(A) To prepare $2-$methylpropane by the Wurtz reaction,we need to couple a methyl group with an isopropyl group. Therefore,the haloalkanes required ar

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chloromethane and $2-$chloropropane

(A) To prepare $2-$methylpropane by the Wurtz reaction,we need to couple a methyl group with an isopropyl group. Therefore,the haloalkanes required are chloromethane $(CH_3Cl)$ and $2-$chloropropane $(CH_3CHClCH_3)$.The reaction is as follows:$CH_3Cl + CH_3CHClCH_3 + 2Na \xrightarrow{\text{dry ether}} CH_3CH(CH_3)CH_3 + 2NaCl$Thus,the correct option is $A$.

Class 12 Chemistry Haloalkanes and Haloarenes Preparation of Haloalkanes

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$2-$methylpropane can be prepared by the Wurtz reaction. The haloalkanes taken along with metallic sodium and dry ether are:

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A
chloromethane and $2-$chloropropane
B
chloroethane and chloromethane
C
chloroethane and $1-$chloropropane
D
chloromethane and $1-$chloropropane

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Haloalkanes and Haloarenes

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Preparation of Haloalkanes

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The products $A$ and $B$ obtained in the following reactions,respectively,are
$3 ROH + PCl_3 \rightarrow 3 RCl + A$
$ROH + PCl_5 \rightarrow RCl + HCl + B$

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The major product in the following reaction sequence is:

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How can you obtain iodoethane from ethanol when no other iodine containing reagent except $NaI$ is available in the laboratory?

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$2-$methylpropane can be prepared by the Wurtz reaction. The haloalkanes taken along with metallic sodium and dry ether are:

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The products $A$ and $B$ obtained in the following reactions,respectively,are$3 ROH + PCl_3 \rightarrow 3 RCl + A$$ROH + PCl_5 \rightarrow RCl + HCl + B$

The major product in the following reaction sequence is:

How can you obtain iodoethane from ethanol when no other iodine containing reagent except $NaI$ is available in the laboratory?

How many pairs of enantiomers are obtained from the monochlorination of $2,3-$dimethylbutane?

Describe the preparation of alkyl halides from alcohols.

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The products $A$ and $B$ obtained in the following reactions,respectively,are
$3 ROH + PCl_3 \rightarrow 3 RCl + A$
$ROH + PCl_5 \rightarrow RCl + HCl + B$