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question_answer1) A coil in the shape of an equilateral triangle of side (is suspended between the pole pieces of a permanent magnet such that \[\vec{B}\] is in plane of the coil. If due to a current i in the triangle a torque t acts on it, the side 2 of the triangle is:
A)
\[\frac{2}{\sqrt{3}}{{\left( \frac{\tau }{Bi} \right)}^{1/2}}\]
done
clear
B)
\[\frac{2}{\sqrt{3}}\left( \frac{\tau }{Bi} \right)\]
done
clear
C)
\[2{{\left( \frac{\tau }{\sqrt{3}\,Bi} \right)}^{1/2}}\]
done
clear
D)
\[\frac{1}{\sqrt{3}}\,\frac{\tau }{Bi}\]
done
clear
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question_answer2) Two batteries, one of emf 18 V and internal resistance \[2\,\,\Omega \] and the other of emf 12 V and internal resistance \[1\,\,\Omega \], are connected as shown. The voltmeter V will record a reading of:
A)
15 V
done
clear
B)
30 V
done
clear
C)
14 V
done
clear
D)
18 V
done
clear
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question_answer3) A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q are at distance of 2m and 3m respectively from the source. The ratio of the intensities of the waves at P and Q is:
A)
9 : 4
done
clear
B)
2 : 3
done
clear
C)
3 : 2
done
clear
D)
4 : 9
done
clear
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question_answer4) A bomb of mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The velocity of 18 kg mass is \[6\,m{{s}^{-1}}\]. The kinetic energy of the other mass is:
A)
256 J
done
clear
B)
486 J
done
clear
C)
524 J
done
clear
D)
324 J
done
clear
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question_answer5) A drum of radius R and mass M, rolls down without slipping along an inclined plane of angle \[\theta \]. The frictional force:
A)
converts translational energy to rotational energy
done
clear
B)
dissipates energy as heat
done
clear
C)
decreases the rotational motion
done
clear
D)
decreases the rotational and translational motion
done
clear
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question_answer6) Imagine a new planet having the same density as that of earth but it is 3 times bigger than the earth in size. If the acceleration due to gravity on the surface of earth is g and that on the surface of the new planet is g', then:
A)
\[g'=3\,g\]
done
clear
B)
\[g'=\frac{g}{9}\]
done
clear
C)
\[g'=9\,g\]
done
clear
D)
\[g'=27\,g\]
done
clear
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question_answer7) A network of four capacitors of capacity equal to \[{{C}_{1}}=C,\,\,{{C}_{2}}=2C,\,\,{{C}_{3}}=3C\] and \[{{C}_{4}}=4C\] are connected to a battery as shown in the figure The ratio of the charges on \[{{C}_{2}}\] an \[{{C}_{4}}\] is:
A)
\[\frac{22}{3}\]
done
clear
B)
\[\frac{3}{22}\]
done
clear
C)
\[\frac{7}{4}\]
done
clear
D)
\[\frac{4}{7}\]
done
clear
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question_answer8) Which of the following circular rods, (given radius \[r\] and length \[l\]) each made of the same material and whose ends are maintained at the same temperature will conduct most heat ?
A)
\[r=2{{r}_{0}};\,l=2{{l}_{0}}\]
done
clear
B)
\[r=2{{r}_{0}};\,l={{l}_{0}}\]
done
clear
C)
\[r={{r}_{0}};\,l={{l}_{0}}\]
done
clear
D)
\[r={{r}_{0}};\,l=2{{l}_{0}}\]
done
clear
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question_answer9) In the reaction \[_{1}^{2}H+\,_{1}^{3}H\,\to \,_{2}^{4}He+\,_{0}^{1}n\], if the binding energies of \[_{1}^{2}H\,,\,_{2}^{3}H\] and \[_{2}^{4}He\] are respectively a, b and c (in MeV), then the energy (in MeV) released in-this reaction is:
A)
\[c+a-b\]
done
clear
B)
\[c-a-b\]
done
clear
C)
\[a+b+c\]
done
clear
D)
\[a+b-c\]
done
clear
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question_answer10)
A very long straight wire carries a current I. At the instant when a charge + Q at point P has velocity \[\vec{v}\], as shown, the force on the charge is: 
A)
opposite to ox
done
clear
B)
along ox
done
clear
C)
opposite to oy
done
clear
D)
along oy
done
clear
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question_answer11) Energy levels A, B and C of a certain atom correspond to increasing values of energy i.e., \[{{E}_{A}}<{{E}_{B}}<{{E}_{C}}\]. If \[{{\lambda }_{1}},\,{{\lambda }_{2}}\] and \[{{\lambda }_{3}}\] are wavelengths of radiations corresponding to transitions C to B, B to A and C to A respectively, which of the following relations is correct?
A)
\[{{\lambda }_{3}}={{\lambda }_{1}}+{{\lambda }_{2}}\]
done
clear
B)
\[{{\lambda }_{3}}=\frac{{{\lambda }_{1}}{{\lambda }_{2}}}{{{\lambda }_{1}}+{{\lambda }_{2}}}\]
done
clear
C)
\[{{\lambda }_{1}}+{{\lambda }_{2}}+{{\lambda }_{3}}=0\]
done
clear
D)
\[\lambda _{3}^{2}=\lambda _{1}^{2}+\lambda _{2}^{2}\]
done
clear
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question_answer12) The work functions for metals A, B and C are respectively 1.92 eV, 2.0 eV and 5 eV. According to Einstein's equation, the metals which will emit photoelectrons for a radiation of wavelength \[4100\overset{\text{o}}{\mathop{\text{A}}}\,\] is/are:
A)
none
done
clear
B)
A only
done
clear
C)
A and B only
done
clear
D)
all the three metals
done
clear
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question_answer13) The nuclei of which one of the following pairs of nuclei are isotones?
A)
\[_{34}S{{e}^{74}},{{\,}_{31}}G{{a}^{71}}\]
done
clear
B)
\[_{42}M{{o}^{92}}\,,{{\,}_{40}}Z{{r}^{92}}\]
done
clear
C)
\[_{38}S{{r}^{84}},{{\,}_{38}}S{{r}^{86}}\]
done
clear
D)
\[_{20}C{{a}^{40}},\,{{\,}_{16}}{{S}^{32}}\]
done
clear
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question_answer14)
As per this diagram a point charge +q is placed at the origin O. Work done in taking another point charge-Q from the point A [co-ordinates (0,a)] to another points [co-ordinates (a, 0)] along the straight path AB is : 
A)
zero
done
clear
B)
\[\left( \frac{-qQ}{4\pi {{\varepsilon }_{0}}}\frac{1}{{{a}^{2}}} \right)\sqrt{2}a\]
done
clear
C)
\[\left( \frac{qQ}{4\pi {{\varepsilon }_{0}}}\frac{1}{{{a}^{2}}} \right)\cdot \frac{a}{\sqrt{2}}\]
done
clear
D)
\[\left( \frac{qQ}{4\pi {{\varepsilon }_{0}}}\frac{1}{{{a}^{2}}} \right)\sqrt{2}a\]
done
clear
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question_answer15)
As a result of change in the magnetic flux linked to the closed loop shown in the figure, an emf V volt is induced in the loop. The work done (joules) in taking a charge Q coulomb once along the loop is: 
A)
QV
done
clear
B)
zero
done
clear
C)
2 QV
done
clear
D)
QV/2
done
clear
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question_answer16)
For the network shown in the figure, the value of the current i is: 
A)
\[\frac{9V}{35}\]
done
clear
B)
\[\frac{5V}{18}\]
done
clear
C)
\[\frac{5V}{9}\]
done
clear
D)
\[\frac{18V}{5}\]
done
clear
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question_answer17) The circular motion of a particle with constant speed is:
A)
simple harmonic but not periodic
done
clear
B)
periodic and simple harmonic
done
clear
C)
neither periodic nor simple harmonic
done
clear
D)
periodic but not simple harmonic
done
clear
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question_answer18) Particle executing simple harmonic motion of amplitude 5 cm has maximum speed of 31.4 cm/s. The frequency of its oscillation is:
A)
3 Hz
done
clear
B)
2 Hz
done
clear
C)
4 Hz
done
clear
D)
1 Hz
done
clear
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question_answer19) The ratio of the dimensions of Planck's constant and that of the moment of inertia is the dimension of:
A)
frequency
done
clear
B)
velocity
done
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C)
angular momentum
done
clear
D)
rime
done
clear
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question_answer20) Which of the following processes is reversible?
