Carbon monoxide cab be prepared in the laboratory by the action of conc. `H_(2)SO_(4)` on

Conc. H_(2)SO_(4) is not

Carbon monoxide is prepared by

Carbon monoxide is prepared by

Assertion (A) : Dihydrogen is prepared in the laboratory by the action of conc H_2SO_4 on granular zinc. Reason (R) : Pure hydrogen can be obtained by the action of water on sodium hydride.

Assertion (A) : Dihydrogen is prepared in the laboratory by the action of conc H_2SO_4 on granular zinc. Reason (R) : Pure hydrogen can be obtained by the action of water on sodium hydride.

What is the action of conc. H_2SO_4 on sulfur?

Hydrogen can be prepared by the action of dil. H_(2)SO_(4) on