Question

Hydrogen gas is used in
(i) water treatment
(ii) de-greasing metals
(iii) paper making (iv) making ammonia ​

Answer 1

$\Large {\orange{\bigstar}} \ {\underline{\green{\textsf{\textbf{Answer :-}}}}}$

$→ \tt{ \: Hydrogen\: Gas\: is\: used\: in} \\ \tt\pink{\underline{ \:(ii)\: de-greasing \:metals.}}$

$\\ \\ \large\bold\red{\overbrace{\underbrace \blue{Hope \: This \: Helps \:You}}}$