A)
Transfer of heat by radiation
done
clear
B)
Electrical heating of a nichrome wire
done
clear
C)
Transfer of heat by conduction
done
clear
D)
Isothermal compression
done
clear
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question_answer21) The temperature of inversion of a thermocouple is \[{{620}^{\text{o}}}C\] and the neutral temperature is \[{{300}^{\text{o}}}C\]. What is the temperature of cold junction?
A)
\[{{20}^{\text{o}}}C\]
done
clear
B)
\[{{320}^{\text{o}}}C\]
done
clear
C)
\[-{{20}^{\text{o}}}C\]
done
clear
D)
\[{{40}^{\text{o}}}C\]
done
clear
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question_answer22) A photosensitive metallic surface has work function, \[h\,{{v}_{0}}\]. If photons of energy \[2h{{v}_{0}}\] fall on this surface, the electrons come out with a maximum velocity of \[4\times {{10}^{6}}\,m/s\]. When the photon energy is increased to \[5\,h{{v}_{0}}\], then maximum velocity of photoelectrons will be:
A)
\[2\times {{10}^{6}}\,m/s\]
done
clear
B)
\[2\times {{10}^{7}}\,m/s\]
done
clear
C)
\[8\times {{10}^{5}}\,m/s\]
done
clear
D)
\[8\times {{10}^{6}}\,m/s\]
done
clear
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question_answer23) Fission of nuclei is possible because the binding energy per nucleon in them:
A)
increases with mass number at high mass numbers
done
clear
B)
decreases with mass number at high mass numbers
done
clear
C)
increases with mass number at low mass numbers
done
clear
D)
decreases with mass number at low mass numbers
done
clear
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question_answer24) Application of a forward bias to a p-n junction:
A)
increases the number of donors on the n-side
done
clear
B)
increases the electric field in the depletion zone
done
clear
C)
increases the potential difference across the depletion zone
done
clear
D)
widens the depletion zone
done
clear
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question_answer25) The displacement \[x\] of a particle varies with time \[t\] as \[x=a{{e}^{-at}}+b{{e}^{\beta t}}\], where \[a,\,b,\,\,\alpha \] and \[\beta \] are positive constants. The velocity of the particle will:
A)
go on decreasing with time
done
clear
B)
be independent of \[\alpha \] and \[\beta \]
done
clear
C)
drop to zero when \[\alpha =\beta \]
done
clear
D)
go on increasing with time
done
clear
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question_answer26)
Two charges q1 and q2 are placed 30 cm apart as shown in the figure. A third charge q3 is moved along the arc of a circle of radius 40 cm from C to D. The change in the potential energy of the system is \[\frac{{{q}_{3}}}{4\pi {{\varepsilon }_{0}}}\] k, where k is: 
A)
\[8{{q}_{2}}\]
done
clear
B)
\[8{{q}_{1}}\]
done
clear
C)
\[6{{q}_{2}}\]
done
clear
D)
\[6{{q}_{1}}\]
done
clear
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question_answer27) In any fission process the ratio \[\frac{mass\,of\,fission\,products}{mass\,of\,parent\,nucleus}\,is\,:\]
A)
less than 1
done
clear
B)
greater than 1
done
clear
C)
equal to 1
done
clear
D)
depends on the mass of parent nucleus
done
clear
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question_answer28) An ideal gas heat engine operates in Carnot cycle between \[{{227}^{\text{o}}}C\] and \[{{127}^{\text{o}}}C\]. It absorbs \[6\times {{10}^{4}}\] cal of heat at higher temperature. Amount of heat converted to work is:
A)
\[2.4\times {{10}^{4}}\,cal\]
done
clear
B)
\[6\times {{10}^{4}}\,cal\]
done
clear
C)
\[1.2\times {{10}^{4}}\,cal\]
done
clear
D)
\[4.8\times {{10}^{4}}\,cal\]
done
clear
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question_answer29) If a vector \[2\hat{i}+3\hat{j}+8\hat{k}\] is perpendicular to the vector \[4\hat{j}-4\hat{i}+\alpha \hat{k},\] then the value of a is:
A)
-1
done
clear
B)
\[\frac{1}{2}\]
done
clear
C)
\[-\frac{1}{2}\]
done
clear
D)
1
done
clear
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question_answer30) Zener diode is used for:
A)
producing oscillations in an oscillator
done
clear
B)
amplification
done
clear
C)
stabilization
done
clear
D)
rectification
done
clear
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question_answer31)
A force F acting on an object varies with distance \[x\] as shown here. The force is in N and \[x\] is in m. The work done by the force in moving the object from x = 0 to x = 6 m is: 
A)
4.5 J
done
clear
B)
13.5 J
done
clear
C)
9.0 J
done
clear
D)
18.0 J
done
clear
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question_answer32) A stone tied to the end of a string of 1 m long is whirled in a horizontal circle with a constant speed. If the stone makes 22 revolutions in 44 s, what is the magnitude and direction of acceleration of the stone?
A)
\[\frac{\pi }{2}\] \[m{{s}^{-2}}\]and direction along the radius towards the centre
done
clear
B)
\[{{\pi }^{2}}\,m{{s}^{-2}}\]and direction along the radius away from centre
done
clear
C)
\[{{\pi }^{2}}\,m{{s}^{-2}}\] and direction along the radius towards the centre
done
clear
D)
\[{{\pi }^{2}}\,m{{s}^{-2}}\] and direction along the tangent to the circle
done
clear
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question_answer33) If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by \[{{\mu }_{d}},{{\mu }_{p}}\] and \[{{\mu }_{f}}\]respectively, then:
A)
\[{{\mu }_{d}}\ne 0\,\,and\,\,{{\mu }_{f}}\ne 0\]
done
clear
B)
\[{{\mu }_{p}}=0\,and\,{{\mu }_{f}}\ne 0\]
done
clear
C)
\[{{\mu }_{d}}=0\,\,and\,\,{{\mu }_{p}}\ne 0\]
done
clear
D)
\[{{\mu }_{d}}\ne 0\,and\,{{\mu }_{p}}=0\]
done
clear
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question_answer34)
In a circuit, L, C and R are connected in series with an alternating voltage source of frequency f. The current leads the voltage by 
. The value of C is:
A)
\[\frac{1}{2\pi f\,(2\pi fL+R)}\]
done
clear
B)
\[\frac{1}{\pi f\,(2\pi fL+R)}\]
done
clear
C)
\[\frac{1}{2\pi f\,(2\pi fL-R)}\]
done
clear
D)
\[\frac{1}{\pi f\,(2\pi fL-R)}\]
done
clear
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question_answer35) The angular resolution of a 10 cm diameter telescope at a wavelength of \[5000\overset{\text{o}}{\mathop{\text{A}}}\,\] is of the -order of:
A)
\[{{10}^{6}}rad\]
done
clear
B)
\[{{10}^{-2}}rad\]
done
clear
C)
\[{{10}^{-4}}\,rad\]
done
clear
D)
\[{{10}^{-6}}rad\]
done
clear
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question_answer36) Two vibrating tuning forks produce progressive waves given by \[{{y}_{1}}=4\sin 500\,\pi t\] and \[{{y}_{2}}=2\sin \,506\,\pi t\]. Number of beats produced per minute is:
A)
360
done
clear
B)
180
done
clear
C)
3
done
clear
D)
60
done
clear
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question_answer37) When a wire of uniform cross-section a, length \[l\] and resistance R is bent into a complete circle, resistance between two of diametrically opposite points will be:
A)
\[\frac{R}{4}\]
done
clear
B)
\[\frac{R}{8}\]
done
clear
C)
4 R
done
clear
D)
\[\frac{R}{2}\]
done
clear
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question_answer38) Carbon, silicon and germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by \[{{({{E}_{g}})}_{C}},\] \[{{({{E}_{g}})}_{Si}}\] and \[({{E}_{g}}){{G}_{Ge}}\] respectively. Which one of the following relationships is true in their case?
