Question

Which law of thermodynamics states that energy can neither be created nor be destroyed, it can change from one to another?

• A. First law
• B. Second law
• C. Zero law
• D. None of these

Answer 1

Answer: (A)

First law

The Zeroth Law of thermodynamics- If two systems are in thermal equilibrium respectively with a third system, they must be in thermal equilibrium with each other.

First Law-Energy can neither be created nor be destroyed. It can change from one to another. The total energy of the universe remains constant.

Second Law- In a natural thermodynamic process the sum of the entropies of the interacting thermodynamic systems increases.

Third Law-The entropy of a system approaches a constant value as the temperature approaches absolute zero.

Hence option A is the right answer.