Thermal Properties of Matter

The change from solid state to vapour state without passing through the liquid state is called

"The rate of loss of heat $-dQ/dt$ of the body is directly proportional to the temperature difference of the body and surroundings". This statement is

Temperature and Heat are

Water is used as a coolant because

What is the work equivalent of 100 calories of heat ?

In which of the following process convection does not take place primarily?

The coefficient of thermal conductivity of a metal rod depends on its

If the two temperatures on Fahrenheit scale differ by 54°F, then the difference in temperature on the Celsius scale is

Calorie is defined as the amount of heat required to raise the temperature of 1 g of water by 1$^\circ$C and it is defined under which of the following conditions?

Thermal capacity of 40 g of aluminum (s = 0.2cal /g K) is

Ideal gas equation strictly obeys gas laws under all condition of

The two ends of a rod of length ' $x$ ' and uniform cross-sectional area ' $A$ ' are kept at temperatures ' $\mathrm{T}_{1}$ ' and ' $\mathrm{T}_{2}{ }^{\prime}$ respectively $\left(\mathrm{T}_{1} > \mathrm{T}_{2}\right)$. If the rate of heat transfer is ' $\mathrm{Q} / \mathrm{t}$ ', through the rod in steady state, then the coefficient of thermal conductivity ' K ' is

The latent heat of vaporisation of a substance is always

Maximum density of $H_{2}O$ is at the temperature

A metallic bar of coefficient of linear expansion ${10}^{-5}K^{-1}$ is heated from $0^{\circ}$ to ${100}^{\circ}C$. The percentage increase in its length is