What is the general nature of metal oxides?
Answer and explanation
Correct answer: Basic
Most metal oxides are basic because they react with acids to form salt and water. For example, copper(II) oxide reacts with hydrochloric acid: CuO + 2HCl → CuCl2 + H2O. Some metal oxides, such as aluminium oxide and zinc oxide, are amphoteric and react with both acids and bases, so “generally” is important. Nevertheless, the broad school-level classification is basic, making option B correct.
Frequently asked questions
What is the correct answer to this question?
Basic
Why is this the correct answer?
Most metal oxides are basic because they react with acids to form salt and water. For example, copper(II) oxide reacts with hydrochloric acid: CuO + 2HCl → CuCl2 + H2O. Some metal oxides, such as aluminium oxide and zinc oxide, are amphoteric and react with both acids and bases, so “generally” is important. Nevertheless, the broad school-level classification is basic, making option B correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Metals and Non-metals.
