The reddish brown deposit formed on iron nails kept in a solution of copper sulphate is:

C u_{2} O

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C u

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C u O

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C u S

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Solution

The correct option is D $C u$
According to reactivity series, iron is more reactive than copper. So it will displace copper from copper sulphate.
$F e + C u S O_{4} \to F e S O_{4} + C u$
Copper is reddish brown in colour.

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The reddish brown deposit formed on iron nails kept in a solution of copper sulphate is:

The correct option is D CuAccording to reactivity series, iron is more reactive than copper. So it will displace copper from copper sulphate.Fe+CuSO4→FeSO4+CuCopper is reddish brown in colour.

The correct option is D $C u$
According to reactivity series, iron is more reactive than copper. So it will displace copper from copper sulphate.
$F e + C u S O_{4} \to F e S O_{4} + C u$
Copper is reddish brown in colour.