Give reason - Why : School bells are made of metals.

Give reason - Why : Gold is found in the free state in nature.

Give reasons why copper is used to make hot water tank and not steel (an alloy of iron).

Give reasons why the aromatic amines are weaker bases than aliphatic amines.

Give reason - Why : Galvanised iron particles are protected from rusting even if the zinc coating is broken.

Give reason why does a dry cell become dead after long time even if has not been used?

Why S-block elements are called alkali metals.

Give reasons why carbon is tetravalent.