配套习题- 硬水和软水 -【青果学院】

1/5单选题

难度：

1.下列物质可以用来区分硬水和软水的是

A	活性炭
B	食盐水
C	酒精
D	肥皂水

正确答案：RA==

55So6IKl55qC5rC05LiO5rC05qC35re35ZCI77yM6Iul5rOh5rKr5aSa44CB5rWu5rij5bCR77yM5YiZ5Li66L2v5rC077yM5Y+N5LmL5YiZ5Li656Gs5rC044CC

2/5单选题

难度：

2.将硬水中某些可溶性钙、镁化合物除去时，可以降低水的硬度．为达到此目的，某小组同学设计了下列四种方法，你认为其中可行的是

A	静置
B	过滤
C	蒸馏
D	加入稀盐酸

正确答案：Qw==

56Gs5rC06L2v5YyW55qE5pa55rOV5pyJ77ya6JK46aaP5ZKM54Wu5rK477yM5bCG56Gs5rC05Lit55qE6ZKZ56a75a2Q44CB6ZWB56a75a2Q6L2s5YyW5Li65rKJ5reA6Zmk5Y6777yO

3/5单选题

难度：

3.下列有关硬水的叙述，不正确的是

A	硬水中含有较多可溶性钙、镁化合物
B	硬水中不含或含较少可溶性钙、镁化合物
C	硬水易生水垢，与肥皂作用不易起泡沫
D	硬水可以软化为软水

正确答案：Qg==

QeOAgeehrOawtOaYr+aMh+WQq+aciei+g+WkmumSmeOAgemVgeemu+WtkOeahOawtO+8jOato+ehru+8mzxicj5C44CB56Gs5rC05piv5oyH5ZCr5pyJ6L6D5aSa6ZKZ44CB6ZWB56a75a2Q55qE5rC077yM5LiN5ZCr5oiW5ZCr6L6D5bCR5piv6ZSZ6K+v55qE77ybPGJyPkPjgIHljLrliIbnoazmsLTlkozova/msLTnmoTmlrnms5XmmK/vvJrnlKjogqXnmoLmsLTvvIzliqDlhaXogqXnmoLmsLTvvIzms6HmsqvlpJrnmoTmmK/ova/msLTvvIzms6HmsqvlsJHnmoTmmK/noazmsLTvvIzmraPnoa7vvJs8YnI+ROOAgemZjeS9juawtOeahOehrOW6pueahOaWueazleaYr++8muWKoOeDreeFruayuOOAgeiSuOmmj++8jOato+ehru+8mzxicj7mlYXpgIlC

4/5单选题

难度：

4.通过下列操作可以使硬水软化的是

A	蒸馏
B	活性炭吸附
C	加入肥皂水
D	过滤

正确答案：QQ==

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

5/5单选题

难度：

5.下列生活经验中，正确的是

A	用硬水洗涤衣服，既能节省肥皂，也能洗净衣服
B	为了节约用水，农业和园林的浇灌改为喷灌和滴灌
C	长期饮用市面上的纯净水对人体有益无害
D	锅炉用水不管软水、硬水都可以

正确答案：Qg==

5Zug5Li656Gs5rC05Lit5ZCr5pyJ6L6D5aSa55qE5Y+v5rq25oCn6ZKZ6ZWB5YyW5ZCI54mp77yM55So5a6D5rSX5rak6KGj5pyN77yM5pei5rWq6LS56IKl55qC77yM5Lmf5rSX5LiN5YeA6KGj5pyN77yOPGJyPumVv+acn+mlrueUqOW4gumdouS4iueahOe6r+WHgOawtOS8muS9v+S6uue8uuWwkeW+rumHj+WFg+e0oO+8jOWvueS6uuS9k+acieWus++8jjxicj7plIXngonnlKjnoazmsLTkvJrnu5PmsLTlnqLvvIzml7bpl7Tplb/kuobvvIzkvJrmtarotLnnh4PmlpnvvIznlJroh7PlvJXotbfniIbngrjnjrDosaHvvIzlupTor6XnlKjova/msLTvvI48YnI+5pWF6YCJQg==