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A hand full of sand is stirred into wate...

A hand full of sand is stirred into water . The mixture will be

A

to expel the dissolved gases in blister copper

B

to bring the impurities to surface and oxidize them

C

to inrease the carbon content of copper

D

to reduce the metallic oxide impurities with hydrocarbon gases liberated from the wood

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The correct Answer is:
D
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