The unit of Stefan's constant\[\sigma \]is
A)
\[W{{m}^{-2}}{{K}^{-1}}\]
done
clear
B)
\[W{{m}^{2}}{{K}^{-4}}\]
done
clear
C)
\[W{{m}^{-2}}{{K}^{-4}}\]
done
clear
D)
\[W{{m}^{-2}}{{K}^{4}}\]
done
clear
View Answer play_arrow
The displacement of a particle is given by \[y=a+bt+c{{t}^{2}}-d{{t}^{4}}.\]The initial velocity and acceleration are respectively
A)
\[b,-4d\]
done
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B)
\[-b,2c\]
done
clear
C)
\[b,2c\]
done
clear
D)
\[2c,-4d\]
done
clear
View Answer play_arrow
A particle [A] is dropped from a height and another particle (B) is thrown into horizontal direction with speed of 5 m/sec from the same height. The correct statement is
A)
Both particles will reach at ground simultaneously
done
clear
B)
Both particles will reach at ground with the same speed
done
clear
C)
Particle [A] will reach at ground first with respect to particle [B]
done
clear
D)
Particle [B] will reach at ground first with respect to particle [A]
done
clear
View Answer play_arrow
A vehicle of mass in is moving on a rough horizontal road with momentum P. If the coefficient of friction between the tyres and the road be\[\mu ,\] then the stopping distance is:
A)
\[\frac{P}{2\,\mu \,mg}\]
done
clear
B)
\[\frac{{{P}^{2}}}{2\,\mu \,mg}\]
done
clear
C)
\[\frac{P}{2\,\mu \,{{m}^{2}}g}\]
done
clear
D)
\[\frac{{{P}^{2}}}{2\,\mu \,{{m}^{2}}g}\]
done
clear
View Answer play_arrow
A force \[(\vec{F})=3\hat{i}+c\hat{j}+2\hat{k}\]acting on a particle causes a displacement: \[(\vec{s})=-4\hat{i}+2\hat{j}+3\hat{k}\]in its own direction. If the work done is 6 J, then the value of 'c' is
A)
0
done
clear
B)
1
done
clear
C)
6
done
clear
D)
12
done
clear
View Answer play_arrow
A constant torque of 1000 N-m turns a wheel of moment of inertia\[200\,kg-{{m}^{2}}\] about an axis through its centre. Its angular velocity after 3 seconds is
A)
1 rad/s
done
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B)
5 rad/s
done
clear
C)
10 rad/s
done
clear
D)
15 rad/s
done
clear
View Answer play_arrow
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
View Answer play_arrow
Potential energy of a satellite having mass m and rotating at a height of \[6.4\times {{10}^{6}}\,m\]from the earth surface is
A)
\[-0.5\,mg{{R}_{e}}\]
done
clear
B)
\[-mg{{R}_{e}}\]
done
clear
C)
\[-2\,mg{{R}_{e}}\]
done
clear
D)
\[4\,mg\,{{R}_{e}}\]
done
clear
View Answer play_arrow
Two satellites of earth, \[{{S}_{1}}\]and \[{{S}_{2}},\]are moving in the same orbit. The mass of \[{{S}_{1}}\] is four times the mass of \[{{S}_{2}}.\]Which one of the following statements is true?
A)
The time period of \[{{S}_{1}}\] is four times that of \[{{S}_{2}}\]
done
clear
B)
The potential energies of earth and satellite in the two cases are equal
done
clear
C)
\[{{S}_{1}}\]and \[{{S}_{2}}\]are moving with the same speed
done
clear
D)
The kinetic energies of the two satellites are equal
done
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View Answer play_arrow
Which one of the following plots represents the variation of gravitational field on a particle with distance r due to a thin spherical shell of radius R? (r is measured from the centre of the spherical shell).
A)
done
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B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
Two droplets merge with each other and forms a large droplet. In this process
A)
Energy is liberated
done
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B)
Energy is absorbed
done
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C)
Neither liberated nor absorbed
done
clear
D)
Some mass is converted into energy
done
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View Answer play_arrow
A certain number of spherical drops of a liquid of radius r coalesce to form a single drop of radius Rand volume V. If T is the surface tension. of the liquid, then
A)
Energy \[=4VT\left( \frac{1}{r}-\frac{1}{R} \right)\]is released
done
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B)
Energy \[=3VT\left( \frac{1}{r}+\frac{1}{R} \right)\] is absorbed
done
clear
C)
Energy \[=3VT\left( \frac{1}{r}-\frac{1}{R} \right)\]is released
done
clear
D)
Energy is neither released nor absorbed
done
clear
View Answer play_arrow
A black body has maximum wavelength\[{{\lambda }_{m}}\]at temperature 2000 K. Its corresponding wave- length at temperature 3000 K will be
A)
\[\frac{3}{2}{{\lambda }_{m}}\]
done
clear
B)
\[\frac{2}{3}{{\lambda }_{m}}\]
done
clear
C)
\[\frac{4}{9}{{\lambda }_{m}}\]
done
clear
D)
\[\frac{9}{4}{{\lambda }_{m}}\]
done
clear
View Answer play_arrow
A steel scale measures the length of a copper wire as 80.0 cm, when both are at \[20{}^\circ C\] (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at \[40{}^\circ C\]? (Given \[{{\alpha }_{steel}}=11\times {{10}^{-6}}\]per \[{{\,}^{o}}C\] and \[{{\alpha }_{copper}}=17\times {{10}^{-6}}\]per\[{{\,}^{o}}C\])
A)
80.0096 cm
done
clear
B)
80.0272 cm
done
clear
C)
1 cm
done
clear
D)
25.2 cm
done
clear
View Answer play_arrow
The temperature of sink of Carnot engine is \[27{}^\circ \], Efficiency of engine is 25%. Then temperature of source is
A)
\[{{227}^{o}}C\]
done
clear
B)
\[{{327}^{o}}C\]
done
clear
C)
\[{{127}^{o}}C\]
done
clear
D)
\[{{27}^{o}}C\]
done
clear
View Answer play_arrow
A thermodynamic system is taken through the cycle ABCD as shown in the figure. Heat rejected by the gas during the cycle is
A)
PV
done
clear
B)
2 PV
done
clear
C)
4 PV
done
clear
D)
\[{\scriptstyle{}^{1}/{}_{2}}PV\]
done
clear
View Answer play_arrow
The amount of heat energy required to raise the temperature of 1 g of Helium at NTP, from \[{{T}_{1}}K\] to \[{{T}_{2}}K\]is
A)
\[\frac{3}{8}{{N}_{a}}{{k}_{B}}({{T}_{2}}-{{T}_{1}})\]
done
clear
B)
\[\frac{3}{2}{{N}_{a}}{{k}_{B}}({{T}_{2}}-{{T}_{1}})\]
done
clear
C)
\[\frac{3}{4}{{N}_{a}}{{k}_{B}}({{T}_{2}}-{{T}_{1}})\]
done
clear
D)
\[\frac{3}{4}{{N}_{a}}{{k}_{B}}\left( \frac{{{T}_{2}}}{{{T}_{1}}} \right)\]
done
clear
View Answer play_arrow
An ideal gas is compressed to half its initial volume by means of several processes. Which of the process results in the maximum work done on the gas?
A)
Isothermal
done
clear
B)
Adiabatic
done
clear
C)
Isobaric
done
clear
D)
Isochoric
done
clear
View Answer play_arrow
A hollow sphere is filled with water through a small hole in it. It is then hung by a long thread and made to oscillate. As the water slowly flows out of the hole at the bottom, the period of oscillation will
A)
continuously decrease
done
clear
B)
continuously increase
done
clear
C)
first decrease and then increase to original value
done
clear
D)
first increase and then decrease to original value
done
clear
View Answer play_arrow
A rectangular block of mass m and area of cross-section A floats in a liquid of density \[\rho .\] If it is given a small vertical displacement from equilibrium it undergoes oscillation with a time period T then:
A)
\[T\propto \sqrt{\rho }\]
done
clear
B)
\[T\propto \frac{1}{\sqrt{A}}\]
done
clear
C)
\[T\propto \frac{1}{\rho }\]
done
clear
D)
\[T\propto \frac{1}{\sqrt{m}}\]
done
clear
View Answer play_arrow
The equation of a wave is represented by \[y={{10}^{-4}}\sin \left[ 100t-\frac{x}{10} \right].\]The velocity of the wave will be
A)
100 m/s
done
clear
B)
250 m/s
done
clear
C)
750 m/s
done
clear
D)
1000 m/s
done
clear
View Answer play_arrow
Two sound waves with wavelengths 5.0 m and 5.5m respectively, each propagates in a gas with velocity 330 m/s. We expect the following. number of beats per second:
A)
12
done
clear
B)
0
done
clear
C)
1
done
clear
D)
6
done
clear
View Answer play_arrow
Sound waves travel at 350 m/s through a warm air and at 3500 m/s through brass. The wave- length of a 700 Hz acoustic wave as it enters brass from warm air
A)
increases by a factor 20
done
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B)
increases by a factor 10
done
clear
C)
decreases by a factor 20
done
clear
D)
decreases by a factor 10
done
clear
View Answer play_arrow
A source of sound S emitting waves of frequency 100 Hz and an observer O are located at some distance from each other. The source is moving with a speed of\[19.4\,m{{s}^{-1}}\]at an angle of \[60{}^\circ \] with the source observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer (velocity of sound in air\[330\,m{{s}^{-1}}\]is
A)
97 Hz
done
clear
B)
100 Hz
done
clear
C)
103 Hz
done
clear
D)
106 Hz
done
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View Answer play_arrow
A charge q is located at the centre of a cube. The electric flux through any face is
A)
\[\frac{4\pi q}{6(4\pi {{\varepsilon }_{0}})}\]
done
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B)
\[\frac{4\pi q}{6(4\pi {{\varepsilon }_{0}})}\]
done
clear
C)
\[\frac{q}{6(4\pi {{\varepsilon }_{0}})}\]
done
clear
D)
\[\frac{2\pi q}{6(4\pi {{\varepsilon }_{0}})}\]
done
clear
View Answer play_arrow
A thin conducting ring of radius R is given a charge +Q. The electric field at the centre O of the ring due the to the charge on the part AKB of the ring is E. The electric field at the centre due to the charge on the part ACDB of the ring is
A)
3E along KO
done
clear
B)
E along OK
done
clear
C)
E along KO
done
clear
D)
3E along OK
done
clear
View Answer play_arrow
Three charges, each + q, are placed at the comers of an isosceles triangle ABC of sides BC and AC, 2a, D and E are the mid-points of BC and CA. The work done in talking a charge Q from D to E is
A)
\[\frac{eqQ}{8\pi \,{{\varepsilon }_{0}}a}\]
done
clear
B)
\[\frac{qQ}{4\pi {{\varepsilon }_{0}}a}\]
done
clear
C)
zero
done
clear
D)
\[\frac{3qQ}{4\pi {{\varepsilon }_{0}}a}\]
done
clear
View Answer play_arrow
The electric field in a certain region is acting radially outward and is given by \[E=Ar.\]A charge contained in a sphere of radius 'a' centred at the origin of the field will be given by
A)
\[4\pi {{\varepsilon }_{0}}A{{a}^{2}}\]
done
clear
B)
\[4{{\varepsilon }_{0}}{{a}^{2}}\]
done
clear
C)
\[4\pi {{\varepsilon }_{0}}A{{a}^{3}}\]
done
clear
D)
\[{{\varepsilon }_{0}}A{{a}^{2}}\]
done
clear
View Answer play_arrow
Two charges \[{{q}_{1}}\]and \[{{q}_{2}}\]are placed 30 cm apart, as shown in the figure. A third charge \[{{q}_{3}}\]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
View Answer play_arrow
Charges +q and -q are placed at points A and B respectively which are a distance 2Z, apart, C is the midpoint between A and B. The work done in moving a charge +Q along the semicircle CRD is
A)
\[\frac{qQ}{4\pi {{\varepsilon }_{0}}L}\]
done
clear
B)
\[\frac{qQ}{2\pi {{\varepsilon }_{0}}L}\]
done
clear
C)
\[\frac{qQ}{6\pi {{\varepsilon }_{0}}L}\]
done
clear
D)
\[\frac{qQ}{6\pi {{\varepsilon }_{0}}L}\]
done
clear
View Answer play_arrow
A series combination of\[{{n}_{1}}\]capacitors, each of value \[{{C}_{1}},\]is charged by a source of potential difference 4 V. When another parallel combination of\[{{n}_{2}}\]capacitors, each of value\[{{C}_{2}}\] is charged by a source of potential difference V, it has the same (total) energy stored in it, as the first combination has. The value of \[{{C}_{2}},\]in terms of \[{{C}_{1}},\]is then
A)
\[\frac{2{{C}_{1}}}{{{n}_{1}}\,{{n}_{2}}}\]
done
clear
B)
\[16\frac{{{n}_{2}}}{{{n}_{1}}}{{C}_{1}}\]
done
clear
C)
\[2\frac{{{n}_{2}}}{{{n}_{1}}}{{C}_{1}}\]
done
clear
D)
\[\frac{16\,{{C}_{1}}}{{{n}_{1}}\,{{n}_{2}}}\]
done
clear
View Answer play_arrow
Two thin dielectric slabs of dielectric constants \[{{K}_{1}}\]and \[{{K}_{2}}(K<{{K}_{2}})\]axe inserted between plates of aparallel plate capacitor, as shown in the figure. The variation of electric field E between the plates with distance d as measured from plate P is correctly shown by
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
In the circuit shown in the figure, the current drawn from the battery is 4A. If\[10\,\Omega .\]resistor is replaced by \[20\,\Omega \]resistor, then current drawn from the circuit will be
A)
1 A
done
clear
B)
2 A
done
clear
C)
3 A
done
clear
D)
0 A
done
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View Answer play_arrow
The potential difference between points A and B is
A)
\[\frac{20}{7}V\]
done
clear
B)
\[\frac{40}{7}V\]
done
clear
C)
\[\frac{10}{7}V\]
done
clear
D)
0
done
clear
View Answer play_arrow
A ring is made of a wire having a resistance \[{{R}_{0}}=12\,\Omega .\]Find the points A and B, as shown in the figure, at which a current carrying conductor should be connected so that the resistance R of the sub-circuit between these points is equal to \[\frac{8}{3}\Omega .\]
A)
\[\frac{{{l}_{1}}}{{{l}_{2}}}=\frac{1}{2}\]
done
clear
B)
\[\frac{{{l}_{1}}}{{{l}_{2}}}=\frac{5}{8}\]
done
clear
C)
\[\frac{{{l}_{1}}}{{{l}_{2}}}=\frac{1}{3}\]
done
clear
D)
\[\frac{{{l}_{1}}}{{{l}_{2}}}=\frac{3}{8}\]
done
clear
View Answer play_arrow
The resistances in the two arms of the meter bridge are\[5\Omega \]and \[R\Omega ,\]respectively. When the resistance R is shunted with an equal resistance, the new balance point is at \[1.6{{l}_{1}}.\] The resistance R is
A)
\[10\,\Omega \]
done
clear
B)
\[15\,\Omega \]
done
clear
C)
\[20\,\Omega \]
done
clear
D)
\[25\,\Omega \]
done
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View Answer play_arrow
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
View Answer play_arrow
A bar magnet of length \[l\] and magnetic dipole moment M is bent in the form of an arc as shown in the figure. The new magnetic dipole moment will be
A)
M
done
clear
B)
\[\frac{3}{\pi }M\]
done
clear
C)
\[\frac{2}{\pi }M\]
done
clear
D)
\[\frac{M}{2}\]
done
clear
View Answer play_arrow
The current \[i\]in a coil varies with time as shown in the figure. The variation of induced emf with time would be
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
The current (I) in the inductance is varying with time according to the plot shown in figure.
