A steam boat goes across a lake and comes -k [a] On a quiet day when the water is still and [b] On a rough day when there is uniform air current so as to help the journey onward and to impede the journey back. If the speed of the launch on both days was same, in which case it will complete the journey in lesser time?
A)
Case [a]
done
clear
B)
Case [b]
done
clear
C)
Same in both
done
clear
D)
Nothing can be predicted
done
clear
View Answer play_arrow
The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate. If the maximum error in the measurement of force and length are respectively 4% and 2%, The maximum error in the measurement ofpressure.is
A)
\[1%\]
done
clear
B)
\[2\,%\]
done
clear
C)
\[6\,%\]
done
clear
D)
\[8\,%\]
done
clear
View Answer play_arrow
A car A is travelling on a straight level road with a uniform speed of 60 km/h. It is followed by another car B which is moving with a speed of 70 km/h. When the distance between them is 2.5 km, the car B is given a deceleration of\[20\text{ }km/{{h}^{2}}\]. After how much time will B catch up with A.
A)
1 hr
done
clear
B)
1/2 hr
done
clear
C)
1/4 hr
done
clear
D)
1/8 hr
done
clear
View Answer play_arrow
A stone is projected from the ground with velocity 50 m/sec at an angle of\[30{}^\circ \]. It crosses a wall after 3 sec. How far beyond the wall the stone will strike the ground\[(g =10 m/se{{c}^{2}})\].
A)
90.2 m
done
clear
B)
89.6 m
done
clear
C)
86.6 m
done
clear
D)
70.2 m
done
clear
View Answer play_arrow
The masses of 10 kg and 20 kg respectively are connected by a massless spring as shown 3 in figure. A force of 200 N acts on the 20 kg mass. At the instant shown, the 10 kg mass has acceleration\[12\text{ }m/se{{c}^{2}}\]. What is the acceleration of 20 kg mass?
A)
\[12\text{ }m/se{{c}^{2}}\]
done
clear
B)
\[4\text{ }m/se{{c}^{2}}\]
done
clear
C)
\[10\text{ }m/se{{c}^{2}}\]
done
clear
D)
Zero
done
clear
View Answer play_arrow
A rough vertical board has an acceleration 'a' so that a 2 kg block pressing against it does not fall. The coefficient of friction between the block and the board should be
A)
> g/a
done
clear
B)
< g/a
done
clear
C)
= g/a
done
clear
D)
> a/g
done
clear
View Answer play_arrow
A bomb of mass 3m kg explodes into two pieces of mass m kg and 2m kg. If the velocity of m kg mass is 16 m/sec, the total kinetic energy released in the explosion is
A)
192 mJ
done
clear
B)
96 mJ
done
clear
C)
384 mJ
done
clear
D)
768 mJ
done
clear
View Answer play_arrow
Time period of revolution of a nearest satellite around a planet of radius R is T. Period of revolution around another planet, whose radius is 3R but having same density is
A)
T
done
clear
B)
3T
done
clear
C)
9T
done
clear
D)
\[3\sqrt{3}\,T\]
done
clear
View Answer play_arrow
A cubical block of wood 10 cm on a side floats at the interface between oil and water with its lower surface horizontal and 4 cm below the interface. The density of oil is \[0.6\text{ }gc{{m}^{-3}}\]. The mass of block is
A)
706 g
done
clear
B)
607 g
done
clear
C)
760 g
done
clear
D)
670 g
done
clear
View Answer play_arrow
If there are no heat losses, the heat released by the condensation of x gram of steam at \[100{}^\circ \,C\] into water at \[100{}^\circ \,C\] can be used to convert y gram of ice at \[0{}^\circ C\] into water at\[100{}^\circ \,C\]. Then the ratio \[\operatorname{y}\,\,:\, x\] is nearly
A)
\[1:1\]
done
clear
B)
\[2.5 : 1\]
done
clear
C)
\[2 : 1\]
done
clear
D)
\[3 : 1\]
done
clear
View Answer play_arrow
Volume versus temperature graph of two moles of helium gas is as shown in figure. The ratio of heat absorbed and the work done by the gas in process 1-2 is
A)
3
done
clear
B)
\[\frac{5}{2}\]
done
clear
C)
\[\frac{5}{3}\]
done
clear
D)
None of these
done
clear
View Answer play_arrow
There are two spherical balls A and B of the same material with same surface, but the diameter of A is half that of B. If A and B are heated to the same temperature and then allowed to cool, them
A)
Rate of cooling is same in both
done
clear
B)
Rate of cooling of A is four times that of B
done
clear
C)
Rate of cooling of A is twice that of B
done
clear
D)
Rate of cooling of A is 1/4 times that of B
done
clear
View Answer play_arrow
Equations \[{{y}_{1}}=A\,\,\sin \,\,\omega t\] and \[{{y}_{2}}\,\,=\,\,\frac{A}{2}\,\sin \,\omega t\,\,+\frac{A}{2}\,\cos \,\,\omega t\] represent S.H.M. The ratio of the amplitudes of the two motions is
A)
1
done
clear
B)
2
done
clear
C)
0.5
done
clear
D)
\[\sqrt{2}\]
done
clear
View Answer play_arrow
A tuning fork A produces 4 beats/sec with another tuning fork B of frequency 320 Hz. On filing the fork A, 4 beats/sec are again heard. The frequency of fork A, after filing is
A)
324 Hz
done
clear
B)
320 Hz
done
clear
C)
316 Hz
done
clear
D)
314 Hz
done
clear
View Answer play_arrow
Three identical dipoles are arranged as shown below. What will be the net electric field at \[P\left( k=\frac{1}{4\pi {{\varepsilon }_{0}}} \right)\]
A)
\[\frac{k.p}{{{x}^{3}}}\]
done
clear
B)
\[\frac{2kp}{{{x}^{3}}}\]
done
clear
C)
Zero
done
clear
D)
\[\frac{\sqrt{2}kp}{{{x}^{3}}}\]
done
clear
View Answer play_arrow
Total surface area of a cathode is \[0.05\text{ }{{m}^{2}}\] and 1 A current passes through it for 1 hour. Thickness of nickle deposited on the cathode is (given that density of \[\operatorname{nickle} = 9 g/cc\] and its\[E.C.E.=-\,3.04\times {{10}^{-4}}\,g/C\])
A)
2.4 m
done
clear
B)
\[2.4\,\,\mu m\]
done
clear
C)
\[2.4\,\,\mu m\]
done
clear
D)
None of these
done
clear
View Answer play_arrow
A current carrying wire LN is bent in the from shown below. If wire carries a current of 10 A and it is placed in a magnetic field of 5 T which acts perpendicular to the paper outwards then it will experience a force
A)
Zero
done
clear
B)
5N
done
clear
C)
30 N
done
clear
D)
20 N
done
clear
View Answer play_arrow
Two short magnets of magnetic moment \[\,1000\text{ }A{{m}^{2}}\] are placed as shown at the comers of a square of side 10 cm. The net magnetic induction at P is
