Blister Cu contains about:

60% Cu

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90% Cu

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98% Cu

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100% Cu

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Solution

The correct option is C 98% Cu
Blister Cu contains 2-3 % impurity as Fe, S and As. Hence 98 $%$ Cu is present in Blister Cu.

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A piece of Cu contains $6.022 \times 10^{24}$ atoms. How many mole of Cu atoms does it contain?

Name the process used for the formation of blister $C u$ by following reaction :(unbalanced reactions)

$2 C u_{2} S + 3 O_{2} \to C u_{2} O + S O_{2}$

C u_{2} O + C u_{2} S \to C u + S O_{2}

Solidified $C u$ obtained from the reverberatory furnace has blistered appearance. This is due to:

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