Question

If an indicator changes colour with a base, it does not change colour with an avid

Answer 1

Answer:

Only (iv) All indicators do not change colour with acids as well as bases, e.g. turmeric changes its colour to pink with base but it remains yellow with acid. ... There are some indicators which changes colour with both acid and base, e.g. methyl orange, litmus, thus statement (ii) and (iii) are also incorrect.

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Explanation: