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Iron, once dipped in concentrated H2SO4,...

Iron, once dipped in concentrated `H_2SO_4`, does not displace copper from copper sulphate solution, because

A

It is lessreactive than copper

B

A layer of sulphate is deposited on it

C

An inert layer of iron oxide s deposited on it

D

All valence electrons of iron are consumed

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The correct Answer is:
c
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