Question

what are indicators??give example​

Answer 1

Indicators are chemical compounds that tell us whether a substance is acidic or basic by changing its colour. When added to an acidic solution or a basic solution, indicators change their colour and this change in colour is different for the acids and bases. The indicator thus help us to decide whether a given solution is acidic or basic in nature.

The indicators that are obtained from plants are known as natural indicators.

Examples – Turmeric, china rosa, red cabbage and grape juice.

Answer 2

Answer:

The substances which change their color or odour when placed in acidic or basic medium accordingly.

Example - Litmus is a natural indicator , Lichens, Red cabbage, Clove is an olfactory indicator.