MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryMetallurgyPrevious Year Questions

Match items of Column I with the items of Column II and assign the correct code : (NEET-I 2016) Column I Column II

A.(i) (ii) (iii) (iv)

B.(iii) (iv) (v) (i)

C.(iv) (ii) (iii) (i)✓ Correct

D.(ii) (iii) (i) (v)

Explanation

Cyanide process -> Extraction of Au. Froth floatation process ->Dressing of ZnS Electrolytic reduction -> Extraction of Al Zone refining -> Ultrapure Ge 41. Extraction of gold and silver involves leaching with CN ion. Silver is later recovered by (NEET 2017) (a) distillation (b) zone refining (c) displacement with Zn (d) liquation Cyanide process is carried out which involves leaching of the metal with cyanide ion to obtain less reactive metals like gold and silver. The impure metal is treated with NaCN solution in presence of air. The metal then forms a soluble complex. The rea

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