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If a solution has pH 3, what effect will it have on blue litmus paper?

Answer and explanation

Correct answer: It will turn red

The pH scale indicates the acidic or basic nature of a solution: pH 7 is neutral, values below 7 are acidic, and values above 7 are basic. Since pH 3 is below 7, this solution is acidic. Acids change blue litmus to red, so option A is correct. Options B, C, and D do not describe the standard blue-litmus response to an acidic solution.

Related tags

ScienceClass10PhAcidLitmusAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And Behaviour

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