Statement -1: Entropy change in reversible adiabatic expansion of an ideal gas is zero.
Statement-2: The increase in entropy due to volume increase just compensates the decrease in entropy due to fall in temperature.

This question has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement-I : Entropy change in reversible adiabatic expansion of an ideal is zero. Statement-II : The increase in entropy due to volume increase just compensate the decrease in entropy due to fall in temperature.

How does entropy change with increase in temperature,

Statement-1: The heat absorbed during the adiabatic expansion of an a ideal gas against vacuum is zero. Statement-2:The volume occupied by an ideal gas is zero.

The entropy change in the isothermal reversible expansion of 2 moles of an ideal gas from 10 to 100 L at 300 K is

Assertion : In free expansion of an ideal gas, the entropy increases. Reason : Entropy increases in all natural processes.

The entropy of a gas increases on its expansion . Why?