Question

Which of the following solutions will not change the colour of blue litmus paper to red?

I. Acid solution

II. Basic solution

III. Common salt solution

Select the correct answer using the codes given below.

(a) I and III

(b) II and III

(c) Only I

(d) Only II

Answer 1

(b) II and III

Base and salts do not interact with red litmus. Base turns red litmus to blue.