Which of the following substances is basic in nature?
Answer and explanation
Correct answer: Soap solution
The governing concept is the behaviour of bases in aqueous solution. Soap solution is generally basic because soap contains salts of weak acids and strong bases; it can turn red litmus blue. Therefore option C is correct. Vinegar contains acetic acid, lemon juice contains citric acid, and tamarind juice contains organic acids, so these three substances are acidic rather than basic. The classification refers to their usual aqueous chemical nature.
Frequently asked questions
What is the correct answer to this question?
Soap solution
Why is this the correct answer?
The governing concept is the behaviour of bases in aqueous solution. Soap solution is generally basic because soap contains salts of weak acids and strong bases; it can turn red litmus blue. Therefore option C is correct. Vinegar contains acetic acid, lemon juice contains citric acid, and tamarind juice contains organic acids, so these three substances are acidic rather than basic. The classification refers to their usual aqueous chemical nature.
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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