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Reported Question / Answer
Q.) Processes used to reduce metal ores or to refine metals that are based on the process of electrolysis are collectively referred to as __________.
1)
hydrometallurgy
2)
pyrometallurgy
3)
calcination
4)
electrometallurgy
5)
NULL
Answer :
4
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Human Verification : Answer 2 + 3 = ?
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