The reddish-brown deposit obtained on iron nails when kept in a solution of ${CuSO}_{4}$ water is that of;-

${Cu}_{2} O$

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$CuO$

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$Cu$

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$CuS$

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Solution

The correct option is C
$Cu$

Explanation of the correct option:
It is obtained because iron (Fe) is more reactive than copper (Cu) in the reactivity series, It will displace sulfate from copper sulfate( ${CuSO}_{4}$ ).
Reaction;-
$Fe (s) + {CuSO}_{4} (aq) \to {FeSO}_{4} (aq) + Cu (s)$
Thus, Copper's ( $Cu$ ) color is reddish-brown.
Hence the correct option is (C).

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

iron nail was dipped into a salt solution . after sometime a reddish- brown deposition was seen .what could be the salt solution

The colour of solution after half an hour when iron nails are dipped in copper sulphate solution is
a) pale green
b) blue
c) colourless
d) reddish brown

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When the iron nail is dipped in the copper sulphate solution, after sometime the iron nail becomes brownish in colour. This brown colour is formed due to the deposition of:

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The reddish-brown deposit obtained on iron nails when kept in a solution of CuSO4water is that of;-

The reddish-brown deposit obtained on iron nails when kept in a solution of ${CuSO}_{4}$ water is that of;-