Question

In electrolysis of water- name the gas collected at cathode and anode amd whi is volume of one gas collected at one electrode is double of another

Answer 1

Cathode - Hydrogen gas
Anode - Oxygen
The volume of hydrogen is more than that of water because water is H2O.

Answer 2

When electric current is passed through water , it decomposes to give hydrogen gas and oxygen gas. II) The volume of hydrogen gas collected at cathode is more than volume of oxygen gas at anode because water is made up of 2 parts of hydrogen and 1 part of oxygen by volume.