Substance A reacts with oxygen to form an acidic oxide.
Substance B reacts with oxygen to form a basic oxide.
Oxides of A and B react with water to form X and Y respectively.
Which of the following statements are true?
A
A is a metal; B is a non-metal
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B
A is a non-metal; B is a metal
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C
X is a base; Y is an acid
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D
X is an acid; Y is a base
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Solution
The correct option is D X is an acid; Y is a base - Metals react with oxygen to form basic oxides, whereas non-metals react with oxygen to form acidic oxides.
Therefore, B is a metal and A is a non-metal.
- Acidic oxides react with water to form acids.
- Basic oxides react with water to form bases.
Therefore, X is an acid because A is a non-metal and Y is a base because B is a metal.