冶炼金属一般有下列四种方法:①焦炭法;②水煤气(或氢气,或一

冶炼金属一般有下列四种方法:①焦炭法;②水煤气(或氢气,或一氧化碳)法;③活泼金属置换法;④电解法。四种方法在工业上均有应用。古代有(Ⅰ)火烧孔雀石炼铜;(Ⅱ)湿法炼铜;现代有(Ⅲ)铝热法炼铬;(Ⅳ)从光卤石中炼镁,对它们的冶炼方法的分析不正确的是

A.(Ⅰ)用①          B.(Ⅱ)用②

C.(Ⅲ)用③          D.(Ⅳ)用④

 

答案

B

解析:

 

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