An isolated particle of mass m is moving in horizontal plane (X-Y), along the X-axis, at a certain height above ground. It suddenly explodes into two fragments of masses m/4 and 3m/4). An instant later, the smaller fragment is at \[Y=+15\,cm.\]. The larger fragment at this instant is at:
A)
\[Y=-5cm\]
done
clear
B)
\[Y=+20cm\]
done
clear
C)
\[Y=+5cm\]
done
clear
D)
\[Y=-20cm\]
done
clear
View Answer play_arrow
A 3kg ball strikes a heavy rigid wall with a speed of \[10m/s\] at an angle of \[{{60}^{o}}\] with the wall. It gets reflected with the same speed at \[{{60}^{o}}\] with ball. If the ball is in contact with the wall or \[0.2s,\] the average force exerted on the ball by the wall is:
A)
300N
done
clear
B)
zero
done
clear
C)
\[150\sqrt{3N}\]
done
clear
D)
150 N
done
clear
View Answer play_arrow
Two simple harmonic motions are represted by the equations \[{{Y}_{1}}=a\sin (nt+\pi /3)\] and \[{{Y}_{2}}=a\cos \pi t.\]The phase difference of velocity of particle 1 with respect to velocity of particle 2 is:
A)
\[-\frac{\pi }{3}\]
done
clear
B)
\[\frac{\pi }{6}\]
done
clear
C)
\[-\frac{\pi }{6}\]
done
clear
D)
\[\frac{\pi }{3}\]
done
clear
View Answer play_arrow
A metal wire of length L and radius r is clamped at one end to a rigid fixed support. A force F is applied at another and so that its length increase by L. The increases in length of another metal wire of length 2L and radius 2r, when stretched by a force 2F, will be:
A)
\[2L\]
done
clear
B)
\[L\]
done
clear
C)
\[L/2\]
done
clear
D)
\[L/4\]
done
clear
View Answer play_arrow
Two water of pipes of diameters \[2cm\] and \[4cm\] are connected with the main supply line. The velocity of flow of water in the pipe of \[2cm\] diameter is:
A)
4 times that in the other pipe
done
clear
B)
\[{\scriptstyle{}^{1}/{}_{4}}\] times that in the other pipes
done
clear
C)
2 times that in the other pipe
done
clear
D)
\[{\scriptstyle{}^{1}/{}_{2}}\] times that in the other pipes
done
clear
View Answer play_arrow
The height of the point vertically above the earth's surface at which the acceleration due to gravity becomes 1% of its value at the surface (R is the radius of the earth)
A)
\[8\,R\]
done
clear
B)
\[9\,R\]
done
clear
C)
\[10\,R\]
done
clear
D)
\[20\,R\]
done
clear
View Answer play_arrow
An insect crawls up a hemispherical surface very slowly. The coefficient of friction between the insect and the surface is 1/3. If the line joining the centre of the hemispherical surface to the insect, makes an angle a with the verticle, the maximum value of a is given by:
A)
\[\cot \alpha =3\]
done
clear
B)
\[\sec \alpha =3\]
done
clear
C)
\[cosec\alpha =3\]
done
clear
D)
None of these
done
clear
View Answer play_arrow
A particle is projected from a point A with a velocity V at an angle \[\theta \] (upward) with the horizontal. At a certain point B, it moves at right angle to its initial direction. It follows that:
A)
velocity of the particle at B is V
done
clear
B)
velocity of the particle at B is V \[\cos \theta \]
done
clear
C)
velocity of the particle at B is \[V\tan \theta \]
done
clear
D)
the time of flight from A to B is \[\frac{V}{g\sin \theta }\]
done
clear
View Answer play_arrow
If there is a positive error of 50% in the measurement of velocity of a body, then the error in the measurement of kinetic energy is:
A)
\[15%\]
done
clear
B)
50%
done
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C)
\[100%\]
done
clear
D)
125%
done
clear
View Answer play_arrow
What are the dimensions of electrical permittivity:
A)
\[[M{{L}^{-2}}{{T}^{-2}}{{Q}^{-2}}]\]
done
clear
B)
\[[{{M}^{-1}}{{L}^{-2}}{{T}^{-3}}{{Q}^{-1}}]\]
done
clear
C)
\[[{{M}^{-1}}{{L}^{-3}}{{T}^{2}}{{Q}^{2}}]\]
done
clear
D)
\[[{{M}^{-1}}{{L}^{-3}}{{T}^{-2}}{{Q}^{-2}}]\]
done
clear
View Answer play_arrow
The electric potential at a point (x, y) is given by \[V=Kxy\]. The electric field intensity at a distance r from the origin varies as:
A)
\[{{r}^{2}}\]
done
clear
B)
\[r\]
done
clear
C)
2r
done
clear
D)
\[2{{r}^{2}}\]
done
clear
View Answer play_arrow
Two small spheres each having the charge \[+Q\] are suspended by insulting threads of length L from a hook. This arrangement is taken is space where there is no gravitational effect, then the angle between the two threads and the tension in each will be:
A)
\[{{180}^{o}}\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{{{Q}^{2}}}{{{(2L)}^{2}}}\]
done
clear
B)
\[{{90}^{o}},\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{{{Q}^{2}}}{{{L}^{2}}}\]
done
clear
C)
\[{{180}^{o}},\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{{{Q}^{2}}}{2{{L}^{2}}}\]
done
clear
D)
\[{{180}^{o}},\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{{{Q}^{2}}}{{{L}^{2}}}\]
done
clear
View Answer play_arrow
A cricket ball is hit for a six leaving the bat at an angle of \[{{45}^{o}}\] to the horizontal with kinetic energy K. At the top position, the kinetic energy of the ball is:
A)
zero
done
clear
B)
K
done
clear
C)
\[K/2\]
done
clear
D)
\[K/\sqrt{2}\]
done
clear
View Answer play_arrow
Two blocks of masses 5kg and 2kg are connected by a massles a string as shown in the figure. A verticle force F is applied on the 5kg block. Find tghe value of F, its tension in the string is \[40N\] \[(g=10m/{{s}^{2}})\].
A)
\[140\,N\]
done
clear
B)
\[70\,N\]
done
clear
C)
\[40\,N\]
done
clear
D)
\[100\,N\]
done
clear
View Answer play_arrow
What is the average velocity during the interval \[t=2s\] tot \[=5s\], In the following position-time curve?
A)
\[2m/s\]
done
clear
B)
\[2/3m/s\]
done
clear
C)
\[1.2m/s\]
done
clear
D)
\[0.4m/s\]
done
clear
View Answer play_arrow
A small block of mass \[0.1\text{ }kg\] is pressed against a horizontal spring fixed at one end to compress the spring through \[5.0cm\]as shown. The spring constant is \[100N/m.\]. When released the WE block moves horizonally till it leaves the spring. It will hit the ground 2m below the spring.