A)
\[{{({{E}_{g}})}_{C}}>{{({{E}_{g}})}_{Si}}\]
done
clear
B)
\[{{({{E}_{g}})}_{C}}={{({{E}_{g}})}_{Si}}\]
done
clear
C)
\[{{({{E}_{g}})}_{C}}<({{E}_{g}})Ge\]
done
clear
D)
\[{{({{E}_{g}})}_{C}}<{{({{E}_{g}})}_{Si}}\]
done
clear
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question_answer39) If \[{{\lambda }_{v}},\,{{\lambda }_{x}}\,\]and \[{{\lambda }_{m}}\]represent the wavelengths of visible light, X-rays and microwaves respectively, then:
A)
\[{{\lambda }_{m}}>{{\lambda }_{x}}>{{\lambda }_{v}}\]
done
clear
B)
\[{{\lambda }_{v}}>{{\lambda }_{m}}>{{\lambda }_{x}}\]
done
clear
C)
\[{{\lambda }_{m}}>{{\lambda }_{v}}>{{\lambda }_{x}}\]
done
clear
D)
\[{{\lambda }_{v}}>{{\lambda }_{x}}>{{\lambda }_{m}}\]
done
clear
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question_answer40) Two boys are standing at the ends A and B of a ground, where AB = a. The boy at B starts running in a direction perpendicular to AB with velocity \[{{v}_{1}}\]. The boy at A starts running simultaneously with velocity v and catches the other boy in a time t, where t is:
A)
\[\frac{a}{\sqrt{{{v}^{2}}+v_{1}^{2}}}\]
done
clear
B)
\[\sqrt{\frac{{{a}^{2}}}{{{v}^{2}}-v_{1}^{2}}}\]
done
clear
C)
\[\frac{a}{(v-{{v}_{1}})}\]
done
clear
D)
\[\frac{a}{(v+{{v}_{1}})}\]
done
clear
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question_answer41) A 5-A fuse wire can withstand a maximum power of 1 W in circuit. The resistance of the fuse wire is:
A)
0.2 \[\Omega \]
done
clear
B)
5 \[\Omega \]
done
clear
C)
0.4 \[\Omega \]
done
clear
D)
0.04 \[\Omega \]
done
clear
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question_answer42) Two bodies have their moments of inertia \[l\] and \[2\,l\] respectively about their axis of rotation. If their kinetic energies of rotation are equal, their angular momenta will be in the ratio:
A)
1 : 2
done
clear
B)
\[\sqrt{2}\,:1\]
done
clear
C)
2 : 1
done
clear
D)
\[1:\sqrt{2}\]
done
clear
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question_answer43) An electron moves in a circular orbit with a uniform speed v. It produces a magnetic field B, at the centre of the circle. The radius of the circle is proportional to:
A)
\[\frac{B}{v}\]
done
clear
B)
\[\frac{v}{B}\]
done
clear
C)
\[\sqrt{\frac{v}{B}}\]
done
clear
D)
\[\sqrt{\frac{B}{v}}\]
done
clear
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question_answer44) Choose the only false statement from the following:
A)
Substances with energy gap of the order of 10 eV are insulators
done
clear
B)
The conductivity of a semiconductor increases with increases in temperature
done
clear
C)
In conductors the valence and conduction bands may overlap
done
clear
D)
The resistivity of a semiconductor increases with increase in temperature
done
clear
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question_answer45) If the angle between the vectors \[\vec{A}\] and \[\vec{B}\] is \[\theta \], the value of the product \[(\vec{B}\times \vec{A}).\vec{A}\] is equal to:
A)
\[B{{A}^{2}}\cos \theta \]
done
clear
B)
\[B{{A}^{2}}\sin \theta \]
done
clear
C)
\[B{{A}^{2}}\sin \theta \cos \theta \]
done
clear
D)
zero
done
clear
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question_answer46) The moment of inertia of a uniform circular disc of radius R and mass M about an axis passing from the edge of the disc and normal to the disc is:
A)
\[\frac{1}{2}\,M{{R}^{2}}\]
done
clear
B)
\[M{{R}^{2}}\]
done
clear
C)
\[\frac{7}{2}M{{R}^{2}}\]
done
clear
D)
\[\frac{3}{2}M{{R}^{2}}\]
done
clear
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question_answer47) Copper has face-centered cubic (fcc) lattice with interatomic spacing equal to \[2.54\,\overset{\text{o}}{\mathop{\text{A}}}\,\]. The value of lattice constant for this lattice is:
A)
\[1.27\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
clear
B)
\[5.08\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
clear
C)
\[2.54\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
clear
D)
\[3.59\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
clear
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question_answer48) The total energy of an electron in the first excited state of hydrogen is about -3.4 eV. Its kinetic energy in this state is:
A)
-3.4eV
done
clear
B)
-6.8eV
done
clear
C)
6.8 eV
done
clear
D)
3.4 Ev
done
clear
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question_answer49) For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is:
A)
2
done
clear
B)
\[\frac{1}{2}\]
done
clear
C)
\[\frac{1}{\sqrt{2}}\]
done
clear
D)
\[\sqrt{2}\]
done
clear
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question_answer50) A ball is thrown vertically upward. It has a speed of 10 m/s when it has reached one half of its maximum height. How high does the ball rise? (Taking \[g=10\,m/{{s}^{2}}\])
A)
15 m
done
clear
B)
10 m
done
clear
C)
20 m
done
clear
D)
5 m
done
clear
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question_answer51) Which amongst the following is the most stable carbocation?
A)
\[\begin{align} & C{{H}_{3}}-\underset{|}{\mathop{\overset{+}{\mathop{C}}\,}}\,-H \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}} \\ \end{align}\]
done
clear
B)
\[\begin{align} & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}} \\ & C{{H}_{3}}-\underset{|}{\mathop{\overset{|}{\mathop{{{C}^{+}}}}\,}}\, \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}} \\ \end{align}\]
done
clear
C)
\[\overset{+}{\mathop{C}}\,{{H}_{3}}\]
done
clear
D)
\[C{{H}_{3}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]
done
clear
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question_answer52) Products of the following reaction: \[C{{H}_{3}}C\equiv C.C{{H}_{2}}C{{H}_{3}}\underset{(2)\,Hydrolysis}{\mathop{\xrightarrow{(1)\,{{O}_{3}}}}}\,\,......are\,:\]
A)
\[C{{H}_{3}}CHO+C{{H}_{3}}C{{H}_{2}}CHO\]
done
clear
B)
\[C{{H}_{3}}COOH+C{{H}_{3}}COC{{H}_{3}}\]
done
clear
C)
\[C{{H}_{3}}COOH+HOOC.C{{H}_{2}}C{{H}_{3}}\]
done
clear
D)
\[C{{H}_{3}}COOH+C{{O}_{2}}\]
done
clear
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question_answer53) At \[{{25}^{\text{o}}}C,\] the dissociation constant of a base, BOH, is \[1.0\times {{10}^{-12}}\]. The concentration of hydroxyl ions in 0.01 M aqueous solution of the base would be:
A)
\[2.0\times {{10}^{-6}}\,mol\,{{L}^{-1}}\]
done
clear
B)
\[1.0\times {{10}^{-5}}\,mol\,{{L}^{-1}}\]
done
clear
C)
\[1.0\times {{10}^{-6}}\,mol\,{{L}^{-1}}\]
done
clear
D)
\[1.0\times {{10}^{-7}}\,mol\,{{L}^{-1}}\]
done
clear
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question_answer54) Which one of the following pairs represents stereoisomerism?
A)
Chain isomerism and rotational isomerism
done
clear
B)
Structural isomerism and geometric isomerism
done
clear
C)
Linkage isomerism and geometric isomerism
done
clear
D)
Optical isomerism and geomertric isomerism
done
clear
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question_answer55)
Aniline in a set of reactions yielded a product D. 
The structure of die product D would be:
A)
\[{{C}_{6}}{{H}_{5}}C{{H}_{2}}>{{H}_{2}}\]
done
clear
B)
\[{{C}_{6}}{{H}_{5}}NHC{{H}_{2}}C{{H}_{3}}\]
done
clear
C)
\[{{C}_{6}}{{H}_{5}}NHOH\]
done
clear
D)
\[{{C}_{6}}{{H}_{5}}C{{H}_{2}}OH\]
done
clear
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question_answer56) The correct order in which the O?O bond length increases in the following is:
A)
\[{{H}_{2}}{{O}_{2}}<{{O}_{2}}<{{O}_{3}}\]
done
clear
B)
\[{{O}_{3}}<{{H}_{2}}{{O}_{2}}<{{O}_{2}}\]
done
clear
C)
\[{{O}_{2}}<{{O}_{3}}<{{H}_{2}}{{O}_{2}}\]
done
clear
D)
\[{{O}_{2}}<{{H}_{2}}{{O}_{2}}<{{O}_{3}}\]
done
clear
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question_answer57) The mass of carbon anode consumed (giving only carbondioxide) in the production of 270 kg of aluminium metal from bauxite by the Hall process is: (Atomic mass Al = 27)
A)
180 kg
done
clear
B)
270 kg
done
clear
C)
540 kg
done
clear
D)
90 kg
done
clear
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question_answer58) In a set of reactions, acetic acid yielded a product D. \[C{{H}_{3}}COOH\xrightarrow[{}]{SOC{{l}_{2}}}A\underset{Anhyd.\,AlC{{l}_{3}}}{\mathop{\xrightarrow{Benzene}}}\,B\xrightarrow[{}]{HCN}C\xrightarrow[{}]{HOH}D\] The structure of D would be:
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
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question_answer59) The cell membranes are mainly composed of:
A)
carbohydrates
done
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B)
proteins
done
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C)
phospholipids
done
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D)
fats
done
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question_answer60)
The major organic product formed from the following reaction: 
A)
done
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B)
done
clear
C)
done
clear
D)
done
clear
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question_answer61) The number of moles of \[KMn{{O}_{4}}\] reduced by one mole of KI in alkaline medium is:
A)
one fifth
done
clear
B)
five
done
clear
C)
one
done
clear
D)
two
done
clear
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question_answer62) Which of the following molecules has trigonal planar geometry?
A)
\[I{{F}_{3}}\]
done
clear
B)
\[PC{{l}_{3}}\]
done
clear
C)
\[N{{H}_{3}}\]
done
clear
D)
\[B{{F}_{3}}\]
done
clear
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question_answer63) The aqueous solution containing which one of the following ions will be colourless? (Atomic no. : Sc = 21, Fe = 26, Ti = 22, Mn = 25)
A)
\[S{{c}^{3+}}\]
done
clear
B)
\[F{{e}^{2+}}\]
done
clear
C)
\[T{{i}^{3+}}\]
done
clear
D)
\[M{{n}^{2+}}\]
done
clear
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question_answer64) Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionization enthalpy?
A)
Vanadium (Z = 23)
done
clear
B)
Chromium (Z = 24)
done
clear
C)
Iron (2 = 26)
done
clear
D)
Manganese (Z = 25)
done
clear
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question_answer65) Which one of the following compounds is most acidic?
A)
\[Cl-C{{H}_{2}}-C{{H}_{2}}-OH\]
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
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question_answer66) A reaction occurs spontaneously if:
A)
\[T\Delta S<\Delta H\]and both \[\Delta H\] and \[\Delta S\] are +ve
done
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B)
\[T\Delta S>\Delta H\] and both \[\Delta H\] and \[\Delta S\] are +ve
done
clear
C)
\[T\Delta S=\Delta H\]and both \[\Delta H\] and \[\Delta S\] are +ve
done
clear
D)
\[T\Delta S>\Delta H\] and \[\Delta H\] is + ve and \[\Delta S\] is ?ve
done
clear
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question_answer67)
The monomer of the polymer: 
A)
done
clear
B)
\[{{(C{{H}_{3}})}_{2}}C=C{{(C{{H}_{3}})}_{2}}\]
done
clear
C)
\[C{{H}_{3}}CH=CH.C{{H}_{3}}\]
done
clear
D)
\[C{{H}_{3}}CH=C{{H}_{2}}\]
done
clear
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question_answer68) The correct sequence of increasing covalent character is represented by:
A)
\[LiCl<NaCl<BeC{{l}_{2}}\]
done
clear
B)
\[BeC{{l}_{2}}<NaCl<LiCl\]
done
clear
C)
\[NaCl<LiCl<BeC{{l}_{2}}\]
done
clear
D)
\[BeC{{l}_{2}}<LiCl<NaCl\]
done
clear
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question_answer69) What is the correct relationship between the pHs of isomolar solutions of sodium oxide \[(p{{H}_{1}})\], sodium sulphide \[(p{{H}_{2}})\] sodium selenide \[(p{{H}_{3}})\] and sodium telluride \[(p{{H}_{4}})\]?
A)
\[p{{H}_{1}}>p{{H}_{2}}\approx p{{H}_{3}}>p{{H}_{4}}\]
done
clear
B)
\[p{{H}_{1}}<p{{H}_{2}}<p{{H}_{3}}<p{{H}_{4}}\]
done
clear
C)
\[p{{H}_{1}}<p{{H}_{2}}<p{{H}_{3}}\approx p{{H}_{4}}\]
done
clear
D)
\[p{{H}_{1}}>p{{H}_{2}}>p{{H}_{3}}>p{{H}_{4}}\]
done
clear
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question_answer70) Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction?
A)
Exothermic and decreasing disorder
done
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B)
Endothermic and increasing disorder
done
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C)
Exothermic and increasing disorder
done
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D)
Endothermic and decreasing disorder
done
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question_answer71) The vapour pressure of two liquids P and Q are 80 and 60 torr, respectively. The total vapour pressure of solution obtained by mixing 3 moles of P and 2 moles of Q would be:
A)
140 torr
done
clear
B)
20 torr
done
clear
C)
68 torr
done
clear
D)
72 torr
done
clear
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question_answer72) Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions?
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
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question_answer73) For a first order reaction \[A\xrightarrow[{}]{{}}B\,\], the reaction rate at reactant concentration of 0.01 M is found to be \[2.0\times {{10}^{-5}}\,mol\,{{L}^{-1}}\,{{s}^{-1}}\]. The half life period of the reaction is:
A)
220 s
done
clear
B)
30 s
done
clear
C)
300 s
done
clear
D)
347 s
done
clear
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question_answer74) Which of the following is the electron deficient molecule?
A)
\[{{B}_{2}}{{H}_{6}}\]
done
clear
B)
\[{{C}_{2}}{{H}_{6}}\]
done
clear
C)
\[P{{H}_{3}}\]
done
clear
D)
\[Si{{H}_{4}}\]
done
clear
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question_answer75) A nuclide of an alkaline earth metal undergoes radioactive decay by emission of three \[\alpha \]-particles in succession. The group of the periodic table to which the resulting daughter element would belong is:
A)
Group 14
done
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B)
Group 16
done
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C)
Group 4
done
clear
D)
Group 6
done
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question_answer76) The surface tension of which of the following liquid is maximum?
A)
\[{{H}_{2}}O\]
done
clear
B)
\[{{C}_{6}}{{H}_{6}}\]
done
clear
C)
\[C{{H}_{3}}OH\]
done
clear
D)
\[{{C}_{2}}{{H}_{5}}OH\]
done
clear
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question_answer77) The absolute enthalpy of neutralisation of the reaction: MgO(s) + 2HCI (aq) \[\to \]\[MgC{{l}_{2}}(ag)+{{H}_{2}}O(l)\] will be:
A)
less than \[-57.33\,kJ\,mo{{l}^{-1}}\]
done
clear
B)
\[-57.33\,kJ\,mo{{l}^{-1}}\]
done
clear
C)
greater than \[-57.33\,kJ\,mo{{l}^{-1}}\]
done
clear
D)
\[-57.33\,kJ\,mo{{l}^{-1}}\]
done
clear
View Answer play_arrow
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question_answer78) Which one of the following forms micelles in aqueous solution above certain concentration?
