Question

If a gas is expands at constant temperature then:

• A. no. of gaseous molecule decreases
• B. kinetic energy of molecule decreases
• C. kinetic energy remain same
• D. kinetic increases

Answer 1

The correct option is C kinetic energy remain same

If a gas expands at constant temperature, them pressure of the gas decrease and number of molecules of gas remains same as amount of gas is constant. And kinetic energy of molecules will remain same as the temperature is constant.

So option $C$ is correct.