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General Principles and processes of Isolation of Elements
easy
When alloy of silver and lead is rich in silver
A
Distillation is used
B
Cupellation process is used
C
Parke's method is used
D
Belt's method is used
Solution
Cupellation: $Pb$ impurities present in $Ag$ are removed by this method. The impure metal is heated in a cupel or oval shaped crucible made of bone ash or cement and blast of air is passed over the molten mass. The impurities get oxidised and removed with the blast of air.
Standard 12
Chemistry
Similar Questions
Correct match the List- $I$ with List- $II$
| List- $I$ | List- $II$ |
| $(P)\, [M(CN)_2]^-$ | $(1)$ $Ni$ (during refining of metal) |
| $(Q)\, [M(CO)_4]$ | $(2)\, Ti$ (during refining of metal) |
| $(R)\, MI_4$ | $(3)\, Pb$ (during roasting of ore) |
| $(S)\, MO$ | $(4)\, Ag$ (during leaching of ore) |
normal
