What is an indicator?

A substance which helps to determine the nature of a substance is called an indicator. In class 10 we study about acid -base indicator which help us to identify whether the given substance is acid or basic

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Gaurav Seth 5 years ago

Indicators: Indicators are those substances which tell us whether a substance is acidic or basic by change in colour. For e.g., litmus solution. Olfactory indicators: Those substances whose odour changes in acidic or basic media are called lfactory indicators. For e.g., clove, vanilla, onion.

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