Air is
always a compound
always a mixture
a compound in pollution-free zones
a mixture in industrial zones
Which of the following labeled points in the figure given above indicate the unstable state of an object?
Point A only
Point B only
Points A and C
Points B and D
Which one among the following is an electrochemical cell that cannot be charged?
Electrolytic cell
Storage cell
Primary cell
Fuel cell
Which one among the following is the correct order of power consumption for the light of equal intensity?
CFL tube < Fluorescent tube < Incandescent bulb < Light emitting diode
Light emitting diode < CFL tube < Fluorescent tube < Incandescent bulb
CFL tube < Fluorescent tube < Light emitting diode < Incandescent bulb
Incandescent bulb < Light emitting diode < Fluorescent tube < CFL tube
One feels heavier in a lift when the lift
is going down steadily
just begins to go up
is moving up steadily
descends freely
A swinging pendulum has its maximum acceleration at
the bottom of the swing
the two extremities of the swing
every point on the swing
no particular portion of the pendulum
Which one among the following statements about thermal conductivity is correct?
Steel> Wood> Water
Steel> Water> Wood
Water> Steel> Wood
Water> Wood > Steel
B.
Steel> Water> Wood
The process of nuclear fusion in the sun requires
very high temperature and very high pressure
low temperature and high pressure
high temperature and low pressure
very high temperature and no pressure
Which one among the following is the true representation of (i) variable DC potential (ii) rheostat and (iii) AC ammeter respectively?
In India, distribution of electricity for domestic purpose is done in the form of
220 V; 50 Hz
110 V; 60 Hz
220 V; 60 Hz
110 V; 50 Hz