Question

Which of the following statements is true about the electrolysis of water?

• A. Oxygen gas is released at the cathode.
• B. Hydrogen gas is released at the anode.
• C. Electrolysis of water is not possible as distilled water is a poor conductor of electricity.
• D. The volume of hydrogen gas released is double the volume of oxygen gas.

Answer 1

The correct option is D The volume of hydrogen gas released is double the volume of oxygen gas.

Oxygen gas is released at the anode.
Hydrogen gas is released at the cathode.
Electrolysis of water is done by adding a little amount of electrolyte to it. This makes it more conducting.
The volume of hydrogen gas released is double the volume of oxygen gas.