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Match the extraction processes listed in...

Match the extraction processes listed in Column with metals listed in Column:

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The correct Answer is:
A-p,r; B-p; C-q; D-s
(A) Self reduction -Hg, Pb, Cu
(B) Carbon reduction -Pb ,Fe Zn, Sn (less E.P)
(C) Complete formation and displacement by metal- Silver and gold (Hydro metallurgy)
(D) Decomposition of Iodide- Boron
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