Question

On immersing an iron nail in CuSO4 solution for few minutes, you will
observe
(a) no reaction takes place
O
(b) the colour of solution fades away
O
(c) the surface of iron nails acquire a black coating
(d) the colour of solution changes to green​

Answer 1

Answer:

d is the correct answer for your question

Explanation:

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Answer 2

Answer:

The colour of solution changes to green colour

hope it helps......................