A)
at a horizontal distance of \[1m\] from free end of the spring
done
clear
B)
at a horizontal distance of \[2m\] from free and of the springs
done
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C)
vertically below the edge on which the mass is resting
done
clear
D)
at a horizontal distance of \[\sqrt{2}m\] from free end of the spring
done
clear
View Answer play_arrow
The root mean square velocity of the gas molecules is \[300m/s\]. What will be root mean square speed of the molecules if the atomic weight is double and absolute temperature havled?
A)
\[300m/s\]
done
clear
B)
\[150m/s\]
done
clear
C)
\[600m/s\]
done
clear
D)
\[75m/s\]
done
clear
View Answer play_arrow
If Y be the ratio of specific heats of a perfect gas, the number of degree of freedom of a molecule of the gas is:
A)
\[(Y-1)\]
done
clear
B)
\[\frac{3Y-1}{2Y-1}\]
done
clear
C)
\[\frac{2}{Y-1}\]
done
clear
D)
\[\frac{9}{2}\,(Y-1)\]
done
clear
View Answer play_arrow
The driver of a car travelling with speed \[30m/s\]towards a hill, sounds a horns of frequency \[600Hz\]. If the velocity of sound in air is \[330Ws,\]the frequency of reflected sound as heard by the driver is:
A)
\[720\,Hz\]
done
clear
B)
\[555.5Hz\]
done
clear
C)
\[550Hz\]
done
clear
D)
\[500Hz\]
done
clear
View Answer play_arrow
A thin circular ring of mass m and radius R is rotating about its axis with a constant angular \[\omega \]. Two objects each of mas m are attached gently to the opposite ends of a diameter of the ring. The ring now rotates with an angular velocity \[\omega =\]
A)
\[\frac{\omega m}{(m+2m)}\]
done
clear
B)
\[\frac{\omega (m+2m)}{m}\]
done
clear
C)
\[\frac{\omega (m-2m)}{(m+2m)}\]
done
clear
D)
\[\frac{\omega m}{(m+m)}\]
done
clear
View Answer play_arrow
A particle of charge per unit mass, a is released from the origin width a velocity \[V={{V}_{0}},\] in a uniform magnetic field \[B=-{{B}_{0}}K\]. If the particle posses through \[(0,y,0)\], then Y is equal to:
A)
\[\frac{2{{V}_{0}}}{{{B}_{0}}a}\]
done
clear
B)
\[\frac{{{V}_{0}}}{{{B}_{0}}a}\]
done
clear
C)
\[\frac{2{{V}_{0}}}{{{B}_{0}}a}\]
done
clear
D)
\[\frac{{{V}_{0}}}{{{B}_{0}}a}\]
done
clear
View Answer play_arrow
A circular current carrying loop radius R, carries a current \[i,\] the magnetic field at a point on the axis of coil is \[\frac{1}{\sqrt{8}}\] times the value of magnetic field of the centre. Distance of point from centre is:
A)
\[\frac{R}{\sqrt{2}}\]
done
clear
B)
\[\frac{R}{\sqrt{3}}\]
done
clear
C)
\[R\sqrt{2}\]
done
clear
D)
\[R\]
done
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View Answer play_arrow
If a copper wire is stretched to make it \[0.1%\]longer. The percentage change in its resistance is:
A)
\[0.2%\]increases
done
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B)
\[0.2%\]decrease
done
clear
C)
\[0.1%\]increase
done
clear
D)
\[0.1%\] decrease
done
clear
View Answer play_arrow
Find the equivalent resistance across AB
A)
\[1\,\Omega \]
done
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B)
\[2\,\Omega \]
done
clear
C)
\[3\,\Omega \]
done
clear
D)
\[4\,\Omega \]
done
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View Answer play_arrow
A, B and C are resistors of resistances R, \[1.5R\]and 3R respectively. When some potential difference is applied between X and Y, the voltmeter reading are \[{{V}_{A}},{{V}_{B}}\] and \[{{V}_{C}}\] respectively:
A)
\[{{V}_{A}}={{V}_{B}}={{V}_{C}}\]
done
clear
B)
\[{{V}_{A}}\ne {{V}_{B}}={{V}_{C}}\]
done
clear
C)
\[{{V}_{A}}={{V}_{B}}\ne {{V}_{C}}\]
done
clear
D)
\[{{V}_{B}}\ne {{V}_{A}}={{V}_{C}}\]
done
clear
View Answer play_arrow
AB is wire of uniform resistance. The galvanometer G shows zero current when the length \[AC=20cm\]and \[CB=80cm\], The resistance R is equal to:
A)
\[2\,\Omega \]
done
clear
B)
\[8\Omega \]
done
clear
C)
\[20\Omega \]
done
clear
D)
\[40\Omega \]
done
clear
View Answer play_arrow
The total current supplied to the circuit by the battery is:
A)
1A
done
clear
B)
2A
done
clear
C)
4A
done
clear
D)
6A
done
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View Answer play_arrow
Four condensers each of capacity \[4\mu \] fare connected as shown in figure, with \[{{V}_{P}}-{{V}_{Q}}=15V.\] The energy stored in the system is:
A)
\[2400erg\]
done
clear
B)
\[1800erg\]
done
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C)
\[3600erg\]
done
clear
D)
\[5400erg\]
done
clear
View Answer play_arrow
In the given circuit, find the heat generated if switch is closed:
A)
\[\frac{3}{2}C{{V}^{2}}\]
done
clear
B)
\[\frac{1}{2}C{{V}^{2}}\]
done
clear
C)
\[C{{V}^{2}}\]
done
clear
D)
\[\frac{1}{3}C{{V}^{2}}\]
done
clear
View Answer play_arrow
The inward and outward electric flux for a closed surface in units of \[N{{m}^{2}}/c\] arc respectively \[8\times {{10}^{3}}N-{{m}^{2}}/C\] and \[4\times {{10}^{-3}}N-{{m}^{2}}/C\]. Then, the total charge inside the surface is:
A)
\[4\times {{10}^{3}}C\]
done
clear
B)
\[-4\times {{10}^{3}}C\]
done
clear
C)
\[\frac{-4\times {{10}^{3}}}{{{\varepsilon }_{0}}}C\]
done
clear
D)
\[-(4\times {{10}^{3}}){{\varepsilon }_{0}}C\]
done
clear
View Answer play_arrow
The radius of hydrogen atom in its ground state is \[5.3\times {{10}^{-11}}m.\]. After collision with an electron is found to have a radius of \[21.2\times {{10}^{-11}}m\]. What is the principal quantum number n of the final state of atom?
