Ravi has few acidic & basic solutions with him but he forgot to label the solutions. Which of the following can be used by him as an acid-base indicator?
(a) Vinegar
(b) Lime water
(c) Turmeric
(d) Baking soda
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Answer:
Turmeric
Explanation: Ravi can use turmeric as an acid-base indicator. Turmeric turns red when it is tested with bases and does not changes its colour when it is tested with Acids and neutral substances.
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