A choke coil is a :-
A)
High resistance and low inductance coil
done
clear
B)
Low resistance and high inductance coil
done
clear
C)
Low resistance and low inductance coil
done
clear
D)
High resistance and high inductance coil
done
clear
View Answer play_arrow
Rutherford experiment of a-scattering is related to the size of the :-
A)
Nucleus
done
clear
B)
Atom
done
clear
C)
Electron
done
clear
D)
Neutron
done
clear
View Answer play_arrow
A couple of \[{{10}^{5}}N-m\]is applied to a flywheel of mass 10 kg and radius of gyration 50m. Then the angular acceleration of the wheel is (in\[rad/{{s}^{2}}\])
A)
200
done
clear
B)
50
done
clear
C)
10
done
clear
D)
4
done
clear
View Answer play_arrow
If L, Q and R represents the inductance, charge and resistance respectively then the units of :-
A)
\[\frac{QR}{L}\] will be of current
done
clear
B)
\[\frac{{{Q}^{2}}{{R}^{3}}}{{{L}^{3}}}\] will be of energy
done
clear
C)
\[\frac{QL}{R}\] will be of current
done
clear
D)
\[\frac{{{Q}^{3}}{{R}^{2}}}{L}\] will be of power
done
clear
View Answer play_arrow
A charge Q \[\mu C\] is placed at the center of a cube, the flux coming out from any surface will be :-
A)
\[\frac{Q}{6{{\varepsilon }_{0}}}\times {{10}^{-6}}\]
done
clear
B)
\[\frac{Q}{6{{\varepsilon }_{0}}}\times {{10}^{-3}}\]
done
clear
C)
\[\frac{Q}{24{{\varepsilon }_{0}}}\]
done
clear
D)
\[\frac{Q}{8{{\varepsilon }_{0}}}\]
done
clear
View Answer play_arrow
A particle starts motion from rest with uniform acceleration. It travels S distance in first t time then distance travelled in next 3 time is :-
A)
3S
done
clear
B)
9S
done
clear
C)
15S
done
clear
D)
16S
done
clear
View Answer play_arrow
Consider two process A and B on a system as shown in the figure let \[\Delta {{W}_{1}}\] and \[\Delta {{W}_{2}}\] be the work done by the system in the process A and B respectively then:-
A)
\[\Delta {{W}_{1}}>\Delta {{W}_{2}}\]
done
clear
B)
\[\Delta {{W}_{1}}<\Delta {{W}_{2}}\]
done
clear
C)
\[\Delta {{W}_{1}}=\Delta {{W}_{2}}\]
done
clear
D)
Nothing can be said about the relation between \[\Delta {{W}_{1}}\] and \[\Delta {{W}_{2}}\]
done
clear
View Answer play_arrow
A ring takes \[{{t}_{1}}\] second in rolling down an inclined plane without slipping. The same ring \[{{t}_{2}}\] second in sliding down without rolling on a similar but frictionless inclined plane. Then the ratio \[{{t}_{1}}:{{t}_{2}}\] is
A)
\[1:\sqrt{2}\]
done
clear
B)
\[\sqrt{2}:1\]
done
clear
C)
\[1:2\]
done
clear
D)
\[2:1\]
done
clear
View Answer play_arrow
The weight of an object in the coal mine, sea level, at the top of the mountain are \[{{w}_{1}},{{w}_{2}}\] and \[{{w}_{3}}\]respectivley, then -
A)
\[{{w}_{1}}<{{w}_{2}}>{{w}_{3}}\]
done
clear
B)
\[{{w}_{1}}={{w}_{2}}={{w}_{3}}\]
done
clear
C)
\[{{w}_{1}}<{{w}_{2}}<{{w}_{3}}\]
done
clear
D)
\[{{w}_{1}}>{{w}_{2}}>{{w}_{3}}\]
done
clear
View Answer play_arrow
A particle is projected with initial speed u. At the top most point its speed is \[\frac{u}{2}\] then maximum height attained by it is :-
A)
\[\frac{{{u}^{2}}}{8\,g}\]
done
clear
B)
\[\frac{3\,{{u}^{2}}}{8\,g}\]
done
clear
C)
\[\frac{{{u}^{2}}}{2\,g}\]
done
clear
D)
\[\frac{{{u}^{2}}}{\,g}\]
done
clear
View Answer play_arrow
In order to increase the temperature of the gas filled in a closed vassel by \[{{0.5}^{o}}C\]its pressure is increased by 2%. The initial temperature of the gas is :-
A)
\[400\text{ }K~\]
done
clear
B)
\[250\text{ }K\]
done
clear
C)
\[25\text{ }K\]
done
clear
D)
\[-248\text{ }K\]
done
clear
View Answer play_arrow
The period of oscillation of a ring oscillating about an axis passing throngs its rim is 1 second If \[g={{\pi }^{2}},\]then the length of the equivalent simple pendulum will be:-
A)
\[0.25\,m\]
done
clear
B)
\[0.5\text{ }m\]
done
clear
C)
\[0.75\text{ }m\]
done
clear
D)
\[\text{1}\text{.0 }m\]
done
clear
View Answer play_arrow
Which is not the correct relation between different current gain \[(\alpha ,\beta ,\gamma )\] of transistor amplifier:-
A)
\[\alpha =\frac{\beta }{\beta +1}\]
done
clear
B)
\[\beta =\frac{\alpha }{1-\alpha }\]
done
clear
C)
\[\beta =\gamma +1\]
done
clear
D)
\[\alpha =\frac{\beta }{\gamma }\]
done
clear
View Answer play_arrow
A particle falls towards the earth from infinity its velocity on reaching the earth would be-
A)
Infinite
done
clear
B)
\[{{(gR)}^{1/2}}\]
done
clear
C)
\[{{(2gR)}^{1/2}}\]
done
clear
D)
gR
done
clear
View Answer play_arrow
Figure shows the time-displacement of particles P and Q. The relative speed of P w.r.t. Q is :-
A)
zero
done
clear
B)
Increasing
done
clear
C)
Decreasing
done
clear
D)
constant but non-zero
done
clear
View Answer play_arrow
\[p-V\]plots for two gases during adiabatic Processes are shown in the figure. Plots 1 and 2 should correspond respectively to :-
A)
\[He\]and \[{{O}_{2}}\]
done
clear
B)
\[{{O}_{2}}\] and \[He\]
done
clear
C)
\[He\] and\[Ar\]
done
clear
D)
\[{{O}_{2}}\] and N
done
clear
View Answer play_arrow
A particle is executing SHM according to the equation \[x=A\,\sin (\omega t+\phi ).\]. At any time t, it is found that the total phase of the particle is \[\frac{7\pi }{6}\] then the particle is at :-
A)
\[x=A/2\]and moving in \[+\text{ }x\]direction
done
clear
B)
\[x=-A/2\]and moving in \[-\text{ }x\]direction
done
clear
C)
\[x=A/2\]and moving in \[-\text{ }x\] direction
done
clear
D)
\[x=-A/2\]and moving in \[-\text{ }x\]direction
done
clear
View Answer play_arrow
In the given circuit, the current is :-
A)
\[1.0\text{ }A\]from A to C via B
done
clear
B)
\[1.0\text{ }A\] from C to A via B
done
clear
C)
\[3.0\text{ }A\]from A to C via B
done
clear
D)
\[3.0\text{ }A\] from C to A via B
done
clear
View Answer play_arrow
A particle is moving with constant acceleration. It's path
A)
Must be linear
done
clear
B)
Must be curved
done
clear
C)
May be curved
done
clear
D)
May be circular
done
clear
View Answer play_arrow
Which statement is not correct :-
A)
Rough surface is good radiator than smooth surface
done
clear
B)
Mirror is a good thermal radiator
done
clear
C)
Black body is good radiator than white body
done
clear
D)
White body absorbs less radiation than black body
done
clear
View Answer play_arrow
A simple oscillator has an amplitude A and time period T. The time required by it to travel from x = A to \[x=\frac{A}{2}\] is :-
A)
\[\frac{T}{2}\]
done
clear
B)
\[\frac{T}{3}\]
done
clear
C)
\[\frac{T}{4}\]
done
clear
D)
\[\frac{T}{6}\]
done
clear
View Answer play_arrow
Poyinting vector is :-
A)
\[\frac{1}{2}(\vec{E}\times \vec{H})\]
done
clear
B)
\[\frac{1}{2}{{E}^{2}}{{E}_{0}}\]
done
clear
C)
\[\vec{E}\times \vec{B}\]
done
clear
D)
\[\frac{1}{2}(\vec{E}\times \vec{B})\]
done
clear
View Answer play_arrow
When two resistance are connected in parallel then the equivalent resistance is \[\frac{6}{5}\Omega \] When one of the resistance is removed then the effective resistance is \[2\,\Omega \]. The resistance of the wire removed will be :-
A)
\[3\,\Omega \]
done
clear
B)
\[2\,\Omega \]
done
clear
C)
\[\frac{3}{5}\Omega \]
done
clear
D)
\[\frac{6}{5}\Omega \]
done
clear
View Answer play_arrow
According to the De Broglie, the radius of nth Bohr electron orbits is :- (\[\lambda \]= wavelength of ele.)