A)
\[n=4\]
done
clear
B)
\[n=2\]
done
clear
C)
\[n=16\]
done
clear
D)
\[n=3\]
done
clear
View Answer play_arrow
In a p - n junction diode, the direction of diffusion current is from:
A)
p - region to n - region
done
clear
B)
n - region to p - region
done
clear
C)
n - region to p - region when biased and vice versa when reverse biased
done
clear
D)
p - region when forward biased and vice-versa when reverse biased
done
clear
View Answer play_arrow
The wavelength of the \[{{K}_{a}}\] line for the uranium atom \[(z=92)\] is \[(R=10{{m}^{-1}})\]
A)
\[1.6\overset{o}{\mathop{A}}\,\]
done
clear
B)
\[0.16\overset{o}{\mathop{A}}\,\]
done
clear
C)
\[0.5\overset{o}{\mathop{A}}\,\]
done
clear
D)
\[2.0\overset{o}{\mathop{A}}\,\]
done
clear
View Answer play_arrow
The input resistance of a \[C\varepsilon \] amplifier is \[333\Omega \] and the load resistance is \[5K\Omega \]. A change of base current by \[15\mu A\] results in the change of collector current by 1mA. The voltage gain of amplifier is:
A)
550
done
clear
B)
101
done
clear
C)
1001
done
clear
D)
501
done
clear
View Answer play_arrow
A freshly prepared radioactive source of half-life 2h emits radiation of intensity which is 64 times the permissible safe level. The minimum time after which it would be possible to work safely with source is:
A)
\[6h\]
done
clear
B)
\[12h\]
done
clear
C)
\[24h\]
done
clear
D)
\[128h\]
done
clear
View Answer play_arrow
The maximum kinetic energy of photon electrons emitted from a surface when photons of energy \[6eV\] fall on it is\[4eV\]. The stopping potential is:
A)
2
done
clear
B)
4
done
clear
C)
6
done
clear
D)
10
done
clear
View Answer play_arrow
To which logic gate, does the truth table given below correspond?
A B X 0 0 0 0 1 1 1 0 1 1 1 1
A)
AND
done
clear
B)
OR
done
clear
C)
NAND
done
clear
D)
XOR
done
clear
View Answer play_arrow
The magnifying power of an astronomical teleshope in normal adjustment is 8 and the distance between the two lenses is 54 cm. The focal length of eye lens and objective lens will be respectively:
A)
6 cm and 48 crn
done
clear
B)
48 cm and 6 cm
done
clear
C)
8 cm and 64 cm
done
clear
D)
64 cm and 8 cm
done
clear
View Answer play_arrow
An object is placed in front of a convex mirror at a dstance of 50cm. A plane mirror is introduced covering the lower half of the convex mirror. If the distance between the object and the plane mirror is 30cm, there is no parallel between the images formed by the two mirrors. The radius of curvature the convex mirror (in cm) is:
A)
60
done
clear
B)
50
done
clear
C)
30
done
clear
D)
25
done
clear
View Answer play_arrow
In Young's double slit experiment when sodium light of wavelength \[5893\overset{o}{\mathop{A}}\,\] is used, then 62 frings are seen in the field of view. Instead of sodium light if violet light of wavelength \[4358\overset{o}{\mathop{A}}\,\] is used then the number of frings that will be seen in the field of view will be:
A)
54
done
clear
B)
64
done
clear
C)
74
done
clear
D)
84
done
clear
View Answer play_arrow
Light wave enters from medium 1 to medium 2. Its velocity in 2nd medium is double from 1st. For total interval reflection, the angle of incidence must be greater than:
A)
\[{{30}^{o}}\]
done
clear
B)
\[{{60}^{o}}\]
done
clear
C)
\[{{45}^{o}}\]
done
clear
D)
\[{{90}^{o}}\]
done
clear
View Answer play_arrow
In an AC circuit, the potential differences across an inductance and a resistance connected in series are respectively 16V and 20V. The total potential difference across the circuit is:
A)
\[20.0\,V\]
done
clear
B)
\[25.6\,V\]
done
clear
C)
\[31.9\,V\]
done
clear
D)
\[53.5\,V\]
done
clear
View Answer play_arrow
The torque acting on the loop (given), will be:
A)
zero
done
clear
B)
\[\frac{1{{a}^{2}}{{B}_{0}}}{2}\]
done
clear
C)
\[\frac{2l{{a}^{2}}{{B}_{0}}}{3}\]
done
clear
D)
None of these
done
clear
View Answer play_arrow
A rod length \[l\] is moved with a velocity V in a magnetic field B as shown in figure, the equivalent electrical circuits:
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
A current of i ampere flows in a circular arc of wire, whose radius is R, which subtend an angle \[3\pi /2\] radian at its centre. The magnetic induction B at the centre is:
A)
\[\frac{{{\mu }_{0}}i}{R}\]
done
clear
B)
\[\frac{{{\mu }_{0}}i}{2R}\]
done
clear
C)
\[\frac{2{{\mu }_{0}}i}{R}\]
done
clear
D)
\[\frac{3{{\mu }_{0}}i}{8R}\]
done
clear
View Answer play_arrow
Which one of the following species is not a pseudo halide?
A)
\[CN{{O}^{-}}\]
done
clear
B)
\[RCO{{O}^{-}}\]
done
clear
C)
\[OC{{N}^{-}}\]
done
clear
D)
\[NN{{N}^{-}}\]
done
clear
View Answer play_arrow
Ammonium dichromate is used in some fire works. The green coloured powder blown in the air is:
A)
\[Cr{{O}_{3}}\]
done
clear
B)
\[C{{r}_{2}}{{O}_{3}}\]
done
clear
C)
\[Cr\]
done
clear
D)
\[CrO({{O}_{2}})\]
done
clear
View Answer play_arrow
Which of the following compounds is expected to be coloured
A)
\[A{{g}_{2}}S{{O}_{4}}\]
done
clear
B)
\[CuCl\]
done
clear
C)
\[Cu{{F}_{2}}\]
done
clear
D)
\[Mg{{F}_{2}}\]
done
clear
View Answer play_arrow
Which of the following is an organometallic compound:
A)
Lithium mcthoxide
done
clear
B)
Lithium acetate
done
clear
C)
Lithium dimethylamide
done
clear
D)
Methyl lithium
done
clear
View Answer play_arrow
In the reaction p-chlorotolune with \[KN{{H}_{2}}\] In liq \[N{{H}_{3}},\] the major product is
A)
o-toluidine
done
clear
B)
m-toluidine
done
clear
C)
p-toluidine
done
clear
D)
p-chloroaniline
done
clear
View Answer play_arrow
Which of the following statement(s) is/are correct?
A)
The electronic configuration of \[Cr\] is \[[Ar]3{{d}^{5}}4{{s}^{1}}\].
done
clear
B)
The magnetic quantum number may have a negative value.
done
clear
C)
In silver atom 23 electrons have a spin of one type and 24 of the opposite type.
done
clear
D)
All of these
done
clear
View Answer play_arrow
Which of the following will react with water
A)
\[CHC{{l}_{3}}\]
done
clear
B)
\[C{{l}_{3}}C.CHO\]
done
clear
C)
\[CC{{l}_{4}}\]
done
clear
D)
\[ClC{{H}_{2}}C{{H}_{2}}Cl\]
done
clear
View Answer play_arrow
The pH of \[0.1\text{ }M\] solution of the following salts increases in the order
A)
\[NaCl<N{{H}_{4}}Cl<NaCN<HCl\]
done
clear
B)
\[HCl<N{{H}_{4}}Cl<NaCl<NaCN\]
done
clear
C)
\[NaCN<N{{H}_{4}}Cl<NaCl<HCl\]
done
clear
D)
\[HCl<NaCl<NaCN<N{{H}_{4}}Cl\]
done
clear
View Answer play_arrow
Which of the following is an example of chlorodising roasting?
