A bar magnet of magnetic moment \[\overrightarrow{M}\]is placed in the magnetic field B. The torque acting on the magnet is:
A)
\[\overrightarrow{M}\times \overrightarrow{B}\]
done
clear
B)
\[\overrightarrow{M}-\overrightarrow{B}\]
done
clear
C)
\[{\scriptstyle{}^{1}/{}_{2}}\overrightarrow{M}\times \overrightarrow{B}\]
done
clear
D)
\[\overrightarrow{M}+\overrightarrow{B}\]
done
clear
View Answer play_arrow
A capacitor of capacitance \[6\mu f\]is charged up to 100 volt. The energy stored in the capacitor will be:
A)
\[0.6\]Joule
done
clear
B)
\[0.06\]Joule
done
clear
C)
\[0.03\]Joule
done
clear
D)
\[0.3\]Joule
done
clear
View Answer play_arrow
The radius of orbit of a planet in two times that of the earth. The time period of planet is:
A)
\[8.2\,T\]
done
clear
B)
\[2.8\,T\]
done
clear
C)
\[5.6\,T\]
done
clear
D)
\[8.4\,T\]
done
clear
View Answer play_arrow
A body falls from a height \[h=200m\]. The ratio of distance travelled in each \[2\text{ }sec\] during \[t=0\] to \[t=6\] second of the journey is
A)
\[1:4:9\]
done
clear
B)
\[5:3:1\]
done
clear
C)
\[1:3:5\]
done
clear
D)
\[1:2:3\]
done
clear
View Answer play_arrow
To make the frequency double of a spring oscillator we have to:
A)
reduce the mass to one fourth
done
clear
B)
quadruple the mass
done
clear
C)
double the mass
done
clear
D)
half the mass
done
clear
View Answer play_arrow
A particles executing SHM has amplitude \[0.01m\]and frequency\[60\,Hz\]. The maximum acceleration of particle will be:
A)
\[64\,{{\pi }^{2}}m/{{s}^{2}}\]
done
clear
B)
\[80\,{{\pi }^{2}}m/{{s}^{2}}\]
done
clear
C)
\[124\,{{\pi }^{2}}m/{{s}^{2}}\]
done
clear
D)
\[144\,{{\pi }^{2}}m/{{s}^{2}}\]
done
clear
View Answer play_arrow
When a wave travels in a medium the particles displacement in given by the equation \[y=0.03\,\sin \pi \] \[(2t-0.01x),\] where x and y are in metre and t in sec. The wavelength of the wave will be:
A)
\[200\,m\]
done
clear
B)
\[400\,m\]
done
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C)
\[40\,m\]
done
clear
D)
\[10\,m\]
done
clear
View Answer play_arrow
If \[300\,ml\] of a gas at \[{{27}^{o}}C\] is cooled to \[{{7}^{o}}C\] at constant pressure then its final volume is:
A)
\[740\,ml\]
done
clear
B)
\[250\,ml\]
done
clear
C)
\[280\,ml\]
done
clear
D)
\[135\,ml\]
done
clear
View Answer play_arrow
Find the equivalent resistant between the point A and B:
A)
\[2\,\Omega \]
done
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B)
\[4\,\Omega \]
done
clear
C)
\[32\,\Omega \]
done
clear
D)
\[16\,\Omega \]
done
clear
View Answer play_arrow
When sound wave travel from air to water which one of the following remains constant?
A)
Time period
done
clear
B)
Frequency
done
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C)
Velocity
done
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D)
Wavelength
done
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View Answer play_arrow
The minimum wavelength of x-rays emitted by x-ray tube is\[0.4125\overset{o}{\mathop{A}}\,\]. The acceleration voltage is:
A)
30 KV
done
clear
B)
50 KV
done
clear
C)
80 KV
done
clear
D)
60 KV
done
clear
View Answer play_arrow
A monoatomie gas supplied the heat Q very slowly keeping the pressure constant. The work done by the gas will:
A)
\[\frac{2}{3}Q\]
done
clear
B)
\[\frac{3}{5}Q\]
done
clear
C)
\[\frac{2}{5}Q\]
done
clear
D)
\[\frac{1}{5}Q\]
done
clear
View Answer play_arrow
The refractive index of the material of the prism and liquid are \[1.56\] and \[1.32\] respectively. What will be the value of \[\theta \] for the following refraction:
A)
\[\sin \theta \ge \frac{13}{11}\]
done
clear
B)
\[\sin \theta \ge \frac{11}{13}\]
done
clear
C)
\[\sin \theta \ge \frac{\sqrt{3}}{2}\]
done
clear
D)
\[\sin \theta \ge \frac{1}{\sqrt{2}}\]
done
clear
View Answer play_arrow
The temperature of the black body increase from T to 2T. The factor by which the rate of emission will increase is:
A)
4
done
clear
B)
2
done
clear
C)
16
done
clear
D)
8
done
clear
View Answer play_arrow
A police jeep is chasing with velocity of 45 km/h a thief in another jeep moving with velocity 153 km/h. Police fires a bullet with muzzle velocity of 180m/s. The velocity with which it will strike the jeep of the thief is:
A)
150m/5
done
clear
B)
27m/s
done
clear
C)
450m/s
done
clear
D)
250m/s
done
clear
View Answer play_arrow
In a sinusoidal wave, the time required maximum displacement to zero displacement is\[0.17\text{ }sec\]. The frequency of the wave is:
A)
\[1.47Hz\]
done
clear
B)
\[2.94Hz\]
done
clear
C)
\[0.73Hz\]
done
clear
D)
\[9.36Hz\]
done
clear
View Answer play_arrow
An LC circuit is in the state of resonance. If \[c=.1\mu f\]and \[L=0.25\,H\]. neglecting ohmic resistance of circuit. What is the frequency of oscillation?
A)
1007Hz
done
clear
B)
100Hz
done
clear
C)
1109Hz
done
clear
D)
600Hz
done
clear
View Answer play_arrow
A person who can see thing most clearly at a distance of 10cm, required spectacles to enable to see clearly thing at a distance of 30cm. What should be the focal length of the spectacles?
A)
15cm (concave)
done
clear
B)
15cm (convex)
done
clear
C)
20cm
done
clear
D)
40cm
done
clear
View Answer play_arrow
The dimensional formula for Young's modulus is:
A)
\[[M{{L}^{-1}}{{T}^{-2}}]\]
done
clear
B)
\[[{{M}^{o}}L{{T}^{-2}}]\]
done
clear
C)
\[[ML{{T}^{-2}}]\]
done
clear
D)
\[[M{{L}^{2}}{{T}^{-2}}]\]
done
clear
View Answer play_arrow
When temperature of an ideal gas is increased from \[{{27}^{o}}C\] to\[{{227}^{o}}C\]. Its rms speed is changed from 400 metre/sec to \[{{V}_{2}}\]. Then \[{{V}_{2}}\] will be:
A)
516 metre/sec
done
clear
B)
450 metre/sec
done
clear
C)
410 metre/sec
done
clear
D)
746 metre/sec
done
clear
View Answer play_arrow
Figure shown three points A,B and C in a region of uniform electric field \[\overrightarrow{E}\]. The line AB is perpendicular and BC is parallel to the field line. Then which of the following hold goods.
