Question

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

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Answer

China rose indicator turns acidic solutions to dark pink (magenta) and basic solutions to green. Thus ‘A’ is an acidic solution and ‘B’ is a basic solution. No change in colour of solution ‘C’ indicates that ‘C’ is a neutral solution.

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