Question

Assertion: The increase in internal energy `(DeltaE)` for the vaporisation of 1 mole of water at 1 atm and `373K` is zero.
Reason: For all isothermal processes `DeltaE=0` .
A. If both ther assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both the assertion and reason are true but reason is not the correct explantion of the assertion.
C. If the assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer 1

Correct Answer - B
The assertion that the increase in internal energy for the vaporisation of 1 mole of water at 1 atm and `373K` is zero is true because for all isothermal process internal energy is zero.