What is the process of separating hydrogen from water called?

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RRB NTPC - 2015

General Science

What is the process of separating hydrogen from water called?

This question was previously asked in

RRB NTPC 2015 CBT 1 Question Paper PDF (2-Apr-2016) (Shift 3)

Electrolysis

Osmosis

Ozonation

Oxidation

The correct answer is

Electrolysis

Electrolysis is correct.

When an electric current is passed through water containing a little acid or salt, water decomposes: hydrogen gas collects at the cathode and oxygen gas at the anode, in a 2 : 1 volume ratio.

This decomposition of a compound by electricity is called electrolysis.

Osmosis is the movement of a solvent through a semi-permeable membrane, ozonation is treatment with ozone, and oxidation is the gain of oxygen or loss of electrons.

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