Heap-leach extraction involves piling crushed ore into large piles and spraying it with ________.
A) an alkaline-cyanide solution
B) concentrated salt water
C) high-pressure steam
D) giant sandblasters
E) None of these are correct.
Correct Answer:
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Q22: The need for extraction of raw metals
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Q25: Pressurized fluid injected into a well is
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Q27: What gas is released in the process
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Q29: Smelting releases metals from ore.
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