question_answer 1) In which process the pV indicator diagram is a straight line parallel to volume axis
A)
isothermal
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B)
isobaric
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C)
irreversible
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D)
adiabatic
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question_answer 2) A body executes simple harmonic motion under the action of force F1 with a time period \[\frac{3}{5}s.\] If the force is changed to\[{{F}_{2}}\]it executes simple harmonic motion with time period \[\frac{3}{4}s.\] If both forces \[{{F}_{1}}\]and\[{{F}_{2}}\]act simultaneously in the same direction on the body, its time period will
A)
\[\frac{12}{25}s.\]
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B)
\[\frac{24}{25}s.\]
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C)
\[\frac{24}{25}s.\]
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D)
\[\frac{15}{12}s.\]
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question_answer 3) A diatomic gas is heated at constant pressure. What fraction of the heat energy is used to increase the internal energy?
A)
\[\frac{3}{5}\]
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B)
\[\frac{3}{7}\]
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C)
\[\frac{5}{7}\]
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D)
\[\frac{5}{9}\]
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question_answer 4) In interference pattern, the energy is
A)
created at the maximum
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B)
destroyed at the minimum
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C)
conserved but redistributed
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D)
All of the above
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question_answer 5) A red flower kept in green light will appear
A)
red
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B)
yellow
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C)
black
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D)
white
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question_answer 6) band playing music at a frequency\[f\] is moving towards a wall at a speed \[{{v}_{b.}}\] A motorist is allowing the band with a speed \[{{v}_{m.}}\] If \[v\] be the R speed of the sound, the expression for beat frequency heard by motorist is
A)
\[\frac{v+{{v}_{m}}}{v+{{v}_{b}}}f\]
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B)
\[\frac{v+{{v}_{m}}}{v-{{v}_{b}}}f\]
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C)
\[\frac{v+{{v}_{m}}(v+{{v}_{m}})}{{{v}^{2}}-{{v}_{b}}}f\]
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D)
\[\frac{2{{v}_{m}}(v+{{v}_{b}})}{{{v}^{2}}-{{v}_{m}}}f\]
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question_answer 7) An eye specialist prescribes spectacles having a combination of a convex lens of focal length 40 cm in contact with a concave lens of focal length 25 cm. The power of this lens combination will be
A)
+ 1.5 D
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B)
\[-1.5\text{ }D\]
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C)
+ 6.67D
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D)
\[-6.67D\]
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question_answer 8) When light wave suffers reflection at the interface between air and glass, the change of phase of reflected wave is equal to
A)
Zero
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B)
\[\pi /2\]
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C)
\[\pi \]
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D)
\[2\pi \]
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question_answer 9) A lens behaves as a converging lens in air and diverging lens in water. The refractive index of the material of the lens is
A)
equal to that of water
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B)
less than that of water
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C)
greater than that of water
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D)
Nothing can be predicted
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question_answer 10) The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately
A)
540 nm
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B)
400 nm
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C)
310 nm
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D)
220 nm
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question_answer 11) The electron emitted in beta radiation originates from
A)
inner orbits of atoms
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B)
free electron existing in nuclei
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C)
dcay of neutron in the nucleus
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D)
photon escaping from the nucleus
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question_answer 12) If elements with principal quantum number \[n\] > 4 were not allowed in nature, then the number of possible elements would be
A)
32
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B)
60
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C)
18
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D)
4
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question_answer 13) The magnifying power of telescope is high if
A)
both objective and eye-piece have short focal length
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B)
both objective and eye-piece have long focal length
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C)
the objective has a long focal length and the eye-piece has a short focal length
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D)
the objective has a short focal length and the eye piece has a long focal length
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question_answer 14)
What is the current through an ideal \[pn\]-junction diode shown in figure below?
A)
Zero
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B)
10mA
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C)
20mA
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D)
50mA
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question_answer 15) The output form of a full wave rectifier is
A)
an AC voltage
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B)
a DC voltage
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C)
Zero
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D)
a pulsating unidirectional voltage
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question_answer 16) Suitable impurities are added to a semiconductor depending on its use. This is done to
A)
increase its life
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B)
enable it to withstand high voltage
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C)
increase its electrical conductivity
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D)
increase its electrical resistivity
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question_answer 17) Absorption of X-rays is maximum in which of the following material sheets of same thickness
A)
Cu
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B)
Au
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C)
Be
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D)
Pb
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question_answer 18) Lenzs law is a consequence of the law of conservation of
A)
charge
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B)
mass
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C)
momentum
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D)
energy
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question_answer 19) A magnetic needle is kept in a non-uniform magnetic field. It experience
A)
a force only but not a torque
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B)
a force and torque both
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C)
a torque only but not a force
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D)
neither a torque nor a force
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question_answer 20) The magnitude of magnetic induction for a current carrying toroid of uniform cross-section is
A)
uniform over the whole cross-section
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B)
maximum on the outer edge
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C)
maximum on the inner edge
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D)
maximum at the centre of cross-section
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question_answer 21) Isogonic lines are those for which
A)
declination is the same at all places on the line
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B)
angle of dip is the same at the place on the line
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C)
the value of horizontal component of earths magnetic field is the same
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D)
All of the above
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question_answer 22) An electric current passes through a long straight wire. At a distance 5 cm from the wire- the magnetic field is B. The field at 20 cm froe the wire would be
A)
25
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B)
B/4
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C)
B/2
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D)
B
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question_answer 23) An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Their readings are A and V respectively. If another resistance P is connected in parallel with the voltmeter, then
A)
both A and V will increase
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B)
both A and V will decrease
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C)
A will decrease and V will increase
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D)
A will increase and V will decrease
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question_answer 24) The core of transformer is laminated to reduce the effect of
A)
copper losses
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B)
flux leakage
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C)
hysteresis loss
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D)
eddy current
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question_answer 25) The average power dissipation in pure inductance is
A)
\[\frac{1}{2}L{{I}^{2}}\]
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B)
\[2L{{I}^{2}}\]
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C)
\[\frac{1}{4}L{{I}^{2}}\]
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D)
\[\text{Zero}\]
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question_answer 26) The charge given to any conductor resides on its outer surface, because
A)
the free charge tends to be in its minimum potential energy state
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B)
the free charge tends to be in its minimum kinetic energy state
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C)
the free charge tends to be in its maximum potential energy state
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D)
the free charge tends to be in its maximum kinetic energy state
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question_answer 27) \[n\]identical mercury droplets charged to the same potential \[V\] coalesce to form a single bigger drop. The potential of new drop will be
A)
\[\frac{V}{n}\]
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B)
\[nV\]
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C)
\[n{{V}^{2}}\]
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D)
\[{{n}^{2/3}}V\]
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question_answer 28) For protecting sensitive equipment from external magnetic field, it should be
A)
wrapped with insulation around it when passing current through it
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B)
placed inside an iron can
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C)
surrounded with Cu sheet
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D)
placed inside aluminium can
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question_answer 29) The potential difference across the terminals of a battery is SO V when 11A current is drawn and 60 V when 1 A current is drawn. The emf and the internal resistance of the battery are
A)
62 V, 2 \[\Omega \]
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B)
63V, 1 \[\Omega \].
