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A student tried to identify an unknown solution by touching it in the laboratory. Why is this method wrong?

Answer and explanation

Correct answer: Because acids and bases may be corrosive or harmful

Unknown laboratory solutions must never be identified by touching them. They may contain acids, bases, or other harmful chemicals that can irritate, burn, or damage skin. A suitable indicator, test method, protective equipment, and teacher’s instructions should be used instead. Option A is correct; the other choices make scientifically false claims about safety, pH, or metal formation.

Related tags

Lab-SafetyUnknown-SolutionAcid-BaseIndicatorClass10AcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And Behaviour

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