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A question asks to identify an acid or base only by taste. What is the correct exam-based response?

Answer and explanation

Correct answer: It is unsafe and indicators or pH paper should be used

The governing concept is safe laboratory identification of acids and bases. Unknown laboratory chemicals must never be tasted because even a small amount may be corrosive, poisonous, or otherwise harmful. Litmus, universal indicator, or pH paper can provide evidence without direct contact; a pH value also requires suitable measurement conditions. Therefore option A is the correct exam response. The remaining choices promote unsafe practice or make false claims about indicators and taste.

Related tags

Lab SafetyIndicatorsPh PaperAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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