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 - (iv), b - (ii), c - (iii), d - (i)
a - (ii), b - (iii), c - (i), d - (v)
a - (i), b - (ii), c - (iii), d - (iv)
a - (iii), b - (iv), c - (v), d - (i)
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)
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Solution
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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.
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Q1
Match items of Column I with the items of Column II and assign the correct code:
Column I
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(a)
Cyanide process
(i)
Ultrapure Ge
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Zone refining
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