Why are all bases not alkalis?
Answer and explanation
Correct answer: Because all bases are not soluble in water
The key distinction is solubility. Every alkali is a base, but only a base that dissolves in water is called an alkali. Bases such as copper(II) hydroxide are poorly soluble, so they are not classified as alkalis. Hence option A is correct. Bases can form salts with acids and contain or produce ions, so options B, C, and D are scientifically incorrect.
Frequently asked questions
What is the correct answer to this question?
Because all bases are not soluble in water
Why is this the correct answer?
The key distinction is solubility. Every alkali is a base, but only a base that dissolves in water is called an alkali. Bases such as copper(II) hydroxide are poorly soluble, so they are not classified as alkalis. Hence option A is correct. Bases can form salts with acids and contain or produce ions, so options B, C, and D are scientifically 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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