A)
0.1 T
done
clear
B)
0.2 T
done
clear
C)
0.3 T
done
clear
D)
0.4 T
done
clear
View Answer play_arrow
A group of electric lamps having a total power rating of 1000 watt is supplied by an ac voltage E \[\operatorname{E}=200 sin \left( 310\,t +60{}^\circ \right)\]. Then the rms value of the circuit current is
A)
10 A
done
clear
B)
\[10\sqrt{2}\,A\]
done
clear
C)
20 A
done
clear
D)
\[20\sqrt{2}\,A\]
done
clear
View Answer play_arrow
If light of wavelength a] is allowed to fall on a metal, then kinetic energy of photoelectrons emitted is\[{{E}_{1}}\]. If wavelength of light changes to \[\,{{\lambda }_{2}}\] then kinetic energy of electrons changes to\[{{E}_{2}}\]. Then work function of the metal is
A)
\[\frac{{{E}_{1}}{{E}_{2}}({{\lambda }_{1}}-{{\lambda }_{2}})}{{{\lambda }_{1}}{{\lambda }_{2}}}\]
done
clear
B)
\[\frac{{{E}_{1}}{{\lambda }_{1}}-{{E}_{2}}{{\lambda }_{2}})}{({{\lambda }_{1}}-{{\lambda }_{2}})}\]
done
clear
C)
\[\frac{{{E}_{1}}{{\lambda }_{1}}-{{E}_{2}}{{\lambda }_{2}})}{({{\lambda }_{2}}-{{\lambda }_{1}})}\]
done
clear
D)
\[\frac{{{\lambda }_{1}}{{\lambda }_{2}}-{{E}_{1}}{{E}_{2}}}{({{\lambda }_{2}}-{{\lambda }_{1}})}\]
done
clear
View Answer play_arrow
The diode used in the circuit shown in the figure has a constant voltage drop of 0.5 V at all currents and a maximum power rating of 100 milliwatts. What should be the value of the resistor R, connected in series with the diode for obtaining maximum current
A)
1.50
done
clear
B)
50
done
clear
C)
6.670
done
clear
D)
2000
done
clear
View Answer play_arrow
A ray of light strikes a plane mirror M at an angle of \[45{}^\circ \] as shown in the figure. After reflection, the ray passes through a prism of refractive index 1.5 whose apex angle is\[4{}^\circ \]. The total angle through which the ray is deviated is
A)
\[90{}^\circ \]
done
clear
B)
\[91{}^\circ \]
done
clear
C)
\[92{}^\circ \]
done
clear
D)
\[93{}^\circ \]
done
clear
View Answer play_arrow
In Young's double slit experiment, the 8th maximum with wavelength \[{{\lambda }_{1}}\] is at a distance \[{{d}_{1}}\] from the central maximum and the 6th maximum with a wavelength \[{{\lambda }_{2}}\] is at a distance \[{{d}_{2}}\]. Then \[({{d}_{1}}/{{d}_{2}})\] is equal to
A)
\[\frac{4}{3}\,\left( \frac{{{\lambda }_{2}}}{{{\lambda }_{1}}} \right)\]
done
clear
B)
\[\frac{4}{3}\,\left( \frac{{{\lambda }_{1}}}{{{\lambda }_{2}}} \right)\]
done
clear
C)
\[\frac{3}{4}\,\left( \frac{{{\lambda }_{2}}}{{{\lambda }_{1}}} \right)\]
done
clear
D)
\[\frac{3}{4}\,\left( \frac{{{\lambda }_{1}}}{{{\lambda }_{2}}} \right)\]
done
clear
View Answer play_arrow
At what angle must the two forces \[\left( x + y \right)\] and \[\left( x - y \right)\] act so that the resultant may be \[\sqrt{\left( {{x}^{2}} + {{y}^{2}} \right)}\]
A)
\[{{\cos }^{-1}}\,\left( -\frac{{{x}^{2}}+{{y}^{2}}}{2({{x}^{2}}-{{y}^{2}})} \right)\]
done
clear
B)
\[{{\cos }^{-1}}\,\left( -\frac{2({{x}^{2}}-{{y}^{2}})}{{{x}^{2}}+{{y}^{2}}} \right)\]
done
clear
C)
\[{{\cos }^{-1}}\,\left( -\frac{{{x}^{2}}+{{y}^{2}}}{{{x}^{2}}-{{y}^{2}}} \right)\]
done
clear
D)
\[{{\cos }^{-1}}\,\left( -\frac{{{x}^{2}}-{{y}^{2}}}{{{x}^{2}}+{{y}^{2}}} \right)\]
done
clear
View Answer play_arrow
A uniform cylinder of mass M lies on a fixed plane inclined at an angle \[\theta \] with horizontal. A flight string is tied to the cylinder at the rightmost point, and a mass m hangs from the string, as shown. Assume that the coefficient of friction between the cylinder and the incline plane is sufficiently large to prevent slipping. For the cylinder the remain static, the value of m is
A)
\[\frac{M\,\,\sin \,\,\theta }{1-\,\sin \,\,\theta }\]
done
clear
B)
\[\frac{M\,\,\cos \,\,\theta }{1+\,\,\sin \,\,\theta }\]
done
clear
C)
\[\frac{M\,\,\sin \,\,\theta }{1+\,\,\sin \,\,\theta }\]
done
clear
D)
\[\frac{M\,\,\cos \,\,\theta }{1-\,\,\sin \,\,\theta }\]
done
clear
View Answer play_arrow
A thick walled hollow sphere has outer radius R. It rolls down an inclined plane without slipping and its speed at the bottom is\[\nu \]. If the inclined plane is frictionless and the sphere slides down without rolling, its speed at the bottom is\[5\nu /4\]. What is the radius of gyration of the sphere?
A)
\[\frac{R}{\sqrt{2}}\]
done
clear
B)
\[\frac{R}{2}\]
done
clear
C)
\[\frac{3R}{4}\]
done
clear
D)
\[\frac{\sqrt{3}R}{4}\]
done
clear
View Answer play_arrow
A student performs an experiment for determination of\[g\,\left[ =\frac{4{{\pi }^{2}}l}{{{T}^{2}}} \right]\,,\,\,\,l\,\,\approx \,\,1\,m\], and he commits an error of\[\Delta L\]. For T he takes the time of n oscillations with the stop watch of least count \[\Delta T\] and he commits a human error of 0.1 s. For which of the following data, the measurement of g will be the most accurate?
A)
\[\Delta L=0.5,\text{ }\Delta T=0.1,\text{ }n=20\]
done
clear
B)
\[\Delta L=0.5,\text{ }\Delta T=0.1,\text{ }n=50\]
done
clear
C)
\[\Delta L=0.5,\text{ }\Delta T=0.01,\text{ }n=20\]
done
clear
D)
\[\Delta L=0.5,\text{ }\Delta T=0.05,\text{ }n=50\]
done
clear
View Answer play_arrow
A capacitor of capacitance \[{{C}_{1}}=1\,\,\mu F\] can withstand maximum voltage \[{{V}_{1}}\,\,=\,\,6\,\,kV\] (kilo volt) and another capacitor of capacitance \[{{C}_{2}}=3\,\,\mu F\] can withstand maximum voltage\[{{V}_{2}}\,\,=\,\,4\,\,kV\]. When the two capacitors are connected in series, the combined system can withstand a maximum voltage of
A)
4 kV
done
clear
B)
6 kV
done
clear
C)
8 kV
done
clear
D)
10 kV
done
clear
View Answer play_arrow
The nuclear radius of a nucleus with nucleon number 16 is \[3\times {{10}^{-15}}\,metre\]. Then the nuclear radius of a nucleus with nucleon number 128 is
A)
\[3\,\,\times \,\,{{10}^{-15}}\,m\]
done
clear
B)
\[1.5\,\,\times \,\,{{10}^{-15}}\,m\]
done
clear
C)
\[6\,\,\times \,\,{{10}^{-15}}\,m\]
done
clear
D)
\[4.5\,\,\times \,\,{{10}^{-15}}\,m\]
done
clear
View Answer play_arrow
In the circuit shown in figure,
Find the current in the 3.00 Q resistor.
