Question

Assertion: The internal energy of an ideal gas does not change during an isothermal process.
Reason: The decrease in volume of a gas is compensated by a corresponding increase in perssure, when its temp. is held constant.
A. If both, Assertion and Reason are true and Reason is the correct explanation of the Asserrion.
B. If both,Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. If Assertion is true but the Reason is false.
D. If both, Assertion and Reason are false.

Answer 1

Correct Answer - B
In isothermal process, temperature remains constant. Therfore, inernal energy of an ideal gas does not change-as it is dependent only of temperature- neither on pressure nor on volume. So the assertion is true but the reason is not a correct explanation of the assertion.