A)
\[{{V}_{A}}={{V}_{B}}={{V}_{C}}\]
done
clear
B)
\[{{V}_{A}}={{V}_{B}}>{{V}_{C}}\]
done
clear
C)
\[{{V}_{A}}={{V}_{C}}={{V}_{B}}\]
done
clear
D)
\[{{V}_{A}}>{{V}_{B}}>{{V}_{C}}\]
done
clear
View Answer play_arrow
The potential difference between point A and B is:
A)
\[20/7V\]
done
clear
B)
\[40/7V\]
done
clear
C)
\[10/7V\]
done
clear
D)
zero
done
clear
View Answer play_arrow
A short linear object of length b lies along the axis of a concave mirror of focal length f at a distance u from the pole of the mirror, what is the size of image?
A)
\[\left( \frac{f}{u-f} \right)b\]
done
clear
B)
\[{{\left( \frac{f}{u-f} \right)}^{2}}b\]
done
clear
C)
\[{{\left( \frac{f}{u-f} \right)}^{2}}{{b}^{2}}\]
done
clear
D)
\[\left( \frac{f}{u-f} \right){{b}^{2}}\]
done
clear
View Answer play_arrow
A closed organ pipe and an open organ pipe are funned to the same fundamental frequency. What is the ratio of their length?
A)
\[1:2\]
done
clear
B)
\[2:1\]
done
clear
C)
\[3:4\]
done
clear
D)
\[4:3\]
done
clear
View Answer play_arrow
Regarding a semiconductor which one of the following is wrong?
A)
There are no free electron at room temperature.
done
clear
B)
There are no free electron at OK
done
clear
C)
The number of free electron increases with rise of temperature.
done
clear
D)
The charge carriers are electron and holes.
done
clear
View Answer play_arrow
A steel scale measures the length of a copper wires as \[80.0cm,\] when both are at \[{{20}^{o}}C,\] the calibration temperature for the scale. What would the scale read for the length of the wire when both are at\[{{40}^{o}}C\]? Given a for steel \[=11\times {{10}^{-6}}\] per \[^{o}C\] and a for \[Cu=17\times {{10}^{-6}}\]per \[^{o}C\]:
A)
\[90.0096\,cm\]
done
clear
B)
\[80.0272\,cm\]
done
clear
C)
\[1\,cm\]
done
clear
D)
\[25.2\,cm\]
done
clear
View Answer play_arrow
A tank is filled with water up to height H. When a hole is made at a distance h below the level of water, what will be the horizontal range of water jet?
A)
\[2\sqrt{h(H-h)}\]
done
clear
B)
\[4\sqrt{h(H+h)}\]
done
clear
C)
\[4\sqrt{h(H-h)}\]
done
clear
D)
\[2\sqrt{h(H+h)}\]
done
clear
View Answer play_arrow
A raft of wood of mass 120kg floats in water. The weight that can be put on the raft to make Pt just sink, should be (draft\[=600kg/{{m}^{3}}\]):
A)
80 kg
done
clear
B)
50 kg
done
clear
C)
60 kg
done
clear
D)
30 kg
done
clear
View Answer play_arrow
Nuclear fusion is common to the part:
A)
thermonuclear reactor, uranium based nuclear reactor
done
clear
B)
energy production in sun, uranium based nuclear reactor
done
clear
C)
energy production in sun, hydrogen bomb
done
clear
D)
disintegration of heavy nuclear hydrogen bomb
done
clear
View Answer play_arrow
Which of the following statement is true for- n-type semi-conductor?
A)
The donor level lies, closely above. The bottom of the conduction band.
done
clear
B)
The donor level lies closely above the top of the valence band
done
clear
C)
The donor level lies at the half way mark of the forbidden energy gap.
done
clear
D)
None of the above
done
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View Answer play_arrow
The length breadth and thickness of a block are given by \[l=12\,cm,\] \[b=cm\] and \[t=2.45cm\].
A)
\[1\times {{10}^{2}}c{{m}^{3}}\]
done
clear
B)
\[2\times {{10}^{2}}c{{m}^{3}}\]
done
clear
C)
\[1.764\times {{10}^{2}}c{{m}^{3}}\]
done
clear
D)
None of these
done
clear
View Answer play_arrow
Five particles of mass 2kg are attached to the rim of a circular disc of radius \[0.1m\] and negligible mass. Moment of inertia of the system about the axis passing through the centre of the disc and perpendicular to its plane is:
A)
\[3\,kg\,{{m}^{2}}\]
done
clear
B)
\[0.1\,kg\,{{m}^{2}}\]
done
clear
C)
\[4\,kg\,{{m}^{2}}\]
done
clear
D)
\[0.2\text{ }kg\text{ }{{m}^{2}}\]
done
clear
View Answer play_arrow
The radius of the convex surface of plano-convex lens is 20cm and the refractive index of the material of the lens is \[1.5\]. The focal length is:
A)
\[30\,cm\]
done
clear
B)
\[50\,cm\]
done
clear
C)
\[20\,cm\]
done
clear
D)
\[40\,cm\]
done
clear
View Answer play_arrow
An ice-cube of density \[900kg/{{m}^{3}}\] is floating in water of density \[1000g/{{m}^{3}}\]. The percentage of volume of ice-cube out site the water is:
A)
20%
done
clear
B)
35%
done
clear
C)
10%
done
clear
D)
25%
done
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View Answer play_arrow
A sphere of diameter \[0.2m\]and mass 2kg is rolling on an inclined plane with velocity \[V=0.5m/s\]. The kinetic energy of the sphere is:
A)
\[0.1\,J\]
done
clear
B)
\[0.3\,J\]
done
clear
C)
\[0.5\,J\]
done
clear
D)
\[0.42\,J\]
done
clear
View Answer play_arrow
An electron moves at right angle to a magnetic - field of \[1.5\times {{10}^{2}}\] tesia with a speed of \[6\times {{10}^{7}}m/s\]. If the specific charge of the electron is \[1.7\times {{10}^{11}}\] coulamb/kg. The radius of the circular path will be:
A)
\[2.9\,cm\]
done
clear
B)
\[3.9\,cm\]
done
clear
C)
\[2.35\,cm\]
done
clear
D)
\[2\,cm\]
done
clear
View Answer play_arrow
If work function of a metal is \[4.2e\,V,\] the cut of wavelength is:
A)
\[8000\overset{o}{\mathop{A}}\,\]
done
clear
B)
\[7000\overset{o}{\mathop{A}}\,\]
done
clear
C)
\[1472\overset{o}{\mathop{A}}\,\]
done
clear
D)
\[2950\overset{o}{\mathop{A}}\,\]
done
clear
View Answer play_arrow
A particle executing the motion \[x=a\,\,\cos \,\,(\omega t-\theta )\]. The maximum velocity of the particle is:
A)
\[a\,\,\theta \,\,\cos \theta \]
done
clear
B)
\[a\,\omega \]
done
clear
C)
\[a\,\omega \,\sin \theta \]
done
clear
D)
none of these
done
clear
View Answer play_arrow
A particle is executing two different simple harmonic motion mutually perpendicular different amplitudes and having phase difference of \[\frac{\pi }{2}\]. The path of the particle will be:
A)
circular
done
clear
B)
straight line
done
clear
C)
parabolic
done
clear
D)
elliptical
done
clear
View Answer play_arrow
Equation of motion in the same direction are given by: \[{{y}_{1}}=2a\,\sin (\omega t-kx),\,{{y}_{2}}=2a\,\sin (\omega t-kx-\theta )\] The amplitude of the medium particle will be:
A)
\[2a\,\cos \theta \]
done
clear
B)
\[\sqrt{2}a\,\cos \theta \]
done
clear
C)
\[4a\,\cos \frac{\theta }{2}\]
done
clear
D)
\[\sqrt{2}a\,\cos \frac{\theta }{2}\]
done
clear
View Answer play_arrow
A prism of refractive index \[\sqrt{2}\] has a refracting angle of\[{{60}^{o}}\]. At what angle a ray must incident on it so that when suffers a minimum deviation?