Which one of the following is the correct variation of voltage with time in the coil?
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
Which of the following is positively charged?
A)
\[\alpha -\] particle
done
clear
B)
\[\beta -\]particle
done
clear
C)
\[\gamma -\]rays
done
clear
D)
X-rays
done
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View Answer play_arrow
An equi-convex lens is cut into two halves along (i) XOX' and (ii) YOY' as shown in the figure. Let\[f,f',f''\] be the focal lengths of the complete lens, of each half in case (i) and of each half in case (ii), respectively
Choose the correct statement from the following
A)
\[f'=2f,f''=f\]
done
clear
B)
\[f'=f,f''=f\]
done
clear
C)
\[f'=2f,f''=2f\]
done
clear
D)
\[f'=f,f''=2f\]
done
clear
View Answer play_arrow
In the Young's double-slit experiment, the intensity of light at a point on the screen where the path difference is A is\[\lambda \](\[\lambda \]being the wave- length of light used). The intensity at a point where the path difference is \[\frac{\lambda }{4}\] will be
A)
K
done
clear
B)
\[\frac{K}{4}\]
done
clear
C)
\[\frac{K}{2}\]
done
clear
D)
zero
done
clear
View Answer play_arrow
A photoelectric cell is illuminated by a point source of light 1 m away. When the source is shifted to 2 m then
A)
Number of electrons emitted is half the initial number
done
clear
B)
Each emitted electron carries half the initial energy
done
clear
C)
Number of electrons emitted is a quarter of the initial number
done
clear
D)
Each emitted electron carries one quarter of the initial energy
done
clear
View Answer play_arrow
Two particles of masses \[{{m}_{1}},{{m}_{2}}\]move with initial velocities\[{{u}_{1}}\]and\[{{u}_{2}}\]. On collision, one of the particles get excited to higher level, after absorbing energy e. If final velocities of particles be \[{{u}_{1}}\]and \[{{u}_{2}}\]then we must have
A)
\[{{m}_{1}}u_{1}^{2}+{{m}_{2}}u_{2}^{2}-\varepsilon ={{m}_{1}}\upsilon _{1}^{2}+{{m}_{2}}\upsilon _{2}^{2}\]
done
clear
B)
\[\frac{1}{2}{{m}_{1}}u_{1}^{2}+\frac{1}{2}{{m}_{2}}u_{2}^{2}=\frac{1}{2}{{m}_{1}}u_{1}^{2}\]\[+\frac{1}{2}{{m}_{2}}u_{2}^{2}-\varepsilon \]
done
clear
C)
\[\frac{1}{2}{{m}_{1}}u_{1}^{2}+\frac{1}{2}{{m}_{2}}u_{2}^{2}-\varepsilon =\frac{1}{2}{{m}_{1}}u_{1}^{2}\]\[+\frac{1}{2}{{m}_{2}}u_{2}^{2}\]
done
clear
D)
\[\frac{1}{2}m_{1}^{2}u_{1}^{2}+\frac{1}{2}m_{2}^{2}u_{2}^{2}+\varepsilon =\frac{1}{2}m_{1}^{2}u_{1}^{2}\]\[+\frac{1}{2}m_{2}^{2}u_{2}^{2}\]
done
clear
View Answer play_arrow
Specific volume of cylindrical virus particle is \[6.02\times {{10}^{-2}}\,cc/gm\]whose radius and length \[7\overset{\text{ }\!\!\grave{\ }\!\!\text{ o}}{\mathop{\text{A}}}\,\] and \[\text{10}\overset{\text{ }\!\!\grave{\ }\!\!\text{ o}}{\mathop{\text{A}}}\,\] respectively. If \[{{N}_{A}}=6.02\times {{10}^{23}},\]find molecular weight of virus:
A)
\[3.08\times {{10}^{3}}\,kg/mol\]
done
clear
B)
\[15.4\,kg/mol\]
done
clear
C)
\[1.54\times {{10}^{4}}\,kg/mol\]
done
clear
D)
\[3.08\times {{10}^{4}}\,kg/mol\]
done
clear
View Answer play_arrow
\[[Cr{{({{H}_{2}}O)}_{6}}]C{{l}_{3}}\](at no. of Cr = 24) has a magnetic moment of 3.83 B.M. The correct distribution of 3d electrons in the chromium of the complex
A)
\[3d_{xy}^{1},3d_{yz}^{1},3_{xz}^{1}\]
done
clear
B)
\[3_{xy}^{1},3d_{yz}^{1},3d_{{{z}^{2}}}^{1}\]
done
clear
C)
\[(3d_{{{x}^{2}}-{{y}^{2}}}^{1}),3d_{{{z}^{2}}}^{1},3d_{xz}^{1}\]
done
clear
D)
\[3d_{xy}^{1},(3d_{{{x}^{2}}-{{y}^{2}}}^{1}),3d_{yz}^{1}\]
done
clear
View Answer play_arrow
The formation of the oxide ion,\[{{O}^{2-}}(g),\]from oxygen atom requires first an exothermic and then an endothermic step as shown below:
\[O(g)+{{e}^{-}}\xrightarrow{{}}{{O}^{-}}(g);{{\Delta }_{f}}{{H}^{O-}}=-141\,kJ\,mo{{l}^{-}}\] \[{{O}^{-}}(g)+{{e}^{-}}\xrightarrow{{}}{{O}^{2-}}(g);{{\Delta }_{f}}{{H}^{O-}}=+780\,kJ\,mo{{l}^{-}}\] Thus the process of formation of \[{{O}^{2-}}\]in gas phase is neon. It is due to the fact that
A)
Oxygen is more electronegative
done
clear
B)
Addition of electron in oxygen results in larger size of the ion
done
clear
C)
Electron repulsion outweighs the stability gained by achieving noble gas configuration
done
clear
D)
\[{{O}^{-}}\]ion has comparatively smaller size than oxygen atom
done
clear
View Answer play_arrow
Among the following the pair in which the two species are not isostructural is
A)
\[Si{{F}_{4}}\]and \[S{{F}_{4}}\]
done
clear
B)
\[I{{O}^{-}}_{3}\]and\[Xe{{O}_{3}}\]
done
clear
C)
\[B{{H}^{+}}_{4}\]and\[N{{H}^{+}}_{4}\]
done
clear
D)
\[P{{F}^{-}}_{6}\]and \[S{{F}_{6}}\]
done
clear
View Answer play_arrow
A bubble of air is underwater at temperature \[{{15}^{o}}C\] and the pressure 1.5 bar. If the bubble rises to the surface where the temperature is \[{{25}^{o}}C\] and the pressure is 1.0 bar, what will happen to the volume of the bubble?
