Q. Gold and silver are extracted from their respective ores by _

A
Smelting
B
Roasting
C
Leaching
D
Hydro metallurgy
Solution:

Hydrometallurgy is a method for obtaining metals from their ores. It is a technique within the field of extractive metallurgy involving the use of aqueous chemistry for the recovery of metals from ores, concentrates, and recycled or residual materials.

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