A)
\[{{45}^{o}}\]
done
clear
B)
\[{{60}^{o}}\]
done
clear
C)
\[{{90}^{o}}\]
done
clear
D)
\[{{180}^{o}}\]
done
clear
View Answer play_arrow
A cone filled with water is revolved in a vertical circle of radius 4m and the water does not fall down. What must be the maximum period of revolution?
A)
\[2sec\]
done
clear
B)
\[4sec\]
done
clear
C)
\[1sec\]
done
clear
D)
\[6sec\]
done
clear
View Answer play_arrow
A transparent cube of \[15cm\] edge contains a small air bubble. It apparent depth when viewed through one face is \[6cm\] and when viewed through the opposite face is\[4cm\]. Then the refractive index of the material of the cube will be:
A)
\[2.0\]
done
clear
B)
\[2.5\]
done
clear
C)
\[1.6\]
done
clear
D)
\[1.5\]
done
clear
View Answer play_arrow
A coil having N turns carries a current as shown in figure. The magnetic field intensity at point P is:
A)
\[\frac{{{\mu }_{0}}Ni{{r}^{2}}}{2{{({{R}^{2}}+{{x}^{2}})}^{3/2}}}\]
done
clear
B)
\[\frac{{{\mu }_{0}}Ni}{2R}\]
done
clear
C)
\[\frac{{{\mu }_{0}}Ni{{R}^{2}}}{{{(R+x)}^{2}}}\]
done
clear
D)
zero
done
clear
View Answer play_arrow
A capacitor in connected to a cell of emf \[\varepsilon \] having some internal resistance r. The potential difference across the:
A)
Cell is \[<\varepsilon \]
done
clear
B)
Cell is \[\varepsilon \]
done
clear
C)
Capacitor is \[>\varepsilon \]
done
clear
D)
Capacitor is \[<\varepsilon \]
done
clear
View Answer play_arrow
The electrons identified by quantum numbers
I. \[n=4,\,l=1\] II. \[n=4,\,l=0\] III. \[n=3,\,l=2\] IV. \[n=2,\,l=1\]
can be placed in order of increasing energy from the lowest to highest as:
A)
IV < II < III < I
done
clear
B)
II < IV < I < III
done
clear
C)
I < III < II < IV
done
clear
D)
III < I < IV < II
done
clear
View Answer play_arrow
The first emission line in the electronic spectrum of hydrogen in the Balmer series appears at \[c{{m}^{-1}}\]
A)
\[\frac{9R}{400}c{{m}^{-1}}\]
done
clear
B)
\[\frac{7R}{144}c{{m}^{-1}}\]
done
clear
C)
\[\frac{3R}{4}c{{m}^{-1}}\]
done
clear
D)
\[\frac{5R}{36}c{{m}^{-1}}\]
done
clear
View Answer play_arrow
\[KMn{{O}_{4}}\] reacts with oxalic acid according to the equation \[2MnO_{4}^{-}+5{{C}_{2}}O_{4}^{2-}+16{{H}^{+}}\to 2M{{n}^{2+}}+10C{{O}_{2}}+8{{H}_{2}}O\]Here, \[20\text{ }ml\] of \[0.1\,M\,\,KMn{{O}_{4}}\] is equivalent to:
A)
\[20ml\] of \[0.5\,M\] \[{{H}_{2}}{{C}_{2}}{{O}_{4}}\]
done
clear
B)
\[50\,ml\] of \[1\,M\,\,{{H}_{2}}{{C}_{2}}{{O}_{4}}\]
done
clear
C)
\[50\,ml\] of \[0.01\,M\,\,{{H}_{2}}{{C}_{2}}{{O}_{4}}\]
done
clear
D)
\[20\,ml\] of \[0.1\,M\,\,{{H}_{2}}{{C}_{2}}{{O}_{4}}\]
done
clear
View Answer play_arrow
An aqueous solution of \[6.3\text{ }g\] oxalic acid dehydrate is made up to \[250\text{ }ml.\]The volume of \[0.1\text{ }N\] sodium hydroxide required to completely neutralise 10 ml of this solution is:
A)
\[40\text{ }ml\]
done
clear
B)
\[20\text{ }ml\]
done
clear
C)
\[10\,\,ml\]
done
clear
D)
\[4\,\,ml\]
done
clear
View Answer play_arrow
Which of the following salts is most soluble?
A)
\[B{{i}_{2}}{{S}_{3}}({{K}_{SP}}=1\times {{10}^{-17}})\]
done
clear
B)
\[MnS({{K}_{SP}}=7\times {{10}^{-16}})\]
done
clear
C)
\[CuS({{K}_{SP}}=8\times {{10}^{-37}})\]
done
clear
D)
\[A{{g}_{2}}S({{K}_{SP}}=6\times {{10}^{-51}})\]
done
clear
View Answer play_arrow
In the reaction \[2A+B\to {{A}_{2}}B,\] if the concentration of A is doubled and that of B is halved, then the rate of reaction will:
A)
increase by 4 times
done
clear
B)
decrease by 2 times
done
clear
C)
increase by 2 times
done
clear
D)
remains the same
done
clear
View Answer play_arrow
The Van't Hoff factor for \[0.1M\] \[Ba{{(N{{O}_{3}})}_{2}}\] solution is\[2.74\]. The degree of dissociation is:
A)
\[91.3%\]
done
clear
B)
\[87%\]
done
clear
C)
\[100%\]
done
clear
D)
\[74%\]
done
clear
View Answer play_arrow
The occurrence of the reaction is impossible if:
A)
\[\Delta H\] is \[+ve;\] \[\Delta S\] is also \[+ve\]
done
clear
B)
\[\Delta H\] is \[-ve;\] \[\Delta S\] is also \[-ve\]
done
clear
C)
\[\Delta H\] is \[-ve;\] \[\Delta S\] is \[+ve\]
done
clear
D)
\[\Delta H\] is \[+ve;\] \[\Delta S\] is \[-ve\]
done
clear
View Answer play_arrow
\[50\text{ }ml\] of hydrogen diffuses through small hole from a vessel in 20 min time. Time taken for \[40\text{ }ml\] of oxygen to diffuse out under similar conditions will be
A)
12 min
done
clear
B)
32 min
done
clear
C)
8 min
done
clear
D)
64 min
done
clear
View Answer play_arrow
In which of the following, Tyndall effect is not observed?
