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JEE Main levelSingle correct optionDifficulty 2 of 3nm189

The number of primary amines (structural isomers) of formula is

  1. A2
  2. B3
  3. C4
  4. D5

Answer: C

Primary amines are R-NH2 with R = butyl; there are four butyl groups, so butan-1-amine, butan-2-amine, 2-methylpropan-1-amine and 2-methylpropan-2-amine: 4.
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