A)
Volume will become smaller by a factor of 0.70
done
clear
B)
Volume will become greater by a factor of 1.1
done
clear
C)
Volume will become greater by a factor of 1.6
done
clear
D)
Volume will become greater by a factor of 2.5
done
clear
View Answer play_arrow
For which one of the following equations is \[\Delta H_{reaction}^{O}\]equal to\[\Delta H_{f}^{o}\]the product?
A)
\[{{N}_{2}}(g)+{{O}_{3}}(g)\to {{N}_{2}}{{O}_{3}}(g)\]
done
clear
B)
\[C{{H}_{4}}(g)+2C{{l}_{2}}(g)\to C{{H}_{2}}C{{l}_{2}}(l)+2HCl(g)\]
done
clear
C)
\[Xe(g)+2{{i}_{2}}(g)\to Xe{{F}_{4}}(g)\]
done
clear
D)
\[2CO(g)+{{O}_{2}}(g)\to 2C{{O}_{2}}(g)\]
done
clear
View Answer play_arrow
If the value of equilibrium constant for a particular reaction is\[1.6\times {{10}^{12}},\]then at equilibrium the system will contain
A)
mostly products
done
clear
B)
similar amounts of reactants and products
done
clear
C)
all reactants
done
clear
D)
mostly reactants
done
clear
View Answer play_arrow
Solubility of\[M{{X}_{2}}\]type electrolytes is \[0.5\times {{10}^{-4}}\,mol/L,\]then find out\[{{K}_{sp}}\]of electrolytes.
A)
\[5\times {{10}^{-12}}\]
done
clear
B)
\[25\times {{10}^{-10}}\]
done
clear
C)
\[1\times {{10}^{-13}}\]
done
clear
D)
\[5\times {{10}^{-13}}\]
done
clear
View Answer play_arrow
A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number?
A)
Cl
done
clear
B)
C
done
clear
C)
S
done
clear
D)
H
done
clear
View Answer play_arrow
When \[{{H}_{2}}{{O}_{2}}\]is oxidised, the product is
A)
\[O{{H}^{-}}\]
done
clear
B)
\[{{O}_{2}}\]
done
clear
C)
\[{{O}^{2-}}\]
done
clear
D)
\[HO_{2}^{-}\]
done
clear
View Answer play_arrow
Property of the alkaline earth metals that increases with their atomic number
A)
solubility of their hydroxide in water
done
clear
B)
solubility of their sulphates in water
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C)
ionisation energy
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D)
electronegativity
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View Answer play_arrow
The stability of+1 oxidation state among Al, Ga, In and Ti increases in the sequence
A)
Ti < In < Ga < Al
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B)
In < Ti < Ga < Al
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C)
Ga < In < Al < Ti
done
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D)
Al < Ga < In < Ti
done
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View Answer play_arrow
An organic compound containing C, H and N have the percentage 40, 13.33 and 46.67 respectively. Its empirical formula may be:
A)
\[{{C}_{2}}{{H}_{7}}N\]
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B)
\[{{C}_{2}}{{H}_{7}}{{N}_{2}}\]
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C)
\[C{{H}_{4}}N\]
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D)
\[C{{H}_{5}}N\]
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View Answer play_arrow
Structure of the compound whose IUPAC name is 3-ethyl-2-hydroxy-4-methylhex-3-en-5-ynoi acid is
A)
done
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B)
done
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C)
done
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D)
done
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View Answer play_arrow
Geometrical isomers differ in
A)
position of functional groups
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B)
position of atoms
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C)
spatial arrangement of atoms
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D)
length of carbon chain
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View Answer play_arrow
The enolic form of ethyl acetoacetate as shown below has
A)
9 sigma bonds and 2 pi-bonds
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B)
9 sigma bonds and 1 pi-bond
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C)
18 sigma bonds and 2 pi-bonds
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D)
16 sigma bonds and 1 pi-bond
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View Answer play_arrow
In the following reactions,
[a] [b]
A)
done
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B)
and
done
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C)
and
done
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D)
and
done
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View Answer play_arrow
The oxidation of benzene by\[{{V}_{2}}{{O}_{5}}\] in the presence of air produces
A)
benzoic acid
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B)
benzaldehyde
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C)
benzoic anhydride
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D)
maleic anhydride
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View Answer play_arrow
Which one of the following statement is not true?
A)
pH of drinking water should be between 5.5 and 9.5.
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B)
Concentration of DO below 6 ppm is good for the growth of fish.
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C)
Clean water would have a BOD value of less than 5 ppm.
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D)
Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant.
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View Answer play_arrow
If species \[_{a}^{b}X\]first emits a position, then two a and two\[\beta \]and in last one a and finally converted to species \[_{c}^{d}Y,\]so the correct relation is
A)
\[c=a-5,d=b-12\]
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B)
\[c=a-6,d=b-8\]
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C)
\[c=a-4,d=b-12\]
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D)
\[c=a-5,d=b-8\]
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View Answer play_arrow
With which one of the following element silicon should be doped so as to give p-type semiconductor?
A)
As
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B)
Se
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C)
B
done
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D)
Ge
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View Answer play_arrow
The vacant space in bcc lattice unit cell is:
A)
23%
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B)
32%
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C)
26%
done
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D)
48%
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View Answer play_arrow
During osmosis, flow of water through a semi- permeable membrane is
A)
from both sides of semipermeable membrane with unequal flow rates
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B)
from solution having lower concentration only
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C)
from solution having higher concentration only
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D)
from both sides of semipermeable membrane with equal flow rates
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View Answer play_arrow
The boiling point of \[0.2\,mol\,k{{g}^{-1}}\] solution of X in water is greater than equimolal solution of Y in water. Which one of the following statements is true in the case?
A)
Molecular mass of X is less than the molecular mass of Y.
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B)
Y is undergoing dissociation in water while X undergoes no change.
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C)
X is undergoing dissociation in water.
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D)
Molecular mass of X is-greater than the molecular mass of Y.
