MCQ
In engines water is used as coolant, because ......
  • A
    It good conductor of heat energy
  • B
    It has low density
  • It has high specific heat
  • D
    It's bad conductor of heat energy

Answer

Correct option: C.
It has high specific heat
c
(c)

Because it absorbs and gives off heat readily or it has high specific heat.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Consider a planet in some solar system which has a mass double the mass of the earth and density equal to the average density of the earth. An object weighing W on the earth will weight.

  1. W

  2. 2W

  3. $\frac{\text{W}}{2}$

  4. $2^{\frac{1}{3}}$ W at the planet.

An ideal gas has molecules with $5\,$ degrees of freedom. The ratio of specific heats at constant pressure $(C_p)$ and at constant volume $(C_v)$ is
A particle is confined to rotate in a circular path decreasing linear speed, then which of the following is correct?
By properly combining two prisms made of different materials, it is possible to:
  1. Have dispersion without average deviation.
  2. Have deviation without dispersion.
  3. Have both dispersion and average deviation.
  4. Have neither dispersion nor average deviation.
A particle is found to be at rest when seen from a frame S1 and moving with a constant velocity when seen from another frame S2​. Mark out the possible options.
It is found that if a neutron suffers an elastic collinear collision with deuterium at rest, fractional loss of its energy is $p_d $ ; while for its similar collision with carbon nucleus at rest, fractional loss of energy is $P_c$. The values of $P_d$ and $P_c$ are respectively
A rigid body is rotating with variable angular velocity $(a - bt)$ at any instant of time $ t.$ The total angle subtended by it before coming to rest will be ($a$ and $b$ are constants)
Water drops fall at regular intervals from a tap which is $5\,\,m$ above the ground. The third drop is leaving the tap at the instant the first drop touches the ground. How far above the ground is the second drop at that instant.........$m$
A person is standing on an open car moving with a constant velocity of $30\,\,m/s$  on a straight horizontal road. The man throws a ball in the vertically upward direction and it returns to the person after the car has moved $240\,\,m.$  The speed and the angle of projection
If particle is executing simple harmonic motion with time period $T$, then the time period of its total mechanical energy is ...........