Question

Assertion : Acid-base indicators are dyes or mixtures of dyes which are used to indicate
the presence of acids and bases.
Reason : Acidic nature of a substance is due to the formation of H*(aq) ions in solution
Formation of OH- (aq) ions in solution is responsible for the basic nature of a substance​

Answer 1

Answer:

Red litmus paper is red in an acid solution and turns blue in a basic solution. ... (b) Substances do not show their acidic properties without.