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View Answer play_arrow
The emf of a Daniel cell at 298 K is \[{{E}_{1}}\]\[\underset{(0.01\,M)}{\mathop{Zn|ZnS{{O}_{4}}|}}\,\underset{(1.0\,M)}{\mathop{|CuS{{O}_{4}}|Cu}}\,\] when the concentration of\[ZnS{{O}_{4}}\]is 1.0 M and that of \[CuS{{O}_{4}}\] is 0.01 M, the emf changed to \[{{E}_{2}}.\]What is the relationship between \[{{E}_{1}}\]and\[{{E}_{2}}\]
A)
\[{{E}_{2}}=0\ne {{E}_{1}}\]
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B)
\[{{E}_{1}}>{{E}_{2}}\]
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C)
\[{{E}_{1}}<{{E}_{2}}\]
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D)
\[{{E}_{1}}={{E}_{2}}\]
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View Answer play_arrow
Kohlrausch's law states that at:
A)
Infinite dilution, each ion makes definite contribution to equivalent conductance of an electrolyte depending on the nature of the other ion of the electrolyte
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B)
Infinite dilution, each ion makes definite contribution to conductance of an electrolyte whatever be the nature of the other ion of the electrolyte
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C)
Infinite dilution, each ion makes definite contribution to equivalent conductance of an electrolyte, whatever be the nature of the other ion of the electrolyte
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D)
Finite dilution, each ion makes definite contribution to equivalent conductance of an electrolyte, whatever be the nature of the other ion electrolyte
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View Answer play_arrow
When \[\,0.1\,mol\,MnO_{4}^{2-}\]is oxidised the quantity of electricity required to completely oxidise\[MnO_{4}^{2-}\]to\[MnO_{4}^{-}\]is
A)
96500C
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B)
\[2\times 96500\,C\]
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C)
9650 C
done
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D)
96.50 C
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View Answer play_arrow
\[2A\to B+C.\]It would be a zero-order reaction when
A)
the rate of reaction is proportional to square of cone. of A
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B)
the rate of reaction remains same at any cone. of A
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C)
the rate remains unchanged at any cone. of B and C
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D)
the rate of reaction doubles if cone. of B is increased to double.
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View Answer play_arrow
In the reaction.\[Br{{O}^{-}}_{3}(aq)+5B{{r}^{-}}(aq)+6{{H}^{+}}\to 3B{{r}_{2}}(l)+3{{H}_{2}}O(l)\] The rate of appearance of bromine \[(B{{r}_{2}})\]Is related to rate of disappearance .of bromide ions as following:
A)
\[\frac{d(B{{r}_{2}})}{dt}=\frac{3}{5}\frac{d(B{{r}^{-}})}{dt}\]
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B)
\[\frac{d(B{{r}_{2}})}{dt}=-\frac{3}{5}\frac{d(B{{r}^{-}})}{dt}\]
done
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C)
\[\frac{d(B{{r}_{2}})}{dt}=-\frac{5}{3}\frac{d(B{{r}^{-}})}{dt}\]
done
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D)
\[\frac{d(B{{r}_{2}})}{dt}=\frac{5}{3}\frac{d(B{{r}^{-}})}{dt}\]
done
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View Answer play_arrow
The Langmuir adsorption isotherm is deduced using the assumption:
A)
The adsorption sites are equivalent in their ability to adsorb the particles
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B)
The heat of adsorption varies with coverage
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C)
The adsorbed molecules interact with each other
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D)
The adsorption takes place in multilayers
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View Answer play_arrow
"Metals are usually not found as nitrates in their ores." Out of the following two (I and II) reasons which is/are true for the above observation?
I. Metal nitrates are highly unstable. II. Metal nitrates are highly soluble in water.
A)
I is false but II is true
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B)
I is true but II is false.
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C)
I and II are true
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D)
I and II are false
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View Answer play_arrow
Strong reducing behaviour of\[{{H}_{3}}P{{O}_{2}}\]is due to:
A)
High oxidation state of phosphorus
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B)
Presence of two -OH groups and one P-H bond
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C)
Presence of one -OH group and two P-H bonds
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D)
High electron gain enthalpy of phosphorus
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View Answer play_arrow
Which one is responsible for depletion of ozone layer in the upper strata of the atmosphere?
A)
Polyhalogens
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B)
Ferrocene
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C)
Fullerenes
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D)
Freons
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View Answer play_arrow
A salt, which on heating with cone.\[{{H}_{2}}S{{O}_{4}}\]gives violet vapours, is
A)
Iodide
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B)
Nitrate
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C)
Sulphate
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D)
Bromide
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Which of the following gases exists more abundantly in nature than the others?
A)
Helium
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B)
Neon
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C)
Argon
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D)
Krypton
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View Answer play_arrow
Gadolinium belong to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium?
A)
\[[Xe]4{{f}^{7}}5{{d}^{1}}6{{s}^{2}}\]
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B)
\[[Xe]4{{f}^{6}}5{{d}^{2}}6{{s}^{2}}\]
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C)
\[[Xe]4{{f}^{8}}5{{d}^{2}}\]
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D)
\[[Xe]4{{f}^{9}}6{{s}^{1}}\]
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View Answer play_arrow
Which is considered to be an anticancer species?
A)
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B)
done
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C)
done
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D)
done
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View Answer play_arrow
Which of the following reaction(s) can be used for the preparation of alkyl halides?
(i)\[C{{H}_{3}}C{{H}_{2}}OH+HCl\xrightarrow{anh.ZnC{{l}_{2}}}\] (ii)\[C{{H}_{3}}C{{H}_{2}}OH+HCl\xrightarrow{{}}\] (iii)\[{{(C{{H}_{3}})}_{3}}COH+HCl\xrightarrow{{}}\] (iv)\[{{(C{{H}_{3}})}_{2}}CHOH+HCl\xrightarrow{anh.ZnC{{l}_{2}}}\]
A)
(IV) only
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B)
(III) and (IV) only
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C)
(I), and (IV) only
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D)
(I) and (II) only
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View Answer play_arrow
\[HO{{H}_{2}}C.C{{H}_{2}}OH\]on heating with periodic acid gives
A)
done
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B)
\[2C{{O}_{2}}\]
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C)
2 HCOOH
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D)
done
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View Answer play_arrow
Treatment of cyclopentanone with
methyl lithium gives which of the following species?
A)
Cyclopentanonyl radical
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B)
Cyclopentanonyl biradical
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C)
Cyclopentanonyl anion
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D)
Cyclopentanonyl cation
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View Answer play_arrow
Which one of the following esters gets hydro- lysed most easily under alkaline conditions?
A)
done
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B)
done
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C)
done
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D)
done
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View Answer play_arrow
The hormone that helps in conversion of glucose to glycogen is:
A)
cortisone
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B)
bile salt
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C)
adrenaline
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D)
insulin
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Caprolactam is used for the manufacture of:
A)
Trylene
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B)
Nylon-6, 6
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C)
Bylon-6
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D)
Teflon
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View Answer play_arrow
Aspirin is an acetylation product of
A)
\[m-\]ydroxybenzoic acid
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B)
o-hydroxybenzoic acid
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C)
\[p-\]dihydroxybenzene
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D)
o-dihydroxybenzene
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View Answer play_arrow
If we use phenolphthalein as an indicator in a titration of \[N{{a}_{2}}C{{O}_{3}}\]with HCl, the usual result is
A)
No visible change will occur
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B)
The indicator reacts with the acid
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C)
The indicator reacts with the base
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D)
Sodium chloride and carbonic acid will be formed
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View Answer play_arrow
Which of the following is less general in characters as compared to genus?
A)
Species
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B)
Division
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C)
Class
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D)
Family
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Which fungal disease spreads by seed and flowers?
A)
Loose smut of Wheat
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B)
Corn stunt
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C)
Covered smut of Barley
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D)
Soft rot of Potato
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View Answer play_arrow
Which one of the following is living fossil?
A)
Moss
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B)
Saccharomyces
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C)
spirogyra
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D)
Cycas
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Sycon belongs to a group of animals, which are best described as:
A)
Unicellular or acellular
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B)
Multicellular without any tissue organization
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C)
Multicellular with a gastrovascular system
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D)
Multicellular having tissue organization, but no body cavity
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View Answer play_arrow
Which of the following is a correct pair?
