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Classification of Indicators

Which of the ...

Question

Which of the following is used as acid-base indicator?

A

Potato

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B

Tomato

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C

Turmeric

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D

Dry litmus

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Solution

The correct option is C Turmeric
Turmeric is yellow in acidic and neutral solutions; is bright red in basic solutions. Hence, it is a acid-base indicator.

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Acid turn blue litmus red and bases turn red litmus blue.
By looking at the above information, which of the following conclusions is true -

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