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In which pair can both substances show acidic nature?

Answer and explanation

Correct answer: Lemon juice and vinegar

The governing concept is the acidic nature of substances in water. Lemon juice contains citric acid, and vinegar contains acetic acid, so both can provide hydrogen ions and turn blue litmus red. Lime water, soap solution, baking soda, and washing soda are basic, while pure water and common salt solution are not an acidic pair. Therefore, option A is correct.

Related tags

Acidic-SubstancesLemonVinegarLitmusAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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