MCQ
Nitrogen gas is absorbed by
- ACalcium hydroxide
- BFerrous sulphate
- ✓Calcium carbide
- DAluminium carbide
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$N{H_4}^ + + {S^{ - 2}} \rightleftharpoons N{H_3} + H{S^ - }$

$N, O, F, C, S i$
Choose the correct answer from the options given below: