Question

You have been provided three tsetse tube one of these test tube contain distilled water and other two contain anjaan an acidic solution respectively.if u are only given blue litmus paper how will u identify the contents of each test tube

Answer 1

I will take the blue litmus paper and dip it first in distilled water and then dip it successively in the two unknown test tubes.

Answer 2

Explanation:

If the colour of red litmus does not change then it is acid. If the colour of red litmus changes to blue then it is base. If there is slight change in the colour of red litmus (such as purple) then it is distilled water.