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C)
61V, 1 \[\Omega \]
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D)
64V, 2 \[\Omega \]
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question_answer 30) Four resistances 10\[\Omega \] 5 \[\Omega \] 7 \[\Omega \] and 3 \[\Omega \] are connected so that they form the sides of a rectangle AB, BC, CD, and DA respectively. Another resistance of 10 \[\Omega \] is connected across the diagonal AC. The equivalent resistance between A and B is
A)
2\[\Omega \]
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B)
5\[\Omega \]
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C)
7 a\[\Omega \]
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D)
10\[\Omega \]
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question_answer 31) The potential energy of a charged parallel plate capacitor is \[{{U}_{0.}}\] If a slab of dielectric constant is inserted between the places, then the new potential energy will be
A)
\[\frac{{{U}_{0}}}{K}\]
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B)
\[{{U}_{0}}{{K}^{2}}\]
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C)
\[\frac{{{U}_{0}}}{{{K}^{2}}}\]
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D)
\[U_{0}^{2}\]
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question_answer 32) Two similar hearer coils separately take 10 min to boil a certain amount of water. If both coils are connected in series, rime taken to boil the same amount of water will be
A)
15 min
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B)
20 min
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C)
7-5 min
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D)
25 min
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question_answer 33) Same current is being passed through a copper voltameter and a silver voltameter. The rate of increase in weights of the cathode of the two voltameters will be proportional to
A)
atomic masses
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B)
atomic number
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C)
relative densities
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D)
None of the above
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question_answer 34) Two equal and opposite charge (+ q and\[-q\]) are situated at \[x\] distance from each other, the value of potential at very far point will depend upon
A)
only on \[q\]
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B)
only on \[x\]
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C)
on \[qx\]
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D)
on\[\frac{q}{x}\]
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question_answer 35) In a potentiometer of one metre length, an unknown emf voltage source is balanced at 60 cm length of potentiometer wire, while a 3 V battery is balanced at 45 cm length. Then the emf of the unknown voltage source is
A)
3 V
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B)
2.25 V
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C)
4 V
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D)
4.5 V
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question_answer 36) A car travelling on a straight path moves with uniform velocity \[{{v}_{1}}\] for some time and with velocity \[{{v}_{2}}\] for next equal time, the average velocity is given by
A)
\[\sqrt{{{v}_{1}}{{v}_{2}}}\]
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B)
\[\left( \frac{{{v}_{1}}+{{v}_{2}}}{2} \right)\]
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C)
\[\left( \frac{1}{{{v}_{1}}}\frac{1}{{{v}_{2}}} \right)\]
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D)
\[2\left( \frac{1}{{{v}_{1}}}\frac{1}{{{v}_{2}}} \right)\]
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question_answer 37) A particle of mass m moves in a circular path radius r under the action of a force \[\frac{m{{v}_{2}}}{r}.\] The work done during its morion over half of the circumference of the circular path will be
A)
\[\left( \frac{m{{v}^{2}}}{r} \right)\times 2\pi r\]
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B)
\[\left( \frac{m{{v}^{2}}}{r} \right)\times \pi r\]
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C)
\[\frac{(2\pi r)}{\left( \frac{m{{v}^{2}}}{r} \right)}\]
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D)
zero
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question_answer 38) Dimensions of self-inductance are
A)
\[[ML{{T}^{-2}}{{A}^{-3}}]\]
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B)
\[[M{{L}^{-2}}{{T}^{-1}}{{A}^{-2}}]\]
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C)
\[[M{{L}^{2}}{{T}^{-2}}{{A}^{-2}}]\]
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D)
\[[M{{L}^{2}}{{A}^{-1}}]\]
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question_answer 39) A car of mass m is moving with momentum \[p\]. If \[\mu \], be the coefficient of friction between the tyres and the road, what will be stopping distance due to friction alone ?
A)
\[\frac{{{p}^{2}}}{2\mu g}\]
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B)
\[\frac{{{p}^{2}}}{2m\mu g}\]
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C)
\[\frac{{{p}^{2}}}{2{{m}^{2}}\mu g}\]
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D)
\[\frac{{{p}^{2}}}{2mg}\]
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question_answer 40) A neutron is moving with velocity u. It collides head on and elastically with an atom of mass number A. If the initial kinetic energy of the neutron be E, how much kinetic energy will be retained by the neutron after collision?
