In which type of solution does turmeric become reddish-brown?
Answer and explanation
Correct answer: Basic solution
Turmeric contains a natural indicator substance called curcumin. In an alkaline or basic medium, curcumin changes from its usual yellow colour to reddish-brown. Thus, when turmeric paper or turmeric paste contacts a base, the reddish-brown colour appears, so option B is correct. Acidic, neutral, and ordinary sugar solutions do not normally produce this characteristic turmeric change.
Frequently asked questions
What is the correct answer to this question?
Basic solution
Why is this the correct answer?
Turmeric contains a natural indicator substance called curcumin. In an alkaline or basic medium, curcumin changes from its usual yellow colour to reddish-brown. Thus, when turmeric paper or turmeric paste contacts a base, the reddish-brown colour appears, so option B is correct. Acidic, neutral, and ordinary sugar solutions do not normally produce this characteristic turmeric change.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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