Chemistry - STRUCTURAL ISOMERISM Question with Solution | TestHub

Methylamine and dimethylamine have different formulae, so A is false. The five constitutional isomers C₄H₈ are but-1-ene, but-2-ene, 2-methylpropene, cyclobutane and methylcyclopropane. The two terminal alkynes C₅H₈ are pent-1-yne and 3-methylbut-1-yne. Acetic acid and methyl formate share C₂H₄O₂ but have acid and ester groups. Therefore B,C,D.