B M Sharma Solutions for Chapter: Thermodynamics, Exercise 2: DPP

The specific heat of a gas in an isothermal process is _____.

A thermally insulated container is divided into two parts by a screen. In one part, the pressure and temperature are $P$ and $T$ for an ideal gas filled. In the second part, it is vacuum. If now a small hole is created in the screen, then the temperature of the gas will _____.

When an ideal gas in a cylinder was compressed isothermally by a piston, the work done on the gas was found to be $1.5\times {10}^4 \mathrm{J}$. During this process, amount of heat flowed out from the gas is _____ $\times {10}^3$ $\mathrm{cal}$.

In adiabatic expansion, $\mathrm{∆}U$ is _____.

A gas at NTP is suddenly compressed to one-fourth of its original volume. If $\gamma$ is supposed to be $\frac{3}{2},$ then the final pressure is _____ $\mathrm{atm}$.

An ideal gas at $27 °\mathrm{C}$ is compressed adiabatically to $\frac{8}{27}$ of its original volume. If $\gamma =\frac{5}{3},$ then the rise in temperature is _____ $\mathrm{K}$.

Two identical samples of a gas are allowed to expand (i) isothermally, ii) adiabatically. Work done is_____ (less/more/equal) in the isothermal process

During the adiabatic expansion of $2$ moles of a gas, the internal energy of the gas is found to decrease by $2 \mathrm{J}.$ The work done during the process on the gas will be equal to _____ J.