Question

indicator gives Examples
what
are​

Answer 1

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An indicator is a substance that changes its colour in acidic and basic medium.An indicator shows one colour in acidic medium and different colour in basic medium so that they are called indicators. eg:-Litmus , turmeric....

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Answer 2

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. An example is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution.

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