Question 9 — How can natural indicators be prepared? - Questions at the end of the chapter - Chapter 2 Class 7 - Exploring Substances: Acidic, Basic, and Neutral

Last updated at August 16, 2026 by

Q9 (Easy): How can natural indicators be prepared? Explain by giving an example.

Answer:
We have studied that natural substances like flowers and vegetables can act as acid-base indicators . This is why we can prepare them at home.

  • Crush flower petals or vegetable pieces
  • Add hot water and let it soak
  • Filter the coloured liquid extract
  • Test with acids and bases
Preparing Red Rose Indicator Step 1 Crush red rose petals Step 2 Add hot water, wait Step 3 Filter the extract Natural indicator ready!
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