A)
\[A{{g}_{2}}S+2NaCl\xrightarrow{{}}2AgCl+N{{a}_{2}}S\]
done
clear
B)
\[PbS+2{{O}_{2}}\xrightarrow{{}}PbS{{O}_{4}}\]
done
clear
C)
\[2AgCl+4Hg\xrightarrow{{}}2AgHg+H{{g}_{2}}C{{l}_{2}}\]
done
clear
D)
Both (a) and (c)
done
clear
View Answer play_arrow
The molecule of \[B{{F}_{3}}\] and \[N{{F}_{3}}\] both are covalent compounds but \[B{{F}_{3}}\] is non-polar and \[N{{F}_{3}}\] is polar. The reason is that
A)
boron is a metal and nitrogen is a gas in uncombined state
done
clear
B)
\[B{{F}_{3}}\] bonds have no dipole moment whereas \[N{{F}_{3}}\] bond have dipole moment.
done
clear
C)
Atomic size of boron is smaller than that of nitrogen
done
clear
D)
\[B{{F}_{3}}\] is symmetrical molecule whereas \[N{{F}_{3}}\] is unsymmetrical
done
clear
View Answer play_arrow
\[X\xleftarrow[{{H}_{2}}S{{O}_{4}}.{{H}_{2}}O]{HgS{{O}_{4}}}1-pentyne\xrightarrow[O{{H}^{-}},{{H}_{2}}{{O}_{2}}]{B{{H}_{3}}.THF}Y\] X and Y cannot be distinguished by
A)
Silver mirror test
done
clear
B)
iodoform test
done
clear
C)
\[N{{H}_{2}}OH\]
done
clear
D)
\[LiAl{{H}_{4}}\]
done
clear
View Answer play_arrow
Predominant product is
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
\[AgCl\] is colourless whereas \[AgI\] is yellow because of
A)
\[A{{g}^{+}}\]possess 18 electrons shell to screen the nuclear charge
done
clear
B)
\[A{{g}^{+}}\] shows pseudo inert gas configuration
done
clear
C)
distortion of \[{{I}^{-}}\] is more pronounced than \[C{{l}^{-}}\] ion
done
clear
D)
existence of d-d transition
done
clear
View Answer play_arrow
The osmotic pressure of blood is \[7.65\]atm at \[{{37}^{o}}C\]. How much glucose should be used per litre for an intravenous injection that is to have the same osmotic pressure as blood?
A)
\[180\text{ }g\]
done
clear
B)
\[54.2\text{ }g\]
done
clear
C)
\[86\text{ }g\]
done
clear
D)
\[\text{111 }g\]
done
clear
View Answer play_arrow
The compound ?X? was boiled under reflux for some time with a solution of sodium hydroxide. The solution was cooled, acidified with dilute nitric acid and then silver nitrate solution was added, a thick precipitate was formed which one is incorrect as ?X??
A)
\[C{{H}_{3}}Cl\]
done
clear
B)
\[{{C}_{6}}{{H}_{6}}C{{H}_{2}}Cl\]
done
clear
C)
\[C{{H}_{2}}ClCOOH\]
done
clear
D)
\[{{C}_{6}}{{H}_{5}}Cl\]
done
clear
View Answer play_arrow
In the reaction sequence \[X\xrightarrow{Ca{{(OH)}_{2}}}Y\xrightarrow{dry\,distillation}Acetone\xrightarrow[{{H}_{2}}S{{O}_{4}}]{conc.}Z\] X, Y and Z are
A)
\[C{{H}_{3}},CHO,\] aldol, phorone
done
clear
B)
\[HCOOH,\,{{(HCOO)}_{2}}Ca,\] mesityl oxide
done
clear
C)
\[C{{H}_{3}}COOH,{{(C{{H}_{3}}COO)}_{2}}Ca,\] mesityl oxide
done
clear
D)
\[C{{H}_{3}}COOH,{{(C{{H}_{3}}COO)}_{2}}Ca,\] pinacol
done
clear
View Answer play_arrow
The process of zone refining is based upon
A)
fractional crystallization
done
clear
B)
fractional distillation
done
clear
C)
magnetic properties of imparities
done
clear
D)
impurities are less fusible than metals
done
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View Answer play_arrow
Which of the following is incorrect about thermosetting polymers?
A)
They soften on heating and harden on cooling irreversibly.
done
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B)
By heating polymer can be reshaped and reused.
done
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C)
They possess three dimensional network structure containing cross links.
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D)
They are strong, hard and more brittle.
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View Answer play_arrow
The IIJPAC name of the following compound is \[C{{H}_{3}}-C{{H}_{2}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{N}}\,}}\,-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-H\]
A)
N-formyl-N-methyl ethanamine
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B)
N-ethyl-N-ixiethyl methanamide
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C)
N-methyl-N-oxo ethanamine
done
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D)
none of these
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View Answer play_arrow
\[A\xrightarrow{Ca{{(OH)}_{2}}}Y\xrightarrow{dry\,\,distillation}Acetone\xrightarrow[{{H}_{2}}S{{O}_{4}}]{conc.}Z\]\[A+B\xrightarrow{\Delta }Polymer\] Polymer is
A)
Polyacrylonitrile
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B)
nylon-6
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C)
nylon-66
done
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D)
buna-N
done
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View Answer play_arrow
If \[{{r}_{1}}\] is the radius of the first orbit of hydrogen atom, then the radii of second, third and fourth orbitals in terms of \[{{r}_{1}}\] are
A)
\[r_{1}^{2},r_{1}^{3},r_{1}^{4}\]
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B)
\[8{{r}_{1}},27{{r}_{1}},64{{r}_{1}}\]
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C)
\[4{{r}_{1}},9{{r}_{1}},16{{r}_{1}}\]
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D)
\[2{{r}_{1}},6r,8{{r}_{1}}\]
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View Answer play_arrow
Adsorption occurs not due to
A)
unbalanced force at surface molecules
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B)
unutilized free valencies at surface
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C)
vander wall's attraction at surface
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D)
increased entropy at surface
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View Answer play_arrow
A mixture of formic acid and oxalic acid is heated with concentrated \[{{H}_{2}}S{{O}_{4}},\] The gaseous product is passed into \[KOH\] solution where the volume decreases by \[\frac{1}{6}\] th. The molecular proportion of the organic acids, formic acid and oxalic acid in the mixture is
A)
\[4:1\]
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B)
\[1:4\]
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C)
\[1:2\]
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D)
\[2:1\]
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View Answer play_arrow
Based on lattice energy and other considerations which one of the following alkali metal chlorides is expected to have the highest melting point?
