Indicator that turns red or pink in acidic medium is ______________________.

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Solution

An indicator is a substance that changes its color in an acidic and basic medium.
Methyl orange is a pH indicator that is frequently used in acid-base titrations.
In acidic solution methyl orange gives red or pink color but in basic solution, it gives yellow color.
Therefore, the indicator that turns red or pink in an acidic medium is methyl orange.

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A solution turns phenolphthalein indicator pink. The most likely pH of this solution will be :

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