1.

Which of the following reaction(s) can be used for the preparation of alkyl halides? (I) CH_(3)CH_(2)OH+HCl overset("anhyd. "ZnCl_(2))to (II) CH_(3)CH_(2)OH+HCl to (III) (CH_(3))_(3)COH+HCl to (IV) (CH_(3))_(2)CHOH+HCl overset(ZnCl_(2))to

Answer»

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

Solution :`1^(@) and 2^(@)` alcohols react with HCl only in PRESENCE of anhyd. `ZnCl_(2)` as catalyst while in case of `3^(@)` alcohols, `ZnCl_(2)` is not required. Thus, reaction (II) cannot be USED to prepares ALKYL halides. While all other reactions can be used. in other WORDS, option (d) is CORRECT.


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