A)
Cuscuta - parasite
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B)
Dischidia - insectivorous
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C)
Opuntia - predator
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D)
Capsella - hydrophyte
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Which one of the following contains the largest quantity of extracellular material?
A)
Striated muscle
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B)
Aerolar tissue
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C)
Stratified epithelium
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D)
Myelinated nerve fibres
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View Answer play_arrow
Earthworms have no skeleton but during bur- rowing the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to:
A)
gut peristalsis
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B)
setae
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C)
coelomic fluid
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D)
blood
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The kind of epithelium which forms the inner walls of blood vessels is:
A)
Cuboidal epithelium
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B)
Columnar epithelium
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C)
Ciliated columnar epithelium
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D)
Squamous epithelium
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View Answer play_arrow
Choose the correctly matched pair:
A)
Inner lining of salivary ducts-Ciliated epithelium
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B)
Moist surface of buccal cavity-Glandular epithelium
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C)
Tubular parts of nephrons-Cuboidal epithelium
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D)
Inner surface of bronchioles-Squamous epithelium
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Which of the following characteristics is mainly responsible for diversification of insects on land?
A)
Eyes
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B)
Segmentation
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C)
Bilateral symmetry
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D)
Exoskeleton
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View Answer play_arrow
Mitotic spindle is mainly composed of which protein:
A)
Actin
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B)
Tubulin
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C)
Actomyosin
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D)
Myoglobin
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View Answer play_arrow
A student wishes to study the cell structure under a light microscope having \[10\times \]eyepiece and \[45\times \]objective. He should illuminate the object by which one of the following colours of light so as to get the best possible resolution:
A)
Red
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B)
Green
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C)
Yellow
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D)
Blue
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View Answer play_arrow
Which of the following statements regarding mitochondrial membrane is not correct?
A)
The outer membrane is permeable to all kinds of molecules
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B)
The enzymes of the electron transfer chain are embedded in the outer membrane
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C)
The inner membrane is highly convoluted forming a series of infoldings
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D)
The outer membrane resembles a sieve.
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View Answer play_arrow
What are those structures that appear as 'beads- on-string' in the chromosomes when viewed under electron microscope?
A)
Genes
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B)
Nucleotides
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C)
Nucleosomes
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D)
Base pairs
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Which one of the following organelle in the figure correctly matches with its function?
A)
Rough endoplasmic reticulum, formation of glycoproteins
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B)
Golgi apparatus, protein synthesis
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C)
Golgi apparatus, formation ofglycolipids
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D)
Rough endoplasmic reticulum, protein synthesis
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Match the columns and identify the correct option:
Column-I Column-II [a] Thylakoids (i) Disc-shaped sacs in Golgi apparatus [b] Cristae (i.i) Condensed structure of DNA [c] Cistemae (lii) Flat membranous sacs in stroma [d] Chromatin (IV) Infoldings in mitochondria
A)
[a] [b] [c] [d] (iii) (iv) (ii) (i)
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B)
[a] [b] [c] [d] (iv) (iii) (i) (ii)
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C)
[a] [b] [c] [d] (iii) (iv) (i) (ii)
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D)
[a] [b] [c] [d] (iii) (i) (iv) (ii)
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View Answer play_arrow
Types of RNA polymerase required in nucleus for RNA synthesis are:
A)
1
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B)
2
done
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C)
3
done
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D)
4
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View Answer play_arrow
Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these:
A)
Are exclusively synthesized in the body of a living organism as at present
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B)
enhance oxidative metabolism
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C)
Are conjugated proteins
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D)
Help in regulating metabolism
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View Answer play_arrow
The curve given below shows enzymatic activity with relation to three conditions (pH, temperature and substrate concentration). What do the two axis (\[x\]and y) represent?
A)
\[x-\]axis y-axis enzymatic activity Temperature
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B)
\[x-\]axis y-axis enzymatic activity pH
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C)
\[x-\]axis y-axis Temperature enzyme activity
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D)
\[x-\]axis y-axis substrate concentration enzymatic activity
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View Answer play_arrow
Macro molecule chitin is:
A)
nitrogen containing polysaccharide
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B)
phosphorus containing polysaccharide
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C)
sulphur containing polysaccharide
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D)
simple polysaccharide
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View Answer play_arrow
The chitinous exoskeleton of arthropods is formed by the polymerisation of:
A)
lipoglycans
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B)
keratin sulphate and chondroitin sulphate
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C)
D-glucosamine
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D)
N-acetyl glucosamine
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View Answer play_arrow
Which stages of cell division do the following figures A and B represent respectively?
A)
Metaphase - Telophase
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B)
Telophase - Metaphase
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C)
Late Anaphase - Prophase
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D)
Prophase-Anaphase
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View Answer play_arrow
Select the correct option:
I II [a] Synapsis aligns homologous chromosomes (i) AnaphaseII [b] Synthesis ofRNA and protein (ii) Zygotene [c] Action of enzyme recombinase (iii) \[{{G}_{2}}\] phase [d] Centromeres do not separate but chromatids move towards opposite poles (iv) Anaphase I (v) Pachytene
A)
[a] [b] [c] [d] (ii) (iii) (iv) (v)
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B)
[a] [b] [c] [d] (ii) (i) (iii) (iv)
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C)
[a] [b] [c] [d] (ii) (iii) (v) (iv)
done
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D)
[a] [b] [c] [d] (i) (ii) (v) (iv)
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View Answer play_arrow
In which of the following plant sunken stomata, are found:
A)
Nerium
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B)
Hydrilla
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C)
Mango
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D)
Guava
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Carbohydrates are commonly found as starch in plant storage organs. Which of the following five (a-e) properties of starch make it useful as a storage material?
[a] Easily translocated [b] Chemically non-reactive [c] Easily digested by animals [d] Osmotically inactive [e] Synthesized during photosynthesis
A)
[a], (3) and (5)
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B)
[a] and (5)
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C)
[b] and (3)
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D)
[b] and (4)
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View Answer play_arrow
Choose the correct match Bladderwort, sundew Venus flytrap:
A)
Nepanthes, Dionaea, Drosera
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B)
Nepanthes, Utricularia, Vanda
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C)
Utricularia, Drosera, Dionaea
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D)
Dionaea, Trapa, Vanda
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View Answer play_arrow
Which one of the following elements is not an essential micronutrient for plant growth?
A)
Ca
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B)
Mn
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C)
Zn
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D)
Cu
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View Answer play_arrow
Which one gives the most valid and recent explanation for stomatal movements?
A)
Guard cell photosynthesis
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B)
Transpiration
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C)
Potassium influx and efflux
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D)
Starch hydrolysis
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View Answer play_arrow
Cytochrome is:
A)
Metallo flavoprotein
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B)
Fe containing porphyrin pigment
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C)
Glycoprotein
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D)
Lipid
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View Answer play_arrow
In \[{{C}_{3}}\] plants, the first stable product of photo- synthesis during the dark reaction is:
A)
Oxaloacetic acid
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B)
3-phosphoglyceric acid
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C)
Phosphoglyceraldehyde
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D)
Malic acid
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View Answer play_arrow
The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is:
A)
Quinone
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B)
Cytochrome
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C)
Iron-sulphur protein
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D)
Ferredoxin
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View Answer play_arrow
The oxygen evolved during photosynthesis comes from water molecules. Which one of the following pairs of elements is involved in this reaction?
A)
Magnesium and Chlorine
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B)
Manganese and Chlorine
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C)
Manganese and Potassium
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D)
Magnesium and Molybdenum
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View Answer play_arrow
Which one of the following concerns photo- phosphorylation?