A)
Smoke
done
clear
B)
Emulsions
done
clear
C)
Sugar solution
done
clear
D)
Gold sol
done
clear
View Answer play_arrow
\[{{N}_{2}}\] and \[{{O}_{2}}\] are converted to \[N_{2}^{+}\] and \[O_{2}^{+}\] respectively. Which of the following is not correct?
A)
In \[N_{2}^{+},\] the \[N-N\] bond weakens
done
clear
B)
In \[O_{2}^{+},\] \[O-O\] bond order increases
done
clear
C)
In \[O_{2}^{+},\] paramagnetism decreases
done
clear
D)
\[N_{2}^{+},\] becomes diamagnetic
done
clear
View Answer play_arrow
The decreasing order of basic character of the amines and ammonia is
A)
\[N{{H}_{3}}>C{{H}_{3}}N{{H}_{2}}>{{C}_{2}}{{H}_{5}}N{{H}_{2}}>{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]
done
clear
B)
\[{{C}_{2}}{{H}_{6}}N{{H}_{2}}>C{{H}_{3}}N{{H}_{2}}>N{{H}_{3}}>{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]
done
clear
C)
\[{{C}_{6}}{{H}_{5}}N{{H}_{2}}>{{C}_{2}}{{H}_{5}}N{{H}_{2}}>C{{H}_{3}}N{{H}_{2}}>N{{H}_{3}}\]
done
clear
D)
\[C{{H}_{3}}N{{H}_{2}}>{{C}_{2}}{{H}_{5}}N{{H}_{2}}>{{C}_{6}}{{H}_{6}}N{{H}_{2}}>N{{H}_{3}}\]
done
clear
View Answer play_arrow
Which of the following is not an amino acid?
A)
Glycine
done
clear
B)
Alanine
done
clear
C)
Histidine
done
clear
D)
Benzidine
done
clear
View Answer play_arrow
The boiling point of water decreases at high altitudes because
A)
the atmospheric pressure is low
done
clear
B)
the temperature is low
done
clear
C)
the atmospheric pressure is high
done
clear
D)
the temperature is high
done
clear
View Answer play_arrow
Which of the following statement is not correct?
A)
Phenol is more acidic than acetic acid
done
clear
B)
Ethanol is less acidic than phenol
done
clear
C)
Ethanol has lower boiling point than ethane
done
clear
D)
Ethane is a non-linear molecule
done
clear
View Answer play_arrow
A solid has a structure in which W atoms are located at the corners of a cubic lattice, O atoms at the centre of edges and Na atom at centre of the cube. The formula for the compound is
A)
\[NaW{{O}_{2}}\]
done
clear
B)
\[NaW{{O}_{3}}\]
done
clear
C)
\[N{{a}_{2}}W{{O}_{3}}\]
done
clear
D)
\[NaW{{O}_{4}}\]
done
clear
View Answer play_arrow
The bond angles of \[N{{H}_{3}},NH_{4}^{+}\] and \[NH_{2}^{-}\] are in the order
A)
\[NH_{2}^{-}>N{{H}_{3}}>NH_{4}^{+}\]
done
clear
B)
\[NH_{4}^{+}>N{{H}_{3}}>NH_{2}^{-}\]
done
clear
C)
\[N{{H}_{3}}>NH_{2}^{-}>NH_{4}^{+}\]
done
clear
D)
\[N{{H}_{3}}>NH_{4}^{+}>NH_{2}^{-}\]
done
clear
View Answer play_arrow
The freezing point of a dilute solution of acetamide in glacial acetic acid is 298 K. This is the value when crystals of
A)
Acetamide first appears
done
clear
B)
Acetic acid first appears
done
clear
C)
Both appear together
done
clear
D)
Ice first appears
done
clear
View Answer play_arrow
A radiactive isotope having a half life of \[2.3\]days was received after \[9.2\]days. It was found that there were 300 mg of the isotope in the container. The initial amount of the isotope was:
A)
1200 mg
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B)
3600mg
done
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C)
4800 mg
done
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D)
2400mg
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View Answer play_arrow
In a \[0.2\]molal aqueous solution of a weaks acid HX, the degree of ionization is\[0.3\]. Taking k. for water as \[1.85,\]the freezing point of the solution will be nearest to
A)
\[-{{4.80}^{o}}C\]
done
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B)
\[-{{0.360}^{o}}C\]
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C)
\[-{{0.260}^{o}}C\]
done
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D)
\[-{{2.56}^{o}}C\]
done
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View Answer play_arrow
Which one of the following is a compound most likely to have a dipole moment?
A)
\[C{{S}_{2}}\]
done
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B)
\[CC{{l}_{2}}{{F}_{2}}\]
done
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C)
\[S{{O}_{3}}\]
done
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D)
\[SnC{{l}_{2}}\]
done
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View Answer play_arrow
\[C{{r}_{2}}O_{7}^{2-}+{{I}^{-}}\xrightarrow{{}}{{I}_{2}}+C{{r}^{3+}}\] \[E_{cell}^{o}=0.79V,\] \[E_{C{{r}_{2}}O_{7}^{2-}}^{o}=1.33V\] \[E_{{{I}_{2}}}^{o}=?\]
A)
\[0.54\,V\]
done
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B)
\[-0.54\,V\]
done
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C)
\[0.18\,V\]
done
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D)
\[-0.18\,V\]
done
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View Answer play_arrow
The time required to coat a metal surface of \[800\text{ }c{{m}^{2}}\] with \[5\times {{10}^{-3}}cm\] thick layer of silver (density\[=10.5\text{ }g\text{ }c{{m}^{-3}}\]) with the passage of 3A current through a silver nitrate solution is
A)
\[115\text{ }sec\]
done
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B)
\[125\text{ }sec\]
done
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C)
\[135\text{ }sec\]
done
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D)
\[145\text{ }sec\]
done
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View Answer play_arrow
Which of the following compound is optically active?
