Assertion(A): Thermodynamic properties are macroscopic in nature.
Reason(R): When a gas expands into a vacuum, the work done by it is zero.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Subtopic: Thermodynamics' Properties and process | First Law of Thermodynamics |