A)
5.00 A
done
clear
B)
8.00 A
done
clear
C)
3.00 A
done
clear
D)
10.00 A
done
clear
View Answer play_arrow
Which of the following curves represent correctly the oscillation given by\[y={{y}_{0}}\,\sin \,(\omega t-\phi ),\,where\,\,0<\phi <90\].
A)
A
done
clear
B)
B
done
clear
C)
C
done
clear
D)
D
done
clear
View Answer play_arrow
The graph of displacement v/s time is
Its corresponding velocity-time graph will be
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
An ideal gas is taken around ABCA as shown in the\[P-V\,diagram\]. The work done during a cycle
A)
1PV q
done
clear
B)
PV
done
clear
C)
\[1/2PV\]
done
clear
D)
zero
done
clear
View Answer play_arrow
The resistance of a resistance thermometer has values 2.71 and 3.70 ohm at\[10{}^\circ C\text{ }and\text{ }100{}^\circ C\]. The temperature at which the resistance is 3.26 ohm is
A)
\[40{}^\circ \,C\]
done
clear
B)
\[50{}^\circ C\]
done
clear
C)
\[60{}^\circ \,C\]
done
clear
D)
\[70{}^\circ C\]
done
clear
View Answer play_arrow
The earth \[(mass\,\,=\,\,6\times {{10}^{24}}\,kg)\] revolves round the sun with angular velocity \[2\times {{10}^{-7}}\,rad/\sec \] in a circular orbit of radius\[1.5\,\,\times \,\,{{10}^{8}}km\]. The force exerted by the sun on the earth in nektons, is
A)
\[18\,\,\times \,\,{{10}^{25}}\]
done
clear
B)
zero
done
clear
C)
\[27\,\,\times \,\,{{10}^{39}}\]
done
clear
D)
\[36\,\,\times \,\,{{10}^{21}}\]
done
clear
View Answer play_arrow
Two magnets A and B are identical and these are arranged as shown in the figure. Their length is negligible in comparison to the separation between them. A magnetic needle is placed between the magnets at point P which gets deflected through an angle \[\theta \] under the influence of magnets. The ratio of distance \[{{d}_{1}}\,\,and\,\,{{d}_{2}}\] will be
A)
\[{{\left( 2\,\,tan\,\,\theta \right)}^{1/3}}\]
done
clear
B)
\[{{\left( 2\,\,tan\,\,\theta \right)}^{-1/3}}\]
done
clear
C)
\[{{\left( 2\,\,\cot \,\,\theta \right)}^{1/3}}\]
done
clear
D)
\[{{\left( 2\,\,\cot \,\,\theta \right)}^{-1/3}}\]
done
clear
View Answer play_arrow
The half-life of \[B{{i}^{210}}\] is 5 days. What time is taken by \[{{\left( 7/8 \right)}^{th}}\] part of the sample to decay
A)
3.4 days
done
clear
B)
10 days
done
clear
C)
15 days
done
clear
D)
20 days
done
clear
View Answer play_arrow
Light wave enters from medium 1 to medium 2. Its velocity in 2nd medium is double from 1st. For total internal reflection the angle of incidence must be greater than
A)
\[30{}^\circ \]
done
clear
B)
\[60{}^\circ \]
done
clear
C)
\[45{}^\circ \]
done
clear
D)
\[90{}^\circ \]
done
clear
View Answer play_arrow
In the Young's double slit experiment with sodium light. The slits are 0.589 m apart. The angular separation of the third maximum from the central maximum will be \[\left( given \lambda = 589 mm \right)\]
A)
\[{{\sin }^{-1}}\,(0.33\,\,\times \,\,{{10}^{8}})\]
done
clear
B)
\[{{\sin }^{-1}}\,(0.33\,\,\times \,\,{{10}^{-6}})\]
done
clear
C)
\[{{\sin }^{-1}}\,(3\,\,\times \,\,{{10}^{8}})\]
done
clear
D)
\[{{\sin }^{-1}}\,(3\,\,\times \,\,{{10}^{-6}})\]
done
clear
View Answer play_arrow
An electric bulb illuminates a plane surface. The intensity of illumination on the surface at a point 2m away from the bulb is\[5\,\,\times \,\,{{10}^{-}}^{4}phot\text{ }\left( lumen/c{{m}^{2}}\text{ } \right)\]. The line joining the bulb to the point makes an angle of \[60{}^\circ \] with the normal to the surface. The intensity of the bulb in candela is
A)
\[40\sqrt{3}\]
done
clear
B)
40
done
clear
C)
20
done
clear
D)
\[40\times {{10}^{-4}}\]
done
clear
View Answer play_arrow
The dimension of \[\frac{1}{2}\,{{\varepsilon }_{0}}{{E}^{2}}\], where \[{{\varepsilon }_{0}}\] is permittivity of free space and E is electric field, is
A)
\[\left[ M{{L}^{2}}{{T}^{-}}^{2} \right]\]
done
clear
B)
\[\left[ M{{L}^{-1}}{{T}^{-}}^{2} \right]\]
done
clear
C)
\[\left[ M{{L}^{2}}{{T}^{-}}^{1} \right]\]
done
clear
D)
\[\left[ ML{{T}^{-}}^{1} \right]\]
done
clear
View Answer play_arrow
In an experiment four quantities a, b, c and d are measured with percentage error \[1%,\text{ }2%,\text{ }3%\text{ }and\text{ }4%\] respectively. Quantity P is calculated as follows: \[P=\frac{{{a}^{3}}{{b}^{2}}}{cd}%\]
A)
\[14\,%\]
done
clear
B)
\[10\,%\]
done
clear
C)
\[7\,%\]
done
clear
D)
\[4\,%\]
done
clear
View Answer play_arrow
A particle moves along a straight line OX. At a time t (in seconds) the distance x (in metres) of the particle is given by \[\operatorname{x}= 40 + 12t -{{t}^{3}}\] How long would the particle travel before coming to rest?
A)
24 m
done
clear
B)
40 m
done
clear
C)
56 m
done
clear
D)
16 m
done
clear
View Answer play_arrow
The distance travelled by a particle starting from rest and moving with an acceleration \[\frac{4}{3}\,m{{s}^{-2}}\], in the third second is
A)
6 m
done
clear
B)
4 m
done
clear
C)
\[\frac{10}{3}\,m\]
done
clear
D)
\[\frac{19}{3}\,m\]
done
clear
View Answer play_arrow
A body is moving with velocity 30 m/s towards east. After 10 s its velocity becomes 40 m/s towards north. The average acceleration of the body is
A)
\[7\text{ }m/{{s}^{2}}\]
done
clear
B)
\[\sqrt{7}\text{ }m/{{s}^{2}}\]
done
clear
C)
\[5\text{ }m/{{s}^{2}}\]
done
clear
D)
\[1\text{ }m/{{s}^{2}}\]
done
clear
View Answer play_arrow
Degree of dissociation of \[0.1\,\,N\,\,C{{H}_{3}}OOH\] is \[\left( Dissociation constant = 1\,\,\times \,\,1{{0}^{-}}^{5} \right)\]
A)
\[{{10}^{-5}}\]
done
clear
B)
\[{{10}^{-4}}\]
done
clear
C)
\[{{10}^{-3}}\]
done
clear
D)
\[{{10}^{-2}}\]
done
clear
View Answer play_arrow
Which of the following substance is an electrolyte?
A)
Chloroform
done
clear
B)
Benzene
done
clear
C)
Toluene
done
clear
D)
Magnesium chloride
done
clear
View Answer play_arrow
In equation \[_{11}N{{a}^{23}}{{+}_{1}}{{H}^{1}}\,{{\to }_{12}}\,M{{g}^{23}}\,+\,\,x,\,\,x\,\,\] represents
A)
neutron
done
clear
B)
deutron
done
clear
C)
\[\alpha -particle\]
done
clear
D)
positron
done
clear
View Answer play_arrow
In the nuclear reaction \[_{4}^{9}Be\,(p,\,\,\alpha )\,X\,\], the X is
A)
\[_{2}^{4}He\]
done
clear
B)
\[_{3}^{6}\,Li\]
done
clear
C)
\[_{3}^{7}\,Li\]
done
clear
D)
\[_{4}^{8}\,Be\]
done
clear
View Answer play_arrow
Which phrase would be incorrect to use?
A)
A molecule of a compound
done
clear
B)
A molecule of an element
done
clear
C)
An atom of an element
done
clear
D)
None of these
done
clear
View Answer play_arrow
One would expect proton to have very large
A)
ionization potential
done
clear
B)
radius
done
clear
C)
charge
done
clear
D)
hydration energy
done
clear
View Answer play_arrow
n gram of substance X reacts with m gram of substance Y to form p gram of substance and q gram of substance S. This reaction can be represented as,\[\operatorname{X} + Y=R + S\]. The relation which can be established in the amounts of the reactants and the products will be
A)
\[n-m=p-q\]
done
clear
B)
\[n+m=p+q\]
done
clear
C)
\[\operatorname{n} = m\]
done
clear
D)
\[p = q\]
done
clear
View Answer play_arrow
Sulphur forms the chlorides \[{{S}_{2}}C{{l}_{2}}\] and\[SC{{l}_{2}}\]. The equivalent mass of sulphur in \[SC{{l}_{2}}\] is
A)
8 g/mole
done
clear
B)
16 g/mole
done
clear
C)
64.8 g/mole
done
clear
D)
32 g/mole
done
clear
View Answer play_arrow
The electronic structure of four elements A, B, C, D are
[A] \[1{{s}^{2}}\] [B] \[1{{s}^{2}},\,\,2{{s}^{2}},\,\,2{{p}^{2}}\] [C] \[1{{s}^{2}},\,\,2{{s}^{2}},\,\,2{{p}^{5}}\] [D] \[1{{s}^{2}},\,\,2{{s}^{2}},\,\,2{{p}^{6}}\] The tendency to form electrovalent bond is largest in
A)
A
done
clear
B)
B
done
clear
C)
C
done
clear
D)
D
done
clear
View Answer play_arrow
Chloride of metal is\[MC{{l}_{2}}\]. The formula of its phosphate will be
A)
\[{{M}_{2}}P{{O}_{4}}\]
done
clear
B)
\[{{M}_{3}}{{\left( P{{O}_{4}} \right)}_{2}}~\]
done
clear
C)
\[{{M}_{2}}{{\left( P{{O}_{4}} \right)}_{3}}\]
done
clear
D)
\[MP{{O}_{4}}\]
done
clear
View Answer play_arrow
Two solutions of a substance (non-electrolyte) are mixed in the following manner 480 ml of M first solution + 520 mL of 1.2 M second solution. What is the molarity of the final mixture?
A)
1.20 M
done
clear
B)
1.50 M
done
clear
C)
1.344 M
done
clear
D)
2.70 M
done
clear
View Answer play_arrow
A solution of \[A{{l}_{2}}{{\left( S{{O}_{4}} \right)}_{3}}\,\{d=1.253\,g/ml\text{ }\!\!\}\!\!\text{ }\] contain \[22\,%\] salt by weight. The molarity, normality and molality of the solution is
A)
0.805 M, 4.83 N, 0.825 m
done
clear
B)
0.825 M, 48.3 N, 0.805 m
done
clear
C)
4.83 M, 4.83 N, 4.83 m
done
clear
D)
None
done
clear
View Answer play_arrow
Degree of ionisation of a solution depends upon
A)
temperature
done
clear
B)
nature of the electrolyte
done
clear
C)
nature of the solvent
done
clear
D)
none of these
done
clear
View Answer play_arrow
When a molten ionic hydride is electrolysed
A)
hydrogen is liberated at the cathode
done
clear
B)
hydrogen is liberated at the anode
done
clear
C)
there is no reaction
done
clear
D)
\[{{H}^{-}}\] ions produced migrate to the cathode
done
clear
View Answer play_arrow
Which of the following is not correct for ionic crystals?
A)
They possess high melting point and boiling point
done
clear
B)
All are electrolyte
done
clear
C)
Exhibit the property of isomorphism
done
clear
D)
Exhibit directional properties of the bond
done
clear
View Answer play_arrow
Quartz is a crystalline variety of
A)
silica
done
clear
B)
sodium silicate
done
clear
C)
silicon carbide
done
clear
D)
silicon
done
clear
View Answer play_arrow
Which of the following statements is not true in regard to transition elements?
A)
They readily form complex compounds
done
clear
B)
They show variable valency
done
clear
C)
All their ions are colourless
done
clear
D)
Their ions contain partially filled d -electron levels
done
clear
View Answer play_arrow
Elements which generally exhibit multiple oxidation states and whose ions are usually coloured are
A)
metalloids
done
clear
B)
transition elements
done
clear
C)
non-metals
done
clear
D)
gases
done
clear
View Answer play_arrow
The coordination number of a central metal atom in a complex is determined by
A)
the number of ligands around a metal ion bonded by sigma and pi-bonds both
done
clear
B)
the number around a metal ion bonded by pi-bonds
done
clear
C)
the number of ligands around a metal ion bonded by sigma bonds
done
clear
D)
the number of only anionic ligands bonded to the metal ion
done
clear
View Answer play_arrow
In the extraction of which of the following, complex ion forms?
A)
Cu
done
clear
B)
Ag
done
clear
C)
Fe
done
clear
D)
Na
done
clear
View Answer play_arrow
It is general principle that the less energy a system contains, it is
A)
less stable
done
clear
B)
more stable
done
clear
C)
unstable
done
clear
D)
more unstable
done
clear
View Answer play_arrow
Internal energy is an example of
A)
path function
done
clear
B)
state function
done
clear
C)
both [a] and [b]
done
clear
D)
none of these
done
clear
View Answer play_arrow
The element with atomic number 36 belongs to ... block in the periodic table
A)
p
done
clear
B)
s
done
clear
C)
f
done
clear
D)
d
done
clear
View Answer play_arrow
An element has electronic configuration? \[1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{6}}\,3{{s}^{2}}\,3{{p}^{4}}\]. Predict their period, group and block.
A)
\[Period = {{3}^{rd}}, block = p, group =16\]
done
clear
B)
\[Period = {{5}^{th}}, block = s, group = 1\]
done
clear
C)
\[Period = {{3}^{rd}}, block = p, group = 10\]
done
clear
D)
\[Period={{4}^{th}}, block = d, group = 12\]
done
clear
View Answer play_arrow
Which gives \[C{{H}_{4}}\] when treated with water?