A)
Urea
done
clear
B)
Dodecyl trimethyl ammonium chloride
done
clear
C)
Pyridinium chloride
done
clear
D)
Glucose
done
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View Answer play_arrow
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question_answer79) Electrolytic reduction of nitrobenzene in weakly acidic medium gives:
A)
aniline
done
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B)
nitrosobenzene
done
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C)
N-phenylhydroxylamine
done
clear
D)
p-hydroxyaniline
done
clear
View Answer play_arrow
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question_answer80) Equilibrium constants \[{{K}_{1}}\] and \[{{K}_{2}}\] for the following equilibria: \[{{N}_{2}}(g)+\frac{1}{2}{{O}_{2}}\,N{{O}_{2}}(g)\,and\,\] \[2N{{O}_{2}}(g)\,2NO(g)+{{O}_{2}}(g)\] are related as:
A)
\[{{K}_{2}}=\frac{1}{{{K}_{1}}}\]
done
clear
B)
\[{{K}_{2}}=K_{1}^{2}\]
done
clear
C)
\[{{K}_{2}}=\frac{{{K}_{1}}}{2}\]
done
clear
D)
\[{{K}_{2}}=\frac{1}{K_{1}^{2}}\]
done
clear
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question_answer81) Which of the following would have a permanent dipole moment?
A)
\[B{{F}_{3}}\]
done
clear
B)
\[Si{{F}_{4}}\]
done
clear
C)
\[S{{F}_{4}}\]
done
clear
D)
\[Xe{{F}_{4}}\]
done
clear
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question_answer82) Which of the following undergoes nucleophilic substitution exclusively by \[{{S}_{N}}1\] mechanism?
A)
Benzyl chloride
done
clear
B)
Ethyl chloride
done
clear
C)
Chlorobenzene
done
clear
D)
Isopropyl chloride
done
clear
View Answer play_arrow
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question_answer83) The rate of reaction between two reactants A and B decreases by a factor of 4, if die concentration of reactant B is doubled. The order of this reaction with respect to reactant B is:
A)
-1
done
clear
B)
-2
done
clear
C)
1
done
clear
D)
2
done
clear
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question_answer84) In a face-centered cubic lattice, a unit cell is shared equally by how many unit cells?
A)
8
done
clear
B)
4
done
clear
C)
2
done
clear
D)
6
done
clear
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question_answer85) A solution of urea (mol. mass \[56\,g\,mo{{l}^{-1}}\]) boils at 100.18°C at the atmospheric pressure. If \[{{k}_{f}}\] and \[{{k}_{b}}\] for water are 1.86 and \[0.512K\,kg\,mo{{l}^{-1}}\] respectively, die above solution will freeze at:
A)
-6.54°C
done
clear
B)
6.54°C
done
clear
C)
0.654°C
done
clear
D)
- 0.654°C
done
clear
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question_answer86) Which functional group -participates in disulphide bond formation in proteins?
A)
Thiolactone
done
clear
B)
Thiol
done
clear
C)
Thioether
done
clear
D)
Thioester
done
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question_answer87) Which one of the following is an inner orbital complex as well as diamagnetic in behaviour? (Atomic no. : Zn = 30, Cr = 24, Co = 27, Ni = 28)
A)
\[{{[Zn\,{{(N{{H}_{3}})}_{6}}]}^{2+}}\]
done
clear
B)
\[{{[Cr{{(N{{H}_{3}})}_{6}}]}^{3+}}\]
done
clear
C)
\[{{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}\]
done
clear
D)
\[{{[Ni\,{{(N{{H}_{3}})}_{6}}]}^{2+}}\]
done
clear
View Answer play_arrow
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question_answer88)
The chirality of the compound 
is:
A)
R
done
clear
B)
S
done
clear
C)
Z
done
clear
D)
E
done
clear
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question_answer89) \[{{H}_{2}}S\] gas when passed through a solution of cations containing HCl precipitates the cations of second group of qualitative analysis but not those belonging to the fourth group. It is because:
A)
presence of HCl decreases the sulphide ion concentration
done
clear
B)
presence of HCl increases the sulphide ion concentration
done
clear
C)
solubility product of group II sulphides is more than that of group IV sulphides
done
clear
D)
sulphides of group IV cations are unstable in HCl
done
clear
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question_answer90) Which one of the following oxides is expected to exhibit paramagnetic behaviour?
A)
\[C{{O}_{2}}\]
done
clear
B)
\[S{{O}_{2}}\]
done
clear
C)
\[Cl{{O}_{2}}\]
done
clear
D)
\[Si{{O}_{2}}\]
done
clear
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question_answer91) Which one of the following is expected to exhibit optical isomerism? (en = ethylenediamine)
A)
\[cis-[Pt{{(N{{H}_{3}})}_{2}}C{{l}_{2}}]\]
done
clear
B)
\[trans-[Co{{(en)}_{2}}C{{l}_{2}}]\]
done
clear
C)
trans-\[[Pt{{(N{{H}_{3}})}_{2}}C{{l}_{2}}]\]
done
clear
D)
\[cis-[Co{{(en)}_{2}}C{{l}_{2}}]\]
done
clear
View Answer play_arrow
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question_answer92) The energy of second Bohr orbit of the hydrogen atom is \[-328\,\,mJ\,mo{{l}^{-1}};\] hence the energy of fourth Bohr orbit would be:
A)
\[-41\,\,kJ\,mo{{l}^{-1}}\]
done
clear
B)
\[-1312\,kJ\,mo{{l}^{-1}}\]
done
clear
C)
\[-164\,kJ\,mo{{l}^{-1}}\]
done
clear
D)
\[-82\,kJ\,mo{{l}^{-1}}\]
done
clear
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question_answer93) The correct order of acid strength is:
A)
\[HClO<HCl{{O}_{2}}<HCl{{O}_{3}}<HCl{{O}_{4}}\]
done
clear
B)
\[HCl{{O}_{4}}<HClO<HCl{{O}_{2}}<HCl{{O}_{3}}\]
done
clear
C)
\[HCl{{O}_{2}}<HCl{{O}_{3}}<HCl{{O}_{4}}<HClO\]
done
clear
D)
\[HCl{{O}_{4}}<HCl{{O}_{3}}<HCl{{O}_{2}}<HClO\]
done
clear
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question_answer94) The main reason for larger number of oxidation states exhibited by the actinides than the corresponding lanthanides, is:
A)
lesser energy difference between \[5f\] and 6d orbitals than between \[4f\] and 5d orbitals
done
clear
B)
larger atomic size of actinides than the lanthanides
done
clear
C)
more energy difference between 5f and 6d orbitals than between 4f and 5d orbitals
done
clear
D)
greater reactive nature of the actinides than the lanthanides
done
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View Answer play_arrow
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question_answer95) Names of some compounds are given. Which one is not correct in IUPAC system?
A)
\[\underset{\text{3-methyl-2 butanol}}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{CH}}\,-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}}}\,\]
done
clear
B)
\[\underset{\text{4-methyl-2-pentyne}}{\mathop{C{{H}_{3}}-C\equiv C}}\,-CH{{(C{{H}_{3}})}_{2}}\]
done
clear
C)
\[\underset{\text{2-ethyl-3 methyl-but-1-ene}}{\mathop{C{{H}_{3}}-C{{H}_{2}}-\underset{\begin{smallmatrix} || \\ C{{H}_{2}} \end{smallmatrix}}{\mathop{C}}\,-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}}}\,\]
done
clear
D)
\[\underset{\text{3-methyl-4 ehtyl heptane}}{\mathop{C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-\underset{\begin{smallmatrix} | \\ C{{H}_{2}}C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{2}}C{{H}_{3}}}}\,\]
done
clear
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question_answer96) Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?
A)
Cl < F < S < O
done
clear
B)
O < S < F < Cl
done
clear
C)
S < O < Cl < F
done
clear
D)
F < Cl < O < S
done
clear
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question_answer97) A solution has a 1 : 4 mole ratio of pentane to hexane. The vapour pressure of the pure hydrocarbons at 20°C are 440 mm of Hg for pentane and 120 mm of Hg for hexane. The mole fraction of pentarie in the vapour phase would be:
A)
0.549
done
clear
B)
0.200
done
clear
C)
0.786
done
clear
D)
0.478
done
clear
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question_answer98) 4.5 g of aluminium (at. mass 27 amu) is deposited at cathode from \[A{{l}^{3+}}\] solution by a certain quantity of electric charge. The volume of hydrogen produced at STP from \[{{H}^{+}}\] ions in solution by the same quantity of electric charge will be:
A)
22.4 L
done
clear
B)
44.8 L
done
clear
C)
5.6 L
done
clear
D)
11.2 L
done
clear
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question_answer99) The best method for the separation of naphthalene and benzoic acid from their mixture is:
A)
chromatography
done
clear
B)
crystallization
done
clear
C)
distillation
done
clear
D)
sublimation
done
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question_answer100) The mole fraction of the solute in one molal aqueous solution is:
A)
0.027
done
clear
B)
0.036
done
clear
C)
0.018
done
clear
D)
0.009
done
clear
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question_answer101) The main organelle involved in modification and routing of newly synthesized proteins to their destinations is:
A)
mitochondria
done
clear
B)
endoplasmic reticulum
done
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C)
lysosome
done
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D)
chloroplast
done
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question_answer102) There are two opposing views about origin of Modern man. According to one view Homo erectus in Asia were the ancestors of modern man. A study of variations of DNA however suggested African origin of Modem man. What kind of observation on DNA variation could suggest this?
