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Indicators

Why turmeric ...

Question

Why turmeric paper change it's colour when I pour a base?

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Solution

Turmeric is a natural indicator which can be used to test whether a given substance is acidic or basic in nature.

When we put drops of alkaline solution like NaOH or NaHCO3 solution on turmeric paper, It turns to brownish red in colour indicating the nature of solution as basic.

When an acid is poured on turmeric paper, there will not be any effect.

Conclusion :
Turmeric paper + acid = No change in colour
Turmeric paper + base= brownish red colour.

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Q. Sir/ ma'am pls help me by answering fast...it's really urgent

Which colour does turmeric indicator changes when ---
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Q. (a) What is an indicator? Name three common indicators.
(b) Name the acid-base indicator extracted from lichen.
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