A)
Silicon carbide
done
clear
B)
Calcium carbide
done
clear
C)
Aluminium carbide
done
clear
D)
Iron carbide
done
clear
View Answer play_arrow
In alkanes, the bond angle is
A)
\[109.5{}^\circ \]
done
clear
B)
\[109{}^\circ \]
done
clear
C)
\[120{}^\circ \]
done
clear
D)
\[180{}^\circ \]
done
clear
View Answer play_arrow
Which ore contains both iron and copper?
A)
Cuprite
done
clear
B)
Chalcocite
done
clear
C)
Chalcopyrite
done
clear
D)
Malachite
done
clear
View Answer play_arrow
Chile saltpetre is
A)
\[NaN{{O}_{3}}\]
done
clear
B)
\[KN{{O}_{3}}\]
done
clear
C)
\[N{{a}_{2}}S{{O}_{4}}\]
done
clear
D)
\[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\]
done
clear
View Answer play_arrow
Which of the halogen has maximum affinity for hydrogen?
A)
\[{{F}_{2}}\]
done
clear
B)
\[C{{l}_{2}}\]
done
clear
C)
\[B{{r}_{2}}\]
done
clear
D)
\[{{I}_{2}}\]
done
clear
View Answer play_arrow
Hydrogen acts as a reducing agent and thus resembles
A)
halogen
done
clear
B)
noble gas
done
clear
C)
Radioactive elements
done
clear
D)
alkali metals
done
clear
View Answer play_arrow
In the following reaction, \[3B{{r}_{2}}+6CO_{3}^{2-}+3{{H}_{2}}O\,\,=\,\,5B{{r}^{-}}+BrO_{3}^{-}\,\,+6HC{{O}_{3}}\]
A)
Bromine is oxidised and carbonate is reduced
done
clear
B)
Bromine is reduced and water is oxidised
done
clear
C)
Bromine is neither reduced nor oxidised
done
clear
D)
Bromine is both reduced and oxidised
done
clear
View Answer play_arrow
In acid solution, the reaction \[MnO_{^{4}}^{-}\,\to \,M{{n}^{2+}}\] involves
A)
oxidation by 3 electrons
done
clear
B)
reduction by 3 electrons
done
clear
C)
oxidation by 5 electrons
done
clear
D)
reduction by 5 electrons
done
clear
View Answer play_arrow
A reaction is catalysed by 'X' Here 'X'
A)
decreases the rate constant of reaction
done
clear
B)
does not affect the equilibrium constant of reaction
done
clear
C)
decreases the enthalpy of reaction
done
clear
D)
decreases the activation energy
done
clear
View Answer play_arrow
The velocity constant of a reaction at 290 K was found to be \[3.2 \times 1{{0}^{-}}^{3}\]. At 300 K it will be
A)
\[1.28 \times 1{{0}^{-}}^{2}\]
done
clear
B)
\[6.4 \times 1{{0}^{-}}^{3}\]
done
clear
C)
\[9.6 \times 1{{0}^{-}}^{3}\]
done
clear
D)
\[3.2 \times 1{{0}^{-}}^{4}\]
done
clear
View Answer play_arrow
Noble gases are adsorbed by
A)
anhydrous calcium chloride
done
clear
B)
ferric hydroxide
done
clear
C)
\[conc.\,\,{{H}_{2}}S{{O}_{4}}\]
done
clear
D)
activated coconut charcoal
done
clear
View Answer play_arrow
What will be the effect of increase in temperature on physical adsorption?
A)
It will decrease
done
clear
B)
It will increase
done
clear
C)
First increase then decrease
done
clear
D)
None of these
done
clear
View Answer play_arrow
A 10 g of a gas at atmospheric pressure is cooled from \[273{}^\circ C\text{ }to\text{ }0{}^\circ C\] keeping the volume constant, its pressure would become
A)
\[1/2\text{ }atm\]
done
clear
B)
\[1/273\text{ }atm\]
done
clear
C)
2 atm
done
clear
D)
273 atm
done
clear
View Answer play_arrow
Pressure remaining the same, the volume of a given mass of an ideal gas increases for every degree centigrade rise in temperature by definite fraction of its volume at
A)
\[0{}^\circ C\]
done
clear
B)
its critical temperature
done
clear
C)
absolute zero
done
clear
D)
its Boyle temperature
done
clear
View Answer play_arrow
For the reaction \[PC{{l}_{3}}(g)+C{{l}_{2}},\,(g)\,\,\rightleftharpoons \,\,PC{{l}_{5}}\,(g)\] the position of equilibrium can be shifted to the right by
A)
increasing the temperature
done
clear
B)
doubling the volume
done
clear
C)
addition of \[C{{l}_{2}}\] at constant volume
done
clear
D)
addition of equimolar quantities of \[PC{{l}_{3}}\] and \[PC{{l}_{5}}\]
done
clear
View Answer play_arrow
If a system is at equilibrium the rate of forward to the reverse reaction is
A)
less
done
clear
B)
equal
done
clear
C)
high
done
clear
D)
at equilibrium
done
clear
View Answer play_arrow
The number of moles of \[KMn{{O}_{4}}\] that will be needed to react with one mole of sulphite ion in acidic solution is:
A)
\[4/5\]
done
clear
B)
\[3/5\]
done
clear
C)
1
done
clear
D)
\[2/5\]
done
clear
View Answer play_arrow
How many grams of concentrated nitric acid solution should be used to prepare 250 mL of\[2.0\text{ }M\text{ }HN{{O}_{3}}\]? The concentrated acid is \[70\,%\text{ }HN{{O}_{3}}\].
A)
\[90.0\,g\,conc.HN{{O}_{3}}\]
done
clear
B)
\[70.0\,g\,conc.HN{{O}_{3}}\]
done
clear
C)
\[54.0\,g\,conc.HN{{O}_{3}}\]
done
clear
D)
\[45.0\,g\,conc.HN{{O}_{3}}\]
done
clear
View Answer play_arrow
A mixture of gases contains \[{{H}_{2}}\,\,and\,\,{{O}_{2}}\] gases in the ratio of \[1 : 4 \left( w/w \right)\]. What is the molar ratio of the two gases in the mixture?
A)
\[16:1\]
done
clear
B)
\[2 : 1\]
done
clear
C)
\[1 : 4\]
done
clear
D)
\[4\, :\, 1\]
done
clear
View Answer play_arrow
The measurement of the electron position is associated with an uncertainty in momentum, which is equal to\[1 \,\times \, 1{{0}^{-}}^{18}g cm {{s}^{-}}^{1}\]. The uncertainty in electron velocity is (mass of an electron is \[9 \,\times \, 1{{0}^{-28}}\,g\])
A)
\[1\, \times \, 1{{0}^{6}}cm {{s}^{-}}^{1}\]
done
clear
B)
\[1\, \times \, 1{{0}^{5}}\,cm {{s}^{-}}^{1}\]
done
clear
C)
\[1\, \times \, 1{{0}^{11}}\,cm {{s}^{-}}^{1}\]
done
clear
D)
\[1.1\, \times \, 1{{0}^{9}}\,cm {{s}^{-}}^{1}\]
done
clear
View Answer play_arrow
The orbital angular momentum of a \[p-electron\] is given as
A)
\[\sqrt{6}\cdot \,\frac{h}{2\pi }\]
done
clear
B)
\[\sqrt{3}\cdot \,\frac{h}{2\pi }\]
done
clear
C)
\[\sqrt{\frac{3}{2}}\,\,\frac{h}{\pi }\]
done
clear
D)
\[\frac{h}{\sqrt{2}\,\pi }\]
done
clear
View Answer play_arrow
Photorespiration, usually occurs in
A)
one-cell organelles only
done
clear
B)
two-cell organelles
done
clear
C)
three-cell organelles
done
clear
D)
four-cell organelles
done
clear
View Answer play_arrow
In Selaginella, reduction division occurs during the formation of
A)
sperms
done
clear
B)
microspores only
done
clear
C)
megaspores only
done
clear
D)
both [b] and [c]
done
clear
View Answer play_arrow
The term chromatophore was coined by
A)
Schmitz
done
clear
B)
Comparethi
done
clear
C)
W.Pfeiffer
done
clear
D)
Singer and Nicholsan
done
clear
View Answer play_arrow
The sphere of living matter together with water, air and soil on the surface of earth is called
A)
atmosphere
done
clear
B)
hydrosphere
done
clear
C)
lithosphere
done
clear
D)
biosphere
done
clear
View Answer play_arrow
Which type of cancer is found in lymph nodes and spleen?
