Question

$1-$Bromopentane on boiling with alcoholic potassium hydroxide gives:

• A. Pentan$-1-ol$
• B. Pentan$-2-ol$
• C. pent$-1-ene$
• D. pent$-2-ene$

Answer 1

The correct option is C pent$-1-ene$

When halo alkaline is treated with conc.alcoholic solution of KOH, a molecule of hydrogen halide is eliminated to form alkene. The eliminated hydrogen atom comes from B-carbon atom, so it is called B-elimination reaction. Most highly substituted alkene is major product .