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:

(A), (B) and (D) only

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