A)
\[\frac{n\lambda }{4}\]
done
clear
B)
\[\frac{n\lambda }{2\pi }\]
done
clear
C)
\[n\lambda \]
done
clear
D)
\[2n\lambda \]
done
clear
View Answer play_arrow
While measuring thermal conductivity of a liquid, we keep the upper part hot and lower part cold, so that :-
A)
Radiation may start
done
clear
B)
Radiation may stop
done
clear
C)
Convection may start
done
clear
D)
Convection may be stopped
done
clear
View Answer play_arrow
A coil of number of turn N, radius R is carrying current I have the value of magnetic field \[{{B}_{0}}\] at the centre. The value of magnetic field at the axis of that coil at the point which is very far away (X>>R) from the centre is proportional to :-
A)
\[\frac{1}{X}\]
done
clear
B)
\[\frac{1}{{{X}^{2}}}\]
done
clear
C)
\[\frac{1}{{{X}^{3}}}\]
done
clear
D)
\[\frac{1}{{{X}^{4}}}\]
done
clear
View Answer play_arrow
The potential difference between the plates of \[4.5\mu F\] capacitor in the following circuit will be:-
A)
\[\frac{8}{3}\] volt
done
clear
B)
4 volt
done
clear
C)
6 volt
done
clear
D)
8 volt
done
clear
View Answer play_arrow
The potential difference applied to an X-ray tube is \[10k\,V\] and the current through it is\[6.4\text{ }mA\]. The number of electrons striking the target per second is
A)
\[4\times {{10}^{16}}\]
done
clear
B)
\[2\times {{10}^{12}}\]
done
clear
C)
\[3\times {{10}^{14}}\]
done
clear
D)
\[4\times {{10}^{12}}\]
done
clear
View Answer play_arrow
If the percentage error in the measurement of radius of a sphere is 2%, then the maximum percentage errors in the measurements of its diameter, surface area and volume are respectively
A)
2%, 4% and 4 %
done
clear
B)
6%, 4% and 2%
done
clear
C)
6%, 6% and 6%
done
clear
D)
2%, 4% and 6%
done
clear
View Answer play_arrow
A co-axial cable which carrying equal current in opposite direction have cross section as shown in diagram. If \[{{B}_{1}}\] and \[{{B}_{2}}\] are the magnetic field at inner and outer point of cable then which relation is correct:-
A)
\[{{B}_{1}}=0,\,{{B}_{2}}=0\]
done
clear
B)
\[{{B}_{1}}\ne 0,\,{{B}_{2}}\ne 0\]
done
clear
C)
\[{{B}_{1}}=0,\,{{B}_{2}}\ne 0\]
done
clear
D)
\[{{B}_{1}}\ne 0,\,{{B}_{2}}=0\]
done
clear
View Answer play_arrow
A fixed source of souna emitting a certain frequency appears at \[{{f}_{a}}\] when the observer is approaching the source with speed \[{{v}_{0}}\] and frequency\[{{f}_{r}}\]. when the observer recedes from the source with the same speed. The frequency of the source is :-
A)
\[\frac{{{f}_{a}}+{{f}_{r}}}{2}\]
done
clear
B)
\[\frac{{{f}_{a}}-{{f}_{r}}}{2}\]
done
clear
C)
\[\sqrt{{{f}_{a}}{{f}_{r}}}\]
done
clear
D)
\[\frac{2{{f}_{r}}{{f}_{a}}}{{{f}_{r}}+{{f}_{a}}}\]
done
clear
View Answer play_arrow
If V is the potential difference between the plates of parallel plate capacitor and d is seperation between plates, then the electrostatics energy per unit volume is :-
A)
\[{{\varepsilon }_{0}}\frac{{{V}^{2}}}{{{d}^{2}}}\]
done
clear
B)
\[\frac{1}{2}{{\varepsilon }_{0}}\frac{{{V}^{2}}}{{{d}^{2}}}\]
done
clear
C)
\[\frac{{{\varepsilon }_{0}}{{V}^{2}}}{2d}\]
done
clear
D)
\[\frac{{{\varepsilon }_{0}}V}{2d}\]
done
clear
View Answer play_arrow
When radiations of wavelength \[3000\overset{\text{o}}{\mathop{\text{A}}}\,\] are incident on a photosensitive surface, the kinetic energy of electrons is\[2.5\text{ }eV\]. The stopping potential for radiations of wavelength \[1500\overset{\text{o}}{\mathop{\text{A}}}\,\] will be :-
A)
\[{{V}_{s}}=2.5\,V\]
done
clear
B)
\[{{V}_{s}}=5.0\,V\]
done
clear
C)
\[2.5\le {{V}_{s}}\le 5.0V\]
done
clear
D)
\[{{V}_{s}}>5.0V\]
done
clear
View Answer play_arrow
What will be the colour of sky as seen from the earth, if there were no atmosphere :-
A)
Black
done
clear
B)
Blue
done
clear
C)
Orange
done
clear
D)
Red
done
clear
View Answer play_arrow
For a magnetic material graph between intensity of magnetisation \[(\vec{I})\] and magnetic intensity \[(\vec{H})\] is as shown in diagram :-
Then material is :-
A)
Diamagnetic
done
clear
B)
Paramagnetic
done
clear
C)
Feromagnetic
done
clear
D)
All
done
clear
View Answer play_arrow
For shown situation the tension \[{{T}_{2}}\] is :-
A)
\[\frac{2{{m}_{1}}{{m}_{3}}g}{{{m}_{1}}+{{m}_{2}}+{{m}_{3}}}\]
done
clear
B)
\[\frac{2{{m}_{1}}{{m}_{2}}g}{{{m}_{1}}+{{m}_{2}}+{{m}_{3}}}\]
done
clear
C)
\[\frac{4{{m}_{1}}{{m}_{2}}g}{{{m}_{1}}+{{m}_{2}}+{{m}_{3}}}\]
done
clear
D)
zero
done
clear
View Answer play_arrow
Which bulb takes maximum current from supply.
A)
25 W
done
clear
B)
40 W
done
clear
C)
100 W
done
clear
D)
All takes same current
done
clear
View Answer play_arrow
A radioactive sample has \[2\times {{10}^{10}}\]active nuclei at\[t=0\]. Its half life is 7 days. How much nuclei will disintegrate in 14 days:-
A)
\[0.5\times {{10}^{10}}\]
done
clear
B)
\[1.5\times {{10}^{10}}\]
done
clear
C)
\[{{10}^{10}}\]
done
clear
D)
\[0.25\times {{10}^{10}}\]
done
clear
View Answer play_arrow
A prism ABC of angle \[30{}^\circ \] has its face AC silvered. A ray of light incident at an angle of \[{{45}^{o}}\] at the face AB retraces its path after refraction at face AB and reflection at face AC. The refractive index of the material of the prism is :-
A)
\[1.5\]
done
clear
B)
\[\frac{3}{\sqrt{2}}\]
done
clear
C)
\[\sqrt{2}\]
done
clear
D)
\[\frac{4}{3}\]
done
clear
View Answer play_arrow
Current in a coil changes at a constant rate of 2A in 50ms. A back-emf of 4V is induced in the coil. What is the self inductance of the coil:-
A)
\[0.025\text{ }H\]
done
clear
B)
\[0.10\text{ }H\]
done
clear
C)
\[0.40\text{ }H\]
done
clear
D)
\[40\text{ }H\]
done
clear
View Answer play_arrow
Two smooth objects with a coefficient of restitution e, collides directly and bounce as shown :- just before impact
just after impact
Newton's law of restitution gives:-
A)
\[{{v}_{1}}=3\,eu\]
done
clear
B)
\[u=3\,e{{v}_{1}}\]
done
clear
C)
\[{{v}_{1}}=2\,eu\]
done
clear
D)
It cannot be applied as the masses are not known
done
clear
View Answer play_arrow
Alternating current or e.m.f. measuring instruments measure its :-
A)
Peak value
done
clear
B)
rms value
done
clear
C)
Average value
done
clear
D)
None of the above
done
clear
View Answer play_arrow
Calculate the binding energy of \[_{7}{{N}^{14}}\] from the following data :- \[{{m}_{H}}=1.00783\]u = mass of hydrogen atom \[{{m}_{n}}=1.00867\]u = mass of a free neutron \[{{m}_{N}}=14.00307\]u = mass of an atom of N14
A)
\[104.7\text{ }MeV\]
done
clear
B)
\[8.8\text{ }MeV\]
done
clear
C)
\[100\text{ }J\]
done
clear
D)
\[15.5\text{ }MeV\]
done
clear
View Answer play_arrow
For the myopic eye, the defect is cured by :-
A)
Convex lens
done
clear
B)
Concave lens
done
clear
C)
Cylindrical lens
done
clear
D)
Toric lens
done
clear
View Answer play_arrow
An aluminum ring hangs vertically from a thread with its axis pointing east-west. A coil is fixed near to the ring and coaxial with its :-
What is the initial motion of the aluminum ring when the current in the coil is switched on?
A)
Remains at rest
done
clear
B)
Moves towards S
done
clear
C)
Moves towards W
done
clear
D)
Moves towards E
done
clear
View Answer play_arrow
At low pressure, Vander Waal's equation is reduced to\[\left( P+\frac{a}{V_{m}^{2}} \right)\,\,{{V}_{m}}=RT\]. The compressibility factor can be given as :-
A)
\[1-\frac{a}{{{V}_{m}}RT}\]
done
clear
B)
\[1+\frac{a}{{{V}_{m}}12T}\]
done
clear
C)
\[1-\frac{RT{{V}_{m}}}{a}\]
done
clear
D)
\[1+\frac{RT{{V}_{m}}}{a}\]
done
clear
View Answer play_arrow
pH of a\[~0.1M\] monobasic acid is found to be 2. Hence its osmotic pressure at a given temperature TK is:-
A)
\[0.1RT\]
done
clear
B)
\[0.11\text{ }RT\]
done
clear
C)
\[1.1\text{ }RT\]
done
clear
D)
\[0.01\text{ }RT\]
done
clear
View Answer play_arrow
Lanthanide for which + II and + III oxidation state are common is :-
A)
\[Ce\]
done
clear
B)
\[Lu\]
done
clear
C)
\[La\]
done
clear
D)
\[Eu\]
done
clear
View Answer play_arrow
Heavy water is :-
A)
Water containing ions of the salt of heavy metal
done
clear
B)
Water at \[4{}^\circ C\]
done
clear
C)
Water containing sulphates of calcium and magnesium
done
clear
D)
Deuterium oxide
done
clear
View Answer play_arrow
Approximate atomic weight of an element is \[26.9\] and its equivalent weight is \[8.9\]. Then find out the exact atomic weight of an element :-
A)
\[16.7\]
done
clear
B)
\[26.7\]
done
clear
C)
\[36.7\]
done
clear
D)
\[46.7\]
done
clear
View Answer play_arrow
A sample of air contains only \[{{N}_{2}},{{O}_{2}}\] and \[{{H}_{2}}O.\] It is saturated with water vapour and the total pressure is 640 torr. the vapour pressure of water is 40 torr and the molar ratio of \[{{N}_{2}}:{{O}_{2}}\] is \[3:1\]. The partial pressure of \[{{N}_{2}}\] in the sample is :-
A)
480 torr
done
clear
B)
600 torr
done
clear
C)
525 torr
done
clear
D)
450 torr
done
clear
View Answer play_arrow
Which of the following is less than zero for ideal solutions :-
A)
\[\Delta {{H}_{mix}}\]
done
clear
B)
\[\Delta {{V}_{mis}}\]
done
clear
C)
\[\Delta {{G}_{mix}}\]
done
clear
D)
\[\Delta {{S}_{mix}}\]
done
clear
View Answer play_arrow
Which of the following pair of substance on reaction will not produce hydrogen gas :-
A)
\[Fe+dil.\,\,{{H}_{2}}S{{O}_{4}}\]
done
clear
B)
\[Cu+dil\text{ }HCl\]
done
clear
C)
\[Na+ethylalcohol\]
done
clear
D)
Iron + steam
done
clear
View Answer play_arrow
Igm metal carbonate on strong heating gives \[0.56\text{ }gm\]metal oxide. Then find out the equivalent weight of metal :-
A)
40
done
clear
B)
30
done
clear
C)
10
done
clear
D)
20
done
clear
View Answer play_arrow
Energy change is x when an electron show transition from \[n=1\]to \[n=2\]in \[H{{e}^{+}}.\] Then find out the energy change when dectron show transition from \[n=2\]to \[n=4\]:-
A)
\[\frac{x}{4}\]
done
clear
B)
\[\frac{x}{3}\]
done
clear
C)
\[\frac{x}{12}\]
done
clear
D)
\[\frac{3x}{4}\]
done
clear
View Answer play_arrow
On Adding \[AgN{{O}_{3}}\]solution into KI solution, a negatively charged colloidal sol is obtained when they are in:-
A)
\[100\text{ }ml\]of \[0.1\text{ }M\text{ }AgN{{O}_{3}}+100\text{ }ml\]of \[0.2\text{ }M\text{ }KI\]
done
clear
B)
\[100\text{ }ml\]of \[0.1\text{ }M\text{ }AgN{{O}_{3}}+50\text{ }ml\text{ }\]of \[0.2\text{ }M\text{ }KI\]
done
clear
C)
\[100\text{ }ml\]of \[0.2\text{ }M\text{ }AgN{{O}_{3}}+100\text{ }ml\]of \[0.1M\,KI\]
done
clear
D)
