Embibe Experts Solutions for Chapter: Thermal Properties of Matter, Exercise 5: Exercise (Conceptual Questions)

A piece of ice is floating in a jar containing water. When the ice melts, then the level of water :-

If two rods of lengths $L$ and $2L$ having coefficient of linear expansion $\alpha$ and $2\alpha$, respectively, are connected end-on-end, the average coefficient of linear expansion of the composite rod equals,

$2 \mathrm{kg}$ ice at $-20°\mathrm{C}$ is mixed with $5 \mathrm{kg}$ water at $20°\mathrm{C}$. Then final amount of water in the mixture would be;

(Given specific heat of ice $=0.5\mathrm{cal}/\mathrm{g}°\mathrm{C}$, specific heat of water $=1\mathrm{cal}/\mathrm{g}°\mathrm{C}$ and latent heat of fusion of ice $=80\mathrm{cal}/\mathrm{g}$)

The thermal capacity of any body is:

A piece of ice (heat capacity $=2100 \mathrm{J}{ \mathrm{kg}}^{-1}{{}^{\circ }\mathrm{C}}^{-1}$ and latent heat $=3.36\times {10}^5 \mathrm{J}{ \mathrm{kg}}^{-1}$) of mass $m$ grams is at $-5°\mathrm{C}$ at atmospheric pressure. It is given $420 \mathrm{J}$ of heat so that the ice starts melting. Finally when the ice-water mixture is in equilibrium, it is found that $1\mathrm{gm}$ of ice has melted. Assuming there is no other heat exchange in the process, the value of $m$ is :

Absolute zero temperature is one at which-

$22 \mathrm{g}$ of ${\mathrm{CO}}_2$ at $27 {}^{\circ }\mathrm{C}$ is mixed with $16 \mathrm{g}$ of ${\mathrm{O}}_2$ at $37{}^{\circ }\mathrm{C}$. The temperature of the mixture is:-

(At room temperature, degrees of freedom of ${\mathrm{CO}}_2=7$ and degrees of freedom of ${\mathrm{O}}_2=5$)

The adiabatic bulk modulus of a diatomic gas at atmospheric pressure is