What is a water-soluble base called?
Answer and explanation
Correct answer: Alkali
The governing concept is the distinction between bases and alkalis. A base is a substance that can neutralise an acid, but some bases do not dissolve in water. An alkali is specifically a base that dissolves in water and produces hydroxide ions in aqueous solution. Therefore, the water-soluble base in the question is an alkali, so option B is correct. Acid, salt and indicator are different classes of substances.
Frequently asked questions
What is the correct answer to this question?
Alkali
Why is this the correct answer?
The governing concept is the distinction between bases and alkalis. A base is a substance that can neutralise an acid, but some bases do not dissolve in water. An alkali is specifically a base that dissolves in water and produces hydroxide ions in aqueous solution. Therefore, the water-soluble base in the question is an alkali, so option B is correct. Acid, salt and indicator are different classes of substances.
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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