Which of the following reaction(s) can be used for the preparation of alkyl halides?

Which of the following reaction(s) can be used for the preparation of alkyl halides?
anh.ZnCl₂
(I)CH₃CH₂OH + HCl →
(II)CH₃CH₂OH + HCl →
(III)(CH₃)₃COH + HCl →
(IV)(CH₃)₂CHOH + HCl →

Options

(a) (I) and (II) only
(b) (IV) only
(c) (III) and (IV) only
(d) (I), (III) and (IV) only

Correct Answer:

(I), (III) and (IV) only

Explanation:

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  • In 1 and 4 due to presence of Lucas reagent alcohols gives alkyl halides and in 3 one it. Follows sn1 reaction

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