试题与答案

水是生命之源,下列有关水的说法错误的是 A.水是一种重要的溶剂 B.用肥皂水可以

题型:选择题

题目:

水是生命之源,下列有关水的说法错误的是

A.水是一种重要的溶剂

B.用肥皂水可以区分硬水和软水

C.生活中可以用煮沸的方法降低水的硬度

D.通过过滤可以除去水中所有的杂质

答案:

答案:D

题目分析:A、正确,水是生活中常用的,也是重要的溶剂;B、正确,肥皂水遇到硬水,产生较多浮渣,遇到软水,产生较多泡沫;C、正确,除煮沸外,蒸馏也是一种降低水硬度的有效方法,不过生活中不常用;D、错误,过滤只能除去水中的不溶性杂质。

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