All alkalis are bases but why are all bases not alkalis?
Answer and explanation
Correct answer: Because all bases do not dissolve in water
An alkali is defined as a base that is soluble in water. Therefore, every alkali is a base, but a base that is insoluble or only sparingly soluble in water is not classified as an alkali. This makes option A correct. Bases can react with acids to form salt and water, so option C is false. Bases are not all acids, and many bases produce ions in aqueous solution, so options B and D are also incorrect.
Frequently asked questions
What is the correct answer to this question?
Because all bases do not dissolve in water
Why is this the correct answer?
An alkali is defined as a base that is soluble in water. Therefore, every alkali is a base, but a base that is insoluble or only sparingly soluble in water is not classified as an alkali. This makes option A correct. Bases can react with acids to form salt and water, so option C is false. Bases are not all acids, and many bases produce ions in aqueous solution, so options B and D are also incorrect.
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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