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.
Frequently asked questions
What is the correct answer to this question?
It is unsafe and indicators or pH paper should be used
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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