Question

Choose the correct statement(s) regarding electrolysis of water from the options given below:

• A. The gas released at anode is hydrogen.
• B. The gas released at cathode is oxygen.
• C. The gas released at cathode burns with a pop sound.
• D. The gas released at anode supports combustion.

Answer 1

Answer: (C), (D)

The correct options are
C The gas released at cathode burns with a pop sound.
D The gas released at anode supports combustion.

The chemical formula of water is ${\text{H}}_2\text{O}$. During it's electrolysis, hydrogen is collected at cathode and oxygen is collected at anode. When a glowing splinter is brought near the hydrogen gas, it burns with a pop sound. When a glowing splinter is brought near the oxygen gas, it burns brightly as oxygen supports combustion.