\[100\,\,ml\]of \[0.1M\text{ }AgN{{O}_{3}}+100\,ml\]of \[0.015\text{ }M\,KI\]
done
clear
View Answer play_arrow
Ink contains \[F{{e}^{+3}}\] spot of ink can be removed by addition of \[{{C}_{2}}{{O}_{4}}^{-2}.\] . Complex formed is:-
A)
\[{{[Fe{{({{C}_{2}}{{O}_{4}})}_{6}}]}^{-3}}\]
done
clear
B)
\[{{[Fe{{({{C}_{2}}{{O}_{4}})}_{3}}]}^{-3}}\]
done
clear
C)
\[{{[Fe{{({{C}_{2}}{{O}_{4}})}_{3}}]}^{-2}}\]
done
clear
D)
\[{{[Fe{{({{C}_{2}}{{O}_{4}})}_{3}}]}^{-4}}\]
done
clear
View Answer play_arrow
Which of the following substances does not produces ammonia on reaction with water :-
A)
AIN
done
clear
B)
\[CaC{{N}_{2}}\]
done
clear
C)
\[Ca{{(CN)}_{2}}\]
done
clear
D)
\[M{{g}_{2}}{{N}_{2}}\]
done
clear
View Answer play_arrow
A coating of cobalt that is \[0.005\text{ }cm\]thick is deposited on a plate, that is \[0.5\text{ }m\]in area. How many atoms of cobalt were deposited on the plate. While density of cobalt is \[9.5\text{ }gm/cm\]. (Atomic weight of cobalt = 59)
A)
\[24\times {{10}^{23}}\]
done
clear
B)
\[~2.4\times {{10}^{23}}\]
done
clear
C)
\[1.0\times {{10}^{23~}}\]
done
clear
D)
\[0.024\times {{10}^{23}}\]
done
clear
View Answer play_arrow
Calculate the second ionization potential of \[L{{i}^{+}}\]
A)
\[112.4eV\]
done
clear
B)
\[122.4\text{ }eV\]
done
clear
C)
\[244.8\text{ }eV\]
done
clear
D)
\[61.2\text{ }eV\]
done
clear
View Answer play_arrow
Which of the following forms a lyophobic colloidal solution in water :-
A)
\[NaCl\]
done
clear
B)
Glucose
done
clear
C)
Starch
done
clear
D)
\[Fe{{[OH]}_{3}}\]
done
clear
View Answer play_arrow
Potassium diamminedicyano, sulphatosuperoxoplatinate (IV) is :-
A)
\[K\,[Pt{{(CN)}_{2}}\,{{(O)}_{2}}\,(S{{O}_{4}})\,{{(N{{H}_{3}})}_{2}}]\]
done
clear
B)
\[{{K}_{4}}\,[Pt\,{{(N{{H}_{3}})}_{2}}\,{{(CN)}_{2}}\,(S{{O}_{4}})\,({{O}_{2}})]\]
done
clear
C)
\[{{K}_{2}}\,[Pt\,{{(N{{H}_{3}})}_{2}}\,{{(CN)}_{2}}\,(S{{O}_{4}})\,({{O}_{2}})]\]
done
clear
D)
\[{{K}_{3}}\,[Pt\,{{(N{{H}_{3}})}_{2}}\,{{(CN)}_{2}}\,(S{{O}_{4}})\,({{O}_{2}})]\]
done
clear
View Answer play_arrow
2 mol of an ideal gas at \[{{25}^{o}}C\]is subgeeted to emp and isothermally and reversibly 10 times of its initial volume. Then find out entropy change of enpansion.
A)
\[9.2\text{ }cal/k\]
done
clear
B)
\[~8.2\text{ }cal/k\]
done
clear
C)
\[7.2\text{ }cal/k\]
done
clear
D)
\[10.2\text{ }cal/k\]
done
clear
View Answer play_arrow
If an electron moves with a velocity of \[3\times {{10}^{4}}\text{ }cm/sec\]accurate up to 0.001 %. Then find out uncertainity in its position :-
A)
\[1.7\times {{10}^{2}}cm\]
done
clear
B)
\[9.7\text{ }cm\]
done
clear
C)
\[9.7\times {{10}^{3}}cm\]
done
clear
D)
\[1.7\text{ }cm\]
done
clear
View Answer play_arrow
Pentavalence in phosphorous is more stable compared to that of nitrogen even though they belong to same group this is due to :-
A)
Reactivity of phosphorous
done
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B)
Larger size of phosphorous
done
clear
C)
Inert nature of nitrogen
done
clear
D)
Dissimilar electronic configuration
done
clear
View Answer play_arrow
Which represents corres."order of stability of metallic ions :-
A)
\[F{{e}^{+2}}<F{{e}^{+3}}\]
done
clear
B)
\[C{{r}^{+2}}<C{{r}^{+3}}\]
done
clear
C)
\[G{{a}^{+}}<G{{a}^{+3}}\]
done
clear
D)
All of these
done
clear
View Answer play_arrow
The hybrid state and oxidation state of oxygen atom in protiun oxide are respectively :-
A)
\[s{{p}^{2}},-1\]
done
clear
B)
\[s{{p}^{3}},-2\]
done
clear
C)
\[s{{p}^{2}},-2\]
done
clear
D)
\[s{{p}^{3}},-1\]
done
clear
View Answer play_arrow
1 mol of anhydrous \[MgC{{l}_{2\,(s)}}\] dissolve in water and e liberate 25cal. Heat of hydration of \[MgC{{l}_{2}}\](s) is \[-30\]Cal. Then calculate heat of solution of \[MgC{{l}_{2}}\]. \[2{{H}_{2}}O\](s) :-
A)
\[55\text{ }cal/mol\]
done
clear
B)
\[~+5\text{ }cal/mol\]
done
clear
C)
\[-5\text{ }cal/mol\]
done
clear
D)
\[-55\text{ }cal/mol\]
done
clear
View Answer play_arrow
If element with principle quantum number more than 4 is not possible in nature. Then number of possible elements will be :-
A)
60
done
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B)
45
done
clear
C)
65
done
clear
D)
62
done
clear
View Answer play_arrow
Which of the following oxy acid produces most stable anion :-
A)
\[HClO\]
done
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B)
\[HCl{{O}_{3}}\]
done
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C)
\[HCl{{O}_{4}}\]
done
clear
D)
\[HCl{{O}_{2}}\]
done
clear
View Answer play_arrow
Thermite is a mixture of iron oxide and :-
A)
\[Zn\]
done
clear
B)
\[Na\]
done
clear
C)
\[Al\]
done
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D)
\[C\]
done
clear
View Answer play_arrow
How much heat is produced when \[4.5\text{ }gm\]\[C{{H}_{4}}\] is burnt in a constant pressure according to reaction \[C{{H}_{4}}+2{{O}_{2}}\to C{{O}_{2}}+2{{H}_{2}}O.\,\,\Delta H=-802\,KJ\]
A)
\[-25\text{ }KJ\]
done
clear
B)
\[-125\text{ }KJ\]
done
clear
C)
\[-225\text{ }KJ\]
done
clear
D)
\[-325\text{ }KJ\]
done
clear
View Answer play_arrow
In a calcium fluoride structure the Co - ordination no. of cation and anion is respectively:-
A)
6, 6
done
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B)
8, 4
done
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C)
4, 4
done
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D)
8, 3
done
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View Answer play_arrow
The oxide which cannot act as reducing agent :-
A)
\[S{{O}_{2}}\]
done
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B)
\[N{{O}_{2}}\]
done
clear
C)
\[Pb{{O}_{2}}\]
done
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D)
\[Cl{{O}_{2}}\]
done
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View Answer play_arrow
Solution of sodium metal in liquid ammonia is strongly reducing due to the presence in the solution of the following :-
A)
