JEE CHEMISTRY MCQ: HALOALKANES AND HALO ARENES

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The statement that is not true about ozone is

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Correct option: A

in the stratosphere, CFCs release chlorine free radicals

Cl,

which reacts with

{O_3}

to give chlorine dioxide radicals

Option A (in the stratosphere, CFCs release chlorine free radicals

Cl,

which reacts with

{O_3}

to give chlorine dioxide radicals) is correct because the reaction of chlorine free radicals with ozone produces chlorine monoxide radicals, not chlorine dioxide radicals.

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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: