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General Principles and processes of Isolation of Elements
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Match List $I$ and $II$ and select the correct answer using the codes given below the lists :
| List $I$ | List $II$ |
| $I.$ Cyanide process | $(1)$ Ultrapure $Ge$ |
| $II.$ Floatation process | $(2)$ Dressing of $HgS$ |
| $III.$ Electrolytic reduction | $(3)$ Extraction of $Al$ |
| $IV.$ Zone refining | $(4)$ Extraction of $Au$ |
A
$I-(3), \,II-(1), \,III-(4), \,IV-(2)$
B
$I-(4), \,II-(2), \,III-(3),\, IV-(1)$
C
$I-(3),\, II-(2),\, III-(4),\, IV-(1)$
D
$I-(4),\, II-(1),\,III-(3),\,IV-(2)$
Solution
For Froth Floatation process, Pine oil is used as frother.
Aluminium is extracted through electrolytic reduction.
Semiconductor metals ($Ge, Si$) are refined in zone refining process.
Gold is extracted through a cyanide process.
Standard 12
Chemistry
