Question

Match items of Column I with the items of Column II and assign the correct code:

	Column I		Column II
(a)	Cyanide process	(i)	Ultrapure $Ge$
(b)	Froth floatation process	(ii)	Dressing of $ZnS$
(c)	Electrolytic reduction	(iii)	Extraction of $Al$
(d)	Zone refining	(iv)	Extraction of $Au$
		(v)	Purification of $Ni$

• A. a - (iv), b - (ii), c - (iii), d - (i)
• B. a - (ii), b - (iii), c - (i), d - (v)
• C. a - (i), b - (ii), c - (iii), d - (iv)
• D. a - (iii), b - (iv), c - (v), d - (i)

Answer 1

The correct option is A a - (iv), b - (ii), c - (iii), d - (i)

Cyanide process is used for the extraction of $Au$ and $Ag$.

Froth flotation process is used for dressing of $ZnS$. This process is used for sulphide ores.

Electrolytic reduction is used in the extraction of $Al$.

Zone refining is used to obtain ultrapure $Ge$.
The correct code for a, b, c and d are respectively, (iv), (ii), (iii), (i).