With reference to the elimination reaction of alkyl halides, the correct statements are;
(A) Zaitsev rule predicts the major product in dehydrohalogenation reaction.
(B) Grignard's reagent is prepared under perfectly anhydrous conditions.
(C) Alkyl halides on reaction with aqueous KOH forms an eliminated product but with alcoholic KOH forms a substituted product.
(D) Alkyl halides on reaction with aqueous KOH forms a substituted product but with alcoholic KOH forms an eliminated product.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A), (B) and (D) only
Let’s check each statement carefully:
(A) Zaitsev’s rule predicts the major product in dehydrohalogenation reaction Correct
(B) Grignard reagent is prepared under perfectly anhydrous conditions Correct
(C) Alkyl halides with aqueous KOH give substitution, and with alcoholic KOH give elimination
→ This statement is incorrect (it is reversed).
(D) Alkyl halides with aqueous KOH form substituted product, and with alcoholic KOH form eliminated product Correct