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JEE Main levelSingle correct optionDifficulty 2 of 3si067

The degree of unsaturation of is

  1. A5
  2. B3
  3. C4
  4. D6

Answer: A

Nitrogen adds 1/2 each: . For example 4-nitrotoluene has a ring (1 ring + 3 C=C = 4) and the N=O of the nitro group (1).
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