Dehydrohalogenation of alkylhalide is carried out in presence of:
Correct answer: C. Alcoholic KOH
- A. Zn dust
- B. Conc. H2SO4
- C. Alcoholic KOH
- D. Aqueous KOH.
Explanation
Dehydrohalogenation of an alkyl halide is carried out in the presence of alcoholic KOH (potassium hydroxide dissolved in alcohol). This reaction is a type of elimination reaction where a hydrogen halide (H-X) is removed from the alkyl halide, leaving behind a double bond. Therefore, option c is correct.
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About Elimination Reactions
Elimination reactions remove a leaving group and a hydrogen atom from adjacent carbon atoms to form an alkene. The topic covers dehydrohalogenation of alkyl halides, E1 and E2 mechanisms, the role of base, solvent and substrate structure, and Zaitsev orientation, which is often contrasted with substitution.
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