. An indicator which changes from blue to red in colour in acids is a


(a)          litmus solution.

(b)          methyl orange.

(c)           phenolphthalein.                                

(d)          turmeric powder.

Best Answer

(a)

Explanation: The litmus is a natural indicator. It is extracted from lichens. It has a mauve (purple) colour in distilled water. When it is added to an acidic solution, it turns into red.

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