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JEE CHEMISTRY MCQ: HALOALKANES AND HALO ARENES
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Assertion : - 2-Bromo butane on reaction with alcoholic mainly gives 2-butene.
Reason : - The hydrogen on carbon is more acidic than hydrogen on carbon.
Reason : - The hydrogen on carbon is more acidic than hydrogen on carbon.
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Correct option: C
If Assertion is True but the Reason is False.
Option C is correct because the assertion is true, but the reason is false. 2-butene is the major product due to Zaitsev's rule, but the acidity of hydrogens is not the reason.
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An alkyl halide reacts with metallic sodium in dry ether. The reaction is known as :
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Assertion (A): The boiling points of alkyl halides decrease in the order:
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.
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: