Calorie is the unit of

In which mode of transfer of heat, molecules pass on heat energy to neighbouring molecules without actually moving from their positions?

A device in which the loss of heat due to conduction, convection and radiation is minimized in

The fastest mode of heat transfer is ___________.

During day time, air blows from________________to_____________

Liquids and gases are generally _________ conductors of heat.

The fixed temperature at which matter changes state from solid to liquid is called ___________.

What is the heat in joules required to raise the temperature of 25 grams of water from 0ºC to 100ºC? What is the heat in Calories?
(Specific heat of water = 4.18 J/gºC)

How much heat energy is required to change 2 kg of ice at 0ºC into water at 20ºC? (Specific latent heat of fusion of water = 3,34,000J/kg, Specific heat capacity of water = 4200JKg^-1K^-1).

What is specific heat capacity?

Define thermal capacity.

Explain convection in daily life.

How can you experimentally prove that water is a bad conductor of heat? How is it possible to heat water easily while cooking.