Question

Neetu has two test tubes containing dilute hydrochloric acid and dilute sodium hydroxide solution, but they are not labeled.

Adding which of the following solutions to the test tubes will help her visually identify the acidic and basic solution?

(a) only vinegar

(b) only baking soda

(c) only sodium chloride

(d) either vinegar or sodium chloride

Answer 1

Correct answer is (b) only baking soda

Explanation: Adding only baking soda solutions to the test tubes will help her visually identify the acidic and basic solution. pH indicators can be used to visually identify acidic and basic solutions.