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NEET levelSingle correct optionDifficulty 1 of 3g3086

Dichlorocarbene, $: CCl X_{2}$ , is conveniently generated in the laboratory by treating

Achloromethane with $Cl X_{2}$ and light
Bchloroform with a strong base such as $KOH$ or $t - BuOK$
Cdichloromethane with $H X_{2} SO X_{4}$
Dcarbon tetrachloride with aqueous $HCl$

Answer: B

A strong base removes the proton of

CHCl X_{3}

to give

CCl X_{3} X^{-}

, which expels

Cl X^{-}

(alpha-elimination) to give

: CCl X_{2}

. The other reagent pairs do not produce a dichlorocarbene.

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