Question

From the given diagram of electrolysis of water choose the correct statement.

• A. 2 volumes of oxygen at cathode, 2 volumes of hydrogen at anode.
• B. 2 volumes of oxygen at anode and 2 volume of hydrogen at cathode.
• C. 1 volume of oxygen at cathode and 1 volume of hydrogen at anode.
• D. 2 volumes of hydrogen at cathode and 1 volume of oxygen at anode.

Answer 1

The correct option is D

2 volumes of hydrogen at cathode and 1 volume of oxygen at anode.

From the above diagram of electrolysis of water, we can draw two inferences:

1) On passing electricity water is decomposed to form 2 volumes of hydrogen at cathode and 1 volume of oxygen at anode.

2) Water is a compound made up of hydrogen and oxygen.