distinguish between indicators and universal indicators
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A device providing specific information on the state or condition of something in particular is called indicators.
A mixture of dyes that changes colour gradually over a range of pH and is used (especially as indicator paper) in testing for acids and alkalis is called universal indicators.
A mixture of dyes that changes colour gradually over a range of pH and is used (especially as indicator paper) in testing for acids and alkalis is called universal indicators.
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