第十二章:IVA族元素:碳和硅
Quiz
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Chemistry
•
10th Grade
•
Practice Problem
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5 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
为什么石墨可作为润滑剂,金刚石却不能?
因为石墨拥有可移动的碳原子
因为石墨拥有可移动的电子
因为石墨拥有六边形片状晶体结构
因为石墨层与层之间存在较弱的范德华力
2.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
除去CO2气体中混有少量的CO杂质的最好的办法是______?
加氧气入气体中
把气体通过NaOH溶液
把气体通入灼热的碳粉末
把气体通入灼热的CuO粉末
3.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
当一块金属钠暴露于空气中数星期后,其表面生成主要含有_____的白色物质。
金属钠
碳酸钠
碳酸氢钠
氢氧化钠
4.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
要除去CO2气体中所含有的少量HCl杂质,最好的方法是将混合气体通过下列哪一种溶液?
氨水
碳酸钠溶液
饱和石灰水
饱和碳酸氢钙溶液
5.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
在高温条件的存在下,能与水蒸气反应生成水煤气的是_____。
I 碳
II 甲烷
III 一氧化碳
IV 二氧化碳
I, II
I, III
I, IV
III, IV
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