A)
\[RbCl\]
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B)
\[KCl\]
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C)
\[NaCl\]
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D)
\[LiCl\]
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View Answer play_arrow
Given the data at \[{{25}^{o}}C\] \[Ag+{{I}^{-}}\xrightarrow{{}}AgI+{{e}^{-}};\] \[{{E}^{o}}=0.152\,V\] \[Ag\xrightarrow{{}}A{{g}^{+}}+{{e}^{-}};\] \[{{E}^{o}}=-0.800V\] What is the vlaue of log \[{{K}_{SP}}\] for \[AgI\]? \[\left( 2.303\frac{RT}{F}=0.059\,V \right)\]
A)
\[-8.12\]
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B)
\[+8.612\]
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C)
\[-37.83\]
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D)
\[-16.13\]
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View Answer play_arrow
The electrophile involved in the above reaction is
A)
\[\overset{\oplus }{\mathop{C}}\,HC{{l}_{2}}\]
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B)
\[:CC{{l}_{2}}\]
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C)
\[\overset{O-}{\mathop{C}}\,C{{l}_{2}}\]
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D)
\[\overset{\oplus }{\mathop{C}}\,HO\]
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View Answer play_arrow
The smog is essentially caused by the presence of
A)
\[{{O}_{2}}\] and \[{{O}_{3}}\]
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B)
Oxides of sulphur and nitrogen
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C)
\[{{O}_{2}}\] and \[{{N}_{2}}\]
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D)
\[{{O}_{3}}\] and \[{{N}_{2}}\]
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View Answer play_arrow
Acetyl bromide reacts with excess of \[C{{H}_{3}}MgI\] followed by treatment with a saturated solution of \[N{{H}_{4}}Cl\] gives
A)
acetone
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B)
acetamide
done
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C)
2-methyl-2-propanol
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D)
acetyl iodide
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View Answer play_arrow
The rms velocity of an ideal gas at \[{{27}^{o}}C\] is\[0.3\text{ }m{{s}^{-1}}\].Its rms velocity at \[{{927}^{o}}C\] (in \[{{m}^{-1}}\]) is
A)
\[3.0\]
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B)
\[2.4\]
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C)
\[0.9\]
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D)
\[0.6\]
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View Answer play_arrow
The volume of \[C{{l}_{2}}\] at S.T.P. obtained on reacting \[4.35\text{ }g\] \[~Mn{{O}_{2}}\]with cone. \[HCl\] (at. wt. of \[Mn=55\]) is
A)
\[4.48\]litre
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B)
\[2.24\]litre
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C)
\[1.12\]litre
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D)
\[0.56\]litre
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View Answer play_arrow
Which among the following will show maximum osmotic pressure?
A)
\[1\,M\,NaCl\]
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B)
\[1\,M\,MgC{{l}_{2}}\]
done
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C)
\[1\,M\,{{(N{{H}_{4}})}_{3}}P{{O}_{4}}\]
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D)
\[1\,M\,N{{a}_{2}}S{{O}_{4}}\]
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View Answer play_arrow
In which of the following process of neutralization magnitude of \[\Delta {{H}_{ueutralisation}}\] less than that of \[\Delta {{H}_{ionization}}\] of water?
A)
\[HCl+NaOH\]
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B)
\[C{{H}_{3}}COOH+NaOH\]
done
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C)
\[{{H}_{2}}S{{O}_{4}}+NaOH\]
done
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D)
\[HCl{{O}_{4}}+KOH\]
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View Answer play_arrow
\[0.01\]mole of lime \[(CaO)\] was dissolved in \[100\text{ }c{{m}^{3}}\]of water. Assuming the base is completely ionized in the solution, the pH of the solution will be
A)
\[13\]
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B)
\[13.3\]
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C)
\[12.3\]
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D)
\[12.0\]
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View Answer play_arrow
In which one of the following reactions, nitrogen is not reduced?
A)
\[N{{O}_{2}}\xrightarrow[{}]{}NO_{2}^{-}\]
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B)
\[NO_{3}^{-}\xrightarrow[{}]{}NO\]
done
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C)
\[NO_{3}^{-}\xrightarrow{{}}NO_{4}^{+}\]
done
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D)
\[NO_{4}^{+}\xrightarrow{{}}{{N}_{2}}\]
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View Answer play_arrow
The value of \[{{E}_{{{H}_{2}}O/{{H}_{2}}\,\,(1atm)\,1\,pt}}\] at 298 K would be
A)
\[-0.207\,V\]
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B)
\[+\,0.207\,V\]
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C)
\[-\,0.414\,\,V\]
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D)
\[+0.414\,V\]
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View Answer play_arrow
Which of the following is incorrect about transport number?
A)
it decreases with increase in concetration
done
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B)
it is different for \[C{{l}^{-}}\] ion in \[0.1\text{ }M\text{ }HCl\]and \[0.1\text{ }M\text{ }NaCl\] solution.
done
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C)
it may increase or decrease with increase in temperature
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D)
it is never zero
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View Answer play_arrow
If 'a' is the initial concetration of the reactant, the time taken for completion of the reaction, if it is of zero order, will be
A)
\[{}^{a}/{}_{k}\]
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B)
\[{}^{a}/{}_{2\,k}\]
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C)
\[{}^{2a}/{}_{k}\]
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D)
\[{}^{k}/{}_{a}\]
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View Answer play_arrow
Which of the following elements with atomic numbers 25,30, 48 and 80 has the highest vapour pressure at room temperature?
A)
\[Z=30\]
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B)
\[Z=25\]
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C)
\[Z=48\]
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D)
\[Z=80\]
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View Answer play_arrow
Which of the following statements is correct?
A)
Lithium carbonate is soluble in water
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B)
Carbonates of \[Na,\text{ }K,\]and \[NH_{4}^{+}\] are soluble in water
done
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C)
Carbonates of \[Ca,\text{ }Sr\] and \[Ba\] are soluble in water
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D)
Basic carbonates of \[Mg\] and \[Cu\] are soluble in water
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View Answer play_arrow
A hydride of nitrogen which is acidic is
A)
\[N{{H}_{3}}\]
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B)
\[{{N}_{2}}{{H}_{4}}\]
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C)
\[{{N}_{2}}{{H}_{2}}\]
done
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D)
\[{{N}_{3}}H\]
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View Answer play_arrow
Chloramine-T is used as
A)
antipyretic
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B)
analygesic
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C)
antiseptic
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D)
disinfectant
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View Answer play_arrow
Which has maximum boiling point?
A)
done
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B)
done
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C)
\[{{(C{{H}_{3}})}_{3}}N\]
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D)
done
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View Answer play_arrow
The major product of the following sequence 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
Chloroform, when kept open is oxidised to:
A)
\[C{{O}_{2}}\]
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B)
\[COC{{l}_{2}}\]
done
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C)
\[C{{O}_{2}},C{{l}_{2}}\]
done
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D)
none of these
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View Answer play_arrow
Setting of plaster of paris is
A)
oxidation with atmospheric oxygen
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B)
Combination with atmospheric \[C{{O}_{2}}\]
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C)
dehydration
done
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D)
hydration to yield another hydrate
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View Answer play_arrow
Which of the following term is not recognized by botanists during nomenclature?
A)
Variety
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B)
Tautonyms
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C)
Autonyms
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D)
Homonyms
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View Answer play_arrow
In which of the following animals body can be divided into two identical halves by any plane passing through the central axis?
A)
Platyhelminthes, aschelminthes
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B)
Coe]enterates and platyhelminthes
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C)
Coelenterates ctenophorans and echinoderms
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D)
Poriferans, ctenophorans and molluscs
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View Answer play_arrow
Tiger, rose, fish and roundworm taxon assigned to categories respectively are
A)
Family, genus, species and subspecies
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B)
Order, family, genus and species
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C)
Class, order, family and genus
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D)
Species, genus, class and phylum
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View Answer play_arrow
Which of the following shows lysogenic cycle?
A)
\[{{T}_{A}}\] phase
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B)
\[\lambda \] phase
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C)
Temperate
done
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D)
More the one option is correct
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View Answer play_arrow
Which of the following are common features in locust, scorpion and prawn?
A)
Book gills and Malpighian tubules
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B)
Antennae and eyes
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C)
Chitinous exoskeleton and jointed appendages
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D)
Jointed appendages and tracheal system
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View Answer play_arrow
The most distinctive feature of echinoderms is presence of water vascular system. This system mainly helps in all except
A)
Locomotion
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B)
Capture and transport of food
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C)
Respiration
done
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D)
Excretion
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View Answer play_arrow
Choose the correct match
A)
Crustose lichen - Rhizocarpon
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B)
Foliose lichen - Usher
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C)
Bread of heaven - lecanora esculenta
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D)
Stone mushroom - Dermatocarpon miniatum
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View Answer play_arrow
Generation time of bacterium is 20 minutes, if initially, there were 50 cells in the culture medium, then what will be the number of cells after 2 hours?
A)
2400
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B)
2560
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C)
3200
done
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D)
3000
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View Answer play_arrow
Which of the following phylum includes headless, brainless and heartless animals?
A)
Annelida
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B)
Mollusca
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C)
Echinodermata
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D)
Hemichordata
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View Answer play_arrow
Osteichthyes fishes can be distinguished from Chondrichthyes fishes by all the following characteristics, except
A)
4 pairs of gills covered by an operculum on each side
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B)
They can stay at a particular depth without expending energy in swimming
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C)
Skin is covered with Cycloid/ctenoid scales
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D)
Male has claspers and fertilization is internal
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View Answer play_arrow
Find the incorrect matched pair
A)
Gonorrhoea - Salmonella Schottmulleri
done
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B)
Soft rot of carrt - Erwinia Cartovora
done
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C)
Fire blight of apple - Erwinia amylovora
done
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D)
Black rot of cabbage - Streptomyces scabies
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View Answer play_arrow
Mark the odd one with respect to Halophiles
A)
Are aerobic Chemo heterotrophs
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B)
Are gram negative
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C)
Develop becteriorhodopsin in their membrane at high light intensity
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D)
Possess sap vacuoles, so they cannot get plasmolysed in high salt concentration
done
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View Answer play_arrow
Match the following column-I with Column-II
Column-I Column-II A. Pythium debaryanum I. Downy mildew in Mustard B. Peronospora II. Damping off disease in seedling of tomatos C. Puccinia glumarum III. Salmon disease of gills in fishes D. Saprolegnia IV. Yellow rust of wheat
A)
A-IV B-III C-II D-I
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B)
A-II B-I C-IV D-III
done
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C)
A-II B-IV C-I D-III
done
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D)
A-II B-I C-III D-IV
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View Answer play_arrow
Embryophytc which shows siphonogamy is
A)
Riccia
done
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B)
Selaginella
done
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C)
Pinus
done
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D)
Funaria
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View Answer play_arrow
A structure found in brown algae which is functionally similar to phloem of angiosperm is
A)
Fucosan vesicle
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B)
Holdfast
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C)
Stipe
done
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D)
Trumpet hyphae
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View Answer play_arrow
The most unique morphological feature of all mammals is presence of_____
A)
Muscular diaphragm
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B)
External ear
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C)
Milk productive giants
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D)
Seven cervical vertebrae
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View Answer play_arrow
If Neophron is transferred from \[{{30}^{o}}C\] to \[{{10}^{o}}C,\] their body temperature will change to
A)
\[{{10}^{o}}C\]
done
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B)
\[{{30}^{o}}C\]
done
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C)
\[{{15}^{o}}C\]
done
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D)
Remain unchanged
done
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View Answer play_arrow
Which of the following statement is true?
A)
All chordates are vertebrates
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B)
All vertebrates are chordates
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C)
Non-chordates have a vertebral column
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D)
Invertebrates posses tubular nerve cord
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View Answer play_arrow
Which of the following cannot be considered as parasitic adaptation with respect to platyhelminthes?
