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Which statement about indicators is the most correct?

Answer and explanation

Correct answer: Indicators can show a colour or smell change in acids and bases

The governing concept is that indicators are substances used to test the acidic or basic nature of a medium. Litmus and several other indicators show colour changes, while olfactory indicators show changes in smell. Thus option A gives the most complete correct statement. Indicators do not identify only metals, neutralise every solution, or cause a gas-to-solid conversion, so B, C, and D are false.

Related tags

IndicatorsLitmusOlfactory-IndicatorAcid-Base-TestingAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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