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Q.

What is the main use of phenolphthalein?

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a

To measure the concentration of a solution

b

To measure the temperature of a solution

c

To detect pH

d

To measure the density of a solution

answer is A.

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Detailed Solution

Phenolphthalein is mainly used as an acid-base indicator to detect the presence of acids and bases in solution. It turns pink in the presence of a base and colourless in the presence of an acid.

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