A)
Protective tegument around the body
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B)
Suckers and hooks are present for attachment
done
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C)
Highly developed reproductive system
done
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D)
Well developed digestive tract and digestive glands
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View Answer play_arrow
The animals which have a dorsal notochord extended from tail to head region, better developed gill slits but have no paired fins and no vertebral column at any stage may belongs to group
A. Hemichordata B. Urochordata C. Cephalochordata D. Cyclostomata
A)
B only
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B)
C only
done
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C)
C & D
done
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D)
All of these
done
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View Answer play_arrow
While sitting the entire weight of body falls on
A)
Calcaneum
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B)
Ilium
done
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C)
Pubis
done
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D)
Ischium
done
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View Answer play_arrow
If the hematocrit value increases the blood viscosity
A)
Increases
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B)
Remains the same
done
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C)
Decreases
done
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D)
Viscosity is independent to viscosity
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View Answer play_arrow
The ear ossicle, malleus is a modification of
A)
Quadrate bone
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B)
Ethmoidal bone
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C)
Articular bone
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D)
Hyomandibular bone
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View Answer play_arrow
Which of the following is present in medulla oblongata
A)
hunger centre
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B)
thrust centre
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C)
vomiting centre
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D)
thermoregulatory centre
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View Answer play_arrow
If the velocity of blood increases, blood pressure will
A)
Decreases
done
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B)
Increases
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C)
Remains the same
done
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D)
First increase than decrease
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View Answer play_arrow
Which of the following is secreted in response to high blood pressure and increase in GFR
A)
ANF
done
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B)
Renin
done
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C)
Angiotensin
done
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D)
Rennin
done
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View Answer play_arrow
If we say that \[{{P}_{50}}\] value of haemoglobin falls this means the affinity of haemoglobin for \[{{O}_{2}}\]
A)
Rises
done
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B)
Falls
done
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C)
Remains same
done
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D)
Dependence on \[Pc{{o}_{2}}\]
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View Answer play_arrow
Pitutry dwarf differ from cretinism in lacking
A)
Deaf mutism
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B)
Stunted growth
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C)
Better mental ability
done
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D)
None of these
done
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View Answer play_arrow
Alveolar air volume of healthy person per minute is
A)
2000 ml
done
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B)
5600 ml
done
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C)
500ml
done
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D)
8000 ml
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View Answer play_arrow
Human dentition is diphyodant. The formula is
A)
\[\frac{0021}{0021}\]
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B)
\[\frac{2123}{2123}\]
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C)
\[\frac{212}{212}\]
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D)
\[\frac{2112}{2112}\]
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View Answer play_arrow
Widely used herbicide for dicot weeds is
A)
Dalapon
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B)
NAA
done
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C)
Kinetin
done
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D)
2,4D
done
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View Answer play_arrow
Environmental heterophylly is shown by
A)
Larkspur
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B)
Cotton
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C)
Buttercup
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D)
Coriander
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View Answer play_arrow
Swelling of piece of wood when placed in water is an example of
A)
Diffusion
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B)
Imbibitions
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C)
Differentiation
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D)
Intrinsic growth
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View Answer play_arrow
LHC are made up of hundreds of pigments molecules bound to
A)
Proteins
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B)
Lipids
done
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C)
Carbohydrates
done
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D)
Both (a) and (b)
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View Answer play_arrow
Number of energy using steps in glycolysis is lane
A)
One
done
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B)
Two
done
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C)
Three
done
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D)
Four
done
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View Answer play_arrow
Denitriflcation is carried out by
A)
Rhizobium
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B)
Thiobarillus
done
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C)
Nitrococcus
done
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D)
Rhodospirillum
done
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View Answer play_arrow
Water absorption by root hair is purely by
A)
Diffusion
done
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B)
Osmosis
done
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C)
Apoplast
done
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D)
Symplast
done
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View Answer play_arrow
Diffusion is a \[_{-}{{X}_{-}}\] process and is not dependent on \[_{-}{{Y}_{-}}\]. Select X and Y respectively
A)
Rapid, Pressure
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B)
Rapid Temperature
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C)
Slow, living system
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D)
Slow, gradict of concentration
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View Answer play_arrow
Which stage of cell division is also called as Diad of cells
A)
Telophase II
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B)
Telophase I
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C)
Anaphasel
done
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D)
Anaphase II
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View Answer play_arrow
The chromosome, with the centromere situated close to its end forming one extremely short, and one very long arm is
A)
Telocentric
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B)
Submetacentric
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C)
Acrocentric
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D)
Metacentric
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View Answer play_arrow
Each centriole is made up of___,_ evenly spaced peripheral fibrils of__ protein.
A)
9, Actin
done
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B)
18, Actin and myosin
done
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C)
27, Tubulin
done
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D)
9, Tubulin
done
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View Answer play_arrow
Find out the mismatched pair
A)
Mesophyll - ground tissue of leaf
done
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B)
Trichomes - Epidermal hair on stem
done
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C)
Radial - Xylem and Phloem are at same radius
done
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D)
Subsidiary cells - specialized epidermal cells
done
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View Answer play_arrow
Find incorrect match
A)
Monoecious - Cucurbits
done
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B)
Isogametes - Cladophora
done
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C)
Dioecious - Papaya
done
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D)
Unisexual flower - Sweet Potato
done
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View Answer play_arrow
Match the following
Column I (Organism) Column II (Mode of propagation) A. Potato I. Tuber B. Agave II. Leaf bud C. Ginger III. Bulbil D. Bryophyllum IV. Rhizome
A)
A-II B-IV C-I D-III
done
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B)
A-I B-III C-IV D-II
done
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C)
A-I B-IV C-II D-III
done
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D)
A-III B-I C-II D-IV
done
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View Answer play_arrow
"Terror of Begal"
A)
was introduced in India as an ornamental plant
done
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B)
propagates by vegetative means only
done
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C)
drains oxygen from water, which leads to death of fishes
done
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D)
more than one option is correct
done
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View Answer play_arrow
Which of the following plants does not show interflowing period?
A)
Peepal
done
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B)
Mango
done
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C)
Wheat
done
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D)
China Rose
done
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View Answer play_arrow
Chromosome number in meiocyte and gamete of drosophila respectively is
A)
18 and 9
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B)
8 and 4
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C)
20 and 10
done
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D)
12 and 6
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View Answer play_arrow
Which of the following represents male gametophyte
A)
Anther
done
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B)
Stamen
done
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C)
Pollen grain
done
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D)
Microsporangium
done
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View Answer play_arrow
In which of the following cases endosperm is completely consumed by the developing embryo?
A)
Ricinus
done
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B)
Coconut
done
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C)
Beans
done
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D)
Rice
done
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View Answer play_arrow
Which of the following is not the case of incomplete dominance?
A)
Flower colour of Mirabilis jalapa
done
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B)
Flower colour in shapdragon
done
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C)
Starch grain size in pea
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D)
Blood group in humans
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Read the following statements
A. Tall stature B. Overall feminine development C. Presence of barr body D. Development of breast E. Furrowed tongue
How many of the above characters belong to individual with genotype\[44+XXY\]?
A)
Two
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B)
Three
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C)
Four
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D)
Five
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Who United the knowledge of chromosomal segregation with Mendelian principles and called if the chromosomal theory of inheritance?
A)
Morgan
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B)
Henking
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C)
Sutton
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D)
John Collins
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Which of the following present is semen is used in forensic science?
A)
Litricacid
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B)
Fibrmogen
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C)
Lactic acid
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D)
Fructose
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What is the correct sequence in the process of formation of ovum?
A)
Oocyte, Oogonia, Ovum
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B)
Oogonia, Primary Oocyte, Secondary Oocyte, Ovum
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C)
Oogonia, Secondary oocyte, primary oocyte, ovum
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D)
Secondary oocyte, primary oocyte, oogonia, ovum
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Which of the following cells synthesise and secrete testicular, hormones called androgens?
A)
Sertoli cells
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B)
Interstitial cells
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C)
Leydig cells
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D)
Both (b) and (c)
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If a female wants to postpone her mentrual cycle, she should take pills containing
A)
Estrogen
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B)
Progesterone
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C)
FSH
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D)
LH
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Which among the following undergoes meiosis-I, leading to the formation of haploid cells with 23 chromosomes?
A)
Spermatogonia
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B)
Secondary spermatocyte
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C)
Spermatid
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D)
Primary spermatocyte
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Home use kits for determining a woman's fertile period depend on the detection of a hormone in use this hormone is
A)
FSH
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B)
Progesterone
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C)
HCG
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D)
LH
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Vasa efferentia are the ductless leading from
A)
Epididymis to urethra
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B)
Testicular Lobules to rete testis
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C)
Rete testis to vas deferens
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D)
Vas deferens to epididymic
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Through which of the following duct milk is sucked out?
