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Vanilla extract is what type of indicator?

Answer and explanation

Correct answer: Olfactory indicator

Vanilla extract is classified as an olfactory indicator because its smell can be used to distinguish acidic and basic conditions. The defining principle is detection through odour, not through a colour change or an electrical measurement. Thus option A is correct. Metallic, electrical, and hardness indicators describe unrelated properties and do not explain vanilla’s use in acid–base testing.

Related tags

ScienceClass10Acids-Bases-SaltsVanillaOlfactory-IndicatorAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And Behaviour

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