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Turmeric becomes reddish-brown in contact with what type of substance?

Answer and explanation

Correct answer: Basic substance

Turmeric contains a natural indicator substance, mainly curcumin. In its usual yellow form it changes to reddish-brown when it contacts a basic or alkaline substance, such as a soap solution. This colour change indicates basicity, so option B is correct. Acidic and neutral substances do not normally produce this reddish-brown turmeric test, and sugar is not the relevant chemical category.

Related tags

TurmericNatural IndicatorBaseAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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