A)
Mammary lobes
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B)
Mammary duct
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C)
Lactiferous duct
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D)
Alveoli
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Choose the incorrect match/characteristic
A)
Hymen-Presence or absence of hymen is not a reliable indicator of virginity or sexual experience
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B)
Birth Canal - Cervical canal along with vagina
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C)
Castration - Choir boys often castrated to maintain high pitch voice
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D)
Uterus - Bicornuate in human
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Identify the odd one from the following
A)
Infundibulum
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B)
Isthmus
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C)
Ampulla
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D)
Labiamajora
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Which of the following is not the feature of DNA double helix?
A)
The backbone is constituted by sugar - phosphate and the base project outside
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B)
A purine always pairs with pyrimidine
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C)
The pitch of helix is \[3.4\text{ }nm\] and there are roughly 10 base pair in each turn
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D)
Plane of one base pair stacks over the other in double helix
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How many nucleosomes are present in an eubacterial DNA which contains 46200 bp?
A)
15708
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B)
462
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C)
Zero
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D)
231
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How many heavy, hybrid and light DNA are obtained respectively if \[^{15}N\] labeled 10 DNA molecules are allowed to replicate in \[{}^{14}N\] solution for three generations?
A)
0, 20, 60
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B)
10, 20, 50
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C)
20, 40, 60
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D)
60, 40, 20
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Identify the process marked as A, B and C
A)
A B C Replication Transcription Translation
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B)
A B C Translation Transcription Transduction
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C)
A B C Replication Translocation Transduction
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D)
A B C Replication Transformation Translocation
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Choose the incorrect matching:
A)
RNA polymerase III - tRNA, 5srRNA
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B)
Tailing of RNA- 200 - 300 adenylate residues added at 57 end
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C)
Splicing-Removal of introns
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D)
Methyl guanosine triphosphate - Added to 5' end of hn RNA
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The sequence of chromosome one of human genome was completed in ________.
A)
May 2006
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B)
April 2001
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C)
March 2005
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D)
May 2003
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Match the following Column I with Column II
Column-I (Variety) Column-II (Resistant to) A. PusaKomal (I) White rust B. PusaSawani (II) Aphids C. PusaSwarnim (III) Bacterial blight D. Pusa Gaurav (IV) Shoot and fruit borer
A)
A-III B-I C-IV D-II
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B)
A-I B-II C-III D-IV
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C)
A-II B-IV C-III D-I
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D)
A-III B-IV C-I D-II
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Which of considered as the most significant discovery of twentieth century?
A)
Cheese
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B)
Beverages
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C)
Antibiotics
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D)
STP
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Greater the BOD of waste water
A)
less is its polluting potential
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B)
more is its polluting potential
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C)
more is organic matter in it
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D)
more than one option is correct
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The majority of _____ used as bio-control agents are in the genus Nucleopolyhedrovirus.
A)
Retrovirus
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B)
Tobacco mosaic virus
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C)
Reovirus
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D)
Baculoviruses
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What does natural selection means?
A)
Better adaptability
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B)
Elimination of less adapted
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C)
Better survival
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D)
All of these
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All of the following statements are related to Hardyweinberg principle, except
A)
It gives geneticists a tool to determine when evolution is occurring
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B)
Sum total of the allelic frequencies of a gene is equal to one
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C)
Saltation causes speciation
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D)
Allelic frequencies in a large random mating population remains constant in absence of mutation and migration.
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To prove Oparin's Theory, miller created electric discharge in closed flask containing
A)
\[C{{H}_{4}},{{H}_{2}},N{{H}_{3}}\] and \[{{H}_{2}}O\] vapour at \[{{800}^{o}}C\]
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B)
\[N{{H}_{3}},C{{H}_{4}}\]and \[{{H}_{2}}\] at \[{{800}^{o}}C\]
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C)
\[N{{H}_{3}},{{H}_{2}},\] and \[C{{H}_{4}}\] at \[{{500}^{o}}C\]
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D)
\[C{{H}_{4}},N{{H}_{3}},{{H}_{2}}\] and \[{{H}_{2}}O\] vapour at \[{{500}^{o}}C\]
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Which of the following dinosaurs adapted the ability to run on two legs?
A)
Triceratops
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B)
Tyrannosaurus
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C)
Stegosaurus
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D)
Brachiosaurus
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Which of the following is richest in fossil?
A)
Basalt
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B)
Granite
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C)
Sedimentary rock
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D)
Lava
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The first mammals were like
A)
Birds
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B)
Lizards
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C)
Turtles
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D)
Shrews
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Find the odd one out with respect to evolution
A)
Seal's flipper
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B)
Bat's wing
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C)
Horse's foot
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D)
Butterfly's wings
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In which organ of the host are sickle shape sporozoites of plasmodium stored?
A)
Salivary glands
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B)
Intestime
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C)
Stomach
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D)
Human brain
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Elephantiasis is spread by
A)
Wuchereria bancrofti
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B)
Wuchereria malayi
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C)
Female culex
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D)
Both (a) and (b)
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Mark the incorrect match with its test
A)
Dengue - Tourniquet test
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B)
Typhoid - Widal test
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C)
Scarlet fever - Gravidex test
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D)
HIV/AIDS - Western blot test
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Mark the odd one out with respect to infectious disease which does not get transmitted through food and water
A)
Typhoid
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B)
Pneumonia
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C)
Amoebiasis
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D)
Ascariasis
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Both light and heavy chains of immunglobulins are attached with each other through
A)
Ionic bonds
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B)
Co-ordinate bonds
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C)
Disulphide bonds
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D)
Ester bonds
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Most cells release histamine and serotonin during allergic response. This can be countered by administration of
A)
Cortisol
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B)
Thyroxine
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C)
Calcitriol
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D)
All of these
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Which of the following is a result of autoimmunity
A)
Diptheria
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B)
Polio
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C)
Rheumatoid arthritis
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D)
Hepatitis
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Which of the following set of disease is caused by viral pathogens?
A)
Amoebiasis, filariasis, typhoid, pneumonia
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B)
Diptheria, plague, enteric fever, ascariasis
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C)
Tuberculosis, chikungzmya, polio, dysentery
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D)
Hepatitis B, dengue, polio, Chicken pox
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A person bit by a snake was administered antivenin. These antivenin are
A)
Antibiotics
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B)
Preformed antibodies
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C)
Vaccine with attenuated pathogen
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D)
Antibodies synthesized by same person bitten by snake
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Find out the correct option from below statements about ecological succession
A. Hydrarch succession takes place in wet areas and the successional series progress from hydric to the mesic condition B. Xerarch succession takes place in dry areas and the successional series progress from xeric to mesic condition C. Primary succession begins in areas where natural biotic communities have been destroyed D. The establishment of a new biotic community is generally slow in secondary succession
A)
B & C
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B)
C & D
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C)
A & B
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D)
A & C
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Find the correct match with respect to example and type of population interaction
A)
Monarchy butterfly and birds - Competition
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B)
Sea anemone and clownflsh - Predation
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C)
Fishes and copepods - Parasitism
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D)
Mycorrhiza - Amensalism
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