A)
Greater variation in Africa than in Asia
done
clear
B)
Variation only in Asia and no variation in Africa
done
clear
C)
Greater variation in Asia than in Africa
done
clear
D)
Similar variation in Africa and Asia
done
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question_answer103) The world's highly prized wool yielding 'Pashmina' breed is:
A)
sheep
done
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B)
goat
done
clear
C)
goat-sheep cross
done
clear
D)
Kashmir sheep-Afghan sheep cross
done
clear
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question_answer104) Grey crescent is the area:
A)
at the point of entry of sperm into ovum
done
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B)
just opposite to the site of entry of sperm into ovum
done
clear
C)
at the animal pole
done
clear
D)
at the vegetal pole
done
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View Answer play_arrow
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question_answer105) Photosynthesis in \[{{C}_{4}}\] plants is relatively less limited by atmospheric \[C{{O}_{2}}\] levels because:
A)
four carbon acids are the primary initial \[C{{O}_{2}}\] fixation products
done
clear
B)
the primary fixation of \[C{{O}_{2}}\] is mediated via PEP carboxylase
done
clear
C)
effective pumping of \[C{{O}_{2}}\] into bundle sheath cells
done
clear
D)
RUBISCO in \[{{C}_{4}}\] plants has higher affinity for \[C{{O}_{2}}\]
done
clear
View Answer play_arrow
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question_answer106) At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell?
A)
During entire prophase
done
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B)
During telophase
done
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C)
During S-phase
done
clear
D)
During \[{{G}_{2}}\] stage of prophase
done
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question_answer107) There exists a dose association between the alga and the fungus within a lichen. The fungus:
A)
fixes the atmospheric nitrogen for the alga
done
clear
B)
provides protection, anchorage and absorption for the alga
done
clear
C)
provides food for the alga
done
clear
D)
releases oxygen for the alga
done
clear
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question_answer108) For retting of jute the fermenting microbe used is:
A)
Helkobactor pylori
done
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B)
Mcthophilic bacteria
done
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C)
Streptococcus lactin
done
clear
D)
Butyric acid bacteria
done
clear
View Answer play_arrow
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question_answer109) A student wishes to study the cell structure under a light microscope having 10X eyepiece and 45X objective. He should illuminate the object by which one of the following colours of light so as to get the best possible resolution?
A)
Yellow
done
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B)
Green
done
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C)
Blue
done
clear
D)
Red
done
clear
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question_answer110) The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is:
A)
20 mm Hg
done
clear
B)
75 mm Hg
done
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C)
30 mm Hg
done
clear
D)
50 mm Hg
done
clear
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question_answer111) At which latitude, heat gain through insolation approximately equals heat loss through terrestrial radiation?
A)
\[{{66}^{o}}\] North and South
done
clear
B)
\[22\frac{1}{2}{{\,}^{o}}\] North and South
done
clear
C)
\[{{40}^{o}}\] North and South
done
clear
D)
\[42\frac{1}{2}{{\,}^{o}}\] North and South
done
clear
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question_answer112) A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease but none of the daughters are affected. Which of the following mode of inheritance do you suggest for this disease?
A)
Autosomal dominant
done
clear
B)
Sex-linked dominant
done
clear
C)
Sex-limited recessive
done
clear
D)
Sex-linked recessive
done
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question_answer113) In Ornithine cycle, which of the following wastes are removed from the blood?
A)
Urea and urine
done
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B)
Ammonia and urea
done
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C)
\[C{{O}_{2}}\] and ammonia
done
clear
D)
\[C{{O}_{2}}\] and urea
done
clear
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question_answer114) Telomerase is an enzyme which is a:
A)
repetitive DNA
done
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B)
RNA
done
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C)
simple protein
done
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D)
ribonucleoprotein
done
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question_answer115) During transcription holoenzyme RNA polymerase binds to a DNA sequence and the DNA assumes a saddle like structure at that point. What is that sequence called?
A)
CAAT box
done
clear
B)
GGTT box
done
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C)
AAAT box
done
clear
D)
TATA box
done
clear
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question_answer116) Centromere is required for:
A)
transcription
done
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B)
crossing over
done
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C)
cytoplasmic cleavage
done
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D)
movement of chromosomes towards poles
done
clear
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question_answer117) Damage to thymus in a child may lead to:
A)
a reduction in haemoglobin content of blood
done
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B)
a reduction in stem cell production
done
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C)
loss of antibody mediated immunity
done
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D)
loss of cell mediated immunity
done
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question_answer118) Prolonged liberal irrigation of agricultural fields is likely to create the problem of:
A)
acidity
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B)
aridity
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C)
metal toxicity
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D)
salinity
done
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question_answer119) Chlorophyll in chloroplasts is located in:
A)
grana
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B)
pyrenoid
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C)
stroma
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D)
both (a) and (c)
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question_answer120) Three crops that contribute maximum to global food grain production are:
A)
wheat, rice and maize
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B)
wheat, maize and sorghum
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C)
rice, maize and sorghum
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D)
wheat, rice and barley
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question_answer121) Genes for cytoplasmic male sterility in plants are generally located in:
A)
mitochondrial genome
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B)
cytosol
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C)
chloroplast genome
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D)
nuclear genome
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question_answer122) Which one of the following hydrolyses internal phosphodiester bonds in a polynucleotide chain?
A)
Lipase
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B)
Exonuclease
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C)
Endonuclease
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D)
Protease
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question_answer123) Match items in column-I with those in Column-II. Column-I Column-II A. Peritrichous flagellation 1. Ginkgo B. Living fossil 2. Macrocystes C. Khizophore 3. Escherichia coli D. Smallest flowering plant 4. SelagmeHa E. Largest perennial alga 5. Wolffia Select the correct answer from the following:
A)
Codes: A B C D E 2 1 3 4 5
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B)
5 3 2 5 1
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C)
1 2 5 3 2
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D)
3 1 4 5 2
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question_answer124) The name of Norman Borlaug is associated with:
A)
Green revolution
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B)
Yellow revolution
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C)
White revolution
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D)
Blue revolution
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question_answer125) G-6-P dehydrogenase deficiency is associated with haemolysis of:
A)
lymphocytes
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B)
RBCs
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C)
platelets
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D)
leucocytes
done
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question_answer126) In which one pair both the plants can be vegetatively propagated by leaf pieces?
A)
Bryophyllum and Kalanchoe
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B)
Chrysanthemum and Agave
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C)
Agave and Kalanchoe
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D)
Asparagus and Bryophyllum
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question_answer127) According to IUCN red list what is the status of red Panda (Athurus fulgens)?
A)
Vulnerable species
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B)
Critically endangered species
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C)
Extinct species
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D)
Endangered species
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question_answer128) Which of the following substances, if introduce in the blood stream, would cause coagulation, at the site of its introduction?