Sodium hydride
done
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B)
Sodium amide
done
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C)
Solvated electron
done
clear
D)
Sodium atom
done
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View Answer play_arrow
\[{{H}_{2}}{{O}_{2}}\] can act as :-
A)
Acid
done
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B)
Oxidant
done
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C)
Reductant
done
clear
D)
All of the above
done
clear
View Answer play_arrow
Consider a system consisting of 1 mol of a diatomic gas. What is the temperature change of the gas, if leat absorb by system is \[50\text{ }J\]and work done by system is \[100\text{ }J\].(while\[({{C}_{V}}=5/2\text{ }R)\])
A)
\[-2.4\text{ }K\]
done
clear
B)
\[-3.4\text{ }K\]
done
clear
C)
\[-4.4K\]
done
clear
D)
\[-1.2K\]
done
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View Answer play_arrow
The number of atoms in \[100\,g\]of a FCC crystal with density \[d=10\text{ }g/c{{m}^{3}}\]and cell edge as 200 pm is equal to:-
A)
\[3\times {{10}^{25}}\]
done
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B)
\[5\times {{10}^{24}}\]
done
clear
C)
\[1\times {{10}^{25}}\]
done
clear
D)
\[2\times {{10}^{25}}\]
done
clear
View Answer play_arrow
What is not applicable to \[TeC{{l}_{4}}\] :-
A)
The hybrid state of \[Te\]is \[s{{p}^{3}}d\]
done
clear
B)
It react with \[HCl\]to form\[{{H}_{2}}TeC{{l}_{6}}\]
done
clear
C)
It is tetrahedral in shape
done
clear
D)
Unequal bond length
done
clear
View Answer play_arrow
By-product of ammonia soda process (solvay process):-
A)
\[CaO\]
done
clear
B)
\[CaC{{l}_{2}}\]
done
clear
C)
\[NaHC{{O}_{3}}\]
done
clear
D)
\[N{{a}_{2}}C{{O}_{3}}\]
done
clear
View Answer play_arrow
The structure of hydrogen perexide molecule is :-
A)
Closed book like
done
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B)
Half open book like
done
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C)
Linear
done
clear
D)
Cyclic
done
clear
View Answer play_arrow
Calculate the work done of \[22gm\,\,C{{O}_{2}}\]gas that expands reversibly and adiabaticaly at 500ml and 300 K to 4 lit (if\[y=4/3\])
A)
\[-350\text{ }cal.\]
done
clear
B)
\[-450\text{ }cal~\]
done
clear
C)
\[+350\text{ }cal.\]
done
clear
D)
\[+450\text{ }cal\]
done
clear
View Answer play_arrow
Y gm. of a non-volatile substance (molecular mass M) is dissolved in 250 gm of benzene. If \[{{K}_{b}}\] is the molal elevation constant the value of \[\Delta {{T}_{b}}\] is given by :-
A)
\[4M/{{K}_{b}}\,Y\]
done
clear
B)
\[4{{K}_{b}}.\,Y/M\]
done
clear
C)
\[{{K}_{b}}.\,Y/4M\]
done
clear
D)
\[{{K}_{b}}.\,Y/M\]
done
clear
View Answer play_arrow
Which of the following does not contain any coordinate bond :-
A)
\[{{H}_{3}}{{O}^{+}}\]
done
clear
B)
\[HF_{2}^{-}\]
done
clear
C)
\[NaB{{F}_{4}}\]
done
clear
D)
\[N{{H}_{4}}Cl\]
done
clear
View Answer play_arrow
Consider the following statement :-
A. Potassium is more reactive than sodium B. Potassium is lighter than sodium C. Potassium is softer than sodium
Which of the above statement is/are true:-
A)
A only
done
clear
B)
B only
done
clear
C)
B and C
done
clear
D)
A, B and C
done
clear
View Answer play_arrow
Which element has gaseous allotropes :-
A)
S
done
clear
B)
C
done
clear
C)
p
done
clear
D)
O
done
clear
View Answer play_arrow
Calculate the work done when 1/2 gm iron reacts with \[HCl\]in an open vessel at\[{{27}^{o}}C\]:-
A)
\[-1200\text{ }cal\]
done
clear
B)
\[-600\text{ }cal\]
done
clear
C)
\[-400\text{ }cal\]
done
clear
D)
\[-2400\text{ }cal\]
done
clear
View Answer play_arrow
At the same temperature, which of the following pairs of solution could be isotonic :-
A)
\[0.1\text{ }M\text{ }NaCl\]and \[.1\text{ }M\text{ }N{{a}_{2}}S{{O}_{4}}\]
done
clear
B)
\[0.1M\,N{{a}_{2}}S{{O}_{4}}\]and \[0.1\,M\,Ca\,{{(N{{O}_{3}})}_{2}}\]
done
clear
C)
\[0.1\text{ }M\text{ }NaCl\]and \[0.1\text{ }M\]area
done
clear
D)
\[0.1\text{ }M\]Urea and\[0.2\text{ }M\text{ }MgC{{l}_{2}}\],
done
clear
View Answer play_arrow
Among the species given below, the largest bond angle around the central atom is in :-
A)
\[I_{3}^{-}\]
done
clear
B)
\[I_{3}^{+}\]
done
clear
C)
\[NO_{2}^{-}\]
done
clear
D)
\[{{H}_{2}}O\]
done
clear
View Answer play_arrow
The property of hydrogen which distinguished it from other alkali metal is :-
A)
Its affinity for non metal
done
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B)
Its reducing character
done
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C)
Its electropositive
done
clear
D)
Its non metallic character
done
clear
View Answer play_arrow
The volume of blood remain in ventricle at the end of ventricular systole is called as :-
A)
Stroke volume
done
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B)
End systolic volume
done
clear
C)
End diastolic volume
done
clear
D)
Cardiac output
done
clear
View Answer play_arrow
Trilobites were originated during :-
A)
Silurian
done
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B)
Cambrian
done
clear
C)
Precambrian
done
clear
D)
Devonian
done
clear
View Answer play_arrow
DNA is chemically less reactive than RNA due to :-
A)
DNA is double stranded
done
clear
B)
Absence of 2' OH group at every nucleotide in DNA
done
clear
C)
Presence of complementary base pairing
done
clear
D)
Presence of 2' OH group at every nucleotide in DNA
done
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View Answer play_arrow
In a maize plant two genes are closely located on chromosome which of the following statement is true- for offspring :-
A)
They show only parental combination
done
clear
B)
They show maximum recombination
done
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C)
They exhibit few new combination
done
clear
D)
They show only new combination
done
clear
View Answer play_arrow
Trochophore is the larva of :-
A)
