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.
This question appeared on the KMU Centralized Admission Test 2022 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Practise Alkyl Halides
458 free Alkyl Halides MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Elimination Reactions questions
KOH (alcoholic) + CH3 (CH3) 2 CH2Br (1), The reactants in the condition given will undergo:
When 2-Bromo-2-methyl propane undergoes unimolecular elimination reaction, the product obtained will be:
Dehydrahalogenation·of alkyl halide·is carried with:
Greater number of Alkyl groups on substrate favours:
Identify the correct statement related to substitution and elimination of alkyt halides: