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Per NCERT §9.4.2, dehalogenation of vicinal dihalide with alcoholic KOH gives which class of compound?
AAlkyne (after 2 HX losses)
BAlkene only after one HX
CAlcohol after substitution
DAlkyl halide after one elim
Answer & Solution
Correct answer: A. Alkyne (after 2 HX losses)
NCERT §9.4.2: two successive eliminations from a vicinal dihalide give first an alkenyl halide and then an alkyne.
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