The aqueous solution of a non-metal oxide turns blue litmus red. How can it react with a base?
Answer and explanation
Correct answer: By forming salt and water
Blue litmus turning red shows that the aqueous solution is acidic. Many non-metal oxides, such as carbon dioxide and sulphur dioxide, form acidic solutions in water and are called acidic oxides. An acidic oxide reacts with a base in a neutralisation reaction to produce salt and water; for example, CO₂ + 2NaOH → Na₂CO₃ + H₂O. Hence option A is correct.
Frequently asked questions
What is the correct answer to this question?
By forming salt and water
Why is this the correct answer?
Blue litmus turning red shows that the aqueous solution is acidic. Many non-metal oxides, such as carbon dioxide and sulphur dioxide, form acidic solutions in water and are called acidic oxides. An acidic oxide reacts with a base in a neutralisation reaction to produce salt and water; for example, CO₂ + 2NaOH → Na₂CO₃ + H₂O. Hence 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.