A)
1-butanol
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B)
Isopropyi alcohol
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C)
Acetaldehyde
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D)
2-butanol
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View Answer play_arrow
Relation between hydrolysis constant and dissociation constant are given. Which is the correct formula for \[MgC{{l}_{2}}\]?
A)
\[{{K}_{h}}=\frac{{{K}_{w}}}{{{K}_{a}}}\]
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B)
\[{{K}_{h}}=\frac{{{K}_{w}}}{{{K}_{b}}}\]
done
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C)
\[{{K}_{h}}=\frac{{{K}_{w}}}{{{K}_{a}}\times {{K}_{b}}}\]
done
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D)
\[{{K}_{w}}=\frac{{{K}_{h}}}{{{K}_{b}}}\]
done
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View Answer play_arrow
When \[{{F}_{2}}\] reacts with hot and concentrated alkali then following will be obtained:
I. \[O{{F}_{2}}\] II. \[{{O}_{2}}\] III. \[{{H}_{2}}O\] IV. NaF
A)
I, III and IV
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B)
II and III
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C)
II, III and IV
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D)
all of the above
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View Answer play_arrow
The process used in conversion of triolein to tristearin is:
A)
hydrolysis
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B)
hydration
done
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C)
hydrogenation
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D)
dehydrogenation
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View Answer play_arrow
The product obtained on fusion of \[BaS{{O}_{4}}\] and \[N{{a}_{2}}C{{O}_{3}}\] is
A)
\[BaC{{O}_{3}}\]
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B)
\[BaO\]
done
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C)
\[Ba{{(OH)}_{2}}\]
done
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D)
\[BaHS{{O}_{4}}\]
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View Answer play_arrow
Which of the following statement is wrong?
A)
Salicylic acid is a monobasic acid.
done
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B)
Methyl salicylate is an ester
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C)
Salicylic acid gives violet colour with neutral ferric chloride as well as brisk effervescence with sodium bicarbonate
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D)
Methyl salicylate does not occur in mineral oils.
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View Answer play_arrow
An organic compound 'A' having molecular formula \[{{C}_{2}}{{H}_{3}}N\] on reduction gave another compound 'B', upon treatment with nitrous acid 'B', gave ethyl alcohol. On warming with chlroform and alcoholic \[KOH,\]it formed an offensive smelling compounds 'C' The compound 'C'. is
A)
\[C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}\]
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B)
\[C{{H}_{3}}C{{H}_{2}}N\overset{\to }{\mathop{=}}\,C\]
done
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C)
\[C{{H}_{3}}C\equiv N\]
done
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D)
\[C{{H}_{3}}C{{H}_{2}}OH\]
done
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View Answer play_arrow
IUPC name of the compound Day
A)
5-methyl-4-isopropyl-6,6' diethyloctane
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B)
3,3-dimethyl, 3-ethyl-5-isopropyl octane
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C)
3,3-diethyl-4-methyl-5(l, 1-dimethyl) octane
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D)
3,3-diethyl-4-methyl-5(r-methylethyl) octane
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View Answer play_arrow
Apatite is an ore of:
A)
fluorine
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B)
chlorine
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C)
bromine
done
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D)
iodine
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View Answer play_arrow
Which of the following forms vortex ring?
A)
\[{{P}_{2}}{{O}_{5}}\]
done
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B)
\[N{{H}_{3}}\]
done
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C)
\[P{{H}_{3}}\]
done
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D)
\[{{P}_{4}}{{O}_{10}}\]
done
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View Answer play_arrow
Tincture of iodine is
A)
Solution of iodine in \[CC{{l}_{4}}\]
done
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B)
Solution of iodine in ethanol
done
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C)
\[KI{{O}_{3}}\]
done
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D)
\[CH{{I}_{3}}\]
done
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View Answer play_arrow
Chloramine-T is used as
A)
antipyretic
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B)
analgesic
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C)
antiseptic
done
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D)
disinfectant
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View Answer play_arrow
The decomposition temperature is maximum for
A)
\[MgC{{O}_{3}}\]
done
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B)
\[CaC{{O}_{3}}\]
done
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C)
\[SrC{{O}_{3}}\]
done
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D)
\[BaC{{O}_{3}}\]
done
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View Answer play_arrow
In the dichromate dianion
A)
\[4\text{ }Cr-O\]bonds are equivalent
done
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B)
\[\text{6 }Cr-O\] bonds are equivalent
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C)
all \[Cr-O\] bonds are equivalent
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D)
all \[Cr-O\] bonds are non-equivalent
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View Answer play_arrow
Among the following metal carbonyls the \[C-O\] bonds order is lowest in
A)
\[{{[Mn{{(CO)}_{6}}]}^{+}}\]
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B)
\[[Fe{{(CO)}_{5}}]\]
done
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C)
\[[Cr{{(CO)}_{6}}]\]
done
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D)
\[{{[V{{(CO)}_{6}}]}^{-}}\]
done
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View Answer play_arrow
Which kind of isomerism is shown by \[CO{{(N{{H}_{3}})}_{4}}\] \[B{{r}_{2}}Cl\]?
A)
geometrical and ionisation
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B)
optical and ionisation
done
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C)
geometrical and optical
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D)
geometrical
done
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View Answer play_arrow
A metal nitrate reacts with \[KI\]to give a black precipitate which on additon of excess o \[KI\]convert into orage colour solution. The cation of metal nitrate is
A)
\[H{{g}^{2+}}\]
done
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B)
\[B{{i}^{3+}}\]
done
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C)
\[S{{n}^{2+}}\]
done
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D)
\[P{{b}^{2+}}\]
done
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View Answer play_arrow
A gas 'X' is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of a colourless gas Y. Identify 'X' and Y.
A)
\[X=C{{O}_{2}}\text{,}Y=C{{l}_{2}}\]
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B)
\[X=C{{l}_{2}}\text{,}Y=C{{O}_{2}}\]
done
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C)
\[X=C{{l}_{2}},Y={{H}_{2}}\]
done
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D)
\[X={{H}_{2}},Y=C{{l}_{2}}\]
done
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View Answer play_arrow
Identify the correct order of boiling points of the following compounds \[\underset{I}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}OH}}\,\] \[\underset{II}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COH}}\,\] \[\underset{III}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOH}}\,\]
A)
\[I>II>III\]
done
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B)
\[III>I>II\]
done
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C)
\[I>III>II\]
done
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D)
\[III>II>I\]
done
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View Answer play_arrow
A solution of (+)-2-chloro-2-phenylethane in toluene racemises slowly in the presence of small amount of \[SbC{{l}_{2}}\] due to the formation of
A)
carbanion
done
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B)
carbene
done
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C)
free radical
done
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D)
carbocation
done
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View Answer play_arrow
Which of the following pairs give positive Tollen's test?
A)
glucose, sucrose
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B)
glucose, fructose
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C)
fructose, sucrose
done
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D)
hexanal, acetophenone
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View Answer play_arrow
Which of the following is not oxidised by\[{{O}_{3}}\]?
