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一、选择题(每小题只有一个选项符合题意)1.下列说法不正确的是()A.分子式为C3H8与C6H14的两种有机物一定互为同系物B.具有相同通式的有机物不一定互为同系物C.两个相邻同系物的相对分子质量在数值上一定相差14D.分子组成相差一个或几个CH2原子团的化合物必定互为同系物2.某有
First, the multiple-choice questions (only one option per problem is consistent with the meaning of the question) 1. The following statement is incorrect () A. Molecular formula C3H8 and C6H14 two organic substances must be homologous B. Organic compounds with the same general formula is not Must be mutually homologous C. The relative molecular masses of two contiguous congeners must differ in value by 14D. Compounds whose molecular composition differs by one or more CH2 radicals must be homologs.