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Q.

Cupellation is a refining technique for metal 'X' to remove metal 'Y' present as an impurity. 'X' and 'Y' are respectively

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a

Cu,Fe

b

Pb,Ag

c

 Ag,Pb

d

Fe,Cu

answer is B.

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Detailed Solution

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  • Cupellation is a refining process.
  • It is used when ores or metals are present under high temperature. 
  • The noble metals are separated from impurities using a cupel which is a flat, porous dish.
  • It is also used for coin making and testing fresh metals.
  • In large scale cupellation, is used to separate silver from lead.
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