Question

Hardening of oils is caused by

• A. $H_{2}$
• B. $N_{2}$
• C. $O_{2}$
• D. $CO_{2}$

Answer 1

Answer: (A)

$H_{2}$

Answer 2

$\text{Oil}(\text{unsaturated})\ + H_{2}\overset{\quad Ni\quad}{\rightarrow}\text{Fat }(\text{saturated})$