A)
carcinoma
done
clear
B)
sarcoma
done
clear
C)
leukaemia
done
clear
D)
lymphoma
done
clear
View Answer play_arrow
Which of the following terms is not concerned with genetic recombination in bacteria?
A)
Transformation
done
clear
B)
Transduction
done
clear
C)
Translation
done
clear
D)
Conjugation.
done
clear
View Answer play_arrow
The process of the escape of liquid from the tip of uninjured leaf is called
A)
guttation
done
clear
B)
transpiration
done
clear
C)
evaporation
done
clear
D)
evapo-transpiration
done
clear
View Answer play_arrow
Moderate rainfall during summer produces
A)
desert
done
clear
B)
grasslands
done
clear
C)
scrub forests
done
clear
D)
deciduous forests
done
clear
View Answer play_arrow
Phenomenon of industrial melanism demonstrates
A)
natural selection
done
clear
B)
induced mutation
done
clear
C)
geographical isolation
done
clear
D)
reproductive isolation
done
clear
View Answer play_arrow
When the gametophyte is not formed by spores but by any other part of sporophyte, it is known as
A)
multispory
done
clear
B)
polyspory
done
clear
C)
apospory
done
clear
D)
germination
done
clear
View Answer play_arrow
Middle piece of a mammalian sperm contains
A)
nucleus
done
clear
B)
centriole
done
clear
C)
mitochondria
done
clear
D)
vacuole
done
clear
View Answer play_arrow
The black pigment in the eye, which reduces the internal reflection, is located in
A)
retina
done
clear
B)
iris
done
clear
C)
sclerotic
done
clear
D)
cornea
done
clear
View Answer play_arrow
The placenta of human beings belong to the category of
A)
haemo-chorialis
done
clear
B)
syndesmo-chorialis
done
clear
C)
endothelio-chorialis
done
clear
D)
epithelio-chorialis
done
clear
View Answer play_arrow
Antiserum contain
A)
anitgens
done
clear
B)
leucocytes
done
clear
C)
antibodies
done
clear
D)
none of these
done
clear
View Answer play_arrow
A mature ligule, having a prominent basal portion, is called
A)
trichocyst
done
clear
B)
heterocyst
done
clear
C)
rhizophore
done
clear
D)
Glossopodium
done
clear
View Answer play_arrow
Pollination by snail and slug is known as
A)
omithophilous
done
clear
B)
chiropterophilous
done
clear
C)
entomophilous
done
clear
D)
malacophilous
done
clear
View Answer play_arrow
Which of the following RNAs picks up specific amino acid from amino acid pool in the cytoplasm to ribosome during protein synthesis?
A)
\[t-RNA\]
done
clear
B)
\[m-RNA\]
done
clear
C)
\[r-RNA\]
done
clear
D)
all of these
done
clear
View Answer play_arrow
Primitive types of stomata are found in the
A)
apophysis of capsule
done
clear
B)
leaves of moss plants
done
clear
C)
axes of the moss plant
done
clear
D)
all of these
done
clear
View Answer play_arrow
Single filament of Nostoc without mucilage sheath is known as
A)
mycelium
done
clear
B)
colony
done
clear
C)
trichome
done
clear
D)
hyphae
done
clear
View Answer play_arrow
Secretion of which of the following is under neurosecretory nerve axons?
A)
pineal
done
clear
B)
adrenal cortex
done
clear
C)
anterior pituitary
done
clear
D)
posterior pituitary
done
clear
View Answer play_arrow
Sensation of stomach pain is due to
A)
interoceptors
done
clear
B)
exteroceptors
done
clear
C)
proprioceptors
done
clear
D)
teloreceptors
done
clear
View Answer play_arrow
Addison?s disease results from
A)
hyposecretion of adrenals
done
clear
B)
hypertrophy of gonads
done
clear
C)
hyperactivity of cells of Leydig
done
clear
D)
none of these
done
clear
View Answer play_arrow
Galapagos islands are associated with the name of
A)
Wallace
done
clear
B)
Malthus
done
clear
C)
Darwin
done
clear
D)
Lamarck
done
clear
View Answer play_arrow
Pacinian corpuscles occur in the skin of certain parts of body in mammals. These are
A)
type of glands
done
clear
B)
pain receptors
done
clear
C)
naked tactile receptors
done
clear
D)
encapsulated pressure receptors
done
clear
View Answer play_arrow
Which of the following disease is due to an allergic reaction?
A)
Goitre
done
clear
B)
Enteric fever
done
clear
C)
Skin cancer
done
clear
D)
Hay fever
done
clear
View Answer play_arrow
Sympathetic nerves in mammals arise from
A)
sacral region
done
clear
B)
cervical region
done
clear
C)
thoraco-lumbar region
done
clear
D)
3rd, 7th, 9th and 10th cranial nerves
done
clear
View Answer play_arrow
In nucleoplasm, a conspicuous body of spherical shape attached to a particular chromosome on a definite position is called
A)
plasmid
done
clear
B)
karyolymph
done
clear
C)
nucleolus
done
clear
D)
nuclear reticulum
done
clear
View Answer play_arrow
Which of the following is dissolved in water for making Bordeaux mixture?
A)
calcium chloride
done
clear
B)
copper sulphate
done
clear
C)
sodium chloride
done
clear
D)
none of these
done
clear
View Answer play_arrow
A plant cell has potential to develop into full plant. This property of the plant cell is called
A)
tissue culture
done
clear
B)
totipotency
done
clear
C)
pleuripotency
done
clear
D)
gene cloning
done
clear
View Answer play_arrow
The relationship in an ecosystem can be depicted in
A)
pyramid of energy
done
clear
B)
pyramid of biomass
done
clear
C)
pyramid of numbers
done
clear
D)
all of these
done
clear
View Answer play_arrow
The proper scientific name of cellobiose is
A)
\[4-O-\beta -D-glucopyranosyl-D-\alpha -\]\[glucopyranose\]
done
clear
B)
\[8-O-\beta -D-glucopyranosyl-D-gIucose\]
done
clear
C)
\[4N{{H}_{2}}S{{O}_{4}}-\beta -D-reductase\]
done
clear
D)
\[6N{{H}_{2}}P{{O}_{4}}\,\alpha -D-reductase\]
done
clear
View Answer play_arrow
The plant material, which is widely used in the preparation of culture medium, is
A)
Cycas revolute
done
clear
B)
Cocos nucifera
done
clear
C)
Pinus longifolia
done
clear
D)
Borassus flabellifer
done
clear
View Answer play_arrow
The chief function of phloem is the conduction of
A)
food
done
clear
B)
mineral
done
clear
C)
water
done
clear
D)
air
done
clear
View Answer play_arrow
Phytotron is a device by which
A)
mutations are produced in plants
done
clear
B)
plants are grown in controlled environment
done
clear
C)
Protons are liberated
done
clear
D)
leaf fall occurs on abscission layer
done
clear
View Answer play_arrow
Which of the following is nongenetic, and is utilised for protein synthesis?
A)
\[t-RNA\]
done
clear
B)
\[Z-RNA\]
done
clear
C)
\[m-RNA\]
done
clear
D)
none of these
done
clear
View Answer play_arrow
Which of the following is not correctly matched?
A)
Root knot disease - Meloidogynejavanica
done
clear
B)
Smut of bajra - Tolysporium penicillariae
done
clear
C)
Covered smut of barley - Ustilago nuda
done
clear
D)
Late blight of potato - Phytophthora infestans
done
clear
View Answer play_arrow
Passive immunity is defined as immunity
A)
inherited from the parents
done
clear
B)
achieved through vaccination
done
clear
C)
acquired through first exposure to the disease
done
clear
D)
achieved through the sera of other animals enriched in antibodies
done
clear
View Answer play_arrow
The structure, which remains unchanged during metamorphosis of frog's tadpole, is
A)
lung
done
clear
B)
heart
done
clear
C)
intestine
done
clear
D)
nervous system
done
clear
View Answer play_arrow
Cells of deiter occur in
A)
utriculus
done
clear
B)
retina of eyes
done
clear
C)
organ of corti
done
clear
D)
sebaceous glands
done
clear
View Answer play_arrow
The cells named podocytes occur in
A)
glomerulus of kidney
done
clear
B)
wall of capillaries
done
clear
C)
neck region of nephrons
done
clear
D)
large intestine
done
clear
View Answer play_arrow
Malathion, parathion and fenitrothion belong to group of
A)
triazines
done
clear
B)
carbamates
done
clear
C)
pyretheroids
done
clear
D)
organophosphate
done
clear
View Answer play_arrow
Immediately after ovulation, the mammalian egg is covered by a membrane known as
A)
chorion
done
clear
B)
zona pellucida
done
clear
C)
corona radiate
done
clear
D)
vitelline membrane
done
clear
View Answer play_arrow
Treatment with 'Alloxan' destroys
A)
STH cells
done
clear
B)
\[\beta -cells\text{ }of\text{ }islets\text{ }of\text{ }Langerhans\]
done
clear
C)
cells of Sertoli
done
clear
D)
cells of Leydig
done
clear
View Answer play_arrow
Distance between two linked genes upon a chromosome is measured in cross over units, is
A)
ratio of crossing over between them
done
clear
B)
cross-overvalue
done
clear
C)
number of other genes between them
done
clear
D)
none of these
done
clear
View Answer play_arrow
The genes, which are confined to differential region of Y-chromosome only, are called
A)
mutant
done
clear
B)
autosomal
done
clear
C)
holandric
done
clear
D)
sex-linked
done
clear
View Answer play_arrow
Eggs having yolk in their centre of cytoplasm in peripheral layer, are called
A)
isolecithal
done
clear
B)
microlecithai
done
clear
C)
centrolecithal
done
clear
D)
telolecithal
done
clear
View Answer play_arrow
Arbor vitae is composed of
A)
grey matter
done
clear
B)
neuroglial cells
done
clear
C)
white matter
done
clear
D)
both [a] and [c]
done
clear
View Answer play_arrow
Termination of gastrulation is marked by
A)
obliteration of archenteron
done
clear
B)
closure of neural tube
done
clear
C)
obliteration of blastocoel
done
clear
D)
closure of blastocoel
done
clear
View Answer play_arrow
Mechanism of uric acid excretion in a nephron, is
A)
osmosis
done
clear
B)
diffusion
done
clear
C)
secretion
done
clear
D)
ultrafiltration
done
clear
View Answer play_arrow
Most primitive living mammals, which provide an evidence of organic evolution from geographical distribution are found in
A)
China
done
clear
B)
India
done
clear
C)
Australia
done
clear
D)
Africa
done
clear
View Answer play_arrow
Which bacteria is utilized in Gober gas plant?
A)
Methanogens
done
clear
B)
Nitrifying bacteria
done
clear
C)
Ammonifying bacteria
done
clear
D)
Denitrifying bacteria
done
clear
View Answer play_arrow
There exists a close association between the alga and the fungus within a lichen. The fungus provides food for the alga
A)
provides protection, anchorage and
done
clear
B)
absorption for the alga
done
clear
C)
fixes the atmospheric nitrogen for the alga
done
clear
D)
releases oxygen for the alga
done
clear
View Answer play_arrow
Which one of the following is a slime mould?
A)
Anabaena
done
clear
B)
Rhizopus
done
clear
C)
Physarum
done
clear
D)
Thiobacillus
done
clear
View Answer play_arrow
Phylogenetic system of classification is based on:
A)
Floral characters
done
clear
B)
Evolutionary relationships
done
clear
C)
Morphological features
done
clear
D)
Chemical constituents
done
clear
View Answer play_arrow
The cyanobacteria are also referred to as
A)
Slime moulds
done
clear
B)
Blue green algae
done
clear
C)
Protists
done
clear
D)
Golden algae
done
clear
View Answer play_arrow
True nucleus is absent in:
A)
Volvox
done
clear
B)
Anabaena
done
clear
C)
Mucor
done
clear
D)
Vaucheria
done
clear
View Answer play_arrow
Which one of the following has haplontic life cycle?
A)
Wheat
done
clear
B)
Funaria
done
clear
C)
Polytrichum
done
clear
D)
Ustilago
done
clear
View Answer play_arrow
Gymnosperms are also called soft wood spermatophytes because they lack
A)
Thick-walled tracheids
done
clear
B)
Xylem fibres
done
clear
C)
Cambium
done
clear
D)
Phloem fibres
done
clear
View Answer play_arrow
In contrast to annelids the platyhelminths show
A)
absence of body cavity
done
clear
B)
presence of pseudocoel
done
clear
C)
Radial symmetry
done
clear
D)
Bilateral symmetry
done
clear
View Answer play_arrow
Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?
A)
Mammalia: give birth to young ones.
done
clear
B)
Reptilia: possess 3-chambered heart with one incompletely divided ventricle
done
clear
C)
Chordata: possess a mouth provided with an upper and a lower jaw
done
clear
D)
Chondrichthyes: possess cartilaginous Endoskeleton
done
clear
View Answer play_arrow
Cytoskeleton is made up of:
A)
Proteinaceous filaments
done
clear
B)
Calcium carbonate granules
done
clear
C)
Callose deposits
done
clear
D)
Cellulose microfibrils
done
clear
View Answer play_arrow
Select the correct statement from the following regarding cell membrane:
A)
Lipids are arranged in bilayer with polar heads towards the inner part
done
clear
B)
Fluid mosaic model of cell membrane was proposed by Singer and Nicolson
done
clear
C)
\[N{{a}^{+}}\,and\,\,{{K}^{+}}\] ions move across cell membrane by passive transport
done
clear
D)
Proteins make up 60 to \[70%\] of the eel membrane
done
clear
View Answer play_arrow
Select the correct matching in the following pairs:
A)
Rough ER-Oxidation of fatty acids
done
clear
B)
Smooth ER-Oxidation of phospholipidt
done
clear
C)
Smooth ER-Synthesis of lipids
done
clear
D)
Rough ER-Synthesis of glycogen
done
clear
View Answer play_arrow
Cell wall is absent in:
A)
Nostoc
done
clear
B)
Aspergillus
done
clear
C)
Funaria
done
clear
D)
Mycoplasma
done
clear
View Answer play_arrow
Which one of the following is a non-reducing carbohydrate?
A)
Maltose
done
clear
B)
Sucrose
done
clear
C)
Lactose
done
clear
D)
Ribose 5-phosphate
done
clear
View Answer play_arrow
A prokaryotic autotrophic nitrogen fixing symbiont is found in:
A)
Pisum
done
clear
B)
Ainus
done
clear
C)
Cycas
done
clear
D)
Cicer
done
clear
View Answer play_arrow
Minerals known to be required in large amounts for plant growth include:
A)
magnesium, sulphur, iron, zinc
done
clear
B)
phosphorus, potassium, sulphur, calcium
done
clear
C)
calcium, magnesium, manganese, copper
done
clear
D)
potassium, phosphorus, selenium, boron
done
clear
View Answer play_arrow
Cyclic photophosphorylation results in the formation of:
A)
ATP
done
clear
B)
NADPH
done
clear
C)
ATP and NADPH
done
clear
D)
\[ATP,\text{ }NADPH\text{ }and\text{ }{{O}_{2}}\]
done
clear
View Answer play_arrow
Of the total incident solar radiation the proportion of PAR is:
A)
More than 80%
done
clear
B)
About 70%
done
clear
C)
About 60%
done
clear
D)
Less than 50%
done
clear
View Answer play_arrow
Coiling of garden pea tendrils around any support is an example of:
A)
Thigmotaxis
done
clear
B)
Thigmonasty
done
clear
C)
Thigmotropism
done
clear
D)
Thermotaxis
done
clear
View Answer play_arrow
A few normal seedling of tomato were kept in a dark room. After few days they were found to have become white-coloured like albions. Which of the following terms will you use to describe them?
A)
Mutated
done
clear
B)
Embolised
done
clear
C)
Etiolated
done
clear
D)
Defoliated
done
clear
View Answer play_arrow
For its activity, carboxypeptidase requires:
A)
Iron
done
clear
B)
Niacin
done
clear
C)
Copper
done
clear
D)
Zinc
done
clear
View Answer play_arrow
Gastric juice of infants contains:
A)
amylase, rennin, pepsinogen
done
clear
B)
maltase, pepsinogen, rennin
done
clear
C)
nuclease, pepsinogen, lipase
done
clear
D)
pepsinogen, lipase, rennin
done
clear
View Answer play_arrow
When a neuron is in resting state, i.e., not conducting any impulse, the axonal membrane is:
A)
Comparatively more permeable of \[{{K}^{\text{+}}}\] ions and nearly impermeable to \[N{{a}^{+}}\] ions
done
clear
B)
Comparatively more permeable to \[N{{a}^{+}}\] ions and nearly impermeable to \[{{K}^{\text{+}}}\] ions
done
clear
C)
Equally permeable to both \[N{{a}^{+}}\,and\,\,{{K}^{\text{+}}}\] ions
done
clear
D)
Impermeable to both \[N{{a}^{+}}\,and\,\,{{K}^{\text{+}}}\] ions
done
clear
View Answer play_arrow
The must abundant intracellular cation is:
A)
\[N{{a}^{+}}\]
done
clear
B)
Ca
done
clear
C)
\[{{H}^{+}}\]
done
clear
D)
\[{{K}^{+}}\]
done
clear
View Answer play_arrow
Which of the following regions of the brain is incorrectly paired with its function?
A)
Cerebrum - calculation and contemplation
done
clear
B)
Medulla oblongata - homeostatic control
done
clear
C)
Cerebellum - language comprehension
done
clear
D)
Corpus callosum - communication between the left and right cerebral cortices
done
clear
View Answer play_arrow
Which one of the following pairs is incorrectly matched?
A)
Glucagon - Beta cells (source)
done
clear
B)
Somatostatin - Delta cells (source)
done
clear
C)
Corpus luteum - Relaxin (secretion)
done
clear
D)
Insulin - Diabetes mellitus (disease)
done
clear
View Answer play_arrow
Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside is (mostly in the nucleus)?
A)
Somatostatin, oxytocin
done
clear
B)
Cortisol, testosterone
done
clear
C)
Insulin, glucagon
done
clear
D)
Thyroxin, insulin
done
clear
View Answer play_arrow
Which one of the following hormones is not involved in sugar metabolism?
A)
Glucagon
done
clear
B)
Cortisone
done
clear
C)
Aldosterone
done
clear
D)
Insulin
done
clear
View Answer play_arrow
A drupe develops in:
A)
Tomato
done
clear
B)
Mango
done
clear
C)
Wheat
done
clear
D)
Pea
done
clear
View Answer play_arrow
Function of filiform apparatus is to:
A)
Recognize the suitable pollen at stigma
done
clear
B)
Stimulate division of generative cell
done
clear
C)
Producer nectar
done
clear
D)
Guide the entry of pollen tube
done
clear
View Answer play_arrow
Filiform apparatus is characteristic feature of:
A)
Synergids
done
clear
B)
Generative cell
done
clear
C)
Nucellar embryo
done
clear
D)
Aleurone cell
done
clear
View Answer play_arrow
Which one of the following is not the function of placenta?
A)
It facilitates supply of oxygen and nutrients to embryo
done
clear
B)
It secretes estrogen
done
clear
C)
It facilitates removal of carbon dioxide and waste material from embryo
done
clear
D)
It secretes oxytocin during parturition
done
clear
View Answer play_arrow
Capacitation refers to changes in the:
A)
sperm after fertilization
done
clear
B)
sperm before fertilization
done
clear
C)
ovum before fertilization
done
clear
D)
ovum after fertilization
done
clear
View Answer play_arrow
The salivary gland chromosomes in the dipteran larva are useful in gene mapping because:
A)
They have endoreduplicated chromosomes
done
clear
B)
These are fused
done
clear
C)
These are easy to stain
done
clear
D)
These are much longer in size
done
clear
View Answer play_arrow
If a colour blind woman marries a normal visioned man, their sons will be:
A)
All normal visioned
done
clear
B)
One-half colour blind and one-half normal
done
clear
C)
Three-fourths colour blind and one-fourth normal
done
clear
D)
All colour blind
done
clear
View Answer play_arrow
Point mutation involves:
A)
Deletion
done
clear
B)
Insertion
done
clear
C)
Change in single base pair
done
clear
D)
Duplication
done
clear
View Answer play_arrow
A person with unknown blood group under ABO system has suffered much blood loss in a accident and needs immediate blood transfusion. His one friend who has a valid certificate of his own blood type offers for blood donation without delay. What would have been the type of blood group of the donor friend?
A)
Type A
done
clear
B)
Type B
done
clear
C)
Type AB
done
clear
D)
Type O
done
clear
View Answer play_arrow
If two persons with 'AB' blood group many and have sufficiently large number of children, these children could be classified as 'A' blood group: 'AB' blood group: 'B' blood group in \[1:2:\,\,1\] ratio. Modem technique of protein electrophoresis reveals presence of both 'A' and 'B' type proteins in ?AB? blood group individuals. This is an example of:
A)
Codominance
done
clear
B)
Incomplete dominance
done
clear
C)
Partial dominance
done
clear
D)
Complete dominance
done
clear
View Answer play_arrow
How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?
A)
Seven
done
clear
B)
Five
done
clear
C)
Six
done
clear
D)
Eight
done
clear
View Answer play_arrow