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MHT CET202013 Oct 2020Morning ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which among the following oxides of nitrogen is brown coloured gas?

Options

  1. AN ₂ O ₅
  2. BN ₂ O ₃
  3. CNO ₂
  4. DN ₂ O ₄

Correct answer

C. NO ₂

Step-by-step solution

Nitrogen dioxide is a dark reddish brown gas and dinitrogen tetroxide is a colorless gas. When the equilibrium is shifted to the left, as written, the amount of nitrogen dioxide increases, the amount of dinitrogen tetroxide decreases and the color of the tube darkens.

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