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The 'shanks system' of leaching (i.e., counter-current multiple contact leaching) is used for | |
A. | recovery of tannis from the tree barks and woods. [Wrong Answer] |
B. | leaching sodium nitrate from Chilean nitrate bearing rock. [Wrong Answer] |
C. | both (a) and (b). [Correct Answer] |
D. | neither (a) nor (b). [Wrong Answer] |