Question 3

Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed
(a) Yellow in both acid and base.
(b) Yellow in acid and red in base.
(c) Pink in acid and yellow in base.
(d) Red in acid and blue in base.

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Solution

Turmeric is a natural indicator. Turmeric paste turns pink in an acidic solution and red in a basic solution.

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A solution changes the colour of turmeric indicator from yellow to red. The solution is
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Natural Indicators

Standard VII Chemistry

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Question 3 Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed (a) Yellow in both acid and base. (b) Yellow in acid and red in base. (c) Pink in acid and yellow in base. (d) Red in acid and blue in base.

Turmeric is a natural indicator. Turmeric paste turns pink in an acidic solution and red in a basic solution.

Question 3

Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed
(a) Yellow in both acid and base.
(b) Yellow in acid and red in base.
(c) Pink in acid and yellow in base.
(d) Red in acid and blue in base.