Name one metal and one non-metal that are found in a liquid state at room temperature.

Which process occurs at the cathode during the process of electrolysis?

Galvanisation is a method of protecting:

Which of the following metals is a poor conductor of heat and electricity?

Give the formulae of the stable binary compounds that would be formed by the combination of the following pairs of elements:
$(a)$ $Mg$ and $N_{2}$
$(b)$ $Li$ and $O_{2}$
$(c)$ $Al$ and $Cl_{2}$
$(d)$ $K$ and $O_{2}$

From amongst the metals sodium,calcium,aluminium,copper and magnesium,name the metal:
$(i)$ which reacts with water only on boiling,and
$(ii)$ another which does not react even with steam.