Chemistry - Nomenclature Question with Solution | TestHub

Correct pairs: (1) phenol,(4) furan,(5) salicylic acid,(6) glycerol. (2) draws trans fumaric acid rather than cis maleic acid; (3) is pyridine rather than pyrrole. The source treats (7) 'carbamoyl benzene' as incorrect under principal-amide suffix naming, for which benzamide or benzenecarboxamide is used; the carbamoyl prefix is used when a senior group exists. Under that rule x=4,y=3 and (x-y)/x=0.25. Accepting the last label merely as a descriptive structural alias would alter the count, so the naming convention is explicit.