A)
\[{{\left( \frac{A}{A+1} \right)}^{2}}E\]
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B)
\[\frac{A}{{{(A+1)}^{2}}}E\]
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C)
\[{{\left( \frac{A-1}{A+1} \right)}^{2}}E\]
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D)
\[\frac{A-1}{{{(A+1)}^{2}}}E\]
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question_answer 41) The pH value of\[1\times {{10}^{-4}}M\text{ }NaOH\]solution is
A)
4
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B)
10
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C)
6
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D)
between 6-7
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question_answer 42) The\[C-H\]bond distance is the longest in
A)
\[{{C}_{2}}{{H}_{2}}\]
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B)
\[{{C}_{2}}{{H}_{4}}\]
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C)
\[{{C}_{2}}{{H}_{4}}B{{r}_{2}}\]
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D)
\[{{C}_{6}}{{H}_{6}}\]
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question_answer 43) Which represents the correct order of first ionisation potential of third period elements?
A)
\[Na>Mg>Al>Si\]
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B)
\[Na<Mg<Al<Si\]
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C)
\[Na<Si<Al<Mg\]
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D)
\[Na<Al<Mg<Si\]
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question_answer 44) By which of the following processes, pure nitrogen gas is prepared?
A)
\[{{(N{{H}_{4}})}_{2}}C{{r}_{2}}{{O}_{7}}\xrightarrow[{}]{\Delta }\]
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B)
\[N{{H}_{4}}Cl+NaN{{O}_{2}}\xrightarrow[{}]{\Delta }\]
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C)
\[N{{H}_{3}}+NaN{{O}_{2}}\xrightarrow[{}]{\Delta }\]
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D)
\[{{N}_{2}}O+Cu\xrightarrow[{}]{\Delta }\]
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question_answer 45) In the following reaction, \[{{C}_{2}}{{H}_{5}}OH+C{{H}_{3}}COOH\xrightarrow[-{{H}_{2}}O]{Conc.{{H}_{2}}S{{O}_{4}}}\] \[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\] \[{{C}_{2}}{{H}_{5}}OH\]actsas
A)
electrophile
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B)
nucleophile
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C)
dehydrating agent
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D)
All of the above
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question_answer 46) Which of the following orbital diagram violates Faults exclusion principle?
A)
done
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B)
done
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C)
done
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D)
done
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question_answer 47) The geometry of sulphate ion is
A)
square planar
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B)
tetrahedral
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C)
square pyramidal
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D)
octahedral
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question_answer 48) The difference between heat capacity at constant pressure and heat capacity at constant volunie for the combustion of carbon monoxide at\[27{}^\circ C\] will be
A)
\[-124.71\text{ }kJ\]
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B)
\[-1.247\text{ }J\]
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C)
\[-1.247\text{ }kJ\]
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D)
\[-124.71\text{ }J\]
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question_answer 49) IUPAC name of the given compound is \[{{H}_{3}}C\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,=\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{C}}\,COOH\]
A)
2-methylbut-2-enoic acid
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B)
3-methylbut-2-enoic acid
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C)
3-methylbut-3-enoic acid
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D)
2-methylbut-3-enoic acid
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question_answer 50) Which of the following is an aromatic compound?
A)
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B)
done
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C)
done
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D)
done
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question_answer 51) Thermodynamically, most stable form of phosphorus is
A)
red
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B)
black
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C)
white
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D)
yellow
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question_answer 52) The substance with the highest calorific value is
A)
milk
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B)
rice
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C)
ghee
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D)
egg
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question_answer 53) Gamma rays are
A)
high energy electrons
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B)
low energy electrons
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C)
high energy electro-magnetic waves
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D)
high energy positrons
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question_answer 54) What volume of\[C{{O}_{2}}\]will be liberated at NTP if 12 g of carbon is burnt in excess of oxygen?
A)
11.2 L
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B)
22.4 L
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C)
2.24 L
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D)
1.12 L
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question_answer 55) Which of the following is man-made element?
A)
Ra
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B)
\[U\]
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C)
\[Np\]
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D)
\[C\]
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question_answer 56) Four different colloids have the following Gold number. Which one has its most effective action?
A)
10
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B)
30
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C)
20
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D)
40
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question_answer 57) The number of unpaired electrons in ferrous ion is
A)
3
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B)
2
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C)
4
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D)
5
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question_answer 58) Ascorbic acid is the chemical name of
A)
vitamin\[{{B}_{6}}\]
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B)
vitamin A
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C)
vitamin C
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D)
vitamin D
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question_answer 59) Which amine of the following will not answer carbylamine reaction?
A)
Ethyl amine
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B)
Methyl amine
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C)
Dimethyl amine
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D)
Phenyl amine
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question_answer 60) For a reaction, the dimensions of rate constant are same as that of rate, hence order of reaction is
A)
0
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B)
1
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C)
2
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D)
3
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question_answer 61) The concentration (in mol/L) of the solution having osmotic pressure 0.0821 atm at 300 K will be
A)
0.33
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B)
0.066
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C)
\[0.3\times {{10}^{-2}}\]
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D)
3
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question_answer 62) Given, \[P{{b}^{2+}}/Pb=-0.126\text{ }V;\] \[Z{{n}^{2+}}/Zn=-0.763\text{ }V\]Find the emf of the Mowing cell\[Zn/Z{{n}^{2+}}(0.1M)||P{{b}^{2+}}(1M)|Pb\].
A)
\[-0.637\]
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B)
\[+0.637\]
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C)
\[>0.637\]
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D)
\[+0.889\]
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question_answer 63) Which is the most abundant metal in the earths crust?
A)
\[Fe\]
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B)
\[Al\]
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C)
\[Ca\]
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D)
\[Na\]
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question_answer 64) A hydrocarbon has carbon and hydrogen. Its molecular weight is 28. Its possible formula would be
A)
\[{{C}_{3}}{{H}_{6}}\]
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B)
\[{{C}_{2}}{{H}_{4}}\]
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C)
\[C{{H}_{4}}\]
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D)
\[{{C}_{4}}{{H}_{8}}\]
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question_answer 65) Which is an example of thermosetting polymer?
