Give reasons for the following: (i) Metals can be given different shapes according to our needs. (ii) Hydrogen is not evolved when a metal reacts with nitric acid.
(a) Metals can be given different shapes according to our needs because metals are malleable (i.e. metals can be hammered into thin sheets) and ductile (i.e. metals can be drawn into thin wires). (b) Hydrogen is not evolved when a metal reacts with nitric acid because nitric acid is a strong oxidising agent
