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.

AcademicChemistryNCERTClass 7

‘A’ is acidic solution, as China rose solution turns dark pink in acids.

‘B’ is a basic solution, as China rose solution turns green in basic solution.

‘C’ is a neutral solution, hence, there is no change in colour of China rose solution.

raja
Updated on 10-Oct-2022 13:21:28

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