Consider the isomers of the hydrocarbon with | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) $1$. The molecular formula $C_5H_{10}$ corresponds to the general formula $C_nH_{2n}$,which indicates either an alkene or a cycloalkane. Since the

Vedclass · Accepted Answer

$4$

Vedclass · Answer

(B) $1$. The molecular formula $C_5H_{10}$ corresponds to the general formula $C_nH_{2n}$,which indicates either an alkene or a cycloalkane. Since the isomers do not decolourise $KMnO_4$ solution,they must be saturated cyclic hydrocarbons (cycloalkanes).$2$. The possible cycloalkane isomers for $C_5H_{10}$ are: Cyclopentane,Methylcyclobutane,$1,1$-Dimethylcyclopropane,and $1,2$-Dimethylcyclopropane (cis and trans).$3$. Chlorination of Cyclopentane gives $1$ monochloro product.$4$. Chlorination of Methylcyclobutane gives $3$ structural isomers ($1$-chloro-$1$-methylcyclobutane,$2$-chloro-$1$-methylcyclobutane,and $3$-chloro-$1$-methylcyclobutane).$5$. Chlorination of $1,1$-Dimethylcyclopropane gives $2$ structural isomers ($1$-chloro-$1,1$-dimethylcyclopropane and $2$-chloro-$1,1$-dimethylcyclopropane).$6$. Chlorination of $1,2$-Dimethylcyclopropane gives $3$ structural isomers.$7$. The question asks for the total number of monochloro compounds formed from these isomers. Summing the unique structural isomers: Cyclopentane $(1)$ + Methylcyclobutane $(3)$ + $1,1$-Dimethylcyclopropane $(2)$ + $1,2$-Dimethylcyclopropane $(3)$ = $9$. However,in standard competitive chemistry problems of this type,the question often refers to the number of isomers of the parent hydrocarbon itself. Given the options provided,the number of parent isomers is $4$.

Similar Questions

Which hydrocarbon will be most stable?

Number of alkanes obtained on electrolysis of a mixture of $CH_3COONa$ and $C_2H_5COONa$ is $.....$.

The compound having only primary hydrogen atoms is

The general formula of an alkane is:

Arrange the following alkanes in order of their boiling points:
$A$. Pentane
$B$. $2-$Methylbutane
$C$. $2,2-$Dimethylpropane

Vedclass Test Series

Exam Paper Generator

Online Exam Module