A)
\[ADP+AMO\xrightarrow{Light\,energy}ATP\]
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B)
\[ADP+Inorganic\,P{{O}_{4}}\xrightarrow{Light\,energy}ATP\]
done
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C)
\[ADP+Inorganic\,P{{O}_{4}}\xrightarrow{{}}ATP\]
done
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D)
\[AMP+Inorganic\,P{{O}_{4}}\xrightarrow{Light\,energy}ATP\]
done
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View Answer play_arrow
Aerobic respiratory pathway is appropriately termed:
A)
Anabolic
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B)
Catabolic
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C)
Parabolic
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D)
Amphibolic
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View Answer play_arrow
Glycolate induces opening of stomata in:
A)
Presence of oxygen
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B)
Low \[C{{O}_{2}}\]cone.
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C)
High\[C{{O}_{2}}\]
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D)
\[C{{O}_{2}}\]absent
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View Answer play_arrow
Senescence as an active developmental cellular process in the growth and functioning of a flowering plant is indicated in:
A)
Annual plants
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B)
Floral parts
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C)
Vessels and tracheid differentiation
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D)
Leaf abscission
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View Answer play_arrow
Auxin can be bioassayed by:
A)
Lettuce hypocotyl elongation
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B)
Avena coleoptile curvature
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C)
Hydroponics
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D)
Potometer
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View Answer play_arrow
Stool of a person contains whitish grey colour due to malfunction of which type of organ:
A)
Pancreas
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B)
Spleen
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C)
Kidney
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D)
Liver
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View Answer play_arrow
In which group of three of the following five statements (a-e) contains all the three correct statements regarding beriberi:
[a] A crippling disease prevalent among the native population of sub-Saharan Africa [b] A deficiency disease caused by lack of thiamine (vitamin B1) [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)
[b], [c] and [e]
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B)
[a], [b] and [d]
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C)
[b], [d] and [e]
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D)
[a], [c] and [e]
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Which one of the following pairs of food com- pounds in humans reaches the stomach totally undigested?
A)
Starch and cellulose
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B)
Protein and starch
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C)
Starch and fat
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D)
Fat and cellulose
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Which of the following statements is not correct?
A)
Acini are present in the pancreas and secrete carboxypeptidase
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B)
Brunner's glands are present in the submucosa of stomach and secrete pepsinogen
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C)
Goblet cells are present in the mucosa of intestine and secrete mucus
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D)
Oxyntic cells are present in the mucosa of stomach and secrete HCl.
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When \[C{{O}_{2}}\]concentration in blood increases, breathing becomes
A)
There is no effect on breathing
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B)
Slow and deep
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C)
Faster and deeper
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D)
Shallower and slow
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The figure given below shows a small part of human lung where exchange of gases takes place. In which one of the options given below, the one part A, B, C or D is correctly identified along with its function.
A)
B: red blood cell-transport of \[C{{O}_{2}}\]mainly
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B)
C: arterial capillary - passes oxygen to tissues
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C)
A: alveolar cavity - main site of exchange of respiratory gases
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D)
D: Capillary wall - exchange of \[{{O}_{2}}\] and \[C{{O}_{2}}\]takes place here
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Impulse of heart beat originates from:
A)
S. A. Node
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B)
A. V. Node
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C)
Vagus Nerve
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D)
Cardiac Nerve
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Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin?
A)
Eosinophils
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B)
Monocytes
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C)
Neutrophils
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D)
Basophils
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Which two of the following changes (a - d) usually tend to occur in the plain dwellers when they move to high altitudes (3,500 m or more)?
[a] Increase in red blood cell size [b] Increase in red blood cell production [c] Increased breathing rate [d] Increase in thrombocyte count
Changes occurring are:
A)
[b] and [c]
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B)
[c] and [d]
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C)
[a] and [d]
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D)
[a] and [b]
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How do parasympathetic neural signals affect the working of the heart?
A)
Reduce both heart rate and cardiac output
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B)
Heart rate is increased without affecting the cardiac output.
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C)
Both heart rate and cardiac output increase
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D)
Heart rate decreases but cardiac output increases.
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A terrestrial animal must be able to:
A)
Conserve water
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B)
Actively pump salts out through the skin
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C)
Excrete large amounts of salts in urine
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D)
Excrete large amounts of water in urine
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A person who is on a long hunger strike and is surviving only on water will have:
A)
Less urea in his urine
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B)
More sodium in his urine
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C)
Less amino acids in his urine
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D)
More glucose in his blood
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Which one of the following statements is correct with respect to kidney function regulation?
A)
During summer when body loses of lot of water by evaporation, the release of ADH is suppressed
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B)
When someone drinks lot of water, ADH release is suppressed
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C)
Exposure to cold temperature stimulates ADH release
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D)
An increase in glomerular blood flow stimulates formation of Angiotensin II.
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Which of the following does not favour the formation of large quantities of dilute urine?
A)
Atrial-natriuretic factor
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B)
Alcohol
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C)
Caffeine
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D)
Renin
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What is sarcomere?
A)
Part between two H-lines
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B)
Part between two A-lines
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C)
Part between two I-bands
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D)
Part between two Z-lines
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Select the correct statement with respect to locomotion in humans:
A)
A decreased level of progesterone causes osteoporosis in old people.
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B)
Accumulation of uric acid crystals in joints causes their inflammation.
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C)
The vertebral column has 10 thoracic vertebrae.
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D)
The joint between adjacent vertebrae is a fibrous joint.
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When we migrate from dark to light, we fail 10 see for sometimes but after a time visibility becomes normal. It is an example of
A)
Accommodation
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B)
Adaptation
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C)
Mutation
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D)
Photoperiodism
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Given below is a diagrammatic cross section of a single loop of human cochlea:
Which one of the following options correctly represents the names of three different parts?
A)
D: Sensory hair cells.
A: Endolymph, B: Tectorial membrane
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B)
A: Perilymph, B: Tectorial membrane, C: Endolymph
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C)
B: Tectorial membrane, C: Perilymph, D: Secretory cells
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D)
C: Endolymph, D: Sensory hair cells, A: Serum
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Parts A, B, C and D of the human eye are shown in the diagram. Select the option which gives correct identification along with its functions/ characteristics:
A)
A-Retina - contains photo receptors-rods and cones
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B)
B-Blind spot - has only a few rods and cones
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C)
C-Aqueous chamber - reflects the light which does not pass through the lens
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D)
D-choroid - its anterior part forms ciliary body
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Acromegaly is caused by:
A)
Excess of STH
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B)
Excess of thyroxin
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C)
Deficiency of thyroxin
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D)
Excess of adrenalin
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Which one of the following hormones is a modified amino acid?
A)
Progesterone
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B)
Prostaglandin
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C)
Estrogen
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D)
Epinephrine
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Match the source gland with its respective hormone as well as the function.
A)
Source gland Hormone Function Thyroid Thyroxine Regulates blood calcium level
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B)
Source gland Hormone Function Anterior pituitary Oxytocin Contraction of uterus muscles during child birth
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C)
Source gland Hormone Function Posterior pituitary Vasopressin Stimulates resorption of water in the distal tubules in the nephron
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D)
Source gland Hormone Function Corpus luteum Estrogen Supports Pregnancy
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Which of the following events is not associated with ovulation in human female?
