Mention three areas in which $H_2SO_4$ plays an important role.

(N/A) Sulphuric acid $(H_2SO_4)$ is a vital industrial chemical with numerous applications. Three important areas of its use are:
$(i)$ Fertilizer industry: It is used in the production of fertilizers such as ammonium sulphate and calcium superphosphate.
$(ii)$ Chemical manufacturing: It is used in the manufacture of pigments,paints,and synthetic detergents.
$(iii)$ Energy storage: It is used as an electrolyte in lead-acid storage batteries.