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JEE CHEMISTRY MCQ: HALOALKANES AND HALO ARENES
1
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Understanding
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Which of the followings statements is/are incorrect?
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Correct option: B
The compound which rotate light to left is called dextrorotatory and that towards right is called laevorotatory
The correct answer is 'The compound which rotate light to left is called dextrorotatory and that towards right is called laevorotatory' because the definitions are reversed.
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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:
Polymerization of alkenes takes place through
Assertion (A): The boiling points of alkyl halides decrease in the order:
.
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: In order to get ethanethiol from the reagent used is:
.
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: In order to get ethanethiol from the reagent used is: