Question

Which of the following is incorrect regarding the first law of thermodynamics?

• A. It is not applicable to any cycle process
• B. It is a restatement of the principle of conservation of energy
• C. It introduces the concept of the internal energy
• D. It introduces the concept of the entropy

Answer 1

Answer: (A), (D)

The correct options are
A It is not applicable to any cycle process
D It introduces the concept of the entropy

The first law of thermodynamics states the principle of conservation of energy.

It introduces the concept of the internal energy. And it is applicable for any cycle.

Hence, $A$ and $D$ are the incorrect statements regarding the first law of thermodynamics.