The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.

Question: Gas based fertiliser plants use
[A].

natural gas as a source of hydrogen.

[B].

natural gas as heating medium.

[C].

coal gas as a source of hydrogen.

[D].

coal gas as heating medium.

Answer: Option A

Explanation:

No answer description available for this question.