A)
Polythene
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B)
PVC
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C)
Neoprene
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D)
Bakelite
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question_answer 66) The first Noble Prize in chemistry was given to
A)
J.H. vant Hoff
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B)
Cannizaro
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C)
Mendeleef
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D)
Moseley
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question_answer 67) Strongest reducing agent is
A)
K
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B)
\[Mg\]
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C)
\[Al\]
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D)
\[Ba\]
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question_answer 68) The base found only in the nucleotides of RNA, is
A)
adenine
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B)
uracil
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C)
guanine
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D)
cytosine
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question_answer 69) Which of the following compounds does not give a precipitate with excess of\[NaOH\]?
A)
\[ZnS{{O}_{4}}\]
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B)
\[FeS{{O}_{4}}\]
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C)
\[AgN{{O}_{3}}\]
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D)
\[HgC{{l}_{2}}\]
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question_answer 70) Among the following, the correct statement is
A)
aniline is a weaker base than ammonia
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B)
in water, solubility of\[C{{H}_{3}}OH>{{C}_{2}}{{H}_{5}}OH>{{C}_{6}}{{H}_{5}}OH\]
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C)
b.p. of alkylhalide is greater than its corresponding alkane
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D)
All of the given statements are correct
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question_answer 71) Three products are obtained by the ozonolysis of penta-1, 3-diene. Out of these if two products are formaldehyde and acetaldehyde, the name of the third one is
A)
formaldehyde
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B)
ethanal
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C)
glyoxal
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D)
propanaldehyde
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question_answer 72) \[C{{H}_{2}}=CHC{{H}_{2}}CH=C{{H}_{2}}\]represents a/an
A)
conjugated system
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B)
cumulative system
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C)
isolated system
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D)
All of the above
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question_answer 73) In the presence of a catalyst, activation energy of a reaction is lowered by 2 kcal at\[27{}^\circ C\]. Hence, rate will be
A)
20 times
done
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B)
28 times
done
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C)
14 times
done
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D)
remain the same
done
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View Answer play_arrow
question_answer 74) The number of metamers of the compound with molecular formula\[{{C}_{5}}{{H}_{10}}O\]is
A)
1
done
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B)
3
done
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C)
8
done
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D)
6
done
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View Answer play_arrow
question_answer 75) The compound, with which ethanal does not react, is
A)
\[HCl\]
done
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B)
\[C{{l}_{2}}\]
done
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C)
\[PC{{l}_{5}}\]
done
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D)
aq \[NaHS{{O}_{3}}\]
done
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View Answer play_arrow
question_answer 76) The incorrect order with respect to the acidic strength is
A)
formic acid > acetic acid > propionic acid
done
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B)
cyclohexanol < phenol < benzoic acid
done
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C)
benzamide < aniline < cyclohexylamine
done
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D)
\[FC{{H}_{2}}COOH>ClC{{H}_{2}}COOH>BrC{{H}_{2}}COOOH\]
done
clear
View Answer play_arrow
question_answer 77)
Here, the compound\[X\]can be
A)
acetic acid
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B)
formaldehyde
done
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C)
formic acid
done
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D)
propionic acid
done
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View Answer play_arrow
question_answer 78) \[HCl\]molecule contains
A)
ionic bond
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B)
covalent bond
done
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C)
hydrogen bond
done
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D)
coordinate bond
done
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View Answer play_arrow
question_answer 79) Transition metals show paramagnetic behaviour. This is because of their
A)
high lattice energy
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B)
variable oxidation state
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C)
characteristic configuration
done
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D)
unpaired electrons
done
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View Answer play_arrow
question_answer 80) Which reaction is not affected by change in pressure?
A)
\[{{H}_{2}}+{{I}_{2}}\rightleftharpoons 2HI\]
done
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B)
\[2C+{{O}_{2}}\rightleftharpoons 2CO\]
done
clear
C)
\[{{N}_{2}}+3{{H}_{2}}\rightleftharpoons 2N{{H}_{3}}\]
done
clear
D)
\[PC{{l}_{5}}\rightleftharpoons PC{{l}_{3}}+C{{l}_{2}}\]
done
clear
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question_answer 81) If the solubility of calcium fluoride in pure water is x mol/L, its solubility product is
A)
\[\sqrt{2}x\]
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B)
\[2{{x}^{2}}\]
done
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C)
\[4{{x}^{3}}\]
done
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D)
\[{{x}^{2}}\]
done
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View Answer play_arrow
question_answer 82) The molarity of a solution containing 5.0 g of \[NaOH\]in 250 mL solution is
A)
0.1
done
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B)
0.5
done
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C)
1.0
done
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D)
2.0
done
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View Answer play_arrow
question_answer 83)
The following reaction is called Fried el-Crafts reaction. In this reaction X is
A)
\[R-\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\mathop{C}}\,-Cl\]
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B)
\[R-\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\mathop{C}}\,-R\]
done
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C)
\[R-\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\mathop{C}}\,-H\]
done
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D)
\[R-O-R\]
done
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View Answer play_arrow
question_answer 84) Picric acid is
A)
2, 4, 6-tribromophenol
done
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B)
2, 4, 6-trinitrotoluene
done
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C)
2, 4, 6-trinitrophenol
done
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D)
None of the above
done
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View Answer play_arrow
question_answer 85) Gravity separation process is used for the concentration of
A)
calamine
done
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B)
haematite
done
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C)
chalcopyrite
done
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D)
bauxite
done
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View Answer play_arrow
question_answer 86) Ammonium ion is
A)
a conjugate acid
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B)
a conjugate base
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C)
neither an acid nor a base
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D)
both an acid and a base
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question_answer 87) The equivalent weight of\[MnS{{O}_{4}}\]is half of its molecular weight when it is converted to
