题干

四氯乙烯对环境有一定的危害,干洗衣服的干洗剂主要成分是四氯乙烯;家用不粘锅内侧涂覆物质的主要成分是聚四氟乙烯。下列关于四氯乙烯和聚四氟乙烯的叙述中正确的是( )

A:它们都属于纯净物

B:它们都能使酸性高锰酸钾溶液褪色

C:它们的分子中都不含氢原子

D:它们都可由乙烯只发生加成反应得到

上一题 下一题 0.0难度 选择题 更新时间:2017-10-14 08:02:26

答案(点此获取答案解析)

C

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