Very pure hydrogen `(99.9%)` can be made by which of the following processes ?

Options

A. Reaction of methane with steam
B. Mixing natural hydrocarbons of high molecular weight
C. Electrolysis of water
D. Reaction of salts like hydrides with water

Answer

D

Explanation

`NaH + H_(2)O to underset("very pure Hydrogen")(NaOH + H_(2))`