Question

Inert gases should be present for what?

(a) Prevents heat

(b) Prevents explosion

(c) High energy

(d) All of the mentioned

The question was asked in a national level competition.

This is a very interesting question from Hydrogen : Properties topic in section Hydrogenation of Unit Processes

Answer 1

The correct choice is (b) Prevents explosion

Best explanation: All apparatus and lines should be carefully purged by an inert gas such as nitrogen, carbon dioxide, or flue gases not containing oxygen, before hydrogen is admitted to prevent any chances for explosion.