1.

{:("Process",," Ores"),("i.Hydraulic process",,"(a)ZnS"),("ii. Magnetic separation",,"(b)" Fe_(2)O_(3)),("iii. Froth floatation process",,"(c)"SnO_(2)),("iv. Leaching process",,"(d)" Al_(2)O_(3).2H_(2)O):}

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SOLUTION :i-b, ii-c, iii-a, iv-d


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