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JEE Chemistry · Medium

p-Block Elements: Oxides of nitrogen MCQ

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Oxides of nitrogenMediumQuestion 760004

Question

Which oxide of nitrogen is used as a laughing gas (anaesthetic)?
  1. A
    N₂O
    Correct
  2. B
    NO
  3. C
    NO₂
  4. D
    N₂O₅

Correct answer

N₂O

Explanation

N₂O (nitrous oxide) is used as a mild anaesthetic (laughing gas). It decomposes at body temperature to release O₂. NO is a toxic radical, NO₂ is brown and toxic, N₂O₅ is the anhydride of HNO₃.

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