Which of the following indicators is red in acid solution but blue in basic solution?

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Litmus

Methyl orange

Red cabbage extract

None of the above

answer is A.

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Detailed Solution

Litmus paper turns red in acid and blue in base.
Indicators are used to detect the nature of acidic and basic solutions. Litmus is a natural indicator which is widely used in laboratories for the detection of acidic and basic properties. An acidic solution is detected if litmus paper turns red and a basic solution is detected when litmus paper turns blue.

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