Draw graph of $\alpha _V$ temperature.

Why the density is changed of solid substances by increase in temperature ?

Give the value of coefficient of volume expansion at $0\,^oC$ for ideal gas.

''Anomalous expansion of water is blessing for living organisms in water''. Explain this statement. Explain Anomalous expansion of water.

A beaker of height $H$ is made up of a material whose coefficient of linear thermal expansion is $3\alpha $ . It is filled up to the brim by a liquid whose coefficient of thermal expansion is $\alpha $. If now the beaker along with its contents is uniformly heated through a small temperature $T$ the level of liquid will reduce by (given $\alpha  << 1$)