A)
Fibrinogen
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B)
Prothrombin
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C)
Heparin
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D)
Thromboplastin
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question_answer129) E. coli cells with a mutated Z gene of the lac operon cannot grow in medium containing only lactose as the source of energy because:
A)
in the presence of glucose, E. coli cells do not utilize lactose
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B)
they cannot transport lactose from the medium into the cell
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C)
the lac operon is constitutively active in these cells
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D)
they cannot synthesize functional \[\beta \]-galactosidase
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question_answer130) Top-shaped multiciliate male gametes and the mature seed which bears only one embryo with two cotyledons, are characteristic features of:
A)
polypetalous angiosperms
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B)
gamopetalous angiosperms
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C)
conifers
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D)
cycads
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question_answer131) Production of a human protein in bacteria by genetic engineering is possible because:
A)
bacterial cell can carry out the RNA splicing reactions
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B)
the human chromosome can replicate in bacterial cell
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C)
the mechanism of gene regulation is identical in humans and bacteria
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D)
the genetic code is universal
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question_answer132) From the following statements select the wrong one:
A)
millepedes have two pairs of appendages in each segment of the body
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B)
prawn has two pairs of antennae
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C)
animals belonging to phylum-Porifera are exclusively marine
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D)
nematocysts are characteristic of the phylum-Cnidaria
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question_answer133) Nucleotide are building blocks of nucleic acids, nucleotide is a composite molecule formed by:
A)
(base-sugar-phosphate)
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B)
base-sugar-OH
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C)
base-sugar-phosphate
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D)
sugar-phosphate
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question_answer134) More than 70% of world's freshwater is contained in:
A)
Antarctica
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B)
Glaciers and Mountains
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C)
Greenland
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D)
Polar ice
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question_answer135) Which one of the following pairs is mismatched?
A)
Biomass burning?release of \[C{{O}_{2}}\]
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B)
Fossil fuel burning?release of \[C{{O}_{2}}\]
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C)
Nuclear power?radioactive wastes
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D)
Solar energy?green house effect
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question_answer136) Which one of the following characters is not typical of the class-mammalia?
A)
Seven cervical vertebrae
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B)
Thecodont dentition
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C)
Ten pairs of cranial nerves
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D)
Alveolar lungs
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question_answer137) Which of the following is the simplest amino acid?
A)
Tyrosine
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B)
Asparagine
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C)
Glycine
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D)
Alanine
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question_answer138) Barophilic prokaryotes:
A)
grow slowly in highly alkaline frozen lakes at high altitudes
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B)
occur in water containing high concentrations of barium hydroxide
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C)
grow and multiply in very deep marine sediments
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D)
readily grown and divides in sea water enriched in any soluble salt of barium
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question_answer139) Auxospores and hormocysts are formed, respectively, by:
A)
several diatoms and a few cyanobacteria
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B)
several cyanobacteria and several diatoms
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C)
some diatoms and several cyanobacteria
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D)
some cyanobacteria and many diatoms
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question_answer140) Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these:
A)
enhance oxidative metabolism
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B)
are conjugated proteins
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C)
are exclusively synthesized in the body of a living organism as at present
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D)
help in regulating metabolism
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question_answer141) Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution?
A)
Development of transgenic animals
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B)
Production of 'Dolly? the sheep by cloning
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C)
Prevalence of pesticide resistant insects
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D)
Development of organs from 'stem cells' for organ transplantation
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question_answer142) As compared to a \[{{C}_{3}}\] plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by \[{{C}_{4}}\] plants:
A)
2
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B)
6
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C)
0
done
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D)
12
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question_answer143) In a man, abducens nerve is injured. Which one of the following functions will be affected?
A)
Movement of the eye ball
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B)
Swallowing
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C)
Movement of the tongue
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D)
Movement of the neck
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question_answer144) An important step in the manufacture of pulp for paper industry from the woody tissues of plants is the:
A)
preparation of pure cellulose by removing lignin
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B)
removal of oils present in the wood by treatment with suitable chemicals
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C)
removal of water from the wood by prolonged heating at approximately \[{{50}^{o}}C\]
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D)
treatment of wood with chemical that breakdown cellulose
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question_answer145) Protein synthesis in an animal cell occurs:
A)
only on the ribosomes present in cytosol
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B)
on ribosomes present in cytoplasm as well as in mitochondria
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C)
only on ribosomes attached to the nuclear envelope and endoplasmic reticulum
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D)
on ribosomes present in the nucleolus as well as in cytoplasm
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question_answer146) Which of the following is not true for a species?
A)
Members of a species can interbreed
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B)
Variations occurs among members of a species
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C)
Each species is reproductively isolated from every other species
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D)
Gene flow does not occur between the populations of a species
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question_answer147) One of the most important functions of botanical gardens is that:
A)
one can observe tropical plants there
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B)
they allow ex situ conservation of germplasm
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C)
they provide the natural habitat for wild life
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D)
they provide a beautiful area for recreation
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question_answer148) The ability of the venus flytrap to capture insects is due to:
A)
chemical stimulation by the prey
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B)
a passive process requiring no special ability on the part of the plant
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C)
specialized ?muscle-like? cells
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D)
rapid turgor pressure changes
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question_answer149) Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example:
A)
enlargement of body size by swallowing air in puffer fish
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B)
melanism in moths
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C)
poison fangs in snakes
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D)
colour change in chameleon
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question_answer150) At a particular locus, frequency of 'A' allele is 0.6 and that of 'a' is 0.4. What would be the frequency of heterozygotes in a random mating population at equilibrium?
A)
0.16
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B)
0.48
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C)
0.36
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D)
0.24
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question_answer151) Which one of the following experiments suggests that simplest living organisms could not have originated spontaneously from non-living matter?
A)
Microbes did not appear in stored meat
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B)
Larvae could appear in decaying organic matter
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C)
Microbes appeared from unsterilized organic matter
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D)
Meat was not spoiled, when heated and kept sealed in a vessel
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question_answer152) Biodiversity act of India was passed by the Parliament in the year:
A)
1996
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B)
1992
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C)
2002
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D)
2000
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question_answer153) During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP?
A)
Conversion of pyruvic acid to acetyl Co-A
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B)
Electron transport chain
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C)
Glycolysis
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D)
Krebs cycle
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question_answer154) A woman with normal vision, but whose father was colour blind, marries a colourblind man. Suppose that the fourth child of this couple was a boy. This boy:
A)
must have normal colour vision
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B)
will be partially colourblind since he is heterozygous for the colourblind mutant allele
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C)
must be colourblind
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D)
may be colourblind or may be of normal vision
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question_answer155) Ectophloic siphonostele is found in:
A)
Adiantum and Cucurbitaceae
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B)
Osmunda and Equisetum
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C)
Marsilea and Botiychium
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D)
Dicksonia and maiden hair fern
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question_answer156) Which of the following represents the endible part of the fruit of litchi?
A)
Pericarp
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B)
Mesocarp
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C)
Juicy aril
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D)
Endocarp
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question_answer157) Carbohydrates, the most abundant biomoiecules on earth, are produced by:
A)
all bacteria, fungi and algae
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B)
fungi, algae and green plant cells
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C)
some bacteria, algae and green plant cells
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D)
viruses, fungi and bacteria
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question_answer158) Identify the correctly matched pair:
A)
Montreal protocol - Global warming
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B)
Kyoto protocol - Climatic change
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C)
Ramsar convention - Ground water pollution
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D)
Basal convention - Biodiversity conservation
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question_answer159) Which of the following is not a hereditary disease?
A)
Cretinism
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B)
Cystic fibrosis
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C)
Thalassaemia
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D)
Haemophilia
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question_answer160) The deficiencies of micro-nutrients, not only affects growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport?
A)
Cu, Mn, Fe
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B)
Co, Ni, Mo
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C)
Mn, Co, Ca
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D)
Ca, K, Na
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question_answer161) de Vries gave his mutation theory on organic evolution while working on:
A)
Akhea rosea
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B)
Drosophila melanogaster
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C)
Oenothera lamarckiana
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D)
Pisum sativum
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question_answer162) One of the examples of the action of the autonomous nervous system is:
A)
knee-jerk response
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B)
pupillary reflex
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C)
swallowing of food
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D)
peristalsis of the intestines
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question_answer163) Which of the following is not used for disinfection of drinking water?
A)
Phenyl
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B)
Chloramine
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C)
Chlorine
done
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D)
Ozone
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question_answer164) Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on:
A)
proton gradient
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B)
accumulation of K ions
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C)
accumulation of Na ions
done
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D)
membrane potential
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question_answer165) Parkinson's disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter:
A)
acetylcholine
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B)
norepinephrine
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C)
dopamine
done
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D)
GABA
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question_answer166) All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia:
A)
can induce root nodules on many plant species
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B)
can fix nitrogen in the free-living state
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C)
like Rhizobium, it usually infects its host plant through root hair deformation and stimulates cell proliferation in the host's cortex
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D)
forms specialized vesicles in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hopanoids
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question_answer167) An acromian process is characteristically found in die:
A)
pelvic girdle of mammals
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B)
skull of frog
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C)
pectoral girdle of mammals
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D)
sperm of mammals
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question_answer168) In a type of apomixis known as adventive embryony, embryos develop directly from the:
A)
nucellus or integuments
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B)
synergids or antipodals in an embryo sac
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C)
accessory embryo sacs in the ovule
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D)
zygote
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question_answer169) Through which cell of the embryo sac, does the pollen tube enter the embryo sac?
