Discussion
You are provided with China rose indicator.
In the first test tube, you add two drops of solution A and observe no change in colour of the solution.
In the second test tube, you add two drops of solution B and get green colour.
In the third test tube, you add two drops of solution C and get magenta (dark pink) colour.
Identify the nature of solutions A, B and C.
Answer: C
The solutions are A - Neutral; B - Basic; C - Acidic.
China rose (hibiscus) indicator turns acidic solutions dark pink (magenta) and basic solutions green, and it does not change colour in a neutral solution.
So solution A, which caused no change, is neutral; B, which turned green, is basic; and C, which turned magenta, is acidic. The other options mix up which colour goes with acids and which with bases.
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