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JEE CHEMISTRY MCQ: HALOALKANES AND HALO ARENES

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Ammonolysis of alkyl halides followed by the treatment with

NaOH

solution can be used to prepare primary, secondary and tertiary amines. The purpose of

NaOH

in the reaction is

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Correct option: C

to remove acidic impurities

Option C is correct because NaOH is a base and is used to neutralize the acidic impurities (HX) formed during the ammonolysis of alkyl halides.

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An alkyl halide reacts with metallic sodium in dry ether. The reaction is known as : In electrophilic substitution reaction of chlorobenzene, the chloro group: Which of the followings statements is/are incorrect? Polymerization of alkenes takes place through Assertion (A): The boiling points of alkyl halides decrease in the order:

RI > {R B r} > {R C I} > {R F}

.

Reason (R): The boiling points of alkyl chlorides, bromides and iodides are considerably higher than that of the hydrocarbon of comparable molecular mass. Friedel-Craft’s reaction of bromobenzene with methyl iodide gives: