Which of the following is NOT formed when a mixture of methyl bromide and n-propyl bromide is treated with…

Which of the following is NOT formed when a mixture of methyl bromide and n-propyl bromide is treated with sodium metal in dry ether?
  1. Butane
  2. Propane
  3. Ethane
  4. Hexane

Solution

$\begin{gathered} \mathrm{CH}_3-\mathrm{Br}+\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{Br} \underset{\text { dry ether }}{\longrightarrow} \mathrm{CH}_3-\mathrm{CH}_3 \text { ethane } \\ \qquad \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_3 \text { n-hexan } \\ \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_3 \text { n-butane } \end{gathered}$ Thus, propane is not formed.

Asked in: MHT CET 2021 (21 Sep Shift 2)

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