A)
\[KI\]
done
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B)
\[FeS{{O}_{4}}\]
done
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C)
\[KMn{{O}_{4}}\]
done
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D)
\[{{K}_{2}}Mn{{O}_{4}}\]
done
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View Answer play_arrow
Biological concept of species is based upon reproductive isolation which is not true for one of the following pair of taxon
A)
Brassica and pisum species
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B)
Solanum and Nicotiana species
done
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C)
Raphanobrassica and Triticale
done
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D)
homo sapians and panther
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View Answer play_arrow
According to Woese, all the six Kingdoms were naturally clustered into three domains on the basis of ____ and it comes under the branch ___.
A)
23s rRNA, Omega taxonomy
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B)
16s rRNA, Chemo taxonomy
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C)
Cell wall composition, Cytotaxonomy
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D)
DNA, Karyotaxonomy
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View Answer play_arrow
In case of snake bites, the injection given to the patients contain antitoxins against snake venoms. This type of immunization is called
A)
Artificially acquired passive immunity
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B)
Naturally acquired passive immunity
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C)
Artificially acquired active immunity
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D)
Naturally acquired active immunity
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View Answer play_arrow
Which of the following is a direct method of gene transfer?
A)
Agrobacterium carrying recombinant disarmed Ti plasmid vector
done
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B)
Cosmid
done
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C)
Electroporation
done
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D)
BAG
done
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View Answer play_arrow
Self-feeder bacteria using non-sulphur aliphatic organic compounds as \[{{e}^{-}}\]and \[{{H}^{+}}\] donors for \[C{{O}_{2}}\]reduction are
A)
Photoheterotrophs
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B)
Photolithotrophs
done
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C)
Chemolithotrophs
done
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D)
Chemo-organoheterotrophs
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View Answer play_arrow
Photosynthetic protestans with siliceous cell wall show
A)
Haplontic life cycle
done
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B)
Auxospore stage
done
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C)
Heterokont flagellation
done
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D)
More than one option is correct
done
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View Answer play_arrow
Find the correct match
A)
Black bread mould - Coenocytic, trisporic acid and dikaryophase
done
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B)
Pink bread mould - Ascospore, perithecium and exogenous asexual spore
done
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C)
Rust fungi - Basidiomycetes, dolipore septa and short-lived primary mycelium
done
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D)
None of these
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View Answer play_arrow
Which one of the following is common type of motile asexual spore in chlamydomonas?
A)
Zoospore
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B)
Aplanospore
done
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C)
Hypnospore
done
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D)
Palmella stage
done
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View Answer play_arrow
Northern blot test is used for
A)
DNA analysis
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B)
RNA analysis
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C)
Analysis of proteins
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D)
Enzyme analysis
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View Answer play_arrow
The genetically engineered 'golden rice' rich in
A)
P - carotene only
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B)
P-carotene and iron
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C)
Iron only
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D)
Folic acid and iron
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View Answer play_arrow
Type of stele represented by walking fern is
A)
Dictyostele
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B)
Solenostele
done
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C)
Plectostele
done
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D)
Atactostele
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View Answer play_arrow
Monocot stem is anatomically different from dicot stem in
A)
Having homoxylous condition
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B)
Presence of hypodermis
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C)
Absence of pith
done
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D)
Absence of ground tissue
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View Answer play_arrow
Double membrane system is absent in
A)
Chlorella and chromatium
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B)
Chlorobium and Anabaena
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C)
Chondrus and frullaria
done
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D)
Ricciocarpous and Sphaerocarpous
done
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View Answer play_arrow
Tertiary lysosomes are
A)
Small vesicle - like with inactive enzymes
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B)
Heterophagosomes
done
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C)
Residual bodies
done
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D)
Autophagic vacuoles
done
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View Answer play_arrow
Cell cycle is regulated by MPF during transition of cell from
A)
\[{{G}_{1}}\to S\]
done
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B)
\[S\to {{G}_{2}}\]
done
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C)
\[{{G}_{2}}\to M\]
done
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D)
Prophase \[\to \]Metaphase
done
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View Answer play_arrow
OEC enzyme is associated with non-cyclic photo phosphorylation as donor of electrons to
A)
\[{{P}^{+}}_{680}\]
done
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B)
\[{{P}_{700}}\]
done
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C)
\[{{P}_{680}}\]
done
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D)
\[NADP{{H}^{+}}+H\]
done
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View Answer play_arrow
The common type of pollen tetrad in major group of flowering plants is
A)
Linear tetrad
done
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B)
Isobilateral tetrad
done
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C)
Formed after simultaneous cytokinesis
done
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D)
More than one option is correct
done
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View Answer play_arrow
Ovule with microphyle end which lies close to hilum in
A)
Campylotropous
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B)
Antropous
done
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C)
Amphitropous
done
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D)
Hemianatropous
done
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View Answer play_arrow
Autogamy is prevented and allogamy is promoted injasminumby
A)
Prepotency
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B)
Dicliny
done
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C)
Heterostyly
done
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D)
Herkogamy
done
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View Answer play_arrow
Which one of the following dwarf rice variety was developed by conventional breeding techniques
A)
Atomita-2
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B)
Jagannath
done
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C)
IR-24
done
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D)
Reimei
done
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View Answer play_arrow
Improved variety of sugarcane with short duration in life-cycle developed by
A)
Somaclonal Variations
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B)
Embryo Culture
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C)
Haploid Culture
done
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D)
Mutation
done
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View Answer play_arrow
Select the gene of tliJ following disorders which can be expressed in hemizygous condition in organisms
A)
Myotonic dystrophy
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B)
Muscular dystrophy
done
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C)
Cystic fibrosis
done
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D)
TSD
done
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View Answer play_arrow
Which one of the following genetic combination will produce off springs with one phenotype and four genotypes?
A)
\[AaBbcc\times aabbcc~~\]
done
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B)
\[AABBCC\times AaBbCc\]
done
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C)
\[Aa\text{ }BbCC\times aaBbCc\]
done
clear
D)
\[AA\text{ }Bb\text{ }Cc\times aa\text{ }BB\text{ }CC\]
done
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View Answer play_arrow
RNA polymerase type enzyme is involved in autocatalytic behaviour of DNA in which one of the following steps?
A)
Removal of super coiling of DNA
done
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B)
Initiation process
done
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C)
Chain elongation and proofreading
done
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D)
Unwinding of helix.
done
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View Answer play_arrow
Select incorrect with respect to lac operon
A)
Inhibitory gene (i) is constitutive gene
done
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B)
RNA polymerase is normally in blocked state
done
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C)
Controls anabolic pathway
done
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D)
Shows glucose inhibition
done
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View Answer play_arrow
Annually, plants fix \[75\times {{10}^{12}}\text{ }kg\]of carbon through photo synthesis and produce about 170 billion tonnes of dry mater in the form of
A)
GPP
done
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B)
NPP
done
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C)
NPE
done
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D)
Community productivity
done
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View Answer play_arrow
Find the group of secondary pollutants
A)
\[{{O}_{3}},\] PAN and \[S{{O}_{2}}\]
done
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B)
\[{{O}_{3}}\]and PAN
done
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C)
\[CO\]and NO
done
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D)
SPM, Ketone and VOCs
done
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View Answer play_arrow
During the life cycle, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at following larval stages, respectively
A)
Redia and Miracidium
done
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B)
Cercaria and Redia
done
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C)
Metacercaria and Cercaria
done
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D)
Miracidium and Metacercariacaria
done
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View Answer play_arrow
Which of the following incorrect match about the pathogen and disease caused?
