本课配套习题挑战模式1/5
单选题
难度系数:
1.下列金属冶炼的反应原理错误的是
A: 2NaCl(熔融) 2Na + Cl2↑ |
B: MgO + H2 Mg + H2O |
C: Fe3O4 + 4CO 3Fe + 4CO2 |
D: 2HgO 2Hg + O2↑ |
一次做对,真牛!
+5奖励规则>
- 提示1:5Zyo6YeR5bGe5rS75Yqo5oCn6aG65bqP6KGo5Lit77yM5YmN6Z2i55qE5rS75rO86YeR5bGe6ZyA6KaB55So55S16Kej5rOV77yM5Lit6Ze055qE6YeR5bGe55So54Ot6L+Y5Y6f5rOV77yM5LiN5rS75rO855qE6YeR5bGe6YCC55So54Ot5YiG6Kej5rOV44CC
- 答案:Qg==
6YeR5bGe6ZWB5bGe5LqO6L6D5rS75rO855qE6YeR5bGe77yM5bqU5b2T6YCC55So55S16Kej5rOV5p2l5Yi25Y+W77yM5LiN6IO955So54Ot6L+Y5Y6f5rOV44CC
本课配套习题挑战模式2/5
单选题
难度系数:
2.冶金工业上常用电解熔融MgCl2而不用电解MgO的方法制取镁,其原因是
A: 熔融的MgO不导电 |
B: MgO分子间作用力很大 |
C: MgO熔点高 |
D: MgO属原子晶体 |
一次做对,真牛!
+5奖励规则>
- 提示1:5pys6aKY5Y+v5Lul6YeH55So5o6S6Zmk5rOV44CCTWdP562J6YeR5bGe5rCn5YyW54mp5bGe5LqO56a75a2Q5pm25L2T44CC
- 答案:Qw==
55Sx5LqOTWdP55qE54aU54K56L6D6auY77yM5Zug5q2k5oiR5Lus55So54K56Kej5rCv5YyW6ZWB55qE5pa55rOV5p2l5Yi25Y+W6ZWB44CC
本课配套习题挑战模式3/5
单选题
难度系数:
3.在工业上常常采用下列四种方法冶炼金属:①焦炭法;②水煤气法(或H2或CO法);③活泼金属置换法;④电解法。这四种方法在工业上都有典型的应用实例:(1)古代的湿法炼铜;(2)古代的火烧孔雀石炼铜;(3)现代的铝热法炼铬;(4)现代的从氯化镁中炼镁。其中金属冶炼方法与实例对应关系不正确的是
A: (1)① |
B: (2)② |
C: (3)③ |
D: (4)④ |
一次做对,真牛!
+5奖励规则>
- 提示1:5rm/5rOV54K86ZOc5piv5Zyo5rq25ray5Lit5bCG6ZOc572u5o2i5Ye65p2l44CC
- 提示2:546w5Luj55qE5LuO5rCv5YyW6ZWB5Lit54K86ZWB5piv54K56Kej54aU6J6N55qE5rCv5YyW6ZWB55qE5pa55rOV44CC
- 答案:Qg==
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
本课配套习题挑战模式4/5
单选题
难度系数:
4.下列属于传统湿法冶炼铜的是
A: CO还原CuO制取Cu |
B: 电解CuCl2制取Cu |
C: 高温下O2与Cu2S反应制取Cu |
D: Fe与CuSO4溶液反应制取Cu |
一次做对,真牛!
+5奖励规则>
- 提示1:5rm/5rOV54K86ZOc5piv5Zyo5rq25ray5Lit5bCG6ZOc572u5o2i5Ye65p2l44CC
- 答案:RA==
5rm/5rOV54K86ZOc77yM5qC55o2u6L+Z5Liq56ew5ZG85Y+v5Lul5o6o5rWL5piv5Zyo5rq25ray5Lit6L+b6KGM55qE5Y+N5bqU77yM5LuW5piv55So6ZOB5bCG56Gr6YW46ZOc5rq25ray5Lit55qE6ZOc5Y2V6LSo572u5o2i5Ye65p2l44CC6YCJ5oupROmhueOAgg==
本课配套习题挑战模式5/5
单选题
难度系数:
5.铝士矿的主要成分中含有氧化铝、氧化铁和二氧化硅等,工业上经过下列工艺可以冶炼金属铝。下列说法不正确的是
A: ①、②中除加试剂外,还需要进行过滤操作 |
B: a、b中铝元素的化合价相同 |
C: ③中需要通入过量的氨气 |
D: ④进行的操作是加热,而且d一定是氧化铝 |
一次做对,真牛!
+5奖励规则>
- 答案:Qw==
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