Question

(1) On immersing brown coloured nails in blue coloured copper sulphate solution; they displace.................from the copper sulphate solution and(2) their colour becomes..............(3)this reaction is a ................ Reaction and conclusion of experiment for the same

Answer 1

1) Copper 2) blue 3) Displacement
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Answer 2

1 copper

2 light green

3 displacement reaction

reaction taking place is:

CuSO4+Fe- FeSO4+Cu

(BLUE)          (LIGHT

                      green)