Neopilina
done
clear
B)
Chiton
done
clear
C)
Nereis
done
clear
D)
All of the above
done
clear
View Answer play_arrow
An enzyme catalyzing the reaction Glucose \[6P\leftrightarrow \]fructose 6P would have an EC number with first digit:-
A)
2
done
clear
B)
4
done
clear
C)
5
done
clear
D)
None of the above
done
clear
View Answer play_arrow
Select the wrong pair :-
A)
ATP formation \[\to \] Chemiosmosis theory
done
clear
B)
Crossing over \[\to \] Meiosis
done
clear
C)
Photoperiodism \[\to \] Garner, allard
done
clear
D)
Ca-ABA second messanger theory\[\to \] stomatal opening
done
clear
View Answer play_arrow
Which of the following fungi belongs to class Duteromycetes :-
A)
Puccinia
done
clear
B)
Agaricus
done
clear
C)
Albugo
done
clear
D)
Trichoderma
done
clear
View Answer play_arrow
The stomach takes part in :-
A)
Breaking food mechanically
done
clear
B)
Partially digesting the food
done
clear
C)
Disinfecting the food
done
clear
D)
All of the above
done
clear
View Answer play_arrow
Which of these statement is correct :-
A)
All animals require a medium for cellular respiration
done
clear
B)
In all animals oxygen is transported by blood
done
clear
C)
All animals take \[{{O}_{2}}\] from water or air through gills or lungs
done
clear
D)
All living organism needs oxygen for respiration
done
clear
View Answer play_arrow
Genetic drift operates in :-
A)
Large population
done
clear
B)
Small population
done
clear
C)
Both a & b
done
clear
D)
None of these
done
clear
View Answer play_arrow
Criss-cross inheritance is seen in the inheritance of which of the following :-
A)
Baldness
done
clear
B)
Haemophilia
done
clear
C)
Down's syndrome
done
clear
D)
Thalassemia
done
clear
View Answer play_arrow
In a family father has V -nod group and child has B blood group then which of (he following genotype is not possible for child mother :-
A)
\[{{I}^{B}}{{I}^{B}}\]
done
clear
B)
\[{{I}^{A}}{{I}^{B}}\]
done
clear
C)
\[{{I}^{O}}{{I}^{B}}\]
done
clear
D)
\[{{I}^{A}}{{I}^{A}}\]
done
clear
View Answer play_arrow
Which one of the following is correct :-
A)
Arthropoda - Insecta - Spider
done
clear
B)
Platyhelminthes - Trematoda - Tape worm
done
clear
C)
Ctenophora - Nuda - Combjelly
done
clear
D)
Echinodermata - Holothuroidia - Sea urchin
done
clear
View Answer play_arrow
Which of the following organelles are found in both plant and animal cells :-
A)
Nucleus
done
clear
B)
Thylakoid
done
clear
C)
Lysosomes
done
clear
D)
Chloroplast
done
clear
View Answer play_arrow
Pigment chlorophyll located on :-
A)
Cristae
done
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B)
Stroma
done
clear
C)
Thylakoids
done
clear
D)
Inner membrane of chloroplast
done
clear
View Answer play_arrow
Which of the following algae show oogamous type of sexual reproduction :-
A)
Sargassum
done
clear
B)
Volvox
done
clear
C)
Fucus
done
clear
D)
All
done
clear
View Answer play_arrow
The urine under normal condition does not contain glucose because :-
A)
Glucose is a athreshold substance
done
clear
B)
Glucose of blood is not filtered in the glomerulus
done
clear
C)
Glucose in glomerular filtrate is converted into glycogen
done
clear
D)
Glucose is glomerular filtrate is reabsorbed in unmferous tubule
done
clear
View Answer play_arrow
During exercise when body temperature rise the oxyhaemoglobin dissociation curve will :-
A)
Shift to right
done
clear
B)
Shift to left
done
clear
C)
Remain constant
done
clear
D)
First shift left then right
done
clear
View Answer play_arrow
Homo erectus - erectus is zoological name of.
A)
Homo habilis
done
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B)
Australopithecus
done
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C)
Peking man
done
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D)
Java man
done
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View Answer play_arrow
Describe the expected polypeptide composition resulting from a regular copolymer experiment where the tetranucleotide CAUA was used : Given: - \[AUA-I\ell e\text{ };\text{ }UAC-Tyr\text{ };\text{ }ACA-Thr\text{ }CAU-H\]is
A)
\[Thr-Tyr-I\ell e-His\]
done
clear
B)
\[His-Thr-Tyr-I\ell e\]
done
clear
C)
\[His-Tyr-I\ell e-Thr\]
done
clear
D)
\[I\ell e-His-Thr-Tyr\]
done
clear
View Answer play_arrow
Natural insecticide is:-
A)
B.H.C.
done
clear
B)
Aldrin
done
clear
C)
Rotenone
done
clear
D)
Malathione
done
clear
View Answer play_arrow
Which of the following is characteristic feature of Sarcodina :-
A)
cilia
done
clear
B)
Contractile vacuole
done
clear
C)
Flagella
done
clear
D)
Pseudopodia
done
clear
View Answer play_arrow
Concept of water potantial was proposed by Slatyer and Taylor. Water potential is indicated by
A)
\[{{\Psi }_{p}}\]
done
clear
B)
\[{{\Psi }_{s}}\]
done
clear
C)
\[{{\Psi }_{\pi }}\]
done
clear
D)
\[\Psi \]
done
clear
View Answer play_arrow
Photorespiration is a wasteful process in plants because:-
A)
Photorespiration making high amount of sugar
done
clear
B)
In Photorespiration Acetyl CoA is oxidized
done
clear
C)
No production of any ATP in photorespiration
done
clear
D)
Photorespiration can release \[NAD{{H}_{2}}\]
done
clear
View Answer play_arrow
A relationship in which the parasitic bird (Cuckoo) lays its egg in the nest of its host (Crow) and lets the host incubate them, is known as :-
A)
Commensalism
done
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B)
Mutualism
done
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C)
Brood parasitism
done
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D)
Antagonism
done
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View Answer play_arrow
Hormone produced in allergic reaction is :-
A)
Nor-epinephrine
done
clear
B)
Epinephrine
done
clear
C)
Mineralocorticoides
done
clear
D)
Glucocorticoides
done
clear
View Answer play_arrow
Which type of jaw susspension is found in frog.
A)
Autostylic
done
clear
B)
Craniostylic
done
clear
C)
Amphistylic
done
clear
D)
Hyalostylic
done
clear
View Answer play_arrow
Globin protein in foetal haemoglobin is made up of:-
A)
\[2\alpha +2\beta \]
done
clear
B)
\[2\alpha +2\delta \]
done
clear
C)
\[2\alpha +2\gamma \]
done
clear
D)
\[2\beta +2\gamma \]
done
clear
View Answer play_arrow
In a m-RNA base composition is 5'AUG CAC GAG CUA ACA UAG CAC GUA3' On translation how many water molecules are released at the time of peptide bond formation.
A)
One
done
clear
B)
Two
done
clear
C)
Three
done
clear
D)
Four
done
clear
View Answer play_arrow
The chief advantage of vegetative propagation is that:-
A)
It is an ancient practice
done
clear
B)
It ensure that progeny are safe from the attack of disease
done
clear
C)
It enable rapid production of genetic variation
done
clear
D)
It is means of production of a population of individuals genetically identical to the parent
done
clear
View Answer play_arrow
Which statement is incorrect :-
A)
Companion cells play an important role in the maintenance of a pressure gradient in the sieve tubes
done
clear
B)
Tracheids are chief water transporting element in gymnosperms
done
clear
C)
Casparian strips are mainly made up of suberin
done
clear
D)
Well develop pith is found in dicot roots
done
clear
View Answer play_arrow
Before the discovery of which category of enzymes, it was assume that enzymes always biochemically made up globulor proteins :-
A)
Abzyme
done
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B)
Lysozyme
done
clear
C)
Extremozyme
done
clear
D)
Ribozyme
done
clear
View Answer play_arrow
An example of autonomic movement of variation is.
A)
Desmodium
done
clear
B)
Mimosa
done
clear
C)
Cacti
done
clear
D)
Radish
done
clear
View Answer play_arrow
Match the column I to II :
Column I Column II (a) Catalytic converter (i) Particulate matter (b) Electrostatic precipitator (ii) CO and NOx (c) Earmuffs pollution (iii) High noise (d) Land fills (iv) Thalamus and pericarp
A)
a=ii b=i c=iii d=iv
done
clear
B)
a=i b=ii c=iii d=iii
done
clear
C)
a=iv b=iii c=ii d=ii
done
clear
D)
a=ii b=iii c=iv d=ii
done
clear
View Answer play_arrow
Which statement is true :-
A)
In normal condition muscle of ciliary body remain contracted
done
clear
B)
To see near by object muscle fibres of ciliary body remain relaxed
done
clear
C)
In normal condition, the lens of eye is flat
done
clear
D)
In normal condition, the lens of eye is more convex
done
clear
View Answer play_arrow
Which one of the following is an example of first class lever :-
A)
Atlanto - occipetal joint
done
clear
B)
Atlanto - Axial joint
done
clear
C)
Human body resting on toes
done
clear
D)
Elbow joint
done
clear
View Answer play_arrow
Which match is correct :-
Fruit Edable part A. Cashewnut (i) Cotyledons B. Okra (ii) whole fruit C. Almond (iii) Cotyledons and Embryo D. Guava (iv) Thalamus and pericarp
A)
A - i B - ii C - iii D - iv
done
clear
B)
A - i B - ii C - iv D - iii
done
clear
C)
A - iv B - iii C - i D - ii
done
clear
D)
A - iii B - iv C - i D - ii
done
clear
View Answer play_arrow
Minimum number of gene located on which chromosome :-
A)
X-chromosome
done
clear
B)
Y-chromosome
done
clear
C)
Chromosome no.-I
done
clear
D)
Chromosome no.-II
done
clear
View Answer play_arrow
The inner most wall of pollensac of Angiosperm :-
A)
Gives mechanical support to anther
done
clear
B)
Helps in dehiscence of anther
done
clear
C)
Provides nutrition to developing microspores
done
clear
D)
Protects anther from predation
done
clear
View Answer play_arrow
Select correctly match :-
a. Viroids - ssRNA b. Mycophage - DsRNA c. Cyanophage - DsDNA d. AIDS virus - ssRNA
A)
Only a & b
done
clear
B)
Only a, b & c
done
clear
C)
Only b, c & d
done
clear
D)
All a, b, c, d
done
clear
View Answer play_arrow
Which plants lack Kranj Anatomy or Bundle sheath:-
A)
\[{{C}_{4}}\] plants
done
clear
B)
\[{{C}_{2}}\] plants
done
clear
C)
\[{{C}_{3}}\] plants
done
clear
D)
Hatch-Slack plant
done
clear
View Answer play_arrow
The field of science that deals with efforts to change the genetic characteristics of human by artificial selection is :-
A)
Euphenics
done
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B)
Euthenics
done
clear
C)
Eugenics
done
clear
D)
Taxonomy
done
clear
View Answer play_arrow
Bryophytes resemble algae on the following basis :-
A)
Differentiation of the plant body into root, stem and heterotrophic mode of nutrition
done
clear
B)
Thallus like plant body, lack of vascular tissue, absence of root and autotrophic mode of nutrition
done
clear
C)
Thallus like plant body, presence of roots and heterotrophic mode of nutrition
done
clear
D)
Filamentous body, presence of vascular tissue and autotrophic mode of nutrition
done
clear
View Answer play_arrow
Intercalated disc are present in which type of muscle:-
A)
Striped muscle
done
clear
B)
Involuntary muscle
done
clear
C)
Cardiac muscle
done
clear
D)
None of these
done
clear
View Answer play_arrow
Vibrissae of rabbit are :-
A)
Papillae upon skin
done
clear
B)
Skin webs between toes
done
clear
C)
Vibration - detecting organ
done
clear
D)
Pain receptor
done
clear
View Answer play_arrow
Which statement is correct about life cycle of Bombyx mori :-
A)
Female dies after it has laid the eggs
done
clear
B)
Its larva is called Grub
done
clear
C)
Larva eats more food and salivary glands are developed
done
clear
D)
Full grown imago is called Pupa
done
clear
View Answer play_arrow
Female heterogamy found in :-
A)
Birds
done
clear
B)
Drosophila
done
clear
C)
Human
done
clear
D)
Honey bee
done
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The embryosac is called monosporic when it develops from :-
A)
All the four megaspores
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B)
Two functional megaspores only
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C)
Three micropylar megaspores only
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D)
One of the four megaspore which becomes functional
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Which statement is correct :-
A)
Lichens multiply by soredia formation
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B)
Lichenin is a protein
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C)
Lichen term was given by frank
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D)
Algal component of Lichen is called mycobiont
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Vernalisation was discovered by :-
A)
Cajlachjan
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B)
Lysenko
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C)
Went
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D)
Chailakhyan
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In dendrochronology we measure :-
A)
The height of a tree
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B)
The diameter of a tree
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C)
The crown cover of a tree
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D)
The age of tree
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Evolutionary relationship of three major group of organisms is shown in the accompanying diagram, where X, Y, Z are Archebacteria, Eubacteria and Cyanobacteria respectively. The Anabaena will be placed :-
A)
On branch X
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B)
On branch Y
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C)
On branch Z
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D)
On branch X or on branch Z
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Which type of joint found between incus and stapes:-
A)
Hing joint
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B)
Ball and Socket joint
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C)
Sinovial joint
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D)
None of the above
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Coiled tubular glands are located in :-
A)
Villi
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B)
Skin dermis
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C)
Skin epidermis
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D)
Seminiferous tubules
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Which path of blood flow can not possible in Earthworm :-
A)
Dorsal vessel - I ateral heart
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B)
Lateral Oesophageal vessel - Anterior loops
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C)
Ventral vessel - Ventro integumentary vessel
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D)
Dorsal vessel - Dorso intestinal vessel
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In which type of inheritance maximum number of intermediates are formed :-
A)
Polygenic inheritance
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B)
Maternal inheritance
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C)
Monogenic inheritance
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D)
Cytoplasmic inheritance
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After pollination, pollen grains in many taxa fails to bring fertilization of ovule in the same plant resulting in the failure of embryo and seed development. This phenomenon is called :-
A)
Compatibility
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B)
Stylar inhibition
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C)
Self incompatibility
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D)
Herkogamy
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Which of the following structures play an important role in anchoring the plant body in the soil besides absorbing water & mineral solution from it :-
A)
Companion cells
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B)
Root hairs
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C)
Passage cells
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D)
Tracheidial cells
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First of all plant hormones was extracted from.