A)
\[M{{n}_{2}}{{O}_{3}}\]
done
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B)
\[Mn{{O}_{2}}\]
done
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C)
\[Mn{{O}_{4}}\]
done
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D)
\[MnO_{4}^{2-}\]
done
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View Answer play_arrow
question_answer 88) The reaction by which benzaldehyde is converted in benzyl alcohol, is
A)
Fittig reaction
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B)
Cannizaro reaction
done
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C)
Wurtz reaction
done
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D)
aldol condensation
done
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View Answer play_arrow
question_answer 89) By the ideal gas law, the pressure of 0.60 mole\[N{{H}_{3}}\]gas in a 3.00 L vessel at\[25{}^\circ C\]is
A)
48.9 atm
done
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B)
4.89 atm
done
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C)
0.489 atm
done
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D)
489 atm
done
clear
View Answer play_arrow
question_answer 90) Brown ring in the test of nitrate ion is obtained due to the formation of
A)
\[[Fe{{({{H}_{2}}O)}_{5}}NO]S{{O}_{4}}\]
done
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B)
\[[Fe{{(S{{O}_{4}})}_{2}}NO]{{H}_{2}}O\]
done
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C)
\[F{{e}_{2}}{{(S{{O}_{4}})}_{3}}.NO\]
done
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D)
None of the above
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View Answer play_arrow
question_answer 91) For a reaction\[2S{{O}_{2}}(s)+{{O}_{2}}(g)\rightleftharpoons 2S{{O}_{3}}(g);\] \[\Delta H=-188.3\text{ }kJ.\] The number of moles of\[S{{O}_{3}}\]formed is increased if
A)
temperature is increased at constant volume
done
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B)
inert gas is added to the mixture
done
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C)
\[{{O}_{2}}\]is removed from the mixture
done
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D)
volume of the reaction flask is decreased
done
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View Answer play_arrow
question_answer 92) For a first order reaction\[A\xrightarrow[{}]{{}}\]Products, the half-life is 100 s. The rate constant of the reaction is
A)
\[6.9\times {{10}^{-2}}{{s}^{-1}}\]
done
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B)
\[6.93\times {{10}^{-4}}{{s}^{-1}}\]
done
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C)
\[6.93\times {{10}^{-3}}{{s}^{-1}}\]
done
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D)
\[6.93\times {{10}^{-1}}{{s}^{-1}}\]
done
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View Answer play_arrow
question_answer 93) The rate of a gaseous reaction triples when temperature is increased by\[10{}^\circ C\]from\[25{}^\circ C\]. The energy of activation of the reaction (in kJ \[mo{{l}^{-1}}\]) will be
A)
40
done
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B)
70
done
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C)
83.8
done
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D)
200
done
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View Answer play_arrow
question_answer 94) The substance which does not show sharp melting point is
A)
\[KCl\]
done
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B)
glass
done
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C)
ice
done
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D)
diamond
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View Answer play_arrow
question_answer 95) The total number of Bravais lattice in a crystal is
A)
7
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B)
14
done
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C)
230
done
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D)
32
done
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View Answer play_arrow
question_answer 96) Two moles of an deal gas expand spontaneously into vacuum. The work done is
A)
2J
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B)
4J
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C)
Zero
done
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D)
Infinity
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question_answer 97) The heat change at constant volume\[({{Q}_{V}})\]is equal to
A)
\[\Delta E\]
done
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B)
\[\Delta H\]
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C)
\[RT\]
done
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D)
\[\Delta G\]
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View Answer play_arrow
question_answer 98) For a gaseous reaction at 300 K. \[\Delta H-\Delta E=-4.98\text{ }kJ,\]assuming that \[R=8.3\,J{{K}^{-1}}mo{{l}^{-1}},\Delta n(g)\]is
A)
1
done
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B)
2
done
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C)
\[-2\]
done
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D)
0
done
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View Answer play_arrow
question_answer 99) The pH of a solution is 4. Its\[[{{H}^{+}}]\]is
A)
4M
done
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B)
\[{{10}^{4}}M\]
done
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C)
\[{{10}^{-4}}M\]
done
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D)
\[{{10}^{-1}}M\]
done
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View Answer play_arrow
question_answer 100) The bonds present in\[{{N}_{2}}{{O}_{5}}\]are
A)
only convalent
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B)
only ionic
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C)
covalent and coordinate
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D)
covalent and ionic
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View Answer play_arrow
question_answer 101) Who coined the term gene?
A)
Johansen
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B)
Watson
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C)
Morgan
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D)
Williamson
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question_answer 102) Protein coat of a virus enclosing nucleic acid is called
A)
plasmid
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B)
capsid
done
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C)
vector
done
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D)
genome
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question_answer 103) Highest number of antibiotics are produced by
A)
Bacillus
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B)
Penicillium
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C)
Streptomyces
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D)
Cephalosporium
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question_answer 104) Which of the following is stained using carmine?
A)
Bacteria
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B)
Diatoms
done
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C)
Chromosomes
done
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D)
Viruses
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View Answer play_arrow
question_answer 105) A mature pollen grain of Pinus has
A)
2 cells
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B)
3 cells
done
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C)
4 cells
done
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D)
5 cells
done
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question_answer 106) Polyploidy can be induced by the application of
A)
auxin
done
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B)
kinetin
done
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C)
colchicine
done
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D)
ethylene
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question_answer 107) Quantasomes are present in
A)
chloroplast
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B)
mitochondria
done
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C)
Golgi body
done
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D)
lysosome
done
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View Answer play_arrow
question_answer 108) In mitochondria, enzyme cytochrome oxidase is present in
A)
outer membrane
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B)
perimitochondrial space
done
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C)
inner membrane
done
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D)
matrix
done
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View Answer play_arrow
question_answer 109) Which of the following bio-engineered bacteria is utilized for cleaning of marine oil slicks ?