A)
Try panosoma cruzi - Chagas disease
done
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B)
Leishmania donovani - Kala azar
done
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C)
Entamoeba histolytica - Amoebiasis
done
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D)
Aedes aegypti - Dengue fever
done
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View Answer play_arrow
Which of the following is not a matching pair of the kind of excretory organ and an animal?
A)
Organ of Bojanus - Pila
done
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B)
Protonephridia - Amphioxus
done
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C)
Green glands - Prawn
done
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D)
Flame cells - Ascaris
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View Answer play_arrow
Given below are four matching of an animal and its kind of respiratory organ
A. Scorpion book lungs B. Nereis parapodia C. Herdmania gills D. Pila pulmonary sac
The correct matching are
A)
A and B
done
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B)
A, B and C
done
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C)
A, B and D
done
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D)
A, B, C and D
done
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View Answer play_arrow
Which of the following is infective stage of Entamoeba histolytica?
A)
Magnaform
done
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B)
Minutaform
done
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C)
Mature quabrinucteated cyst
done
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D)
Trophozoite
done
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View Answer play_arrow
Which type of joint is present between the upper ends of the forearm bones?
A)
Ball and socket joint
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B)
Hinge joint
done
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C)
Pivot joint
done
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D)
Ellipsoid joint
done
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View Answer play_arrow
Which of the following hormones would be released in response to increase in blood flow to the atria of the heart?
A)
Renin
done
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B)
Aldosterone
done
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C)
Angiotensin-II
done
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D)
Atrial Natriuretic factor
done
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View Answer play_arrow
Avian pheumonia is also called as
A)
Birds flu
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B)
New castle's disease
done
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C)
Pollorum
done
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D)
Coccidiosis
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View Answer play_arrow
The age sex pyramid of developed countries is
A)
Less steep, representing stable population
done
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B)
Steep pyramid, representing growing population
done
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C)
Steep pyramid, representing stable population
done
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D)
Less steep, representing a rapidly growing population
done
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View Answer play_arrow
In which of the following organs the immature lymphocytes differentiate into antigen - sensitive lymphocytes.
A)
Spleen and lymph nodes
done
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B)
Peyer's patches of small intestine and appendix
done
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C)
Bone marrow and thymus
done
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D)
Tonsils and MALT
done
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View Answer play_arrow
What would happen to cells lacking telomerase enzyme activity?
A)
They will keep dividing
done
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B)
They will develop into normal differentiated cells
done
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C)
They will develop into actively dividing cancerous cells
done
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D)
The cells will show senescence and eventul death
done
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View Answer play_arrow
Aminiotic eggs evolved as a means to
A)
Protect the embryos from predators
done
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B)
Protect the embryos from adsorption
done
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C)
Prevent the embryo from desiccation
done
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D)
Provide space for the storage of food
done
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View Answer play_arrow
In which of the following the toxin blocks the release of acetylcholine from presynaptic terminals, and produces paralysis of respiratory muscles and death?
A)
Botulism
done
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B)
Myasthenia gravis
done
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C)
Curare
done
clear
D)
Tetanus
done
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View Answer play_arrow
Lactational amenorrhoea is based on the fact that ovulation and menstruation do not occur during the period of intense lactation following parturition. This is due to high levels of
A)
Prolactin hormone
done
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B)
FSH and LH
done
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C)
Oxytocin
done
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D)
Progesterone
done
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View Answer play_arrow
Example of compound tubular gland is
A)
Salivary glands
done
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B)
Crypts of Lieberkuhn
done
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C)
Brunners glands
done
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D)
Pancrease
done
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View Answer play_arrow
Maximum amount of carbon dioxide is transported
A)
in dissolved state
done
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B)
as carbamino hemoglobin
done
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C)
as sodium bicarbonate
done
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D)
as potassium bicarbonate
done
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View Answer play_arrow
Which of the following epithelium lines the cornea?
A)
Stratified cuboidal epithelium
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B)
Stratified squamous non - keratinised epithelium
done
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C)
Transitional epithelium
done
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D)
Stratified squamous keratinized epithelium
done
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View Answer play_arrow
Blood cholesterol lowering agent which acts by competitively inhibiting the enzyme responsible for synthesis of cholesterol is produced by
A)
Trichoderma polysporum
done
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B)
Mortierella renispora
done
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C)
Clostridium butylicum
done
clear
D)
Monascus purpureus
done
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View Answer play_arrow
In crassinucellate ovules, the sporogenous cell becomes sub-hypodermal due to
A)
formation of connective tissue
done
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B)
divisions in integument epidermis
done
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C)
formation of partial cells
done
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D)
proliferation of endothelial cells
done
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View Answer play_arrow
Ratio of \[C{{O}_{2}}\] evolved is three times more in aerobic than anaerobic respiration in
A)
Warburg effect
done
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B)
Crabtree effect
done
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C)
Kutusky effect
done
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D)
Pasteur effect
done
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View Answer play_arrow
Mutation which result in formation of a short protein due to early stoppage of polypeptide chain is
A)
Missense mutation
done
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B)
Non-sense mutation
done
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C)
Same sense mutation
done
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D)
Frame shift mutation
done
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View Answer play_arrow
Red algae differ from blue green algae in showing the presence of
A)
phycobilins
done
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B)
non flagellate cells
done
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C)
single thylakoid per lamella
done
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D)
sulphated polysaccharides
done
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View Answer play_arrow
Of all the ecosystem services, which of the following accounts for more than 10% of total cost of various ecosystem services?
