Question

What can a universal indicator indicate?
(i) Whether a solution is acidic.
(ii) Whether a solution is basic.
(iii) The pH of the solution.
(iv) Whether a base is strong or weak.
(v) Whether an acid is strong or weak.

• A. (i), (ii)
• B. (iii), (iv), (v)
• C. (i), (ii), (iii)
• D. (i), (ii), (iii), (iv), (v)

Answer 1

The correct option is D

(i), (ii), (iii), (iv), (v)

A universal indicator is a mixture of dyes which can change colour over a wide range of pH values. Hence they can indicate whether a solution is acidic or basic and how strong is the acid or the base.