Statement-I: The increase in internal energy ($\Delta U$) for the vaporisation of one mole of water at 1 atm and 373 K is zero. Statement-$\mathrm{II}$: For all isothermal processes $\Delta U$ = 0.
- ABoth Statement-I and Statement-$\mathrm{II}$ are correct.
- BBoth Statement-I and Statement-$\mathrm{II}$ are incorrect.
- CStatement-I is correct and Statement-$\mathrm{II}$ is incorrect.
- DStatement-I is incorrect and Statement-$\mathrm{II}$ is correct.
✓ Correct answer: B
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