A)
Recreation and nutrient cycling
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B)
Climate regulation
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C)
Soil formation
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D)
Habitat for wildlife
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Fruiting body of ergot disease causing pathogen is
A)
Hysterothecium
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B)
Cleistothecium
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C)
Ascostroma
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D)
Perithecium
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Find the incorrect match with respect to disease resistant crops
A)
Pusa Shubhra - Chilly mosaic virus
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B)
Himgiri - Hill bunt
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C)
Pusa Snow Ball K-l- Black rot
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D)
Pusa Komal - Bacterial blight
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If a flaccid cell is placed in hypertonic solution its DPD will become
A)
= OP
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B)
> OP
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C)
< OP
done
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D)
< OP
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The element which is not used in catalytic converters for automobiles is
A)
Platinum
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B)
Palladium
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C)
Strontium
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D)
Rhodium
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Different forms of shapes of leaves occur at different places on the same plants in its development period in
A)
Sonchus, Eucalyptus
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B)
Jack fruit, ficus heterophylla
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C)
Ranunclus aquatilis, sagittaria
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D)
Mustard, Limnophila heterophylla
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Find the incorrect match
A)
Cortical vascular bundles - Nyctanthus
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B)
Living sclerenchyma fibres - Tamarix
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C)
Polystelic condition - Primula
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D)
Medullary bundles ? Casuarina
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Blue light induces maximum opening of stomata because it increases the activity of
A)
PEP case
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B)
RUBISCO
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C)
Phosphorylase
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D)
Phosphatase
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Codon UGA in mitocondria
A)
Acts as a stop codon
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B)
Codes for glutamine
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C)
Codes for tryptophan
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D)
Codes for arginine
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Match the following
Column-I Column-II A. Bryophyllm 1. Tubers B. Potamogeton 2. Rhizome C. Aspidium 3. Vivipary D. Selaginella 4. Turions
A)
A-1, B-4, C-3, D-2
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B)
A-2, B-4, C-1, D-3
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C)
A-3, B-4, C-2, D-1
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D)
A-4, B-1, C-2, D-3
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Which of the following is a photolitho -organotrophic diazotroph?
A)
Gloeotheca
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B)
Nostac
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C)
Anabaena
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D)
Rhodopseudomonas
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Fluorescence phenomenon is observed when electron returns from
A)
Triplet excited state to ground state
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B)
Excited second singlet state to ground state
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C)
Excited first singlet state to ground state
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D)
Excited second singlet state to triplet excited
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Antarctic fishes can survive below
due to the
A)
Internal oxidation of fat
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B)
Development of extra solutes in cytosol
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C)
Presence of antifreeze protein in cell organelles
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D)
Development of ice nucleating proteins in the extra cellular spaces
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Higher heterogenity in habitats in a region and greater dissimilarity between communities indicates a higher
A)
local diversity
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B)
a-diversity
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C)
P-diversity
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D)
y-diversity
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Eflux of
ions to the subsidiary cells is increased by
A)
Auxin
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B)
GA
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C)
ABA
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D)
CK
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Which of the following control the trans boundary movement of hazardous wastes and their dispersal?
A)
IPCC
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B)
Basel convention
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C)
Beijing protocol
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D)
CCC
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Equisetum shows ___ sporangium and ____ embryogeny.
A)
Leptosporangiate, Exoscopic
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B)
Eusporangiate, Endoscopic
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C)
Leptosporangiate, Endoscopic
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D)
Eusporangiate, Exoscopic
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On the inhibition of succinate dehydrogenase enzyme complex in aerobic respiration in cells of kidney, what will be the number of ATP molecules produced through ETS only by three molecule of 3- phosphoglyceraldehyde?
A)
27
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B)
37
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C)
36
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D)
45
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Find the correct match with respect to dispersal mechanism
A)
Ecballium - Tumble weed
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B)
Argemone - Rolling mechanism
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C)
Rudlia - Jaculator mechanism
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D)
Amaranthus - Fountain mechanism
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Ethylene does not play a major role in ripening of
A)
Mango
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B)
Peach
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C)
Plum
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D)
Strawberry
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The antibiotic which binds to C -terminus of growing peptide chain causes premature termination of polypeptide chain is
A)
Chloramphenicol
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B)
Rifampicin
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C)
Neomycin
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D)
Puromycin
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Which of the following is not a reason for resistance shown by endospores?
A)
Thick and impereable spore coat
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B)
Low water contant
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C)
Ca-DAPA complex
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D)
Low metabolic activity
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A population of 250 phytoplanktons increased to 400 after two hours. Calculate the percent growth rate in this population
A)
100%
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B)
30%
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C)
67%
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D)
75%
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Tyioses and Callose plugs are associated with
A)
Duramen and sieve tube respectively
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B)
Alburnum and endothecium respectively
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C)
Heart wood and sapwood respectively
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D)
Primary xylem and primary phloem respectively
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The structure of puccinia which behaves as a female reproductive unit is called
A)
Spermatia
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B)
Epibasidium
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C)
Flexuous hyphae
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D)
Urediopustules
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Crossing over frequency decreases with increase in
A)
Exposure to X-rays
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B)
Distance between genes
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C)
Distance from centromere
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D)
Interference
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Rootlet of flagellum which joints two adjacent basal bodies is called
A)
Rhizoplast
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B)
Paradesmos
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C)
Blepharoplast
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D)
Flimmer
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Vitamin C enriched crop produced by IARI, New Delhi is
A)
Carrot
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B)
Pumpkin
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C)
Bitter gaurd
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D)
Spinach
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Most variable phase of cell cycle having monads in dispersed state is
A)
\[{{G}_{1}}\] phase
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B)
\[{{G}_{2}}\] phase
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C)
\[{{G}_{0}}\] phase
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D)
S phase
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Coenomegaspore is involved in formation of ______ type of embryo sac
A)
Polygonum
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B)
Oenothera
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C)
Endymion
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D)
Plumbago
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Which of the following animal is a deuterostomic
A)
Sea star
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B)
Sea pen
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C)
Sea fan
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D)
Sea mouse
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In earthworm insects and snails are placed together, which of the following is applicable to all of them?
A)
Acoelomates
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B)
Deuterostomes
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C)
Protostomes
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D)
Enterocoelic
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The bat differs from bird in having
A)
wings
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B)
four chambered heart
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C)
feathers
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D)
sweat glands in skin
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In structure the Keratin of mammalian hairs is
A)
a - helical like silk fibrion
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B)
p - pleated like silk
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C)
a - helical unlike fibrion
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D)
p - pleated unlike silk
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In cockroach the blood filled coelom is _____.
A)
Absent
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B)
Haemocoel
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C)
Filled with parenchyma
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D)
Well developed
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Read the following characters
A. Mostly terrestrial B. Body is covered by dry and cornified skin; epidermal scales or scutes C. Heart is three chambered D. Fertilization is internal
All the given characters are applicable for
A)
Exocoetus
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B)
Ichthyophis
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C)
Calotes
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D)
Columba
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In process of moving fluids in urine, which organ is not involved
A)
Collecting duct
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B)
Renal pelvis
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C)
Distal convoluted tubles
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D)
Ureter
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The function between Schwann cells is
A)
Synapse
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B)
Dendrons
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C)
Nodes of Ranvier
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D)
Plasmalemma
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Poor nutrients in top soil related to
A)
Tropical rain forest
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B)
Tundra region
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C)
Coniferous forest
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D)
Grass land biome
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Which type of hepatitis virus has ds DNA?
A)
HAV
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B)
HBV
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C)
HCV
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D)
HDV
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The most active ingredient delta-9 THC is present in
A)
Psilocybin
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B)
Marijuana
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C)
Morphine
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D)
Mescaline
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