A)
Escherichia coli
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B)
Pseudomonas syringae
done
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C)
Pseudomonas putida
done
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D)
Rhizoctonia solani
done
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View Answer play_arrow
question_answer 110) Green potatoes are toxic due to
A)
phytoalexins
done
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B)
solanin
done
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C)
triazine
done
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D)
hormones
done
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View Answer play_arrow
question_answer 111) Cells obtained from cancerous tumours are known as
A)
hyrbridomas
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B)
myelomas
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C)
lymphocytes
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D)
monoclonal cells
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View Answer play_arrow
question_answer 112) The plant of Triticum aestivum is
A)
haploid
done
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B)
diploid
done
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C)
tetraploid
done
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D)
hexaploid
done
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View Answer play_arrow
question_answer 113) Which of the following is a total root parasite?
A)
Cuscuta
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B)
Rafflesia
done
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C)
Santalum
done
clear
D)
Monotrapa
done
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View Answer play_arrow
question_answer 114) Which of the following tissues consist of living cells?
A)
Vessels
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B)
Tracheids
done
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C)
Companion cell
done
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D)
Sclerenchyma
done
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View Answer play_arrow
question_answer 115) Which is a useful product of epidermal origin?
A)
Saffron
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B)
Cotton fibres
done
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C)
Clove
done
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D)
Jute
done
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View Answer play_arrow
question_answer 116) Fern spores are usually
A)
haploid
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B)
diploid
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C)
triploid
done
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D)
tetraploid
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View Answer play_arrow
question_answer 117) When pollen tube enters through micropyle, the process is called
A)
porogamy
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B)
chalazogamy
done
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C)
mesogamy
done
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D)
apogamy
done
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View Answer play_arrow
question_answer 118) Outer wall of pollen grain is made up of
A)
cellulose
done
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B)
sporopollenin
done
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C)
pectocellulose
done
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D)
lignin
done
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View Answer play_arrow
question_answer 119) Nucleotides are formed by
A)
purine, sugar and phosphate
done
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B)
purine, pyrimidine and phosphate
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C)
purine, pyrimidine, sugar and phosphate
done
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D)
pyrimidine, sugar and phosphate
done
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question_answer 120) DNA replication occurs in
A)
\[{{G}_{1}}-phase\]
done
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B)
S-phase
done
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C)
\[{{G}_{2}}-phase\]
done
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D)
M-phase
done
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question_answer 121) Which of the following plant cells is not surrounded by a cell wall?
A)
Root hair cell
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B)
Stem hair cell
done
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C)
Gamete cell
done
clear
D)
Bacterial cell
done
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View Answer play_arrow
question_answer 122) Which of the following cell organelles stores hydrolytic enzymes?
A)
Centriole
done
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B)
Lysosome
done
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C)
Chromoplast
done
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D)
Chloroplast
done
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View Answer play_arrow
question_answer 123) A monocarpic plant is one, which
A)
has only one carpel
done
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B)
flowers once in a life-time
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C)
produces only one seed
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D)
produces only one fruit
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View Answer play_arrow
question_answer 124) AIDS virus contains
A)
RNA with protein
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B)
DNA with protein
done
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C)
DNA without protein
done
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D)
DNA only
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View Answer play_arrow
question_answer 125) Calyptra develops from
A)
venter wall of archegonium
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B)
outgrowth of gametophyte
done
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C)
neck wall of archegonium
done
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D)
paraphysis of the archegonial branch
done
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View Answer play_arrow
question_answer 126) Protonema is the stage in the life-cycle of
A)
Cycas
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B)
Funaria
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C)
Selaginella
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D)
Mucor
done
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View Answer play_arrow
question_answer 127) A ferm differs from a moss in having
A)
swimming archegonia
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B)
swimming antherozoids
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C)
independent gametophytes
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D)
independent sporophytes
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question_answer 128) Female cone of Pinus is a
A)
modified needles
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B)
modified long shoot
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C)
modified dwarf shoot
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D)
modified scale
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question_answer 129) Development of an embryo without fertilization is called as
A)
apomixis
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B)
polyembryony
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C)
parthenocarpy
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D)
parthenogenesis
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question_answer 130) Which of the following floral parts forms pericarp after fertilization?
A)
Nucellus
done
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B)
Outer integument
done
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C)
Ovary wall
done
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D)
Inner integument
done
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View Answer play_arrow
question_answer 131) Prothallus of the fem produces
A)
spores
done
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B)
gametes
done
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C)
Both [a] and [b]
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D)
cones
done
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View Answer play_arrow
question_answer 132) Which of the following cell organelles s associated with photorespiration?
A)
Mitochondria
done
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B)
Peroxisome
done
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C)
Chloroplast
done
clear
D)
All of these
done
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question_answer 133) The thickness of unit membrane is
A)
\[\text{20}\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
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B)
\[35\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
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C)
\[55\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
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D)
\[75\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
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question_answer 134) Chromosomes are arranged along the equator during
A)
prophase
done
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B)
metaphase
done
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C)
anaphase
done
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D)
telophase
done
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question_answer 135) Width of the DNA molecule is
A)
15 \[\overset{o}{\mathop{\text{A}}}\,\]
done
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B)
20 \[\overset{o}{\mathop{\text{A}}}\,\]
done
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C)
25 \[\overset{o}{\mathop{\text{A}}}\,\]
done
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D)
34 \[\overset{o}{\mathop{\text{A}}}\,\]
done
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View Answer play_arrow
question_answer 136) In gymnosperms, the ovule is naked because
A)
ovary wall is absent
done
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B)
integuments are absent
done
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C)
perianth is absent
done
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D)
nucellus is absent
done
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View Answer play_arrow
question_answer 137) In Funaria capsule, dispersal of spores taka place through
A)
peristomial teeth
done
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B)
annulus
done
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C)
calyptras
done
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D)
operculum
done
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View Answer play_arrow
question_answer 138) Crossing over occurs during
A)
leptotene
done
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B)
diplotene
done
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C)
pachytene
done
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D)
zygotene
done
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View Answer play_arrow
question_answer 139) Genes are made up of
A)
histones
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B)
hydrocarbons
done
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C)
polynucleotides
done
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D)
lipoproteins
done
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View Answer play_arrow
question_answer 140) The site of photosynthesis in blue-green algae is
A)
chromatophores
done
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B)
mitochondria
done
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C)
chloroplast
done
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D)
root hair
done
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View Answer play_arrow
question_answer 141) Viral infection is usually absent in
A)
phloem cells
done
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B)
xylem cells
done
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C)
pith cells
done
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D)
apical meristem
done
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View Answer play_arrow
question_answer 142) Clamp connections are found in
A)
Phycomycetes
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B)
Ascomycetes
done
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C)
Basidiomycetes
done
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D)
Deuteromycetes
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View Answer play_arrow
question_answer 143) Which of the following characters is related with telophase ?
