A) impure Cu
B) Cu alloy
C) pure Cu
D) Cu having 1% impurity
Correct Answer: D
Solution :
Key Idea Blister copper is obtained by the process of bessemerisation from the copper matte in the metallurgy of Cu. It is impure. Blister copper contain about 98 to 99% pure copper and 1 to 2% impurities like Ag, Au, Zn, Ni etc.
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