Which statement best describes the general nature of metal oxides?
Answer and explanation
Correct answer: They usually form salt and water with acids
The governing concept is the basic nature of most metal oxides. A basic metal oxide reacts with an acid in a neutralisation reaction, producing a salt and water; for example, CuO + 2HCl → CuCl₂ + H₂O. Thus option A correctly describes their usual behaviour. Option B is wrong because metal oxides are not always acidic, while C and D have no chemical basis. Some metal oxides can be amphoteric, but that does not change the general rule.
Frequently asked questions
What is the correct answer to this question?
They usually form salt and water with acids
Why is this the correct answer?
The governing concept is the basic nature of most metal oxides. A basic metal oxide reacts with an acid in a neutralisation reaction, producing a salt and water; for example, CuO + 2HCl → CuCl₂ + H₂O. Thus option A correctly describes their usual behaviour. Option B is wrong because metal oxides are not always acidic, while C and D have no chemical basis. Some metal oxides can be amphoteric, but that does not change the general rule.
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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