate
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Select the incorrect match -
A)
Bakanae disease - Gibberellin
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B)
Adenine derivative - Cytokinin
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C)
Oxidation of carotene - IBA
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D)
Methionine - Ethylene
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Select incorrect statement regarding \[{{N}_{2}}\] fixing microbes -
A)
Some of the \[{{N}_{2}}\] fixers are free living while some are symbiotic
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B)
All \[{{N}_{2}}\] fixing prokaryotes posses leghaemoglobin as \[{{O}_{2}}\] scavenger
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C)
Symbiotic \[{{N}_{2}}\] fixers performs anaerobic respiration in symbiotic state
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D)
Cyanobacteria can fix \[{{N}_{2}}\] in both symbiotic and free living state
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Which of the following is a polyunsaturated fatty acid?
A)
Palmitic acid
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B)
Arachidonic acid
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C)
Stereic acid
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D)
None of the above
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Which of the following is true?
[A] The all molecules in the acid insoluble fraction are polymer substance [B] Collgen is a intracellular ground substance [C] Protein is a homopolymer of a amino acid [D] The polypeptide chain formed during translation is primary configuration of protein.
A)
B, C & D
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B)
A, B & D
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C)
B & D
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D)
Only D
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Thymine increase the stability of DNA because-
A)
It reduce activity of DNA
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B)
It prevent degradation of DNA
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C)
It reduce rate of mutation in DNA
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D)
[a] & [c] both
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Few statement regarding cell wall is given below. How many of these are correct?
[A] Cellulosic cell wall is present in plant and few fungi [B] Cell wall is present in all plants and few animals [C] Cell wall is common among bacteria, plant and fungi [D] Cell wall is dead, flexible and permeable
A)
Four
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B)
One
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C)
Two
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D)
Three
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RER is frequently involved in -
A)
Protein synthesis
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B)
Carbohydrate synthesis
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C)
Lipid synthesis
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D)
[a] & [c] both
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Oxidative enzyme in plant cell are present in -
A)
Mitochondria and peroxysome
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B)
Only mitochondria
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C)
Mitochondria and chloroplast
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D)
Mitochondria, chloroplast and peroxisome
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Chromosomal structure which are attached to each other by centromere during meiosis-I is known as -
A)
Homologous chromosome
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B)
Sister chromatid
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C)
Daughter chromosome
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D)
[b] & [c] both
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Golgi complex and ER disappear during..... A.....and reappear during..... B..... . What is A and B respectively?
A)
Prophase and cytokinesis
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B)
Prophase and Telophase
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C)
Metaphase and Telophase
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D)
Metaphase and cytokinesis
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Which of the following property of phospholipids is responsible for lipid bilayer formation?
A)
Zwittorio
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B)
Amphoteric nature
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C)
Amphipathic nature
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D)
All of above
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If the temperature is increased above \[35\text{ }{}^\circ C\]
A)
Rate of decline of respiration will be earlier than decline of photosynthesis
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B)
Rate of decline of photosynthesis will be earlier than decline of respiration
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C)
Both decline simultaneously
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D)
Both do not show fixed pattern
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Quiescent centre is found in plants at the -
A)
Root tip
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B)
Cambium
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C)
Shoot tip
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D)
Tip
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Cambium is a type of -
A)
Apical meristem
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B)
Intercalary meristem
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C)
Lateral meristem
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D)
Permanent or mature meristem
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The first few leaves after the cotyledons in the seeding of Acacia are pinnately compound but the petioles of the upper compound leaves are flattened and they bear few pinnae. The adult plant has only parallel veined leaf like flattened petioles but without any pinnae. These observation lead us to the conclusion that:
A)
The leaves in the adult plant are reduced to phyllode while the seeding leaves are unreduced
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B)
The green parallel veined structures in the adult plant are phylloclades
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C)
The plant exhibits heterophyJJy bearing simple leaves in the adult plant and compound leaves in the seeding
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D)
The adult plant leaves are a case of reversion where they become simple like cotyledons
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Endospermic seed are present in -
[A] Tulip [B] Petunia [C] Trifolium [D] Castor
A)
A & D
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B)
A, B & D
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C)
B & C
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D)
A, B, C & D
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Which of the following is true regarding the figure given below?
A)
Leaves are modified for protection
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B)
Phyllode is present
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C)
Phylloclade is present
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D)
[a] & [c] both
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During viral infection the protein formed in host cells to resist is:
A)
Interferon
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B)
Antitoxin
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C)
Antibody
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D)
Histone
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Saline solution is given to patients of Cholera because:
A)
\[N{{a}^{+}}\] prevents water loss from body
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B)
NaCI function as regulatory material
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C)
NaCI produces energy
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D)
NaCI is antibacterial
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What is true for monoclonal antibodies?
A)
These antibodies obtained from one parent and for one antigen
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B)
These obtained from different parents and for one antigen
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C)
These obtained from one parent and for many antigens
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D)
These obtained from many parents and for many antigen
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Salmonella is related with -
A)
Typhoid
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B)
Polio
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C)
T.B.
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D)
Tetanus
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Mental retardness in man occur due to -
A)
Loss of one X chromosome
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B)
Addition of one X chromosome
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C)
Slight growth in Y
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D)
Overgrowth in Y
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Symptoms of Lathyrism -
A)
Bone deformation
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B)
Muscular dystrophy and paralysis
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C)
Asphyxia
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D)
Cordiac arrest
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Segments of DNA which can move in genome-
A)
Transposons
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B)
Introns
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C)
Exons
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D)
Cistrons
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Common bacterium used in genetic engineering is-
A)
E. Coli
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B)
Diplococcus
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C)
Rhizobium
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D)
Spirillum
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An example of gene therapy is -
A)
Production of injectable Hepatitis B vaccine
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B)
Production of vaccines in food crops like potatoes which can be eaten
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C)
Production of test tube babies by artificial insemination and implantation of fertilized eggs
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D)
Introduction of gene for adenosine deaminase in persons suffering from Severe Combined Immune-Deficiency (SCID)
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Which of these is not correct regarding Bt cotton?
