Question

Statement 1: During the electrolysis of water, the volume of gas obtained at anode is more than the volume of gas obtained at cathode.

Statement 2: Hydrogen is obtained at cathode and oxygen is obtained at anode during the electrolysis of water.

• A. Both statements are correct
• B. Both statements are incorrect
• C. Statement 1 is correct but statement 2 is incorrect
• D. Statement 1 is incorrect but statement 2 is correct

Answer 1

The correct option is D Statement 1 is incorrect but statement 2 is correct

The chemical formula of water is ${\text{H}}_2\text{O}$. During its electrolysis, hydrogen and oxygen gases are collected at cathode and anode respectively.

The volume of hydrogen gas collected at cathode is double the volume of the oxygen gas collected at the anode which is according to the following reaction:

$2H_{2}O\left(l\right)\to 2H_2\left(g\right)+O_2\left(g\right)$

Hence, statement 1 is incorrect but statement 2 is correct.