Question

The oil-hardening processes use which type of compounds?

(a) Long-chain acids

(b) Esters

(c) Saturates

(d) All of the mentioned

This question was addressed to me in a national level competition.

This is a very interesting question from Industrial Processes-II in section Hydrogenation of Unit Processes

Answer 1

Correct choice is (d) All of the mentioned

For explanation I would say: The oil-hardening processes use long-chain acids and esters and saturate only the olefinic linkages in the carbon chain; in the reductions to be described here, the carboxyl group (-COOH) is changed to an alcohol group (-CH20H), and the olefinic bonds in the chain mayor may not be reduced at the same time.