An ionic compound is generally a

During the electrolysis of $NaCl$ solution,$H_2$ gas is liberated at the cathode when a $Pt$ electrode is used,whereas sodium amalgam is formed when a $Hg$ cathode is used. What is the reason for this?

Name the processes from which chlorine is obtained as a by-product. What will happen if an aqueous solution of $NaCl$ is subjected to electrolysis?

In the industrial production of which of the following,molecular hydrogen is obtained as a byproduct?

Which metal is electro-deposited on iron surface to prevent rusting?

The cell used for the electrolysis of fused $NaCl$ is