Question

The number of substances in which china
rose extract changes color to magenta
from the given examples below
Vinegar, apple juice, tamarind water,
common salt solution, Caustic soda
solution, lime water​

Answer 1

Explanation:

China rose is a natural indicator which changes colour to determine the nature of an acid or a base. Lime juice is highly acidic with a pH of 2.5. A solution of China rose turns green in a basic solution and bright pink or magenta in an acidic solution. Hence, when treated with lime juice it turns into magenta colour.

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