A)
No such plant is heard of
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B)
It is a disease/resistant plant
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C)
It produces more yield of cotton
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D)
It has been obtained by recombination
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Genetic material of prokaryotic cell -
A)
Non histonic double stranded DNA
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B)
Histonic double stranded DNA
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C)
Histone & DNA both are absent
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D)
Histone without DNA
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In inducible operon, regulatory gene synthesize
A)
Promoter
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B)
Operator
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C)
Represser
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D)
Aporepressor
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Irregularity is found in drosophila during the organ differentiation for example- inplace of wing, long legs are formed. Which gene is responsible for-
A)
Double dominant gene
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B)
Homeotic gene
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C)
Complimentary gene
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D)
Plastid
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Dioecious organisms are -
A)
Neries
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B)
Apis
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C)
PUa
done
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D)
All of above
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Alimentary canal without anus is found in -
A)
Platyhelminthese
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B)
Nemathelminthese
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C)
Annelida
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D)
Mollusca
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What is the value of temperature coefficient \[\left( {{Q}_{10}} \right)\] dark reaction
A)
1
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B)
2 or 3
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C)
Both
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D)
None of the above
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Parapodia are locomotory organ in -
A)
Terrestrial annelids
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B)
Parasitic annelids
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C)
Aquatic annelids
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D)
All of above
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A soft and spongy layer of skin forms a mantle over the-
A)
Head
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B)
Muscular foot
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C)
Visceral hump
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D)
Whole body
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A reduction of NADP to \[NADP{{H}_{2}}\] is associated with-
A)
EMP-pathway
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B)
HMP-shunt
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C)
Calvin cycle
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D)
Glycolysis
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Number of vasa effentia in each testies of male frog are -
A)
15-17
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B)
10-12
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C)
8-10
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D)
14-16
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Functional connection between kidney and gonads are found in -
A)
Male frog
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B)
Female frog
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C)
Both of above
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D)
None of above
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Ommatidia in each compound eye of cockroach are-
A)
Hexagonal and 2500 in no.
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B)
Pentagonal and 2000 in no.
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C)
Hexagonal and 2000 in no.
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D)
Pentagonal and 2500 in no.
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Number of ovariole or ovarian tubule in both ovaries are -
A)
8
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B)
16
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C)
32
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D)
64
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Calciferous gland are present in which part of elementary canal of earthworm -
A)
Buccal cavity
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B)
Pharynx
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C)
Oesophagus
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D)
Stomach
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Which one is false?
A)
Pleura is double covering of kidney
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B)
Scurvy is due to vilatmin C deficiency
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C)
Pancreas is both exocrine and endocrine gland
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D)
Blood from right side of heart is carried to lungs by pulmonary artery
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Forced deep breathing for a few minutes by a person sitting at rest may be followed by a temporary cessation of breathing. This is due to-
A)
Too much Oz in the blood
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B)
Too much COs in the blood
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C)
Very little C02 in the blood
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D)
Both too much 02 and very little \[C{{O}_{2}}\] in the blood
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View Answer play_arrow
Which of the following statements regarding brown fat is correct?
A)
It is poorly vascularized
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B)
It functions in unilocular energy storage
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C)
It is directly innervated by the parasympathetic nervous system
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D)
It produces heat through the uncoupling of the electron transport chain from oxidative phosphorylation.
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The period when menstrual cycle stops is -
A)
Menarche
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B)
Luteal phase
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C)
Menopause
done
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D)
Heat period
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Heart of crocodile is
A)
single chambered
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B)
two chambered
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C)
three chambered
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D)
four chambered
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Myocardial infarction is caused by
A)
Hardening of arteries
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B)
lumpy thickness develop in the inner walls of arteries
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C)
clot may occur in the lumen of a pulmonary artery
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D)
sudden interruption in blood flow towards a portion of heart
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In kidney the high capillary bed is found -
A)
in Bowman's capsule
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B)
around anterior tubules
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C)
around loop of Henie
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D)
absent
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Find out the sequence of binding of the following ammo acyl -t-RNA complexes during translation to an m-RNA transcribed by a DNA segment having the base sequence. 3' ATACCCATGGGG 5' Choose the answer showing the correct order of alphabets-
A)
A, B, C, D
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B)
D, A, B, C
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C)
A, B, D, C
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D)
B, A, C, D
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De Vries gave his mutation theory on organic evolution while working on -
A)
Althea rosea
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B)
Drosophila melangaster
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C)
Oenothera lamarckiana
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D)
Pisum sativum
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When two related populations occupy geographically or spatially separate areas, they are called -
A)
Allopatric population
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B)
Quantum population
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C)
Saltational population
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D)
Parapatric population
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Which of the following is a correct match for connecting link between two phyla?
A)
Archeopteryx - aves and mammalian
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B)
Amphioxus - echinodermata and chordate
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C)
Ornithorhynchus - aves and reptilia
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D)
Peripatus - annelida and arthopoda
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Convergent evolution is illustrated by -
A)
Rat and dog
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B)
Bacterium and protozoan
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C)
Starfish and cutle fish
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D)
Dogfish and whale
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According to chemisomotic theory of P. Mitchell (1978), ATPs are synthesised on membrance due to the -
A)
Proton gradient
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B)
Electron gradient
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C)
Osmosis
done
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D)
From \[{{H}_{2}}S{{O}_{4}}\]
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View Answer play_arrow
The major product (Z) can be: 
A and B are: 
