Turmeric becomes reddish-brown in contact with what type of substance?
Answer and explanation
Correct answer: Basic substance
Turmeric is a natural acid–base indicator. Its yellow pigment changes to reddish-brown when it comes in contact with a basic or alkaline substance. Therefore, option B is correct. Acidic and neutral substances generally do not produce this characteristic reddish-brown change, while sugar is not classified as the required alkaline substance in this test.
Frequently asked questions
What is the correct answer to this question?
Basic substance
Why is this the correct answer?
Turmeric is a natural acid–base indicator. Its yellow pigment changes to reddish-brown when it comes in contact with a basic or alkaline substance. Therefore, option B is correct. Acidic and neutral substances generally do not produce this characteristic reddish-brown change, while sugar is not classified as the required alkaline substance in this test.
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.
