A system is……………..if it cannot exchange matter and energy with the surroundings.

A thermally isolated gaseous system can exchange energy with the surroundings. The mode of energy may be

The system in which there is no exchange of matter, work, or energy from the surroundings is

Closed system can exchage (with surroundings)

In………………..process, no heat is exchanged between the system and the surroundings.

A process in which the system does not exchange heat with the surroundings is known as

Assertion : During an adiabatic process, heat energy is not exchanged between system and its surroundings. Reason : The temperature of a gas increases when it undergoes andn adiabatic expansion.

Assertion:- To drink chilled juice, we use ice cubes of 0^(@)C . Reason:- During adiabatic expansion, work is done by the gas using a part of internal energy and no heat exchange takes place the system and the surrounding.

A system is said to be in ...... equilibrium when the system and the surroundings are at the same temperature.

Assertion:- During adiabatic expansion of an ideal gas, temperature falls but entropy remains constant. Reason:- During adiabatic expansion, work is done by the gas using a part of internal energy and no heat exchange teakes place the system and the surrounding.