A)
Rhizopus
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B)
Canary grass
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C)
Blood
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D)
Urine
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Eutrophication is the natural aging of a lake by biological enrichment of its water. Natural aging of a lake may span thousands of years and lake finally converted into land due to deposition of silt. Pollutants from man's activities like effluents from the industries and homes can radically accelerate the aging process, this phenomenon is called :-
A)
Accelerated eutrophication
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B)
Biomagnification
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C)
Biotype
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D)
Aggregation
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Exposure to ozone hole lead to extreme sensitivity in some persons and develop a condition such as :-
A)
Colour blindness
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B)
Haemophilia
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C)
Hypercholesterolemia
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D)
Xeroderma pigmentosum
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The labia majora of a female mammals are homologous of :-
A)
Vagina
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B)
Clitoris
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C)
Penis
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D)
Scrotal sac
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The percentage of pulmonary respiration in frog is :-
A)
36 %
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B)
9 %
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C)
55 %
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D)
40 %
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During the first trimester (3 months) of pregnancy, the basic structure of the baby is formed. This involves cell division, cell migration and the differenciation of cells into the many types found in the baby. During this period, the developing baby called :-
A)
Embryo
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B)
Foetus
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C)
Newbom
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D)
Blastula
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Which of the following GMF is rich in vitamin A and Fe :-
A)
Golden rice
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B)
Flavr-Savr tomato
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C)
Potato
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D)
Bt cotton
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The fang of snake are modification of :-
A)
Upper jaw
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B)
Lower jaw
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C)
Vomerine tooth
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D)
Maxillary tooth
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Which statement is incorrect :~
A)
The root hairs are unicellular
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B)
Both apical meristems & intercalary meristem are primary meristem
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C)
In dorsiventral leaves, mesophyll is differentiated into palisade & spongy tissue
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D)
In isobilateral leaves, mesophyll is differentiated into spongy and palisade tissue
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What is link molecule between Glycolysis and Kreb cycle :-
A)
Citric acid
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B)
a-ketoglutarate
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C)
Succinyl CoA
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D)
Acetyl CoA
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According to central pollution control board (CPCB) which size of particulate are responsible for causing the greatest harm to human health :-
A)
2.5 micrometers or less than 2.5 micrometer
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B)
3.5 micrometers or less than 3.5 micrometer
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C)
4.5 micrometers or less than 4.5 micrometer
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D)
5.5 micrometers or less than 5.5 micrometer
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Which processes are involves in decomposition of detritus :-
A)
Humification
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B)
Mineralisation
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C)
Photosynthesis
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D)
Both a and b
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Valves in veins check backflow of blood flowing under :-
A)
Low pressure
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B)
High pressure
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C)
No pressure
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D)
Atmosphere pressure
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Organism which display properties of both living and non living :-
A)
Viruses
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B)
Diatoms
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C)
Lichens
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D)
Bacteria
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Sigma factor is essential for :-
A)
Recognition of promoter site of transcription in prokaryotes
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B)
Recognition of promoter site of transcription in eukaryotes
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C)
Recognition of initiation codon of m-RNA
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D)
Replication
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Which is not true for lac operon :-
A)
Discovered by Jacob & Monad
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B)
Operates in catabolic pathway
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C)
Example of inducible operon
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D)
5-structural genes are present
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Which one following organ present in Mammals but absent in Birds :-
A)
Pneumatic bones
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B)
Eye eyelids
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C)
Teeth
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D)
Neck
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Ploidy level of meristem cell of monocots is :-
A)
n
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B)
2n
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C)
3n
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D)
4n
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The km-constant of an enzyme would be equal to
A)
Substrate cone. at which reaction attains \[\frac{1}{4}\]of maximum velocity
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B)
Substrate cone. at which reaction attains \[\frac{1}{2}\]of maximum velocity
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C)
Substrate cone. at which reaction attains \[\frac{1}{8}\] of maximum velocity
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D)
None
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Large holes in swiss cheese are due to production of large amount of \[C{{O}_{2}}\] by a bacterium is :-
A)
Lactobacillus lactis
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B)
Clostridium butylicum
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C)
Propionibacterium sharmanii
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D)
Mycobacterium laprae
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Deforestation generally decreases :-
A)
Rain fall
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B)
Soil erosion
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C)
Draught
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D)
Global warming
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If you do not want to develop the population hazards then what preventions may be done:-
A)
Demographic transition must come in low stationary phase
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B)
Birth rate must decrease according to death rate
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C)
Population must show bell shape curve
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D)
All the above
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In a portal system :-
A)
A vein starts from an organ and ends up in the heart m
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B)
A vein enters into an organ other than the heart and breaks up into capillaries
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C)
An artery breaks up in an organ and restarts by union of its capillaries
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D)
An artery starts from an organ and ends up in the heart
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Organs that have different embryonic origin but perform similar functions are :-
A)
Homologous organs
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B)
Analogous organs
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C)
Vestigial organs
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D)
Atavistic organs
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In eukaryote RNA polymerase-I does not catalyze the formation of :-
A)
28 s rRNA
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B)
5.8 s rRNA
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C)
18s rRNA
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D)
5s rRNA
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The A/a and B/b genes are autosomal and 15 map unit apart. A pure individual showing A and b phenotype is crossed with pure individual with a and B phenotype. The offspring make gametes. What percentage of the gamete will have the genotype AB?
A)
50%
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B)
25%
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C)
15%
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D)
7.5%
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Which of the following is a matching pair of animal and its one of the characteristics :-
A)
Scoliodon - Ovo-viviparous
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B)
Rhacophorus - Wings
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C)
Naja - Haemotoxic
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D)
Ascidia - Retrogressive metamorphosis
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The enzyme phosphoenol pyruvate carboxylase catalyses the combination of carbondioxide and phosphoenol pyruvate to form OAA in :-
A)
Pisum
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B)
Pinus
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C)
Apple
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D)
Sorghum
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Which hormone exhibits avena curvature test.
A)
Auxin
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B)
Gibberellin
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C)
Ethylene
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D)
Cytokinin
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Which exotic or alien species is responsible for loss of biodiversity :-
A)
Lantana
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B)
Parthenium
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C)
African catfish (Clarias gariepinus)
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D)
All the above
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Extensive planting of trees to increase forest cover is called :-
A)
Afforestation
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B)
Agro-forestry
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C)
Deforestation
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D)
Social forestry
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