Assertion (A): Non-metallic oxides are acidic in nature.
Reason (R): Carbon dioxide reacts with sodium hydroxide (a base) to produce a salt and water, behaving like an acid.
Generated by claude-sonnet-4-6 · 2026-06-26 01:03 · grounding rag
Model Answer
Answer: A
Both A and R are true and R is the correct explanation of A. Non-metallic oxides are acidic; CO₂ reacts with NaOH to form Na₂CO₃ (salt) and water, confirming its acidic nature.
Source: What you have learnt, Chapter 3
Explanation
- The textbook states: "Non-metals form oxides which are either acidic or neutral" — so Assertion A is true.
- CO₂ (a non-metallic oxide) reacting with NaOH (a base) to give a salt and water is a classic example of acidic behaviour — so Reason R is true.
- R directly explains why non-metallic oxides are called acidic (they react with bases like acids do), making R the correct explanation of A.
- Choose Option A.