Statement-I: it is possible for both the pressure and volume of a monoatomic ideal gas of a given amount to change simultaneously without causing the internal energy of the gas to change.
Statement-2: The internal energy of an ideal gas of a given amount remains constant it temperature does not change. it is possible to have a process in which pressure and volume are changed such that temperature remains constant.

Options

A. Statement-1 is true, Statement-2: is true, Statement-2 is a correct explanation for Statement-1.
B. Statement-1 is true, Statement-2: is true, Statement-2 is NOT a correct explanation for Statement-1.
C. Statement-1 is true but statement-2 is false
D. Statement-1 is false, Statement-2 is true

Answer

A

Explanation

An isothermal process is an example to show the possibility "for both the pressure and volume of a monoatomic ideal gas to change simultaneously without causing the energy of the gas to change,". Hence statement-1 is true, statement-2 is true, Statement-2 is a correct explanation for statement 1.