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When dipped i...

Question

When dipped in a soap solution, the colour observed for a turmeric stain would be ______.

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Solution

Turmeric is a natural indicator. Its colour changes from yellow to red in basic medium.
Soaps are basic in nature. So when a turmeric stain is washed with a soap solution, the stain colour changes to red.

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Q. What would be the colour change observed when a turmeric stained cloth is washed with soap?

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When Shakti dropped yellow turmeric powder by mistake in a soap solution she observed the colour of turmeric powder changed to reddish orange. Give reason to her observation. Give example of two more chemicals which can change colour in soap solution

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Q. On washing with soap, a turmeric stain on the cloth turns to red because
A. soap solution is alkaline.
B. soap solution is acidic.
C. turmeric contains a natural indicator.
D. turmeric contain litmus.
Select the correct alternative.

Q. Assertion (A): Cloth stained with turmeric turns red on applying soap.

Reason (R): Turmeric changes its colour to red in a basic medium.

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