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题文

下列有关胶体的叙述中不正确的是

A.淀粉溶胶中胶体微粒大小在1~100nm
B.用一束光照射氢氧化铁胶体,可以观察到一条光亮的通路
C.向沸腾的蒸馏水中加几滴FeCl3饱和溶液,继续煮沸至液体呈红褐色,停止加热可得氢氧化铁胶体
D.可以利用过滤来分离胶体粒子和溶液
科目 化学   题型 选择题   难度 较易
知识点: 分散系、胶体与溶液的概念及关系
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