A)
LH surge
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B)
Decrease in estradiol
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C)
Full development of Graafian follicle
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D)
Release of secondary oocyte
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Vegetative propagation in mint occurs by:
A)
Sucker
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B)
Runner
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C)
Offset
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D)
Rhizome
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In oogamy fertilization involves:
A)
A large non-motile female gamete and a small motile male gamete
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B)
A large non-motile female gamete and a small non-motile male gamete
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C)
A large motile female gamete and a small non-motile male gamete
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D)
A small non-motile female gamete and a large motile male gamete
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What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?
A)
16
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B)
24
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C)
32
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D)
8
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The scutellum observed in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons?
A)
Cotyledon
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B)
Endosperm
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C)
Aleurone layer
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D)
Plumule
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Both autogamy and geitonogamy are prevented in:
A)
Castor
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B)
Maize
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C)
Papaya
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D)
Cucumber
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Which one of the following statements in not true?
A)
Honey is made by bees by digesting pollen collected from flowers
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B)
Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups
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C)
Pollen grains of some plants cause severe allergies and bronchial afflictions in some people
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D)
The flowers pollinated by flies and bats secrete foul odour to attract them
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In angiosperms, microsporogenesis and megasporogenesis :
A)
occur in ovule
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B)
occur in anther
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C)
form gametes without furthers divisions
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D)
involve meiosis
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Sertoli cells are regulated by the pituitary hormone known as:
A)
FSH
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B)
GH
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C)
Prolactin
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D)
LH
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Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female?
A)
Retention of well-developed corpus luteum
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B)
Fertilization of the ovum
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C)
Maintenance of the hypertrophical endo- metrial lining
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D)
Maintenance of high concentration of sex hormones in the blood stream
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The permissible use of the technique amniocentesis is for:
A)
detecting sex of the unborn foetus
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B)
artificial insemination
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C)
transfer of embryo into the uterus of a surrogate mother
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D)
Detecting any genetic abnormality
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In a normal pregnant woman, the amount of total gonadotropin activity was assessed. The results expected was:
A)
High levels of FSH and LH in uterus to stimulate endometrial thickening
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B)
High level of circulating HCG to stimulate estrogen and progesterone synthesis
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C)
High level of circulating FSH and LH in the uterus to stimulate implantation of the embryo
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D)
High level of circulating HCG to stimulate endometrial thickening
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In human females, meiosis II is not completed until?
A)
birth
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B)
puberty
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C)
fertilization
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D)
uterine implantation
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Given below are four methods (A-D) and their modes of action (1-4) in achieving contraception. Select their correct matching from the four options that follow:
Method Mode of Action 1. The pill [a] Prevents sperms reaching cervix 2. Condom [b] Prevents implantation 3. Vasectomy [c] Prevents ovulation 4. Copper-T [d] Semen contains no sperms
A)
1 = [c], 2 = [d], 3 = [a], 4 = [b]
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B)
1 = [b], 2 = [c], 3 = [a], 4 = [d]
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C)
1 = [c], 2 = [a], 3 = [d], 4 = [b]
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D)
1 = [d], 2 = [a], 3 = [b], 4 = [c]
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Hysterectomy is surgical removal of:
A)
Mammary glands
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B)
Uterus
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C)
Prostate gland
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D)
Vas deference
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Probability of four son to a couple is:
A)
1/4
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B)
1/8
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C)
1/16
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D)
1/32
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A diseased man marries a normal woman. They get three daughter and five sons. All the daughters were diseased and sons were normal. The gene of this disease is:
A)
Sex-linked dominant
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B)
Sex-linked recessive
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C)
Sex-limited character
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D)
Autosomal dominant
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One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of \[{{F}_{2}}\]progenies that mutation is found in:
A)
None of the progenies
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B)
All the progenies
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C)
50% of the progenies
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D)
1/3 of the progenies
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In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the\[{{F}_{2}}\]generation of the cross\[\text{RRYY }\!\!\times\!\!\text{ rryy}\]?
A)
Only round seeds with green cotyledons
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B)
Only wrinkled seeds with yellow cotyledons
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C)
Only wrinkled seeds with green cotyledons
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D)
Round seeds with yellow cotyledons, and wrinkled seeds with yellow cotyledons
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The two polynucleotide chains in DNA are:
A)
Semiconservative
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B)
Parallel
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C)
Discontinuous
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D)
Antiparallel
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Which one of the following symbols and its representation used in human pedigree analysis is correct?
A)
mating between relatives
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B)
unaffected male
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C)
unaffected female
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D)
male affected
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The following ratio is generally constant for a given species:
A)
T+C/G+A
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B)
G+C/A+T
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C)
A+C/T+G
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D)
A+G/C+T
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One gene-one enzyme hypothesis was postulated by
A)
R. Franklin
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B)
Hershey and Chase
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C)
A. Garrod
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D)
Beadle and Tatum
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Whose experiments cracked the DNA and dis- covered unequivocally that a genetic code is a "triplet"?
A)
Beadle and Tatum
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B)
Nirenberg and Mathaei
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C)
Hershey and Chase
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D)
Morgan and Sturtevant
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The diagram shows an important concept in the genetic implication of DNA. Fill in the blanks A to C. \[DNA\xrightarrow{A}mRNA\xrightarrow{B}protein\xrightarrow[C]{\Pr oposed\,by}\]
A)
A-transcription B-replication C-James Watson
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B)
A-translation B-transcription C-Erevin Chargaff
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C)
A-transcription B-translation C-Francis Crick
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D)
A-translation B-extension C-Rosalind Franklin
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The introduction of t -DNA into plants involves:
A)
Allowing the plant roots to stand in water
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B)
Infection of the plant by Agrobacterium tumefaciens
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C)
Altering the pH of the soil, then heat shocking the plants
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D)
Exposing the plants to cold for a brief period
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Which one of the following options gives one correct example each of convergent evolution and divergent evolution?
A)
Convergent evolution Divergent evolution Bones of forelimbs of vertebrates Wings of butterfly and birds
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B)
Convergent evolution Divergent evolution Thorns of Bougainvillia and tendrils of Cucurbita Eyes of octopus and mammals
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C)
Convergent evolution Divergent evolution Eyes of octopus and mammals Bones of forelimpbs of vertebrates
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D)
Convergent evolution Divergent evolution Thorns of Bougainvillia and ten drils of Cucurbita Wings of butterflies and birds
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LSD is:
A)
hallucinogenic
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B)
sedative
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C)
stimulant
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D)
tranquiliser
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To obtain virus-free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken?
A)
Apical meristem only
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B)
Palisade parenchyma
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C)
Both apical and axillary meristems
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D)
Epidermis only
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Match the following list of microbes and their importance:
[a] [b] Saccharomyces cerevisiae Production of immuno- suppressive agents Monascus pufpiireiis Ripening of Swiss cheese Trichoderma polysporum Commerical production ofethanol Propiombacterium shannanii Production of blood cho- lesterol lowering agents
A)
[a] [b] [c] [d] (iii) (i) (iv) (ii)
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B)
[a] [b] [c] [d] (iii) (iv) (i) (ii)
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C)
[a] [b] [c] [d] (iv) (iii) (ii) (i)
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D)
[a] [b] [c] [d] (iv) (ii) (i) (iii)
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Golden rice is a genetically modified crop plant where the incorporated gene is meant for bio- synthesis of:
A)
Vitamin A
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B)
Vitamin B
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C)
Vitamin C
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D)
Omega 3
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