
生活中的水
Authored by Foong Keet Yee
Chemistry
10th Grade
Used 64+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在下列四种情况下,水循环不够活跃的是
赤道附近
森林覆盖良好的水库区
印度洋海域
地表裸露的沙漠地区
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
吃火锅时,我们虽然没往锅内继续放盐,但汤越吃越咸,这是因为
汤的上部淡下面咸
汤内盐的质量分数随着水分的蒸发而增大
汤内锅底的盐没溶解
其他原因
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
可供人们利用的淡水资源是
冰川水和地下水
河流水的湖泊水
河流水和深层地下水
河流水、湖泊淡水和浅层地下淡水
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
关于水的组成说法正确的是
水是水元素组成
水是有氢气和氧气组成
水是由氢元素和氧元素组成
水的组成很复杂,至今没有明确的答案
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列物质中属于纯净物的是
自来水
海水
矿泉水
蒸馏水
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有关水的说法中不正确的是
水是一种最常用的溶剂
水分子是有氢分子和氧原子构成的
鉴别软水和硬水可以用肥皂水
农药、化肥的不合理施用,会造成水污染
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在电解水的实验中,
正极端会产生比较多气体
正极端会产生氢气
正极端比负极端的比例是1:2
负极端会产生氧气
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