MolSynapsequestion bank

MolSynapse / Question bank / IUPAC Nomenclature and Structural Isomerism / Counting structural isomers

JEE Main levelSingle correct optionDifficulty 2 of 3nm188

Counting every ring system that contains only carbon atoms, ring-substituted or not, the number of cycloalkane structural isomers of $C X_{5} H X_{10}$ (stereoisomers not counted) is

A5
B3
C4
D6

Answer: A

Cyclopentane, methylcyclobutane, ethylcyclopropane, 1,1-dimethylcyclopropane and 1,2-dimethylcyclopropane: 5.

Practice IUPAC Nomenclature and Structural Isomerism More on Counting structural isomers

Previous questionNext question

More questions on Counting structural isomers

Tertiary alcohols of formula C6H14O (structural isomers, open chain) number JEE Main level
How many open-chain alkenes (structural isomers only) are there with the formula C5H10? JEE Main level
The number of alkyne isomers (open-chain, structural) of C5H8 is JEE Main level
The number of primary amines (structural isomers) of formula C4H11N is JEE Main level
The number of secondary amines (structural isomers) of formula C4H11N is JEE Main level
Considering nitroalkanes R-NO2 and alkyl nitrites R-O-N=O together, the number of structural isomers of formula C3H7NO2 is JEE Main level