On immersing an iron nail in CuSO4 solution for few minutes, you will observe that?

(a) no reaction takes place (b) the colour of solution fades away (c) the surface of iron nails acquire a black coating (d) the colour of solution changes to green

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Soham ghosh
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Friday, 27 November 2020 07:55 AM
On immersing iron nail in solution we will notice change in colour from BLUE to GREEN and a BROWN deposit would be seen on the iron nails. It is because the iron ions slowly displaces the copper ions form its solution due to its high reactivity.
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