Why is the aqueous solution of non-metal oxides often acidic?
Answer and explanation
Correct answer: They can form acidic substances with water
The governing concept is the acidic nature of many non-metal oxides. When a suitable non-metal oxide reacts with water, it can form an oxyacid; for example, CO2 + H2O ⇌ H2CO3. The resulting solution contains acidic species and may turn blue litmus red. Therefore option A is correct. Options B and C reverse the usual behaviour, and D is too absolute because some non-metal oxides dissolve or react with water.
Frequently asked questions
What is the correct answer to this question?
They can form acidic substances with water
Why is this the correct answer?
The governing concept is the acidic nature of many non-metal oxides. When a suitable non-metal oxide reacts with water, it can form an oxyacid; for example, CO2 + H2O ⇌ H2CO3. The resulting solution contains acidic species and may turn blue litmus red. Therefore option A is correct. Options B and C reverse the usual behaviour, and D is too absolute because some non-metal oxides dissolve or react with water.
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.
