What is the meaning of indicator??
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What is the meaning of indicator??
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Answer:
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.
Answer:
something that gives information or shows something; a sign is known as indicator
Explanation:
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