Natural acid base indicator — task. Chemistry CBSE Live product, Class 7 (2026-27).

Analyse the questions given below and select the correct answer:

1. What is a natural acid-base indicator?

A substance obtained from plants or flowers that shows colour change in acids and bases
A substance that always stays colourless
A chemical that changes colour in acid or base
A chemical that changes colour only in base

2. Which pigment in china rose petals acts as a natural pH indicator?

Did you find an error?

1. Natural acid base indicator