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When universal indicator is added to a solution, the colour appears green. What is the nature of the solution?

Answer and explanation

Correct answer: Neutral

The governing concept is the colour scale of a universal indicator. It displays different colours over a range of pH values: acidic solutions are generally red to orange, strongly basic solutions are blue to violet, and green is associated with a pH close to 7. Thus the observed green colour indicates that the solution is approximately neutral. It does not prove that the solution is metallic or strongly acidic/basic, so option B is correct.

Related tags

Universal-IndicatorNeutral-SolutionPhAcid-BaseAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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