Which of the following processes can not be made reversible even under ideal condition of operation?

Question: Which of the following processes can not be made reversible even under ideal condition of operation?
[A].

Free expansion of a gas.

[B].

Compression of air in a compressor.

[C].

Expansion of steam in a turbine.

[D].

all (a), (b) & (c).

Answer: Option A

Explanation:

No answer description available for this question.