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NDA 1 2025 GAT, question 76

Topic: Chemistry

Q76

Which one of the following oxides is a neutral oxide?

  1. (a) COCOCorrect answer
  2. (b) CO2CO_{2}
  3. (c) Na2ONa_{2}O
  4. (d) MgOMgO

Solution.

Answer: (a) COCO

  1. Carbon monoxide is classified as a neutral oxide: it does not show the usual acid–base behaviour of acidic or basic oxides.
  2. Carbon dioxide is acidic, whereas sodium oxide and magnesium oxide are basic.
  3. “Neutral oxide” does not mean harmless.