A)
Egg cell
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B)
Central cell
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C)
Persistant synergid
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D)
Degenerated synergid
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question_answer170) Epithelial cells of the intestine involved in food absorption have on their surface:
A)
pinocytic vesicles
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B)
phagocytic vesicles
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C)
zymogen granules
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D)
micro-villi
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question_answer171) A patient is generally advised to specially; consume more meat, lentils, milk and eggs in diet only when he suffers from:
A)
kwashiorkor
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B)
rickets
done
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C)
anaemia
done
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D)
scurvy
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question_answer172) Which one of the following pairs is mismatched?
A)
Savanna ? Acacia trees
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B)
Prairie ? epiphytes
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C)
Tundra ? permafrost
done
clear
D)
Coniferous forest ? evergreen trees
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question_answer173) Which of the following is the relatively most accurate method for dating of fossils?
A)
Potassium - argon method
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B)
Uranium- lead method
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C)
Electron - spin resonance method
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D)
Radio - carbon method
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question_answer174) Which one of the following represents an ovule, where the embryo sac becomes horse-shoe shaped and the funiculus and micropyle are close to each other?
A)
Circinotropous
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B)
Anatropous
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C)
Amphitropous
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D)
Atropous
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question_answer175) Potometer works on the principle of:
A)
amount of water absorbed equals the amount transpired
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B)
osmotic pressure
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C)
root pressure
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D)
potential difference between the tip of the tube and that of the plant
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question_answer176) In a woody dicotyledonous tree, which of the following parts will mainly consist of primary tissues?
A)
Stem and root
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B)
All parts
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C)
Shoot tips and root tips
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D)
Flowers, fruits and leaves
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question_answer177) Which one of the following makes use of RNA as a template to synthesize DNA?
A)
Reverse transcriptase
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B)
DNA dependant RNA polymerase
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C)
DNA polymerase
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D)
RNA polymerase
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question_answer178) In contrast to annelids the platyhelminths show:
A)
radial symmetry
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B)
presence of pseudocoel
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C)
bilateral symmetry
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D)
absence of body cavity
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question_answer179) Which of the following statements regarding enzyme inhibition is correct?
A)
Non-competitive inhibition of an enzyme can he overcome by adding large amount of substrate
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B)
Competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein
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C)
Competitive inhibition is seen when the substrate and the inhibitor compete
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D)
Non-competitive inhibitors often bind to the enzyme irreversibly
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question_answer180) Which of the following pairs is correctly matched?
A)
Cartilaginous joint ? skull bones
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B)
Hinge joint ? between vertebrae
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C)
Fibrous joint ? between phalanges
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D)
Gliding joint ? between zygapophyses of the successive vertebrae
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question_answer181) The catalytic efficiency of two different enzymes can be compared by the:
A)
the Revalue
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B)
the pH optimum value
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C)
formation of the product
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D)
molecular size of the enzyme
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question_answer182) Using imprints from a plate with complete medium and carrying bacterial colonies, you can select streptomycin resistant mutants and prove that such mutations do not originate as adaptation. These imprints need to be used:
A)
only on plates with streptomycin
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B)
on plates with minimal medium
done
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C)
only on plates without streptomycin
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D)
on plates with and without streptomycin
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question_answer183) Which of the following is generally used for induced mutagenesis in crop plants?
A)
Alpha particles
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B)
X-rays
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C)
UV (260 nm)
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D)
Gamma rays (from cobalt 60)
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question_answer184) Haemophilia is more commonly seen in human males than in human females because:
A)
this disease is due to an X-linked dominant mutation
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B)
a greater proportion of girls die in infancy
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C)
this disease is due to an X-linked recessive mutation
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D)
this disease is due to a Y-linked recessive mutation
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question_answer185) A woman with 47 chromosomes due to three copies of chromosome 21 is characterized by:
A)
Down syndrome
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B)
triploidy
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C)
Turner syndrome
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D)
super femaleness
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question_answer186) In order to find out the different types of gametes produced by a pea plant having the genotype AaBb, it should be crossed to a plant with the genotype:
A)
aaBB
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B)
AaBb
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C)
AABB
done
clear
D)
aabb
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question_answer187) Four healthy people in their twenties got involved in injuries resulting in damage and death of a few cells of the following. Which of the cells are least likely to be replaced by new cells?
A)
Osteocytes
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B)
Malpighian layer of the skin
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C)
Liver cells
done
clear
D)
Neurons
done
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question_answer188) Secretin and cholecystokinin are digestive hormones. They are secreted in:
A)
oesophagus
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B)
ileum
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C)
duodenum
done
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D)
pyloric stomach
done
clear
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question_answer189) Which of the following unicellular organism has a macro-nucleus for trophic function and one or more micro-nuclei for reproduction?
A)
Euglena
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B)
Amoeba
done
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C)
Paramecium
done
clear
D)
Trypanosoma
done
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question_answer190) AIDS is caused by HTV that principally infects:
A)
all lymphocytes
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B)
activator B cells
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C)
\[{{T}_{4}}\] lymphocytes
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D)
cytotoxic T cells
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question_answer191) According to widely accepted ?fluid mosaic model? cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements is incorrect?
A)
Proteins in cell membranes can travel within the lipid bilayer
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B)
Proteins can remain confined within certain domains of the membrane
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C)
Proteins can also undergo flip-flop movements in the lipid bilayer
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D)
Many proteins remain completely embedded within the lipid bilayer
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question_answer192) If mammalian ovum fails 10 get fertilized, which one of the following is unlikely?
A)
Corpus luteum will disintegrate
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B)
Estrogen secretion further decreases
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C)
Primary follicle starts developing
done
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D)
Progesterone secretion rapidly declines
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question_answer193) A person is undergoing prolonged fasting. His urine will be found to contain abnormal quantities of:
A)
fats
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B)
ketones
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C)
amino acids
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D)
glucose
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question_answer194) Why is vivipary an undesirable character for annual crop plants?
A)
It reduces the vigour of plant
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B)
The seeds cannot be stored under normal conditions for the next season
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C)
The seeds exhibit long dormancy
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D)
It adversely affects the fertility of the plant
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question_answer195) Bacillus thuringiensis (Bt) strains have been used for designing novel:
A)
bio-metallurgical technique
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B)
bio-mineralization processes
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C)
bio-insecticidal plants
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D)
bio-fertilizers
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question_answer196) The salivary gland chromosomes in the dipteran larvae, are useful in gene mapping because:
A)
these are much longer in size
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B)
these are easy to stain
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C)
these are fused
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D)
they have endoreduplicated chromosomes
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question_answer197) Which group of three of the following five statements (1-5) contain is all three correct statements regarding beri-beri? A. A crippling disease prevalent among the native population of sub-Sahara Africa. B. A deficiency disease caused by lack of thiamine (vitamin \[{{B}_{1}}\]). C.A nutritional disorder in infants and young children when the diet is persistently deficient in essential protein. D. Occurs in those countries where the staple diet is polished rice. E. The symptoms are pain from neuritis, paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure.
A)
A, B and D
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B)
B, C and E
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C)
A, C and E
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D)
B, D and E
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question_answer198) Photosynthetic Active Radiation (PAR) has the following range of wavelengths:
A)
400-700 nm
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B)
450-950 nm
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C)
340-450-nm
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D)
500-600 nm
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question_answer199) Golden rice is a transgenic crop of the future with the following improved trait:
A)
high lysine (essential amino acid) content
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B)
insect resistance
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C)
high protein content
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D)
high vitamin A content
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question_answer200) Which one of the following depresses brain activity and produces feelings of calmness, relaxation and drowsiness?
A)
Valium
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B)
Morphine
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C)
Hashish
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D)
Amphetamines
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