Water is used as a coolant because it
is easily available
is a good conductor
has high specific heat
is inexpensive
Freezing point of water
100 °C
0 °C
20 °C
50 °C
The change of liquid into its gaseous state at any temperature below its boiling point is the
evaporation
liquefaction
vapourisation
fusion
The change of state from liquid to solid due to the release of heat is
Freezing
Vaporisation
Fusion
Liquefaction
SI unit of specific latent heat is
J/kg
J/°C
J
Jkg
The change of state from soild to liquid due to the absorption of heat at a constant temperature is
Evaporation
Pickout the correct expression.
Pick out correct expression for heat capacity.
m x C
m2C
m/C
C/m
Find out the correct expression.
Q = m x L
Q = m2L
Which of the following is slow process?
Sublimation
Boiling
Both a and b