A)
Formation of nuclear membrane
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B)
Formation of nucleolus
done
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C)
Elongation of chromosome
done
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D)
Formation of two daughter nuclei
done
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View Answer play_arrow
question_answer 144) In case of incomplete dominance, what will be the phenotypic ratio of F; generation?
A)
3 : 1
done
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B)
1: 2 : 1
done
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C)
1:1:1:1
done
clear
D)
2:2
done
clear
View Answer play_arrow
question_answer 145) Which of the following does not contain DNA?
A)
Mitochondria
done
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B)
Chloroplast
done
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C)
Peroxysome
done
clear
D)
Nucleus
done
clear
View Answer play_arrow
question_answer 146) Genes exhibiting multiple effects are known as
A)
complementary genes
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B)
pleiotropic genes
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C)
cistrons
done
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D)
pseudogenes
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View Answer play_arrow
question_answer 147) Who coined the term cistron?
A)
Muller
done
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B)
Benzer
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C)
Khorana
done
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D)
Sutton
done
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View Answer play_arrow
question_answer 148) Which of the following is responsible for the origin of lysosome?
A)
Chloroplast
done
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B)
Mitochondria
done
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C)
Golgi body
done
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D)
Ribosome
done
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View Answer play_arrow
question_answer 149) In Selaginella, trabeculae are the modification of
A)
epidermal cells
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B)
cortical cells
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C)
endodermal cells
done
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D)
pericycle cells
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question_answer 150) Tonoplast is a membrane, which surrounds
A)
ribosome
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B)
mitochondria
done
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C)
vacuole
done
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D)
cytoplasm
done
clear
View Answer play_arrow
question_answer 151) Which shows polymorphism?
A)
Physalia
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B)
Trypanosoma
done
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C)
Termite
done
clear
D)
All of these
done
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View Answer play_arrow
question_answer 152) Secondary radial symmetry is found in
A)
Cnidaria
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B)
Jelly fish
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C)
Echinodermata
done
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D)
Hemichordata
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question_answer 153) Basic unit of classification is
A)
genus
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B)
species
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C)
order
done
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D)
class
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question_answer 154) Connecting link between Annelida and Mollusca is
A)
Peripatus
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B)
Lepidosiren
done
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C)
Neopilina
done
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D)
Protopterus
done
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View Answer play_arrow
question_answer 155) Select incorrect pair
A)
Porifera - choanocytes
done
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B)
Coelenterata - nematocysts
done
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C)
Annelida - segmentation
done
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D)
Monera - eukaryote
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question_answer 156) Bilateral symmetry, metameric segmentation, coelom and open circulatory are the features of
A)
Annelida
done
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B)
Arthropoda
done
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C)
Mollusca
done
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D)
Echinodermata
done
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question_answer 157) Ancestor of man who first stood erect was
A)
Australopithecus
done
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B)
Cro-magnon
done
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C)
Java-ape man
done
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D)
Peking man
done
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question_answer 158) Core zone, buffer zone and manipulation zone are found in
A)
national park
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B)
sanctuary
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C)
tiger reserve
done
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D)
biosphere reserve
done
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View Answer play_arrow
question_answer 159) Which insecticide is more hazardous to human health ?
A)
Rotenone
done
clear
B)
Pyrethrum
done
clear
C)
DDT
done
clear
D)
Humulin
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question_answer 160) Universal donor is
A)
\[OR{{h}^{+}}\]
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B)
\[OR{{h}^{-}}\]
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C)
\[AB\text{ }R{{h}^{+}}\]
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D)
\[AB\text{ }R{{h}^{-}}\]
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question_answer 161) One of these is not concerned wiA wild-life conservation
A)
IVF
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B)
IUCN
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C)
WWF
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D)
IBWL
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question_answer 162) Largest tiger population is found in
A)
Sunderban national park
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B)
Corbett national park
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C)
Ranthambhor national park
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D)
Kanha national park
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question_answer 163) Genetic material found in Human Immunodeficiency Virus (HIV) is
A)
double stranded RNA
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B)
single stranded RNA
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C)
double stranded DNA
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D)
single stranded DNA
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question_answer 164) Gigantism and acromegaly are due to
A)
hypothyroidism
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B)
hyperthyroidism
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C)
hypopituitarism
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D)
hyperpituitarism
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question_answer 165) If a child is of O blood group and his father is of B blood group, the genotype of father is
A)
\[{{\text{I}}^{\text{O}}}{{\text{I}}^{\text{O}}}\]
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B)
\[{{\text{I}}^{\text{A}}}\,{{\text{I}}^{\text{B}}}\]
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C)
\[{{\text{I}}^{\text{O}}}\,{{\text{I}}^{\text{B}}}\]
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D)
\[{{\text{I}}^{\text{O}}}\,{{\text{I}}^{\text{A}}}\]
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question_answer 166) Spermatogenesis is under the regulatory in fluence of
A)
ADH
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B)
FSH
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C)
LH
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D)
STH
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question_answer 167) Which of the following can be controlled by using biopesticides ?
