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JEE Main levelOne or more correct optionsDifficulty 2 of 3nm042

In arranging the prefixes of a substituted alkane alphabetically (IUPAC alphanumerical order), which of the following statements is/are correct?

  1. Atert-Butyl is alphabetized under b, because the italicized prefix tert is ignored.
  2. BIsopropyl is alphabetized under i, because iso is part of the name.
  3. Csec-Butyl is alphabetized under s.
  4. DDimethyl is alphabetized under d.

Answer: A, B

Italicized prefixes such as sec- and tert- are ignored, so sec-butyl and tert-butyl are both filed under b. Iso, neo and the like are part of the name, so isopropyl is filed under i. Multiplying prefixes di-, tri-, tetra- are ignored for simple substituents, so dimethyl is filed under m. Statements 1 and 3 are correct; statements 2 and 4 are wrong.
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