If a metal oxide reacts with an acid to form salt and water, what general nature of the metal oxide is proved?
Answer and explanation
Correct answer: Basic nature
The governing pattern is neutralisation: an acid reacting with a base produces salt and water. Metal oxides such as copper(II) oxide or magnesium oxide consume acid and form corresponding salts, for example CuO + 2HCl → CuCl₂ + H₂O. Since the oxide neutralises H⁺ ions, it behaves as a basic oxide. An acidic oxide would generally react with a base instead, and the other choices do not describe this chemical behaviour. Therefore option A is correct.
Frequently asked questions
What is the correct answer to this question?
Basic nature
Why is this the correct answer?
The governing pattern is neutralisation: an acid reacting with a base produces salt and water. Metal oxides such as copper(II) oxide or magnesium oxide consume acid and form corresponding salts, for example CuO + 2HCl → CuCl₂ + H₂O. Since the oxide neutralises H⁺ ions, it behaves as a basic oxide. An acidic oxide would generally react with a base instead, and the other choices do not describe this chemical behaviour. Therefore option A is correct.
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.
