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The following methods produce metal powder with high degree of purity EXCEPT:
Group of answer choices
electrolysis
chemical reduction
mechanical

 

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Mechanical methods are not typically used for producing metal powder with a high degree of purity. While mechanical methods such as milling and grinding can be used to produce metal powder, they do not typically produce a high degree of purity.

On the other hand, electrolysis and chemical reduction are commonly used methods for producing metal powder with high purity. Electrolysis involves passing an electric current through a molten metal compound to separate the metal ions and produce pure metal powder. Chemical reduction involves the use of a reducing agent to remove impurities and produce pure metal powder. Both of these methods can be highly effective for producing metal powder with a high degree of purity.