Question 7 of 190
\[
\begin{array}{|l|p{6cm}|l|p{4cm}|}
\hline \textbf{LIST-I} & & \textbf{LIST-II} & \\
\hline A. & \text{Pressure varies inversely with volume of an ideal gas.} & I. & \text{Adiabatic process} \\
\hline B. & \text{Heat absorbed goes partly to increase internal energy and partly to do work.} & II. & \text{Isochoric process} \\
\hline C. & \text{Heat is neither absorbed nor released by a system.} & III. & \text{Isothermal process} \\
\hline D. & \text{No work is done on or by a gas.} & IV. & \text{Isobaric process} \\
\hline
\end{array}
\]
Show answer and solution
Answer: (A) A-III, B-IV, C-I, D-II
$\begin{aligned}
& \mathrm{A} \rightarrow \mathrm{P} \propto \frac{1}{\mathrm{~V}} \\
& \Rightarrow \mathrm{PV}=\text { constant } \\
& \Rightarrow \mathrm{nRT}=\text { const. } \Rightarrow \mathrm{T}=\text { const. }
\end{aligned}$
Hence Isothermal III
B IV
[only isobaric]
Adiabatic
II w Isochoric
III, IV, I, II
& \mathrm{A} \rightarrow \mathrm{P} \propto \frac{1}{\mathrm{~V}} \\
& \Rightarrow \mathrm{PV}=\text { constant } \\
& \Rightarrow \mathrm{nRT}=\text { const. } \Rightarrow \mathrm{T}=\text { const. }
\end{aligned}$
Hence Isothermal III
B IV
[only isobaric]
Adiabatic
II w Isochoric
III, IV, I, II