. The acid, known as king of chemicals, is
(a) sulphuric acid.
(b) nitric acid.
(c) hydrochloric acid.
(d) phosphoric acid.
Explanation: Sulphuric acid is used in the manufacture of fertilizers, paints, dyes, chemicals, plastics, synthetic fibers, detergents and explosive. Due to its wide variety of uses, it is known as king of chemicals.