JEE CHEMISTRY MCQ: HALOALKANES AND HALO ARENES

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Arrange the following alcohols in increasing order of their reactivity towards the reaction with

{HCl}

\left({CH}_3\right)_2 {CH}-{OH}(1),\left({CH}_3\right)_3 {C}-{OH}(2),\left({C}_6 {H}_5\right)_3 {C}-{OH} \text { (3) }

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Correct option: A

1 < 2 < 3

Option A (

1 < 2 < 3

) is correct because the reactivity towards HCl follows the stability of the carbocation formed, with triphenyl carbocation being the most stable due to resonance.

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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: