Question

Bholu, Dholu and their friend Golu were provided with a test tube, each containing China rose
solution which was pink in colour. Bholu added 2 drops of solution A in his test tube and got dark pink
colour. Dholu added 2 drops of solution B in his test tube and got green colour. Golu added drops of
solution C in his test tube but could not get any change in colour. Suggest the possible cause for the
variation in their results.

Answer 1

China rose is a natural indicator which changes acid to pink colour, base to green colour and neutral solutions do not show any changes.

So, the solution A is an acid, B is a base and C is neutral.

hope it helps :)