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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3nm164

Select the correct statements about the isomers of .

  1. Aexactly four of them are alcohols
  2. Bbutan-1-ol and butan-2-ol are chain isomers
  3. Cexactly three of them are ethers
  4. Dbutan-2-ol and diethyl ether are functional isomers

Answer: A, C, D

The set has 4 alcohols (butan-1-ol, butan-2-ol, 2-methylpropan-1-ol, 2-methylpropan-2-ol) and 3 ethers (diethyl, methyl propyl, methyl isopropyl). Alcohol versus ether is functional isomerism. Butan-1-ol and butan-2-ol share the same carbon skeleton and differ only in OH position, so they are position isomers, not chain isomers.
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