Chemistry - Nomenclature Question with Solution | TestHub

All the given compounds share the same molecular formula ($C_5{H}_{10}$) and a degree of unsaturation ($DU=1$). The cyclic structures (like cyclopentane and its derivatives) contain only carbon-carbon single bonds, classifying them as saturated compounds. The open-chain structures contain a carbon-carbon double bond, classifying them as unsaturated compounds. Therefore, statement (C) "All are unsaturated compounds" is false, making it the correct choice for the incorrect statement.