Copper is a good example for
Insulator
Semiconductor
Conductor
Both a and b
Freezing point of water
100 °C
0 °C
20 °C
50 °C
1 kcal =
4186 J
1000 J
41.86 J
418.6 J
The change of state from liquid to gas by absorption of heat is called
Vaporization
Liquefaction
Evaporation
Freezing
SI unit of specific latent heat is
J/kg
J/°C
J
Jkg
Which of the following is a good conductor?
Rubber
Plastic
Copper
Wood
The change of state from soild to liquid due to the absorption of heat at a constant temperature is
Fusion
Vaporisation
Pick out correct expression for heat capacity.
m x C
m2C
m/C
C/m
How much heat energy is liberated when 10 kg of water freezes to form ice at 0 °C?
336 x 104J
336 J
3360 J
33600 J
Water is used as a coolant because it
is easily available
is a good conductor
has high specific heat
is inexpensive