A)
Insects
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B)
Diseases
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C)
Weeds
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D)
All of these
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question_answer 168) Which hormone is secreted in a woman if pregnancy has occurred ?
A)
Estrogen
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B)
Progesterone
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C)
Luteinizing hormone
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D)
Chorionic gonadotropin
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question_answer 169) Product of biotechnology is
A)
transgenic crops (GM crops)
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B)
humulin
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C)
biofertilizer
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D)
All of the above
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question_answer 170) Phase common in aerobic and anaerobic respiration is
A)
Krebs cycle
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B)
glycolysis
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C)
glycogenolysis
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D)
ETS
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question_answer 171) Oxyntic cells secrete
A)
\[\text{HCl}\]
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B)
trypsin
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C)
\[\text{NaOH}\]
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D)
pepsinogen
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question_answer 172) Menstruation is due to sudden
A)
reduction of FSH
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B)
increase of LH
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C)
reduction in estrogen and progesterone
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D)
None of the above
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question_answer 173) Correctly matched set of phylum, class and example is
A)
Protozoa-Mastigophora-Entamoeba
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B)
Mollusca-Bivalvia-Pinctata
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C)
Arthropoda-Diplopoda-Scolopendra
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D)
Chordata-Cyclostomata-Phrynosoma
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question_answer 174) Urea synthesis occurs in
A)
kidney
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B)
liver
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C)
brain
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D)
muscles
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question_answer 175) Which is common to kidney and skeleton in mammals?
A)
Cortex
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B)
Medulla
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C)
Pelvis
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D)
Radius
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question_answer 176) Which is regarded as urinary bladder of embryo ?
A)
Amnion
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B)
Allantois
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C)
Chorion
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D)
Yolk sac
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question_answer 177) Deficiency of vitamin\[{{\text{B}}_{\text{12}}}\]causes
A)
cheilosis
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B)
thalassemia
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C)
beri-beri
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D)
pernicious anaemia
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question_answer 178) Blood is a kind of
A)
areolar tissue
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B)
connective tissue
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C)
fluid connective tissue
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D)
reticular connective tissue
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question_answer 179) Which of these is used to control human population?
A)
Estrogen + progesterone
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B)
lUCDandMTP
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C)
Tubectomy and vasectomy
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D)
All of these
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question_answer 180) Addiction to alcohol causes
A)
cirrhosis
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B)
epilepsy
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C)
neurosis
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D)
psychosis
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question_answer 181) The most primitive vertebrates are
A)
Ostracoderms
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B)
Cephalochordates
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C)
Placederms
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D)
Cyclostomes
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question_answer 182) Change in the number of body parts is called
A)
continuous variation
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B)
discontinuous variation
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C)
meristic variation
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D)
substantive variation
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question_answer 183) Which has an additional X chromosome ?
A)
Turners syndrome
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B)
Klinefelters syndrome
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C)
Super female
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D)
Downs syndrome
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question_answer 184) Origin of life occurred in
A)
Precambrian
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B)
Coenozoic
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C)
Palaeozoic
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D)
Mesozoic
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question_answer 185) Branch of zoology dealing with the study : fishes is called
A)
Arthrology
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B)
Ichthyology
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C)
Saurology
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D)
Herpetology
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question_answer 186) Theory of continuity of germplasm propounded by
A)
Mendel
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B)
Lamarck
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C)
Weismann
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D)
Haeckel
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question_answer 187) Who discovered oocysts in the stomach of female Anopheles 7
A)
Ronald Ross
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B)
Charles Lavern
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C)
Golgi
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D)
Lamble
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question_answer 188) Epimysium, perimysium and endomysium are found in
A)
nerve
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B)
bloodvessel
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C)
striated muscle
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D)
uterus
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question_answer 189) Endothelium is made up of
A)
squamous cells
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B)
cuboidal cells
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C)
columnar cells
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D)
stratified epithelium
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question_answer 190) Bipolar neurons occur in
A)
vertebrate embryos
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B)
retina of eye
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C)
brain and spinal cord
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D)
skeletal muscles
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question_answer 191) Glissons capsules are found, in which organ of mammals?
A)
Stomach
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B)
Kidney
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C)
Tesris
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D)
Liver
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question_answer 192) Production of glucose from amino acids, fatty acids and glycerol is called
A)
glycogenesis
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B)
gluconeogenesis
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C)
glycogenolysis
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D)
glycolysis
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question_answer 193) Which is called Hamburger shift?
A)
Hydrogen shift
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B)
Bicarbonate shift
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C)
Chloride shift
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D)
Sodium shift
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question_answer 194) Papillary muscles are found in mammalian
A)
auricles
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B)
ventricles
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C)
pinna
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D)
eyes
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question_answer 195) Which foramen is paired in mammalian brain?
A)
Foramen of Luschka
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B)
Foramen of Magendie
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C)
Foramen of Monro
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D)
mter-ventricular foramen
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question_answer 196) Corpus luteum produces
A)
progesterone
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B)
estrogen
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C)
luteotropin hormone
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D)
luteinizing hormone
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question_answer 197) Axis vertebra is identified by
A)
sigmoid notch
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B)
deltoid ridge
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C)
odontoid process
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D)
centrum
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question_answer 198) Which is thickened to form organ of Corti ?
A)
Reissners membrane
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B)
Basilar membrane
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C)
Tectorial membrane
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D)
All of the above
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question_answer 199) Which stage of silkworm secretes silk ?
A)
Adult
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B)
Larva
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C)
Cocoon
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D)
Pupa
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question_answer 200) Real product of apiculture is
A)
honey
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B)
bee wax
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C)
Both [a] and [b]
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D)
None of these
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