Question

What are Indicators?​

Answer 1

Explanation:

Chemical indicator:

Any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution.

For Ex:.

☞ The substance called methyl yellow, which imparts a yellow colour to an alkaline solution.

Answer 2

Explanation:

Hi...

Chemical indicators are those indicators which provide a clear change in the state , colour , smell in a substance with seen through proof ...

Litmus paper changes colour to red in acids and blue in basic solution. This can be considered as an example of indicators