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General Principles and processes of Isolation of Elements
medium
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 | $(ii)$ Dressing of $ZnS$ process |
| $(C)$ Electrolytic | $(iii)$ Extraction of $Al$ reduction |
| $(D)$ Zone refining | $(iv)$ Extraction of $Au$ |
| $(v)$ Purification of $Ni$ |
code :
A
$A-(i),B-(ii),C-(iii),D-(iv)$
B
$A-(iii),B-(iv),C-(v),D-(i)$
C
$A-(iv),B-(ii),C-(iii),D-(i)$
D
$A-(ii),B-(iii),C-(i),D-(v)$
(NEET-2016)
Solution
Cyanide process is used for the extraction of $A u$ and $A g$
Froth flotation process is used for dressing of $Z n S$. This process is used for sulphide ores.
Electrolytic reduction is used in the extraction of $A l$.
Zone refining is used to obtain ultrapure $Ge$.
Standard 12
Chemistry
Similar Questions
List $-I$ shows reaction involve in metallurgy of $Pb$ (lead) and List $-II$ shows name of processes. Match List $-I$ with List $-II$ and select correct code for your answer
| List $-I$ | List $-II$ |
| $(P)\,PbS + 2PbO\xrightarrow{\Delta }3Pb + S{O_2} \uparrow $ | $(1)$ Smelting |
| $(Q)\,PbS + \frac{3}{2}{O_2}\xrightarrow{\Delta }PbO + S{O_2} \uparrow $ | $(2)$ Self reduction |
| $(R)\,PbC{O_3}\xrightarrow{\Delta }PbO + C{O_2} \uparrow $ | $(3)$ Calcination |
| $(S)\,PbO + C\xrightarrow{\Delta }Pb + CO \uparrow $ | $(4)$ Roasting |
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