NEET Chemistry States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव NEET PYQ-States Of Matter

If a gas expands at constant temperature, it indicates that [AIPMT (S) 2008]

A) kinetic energy-of molecules decreases

B) pressure of the gas increases

C) kinetic energy of molecules remains the same

D) number of the molecules of gas increases

Correct Answer: C

Solution :

Key Idea: \[KE=\frac{3}{2}RT\]

\[KE\propto T\]

Here, the temperature of gas remains constant, hence kinetic energy of molecules remains the same.