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An iron nail was dropped into copper sulphate solution. After some time, the colour of the solution changed from :(1) light green to blue(2) blue to light green(3) light green to colourless(4) blue to yellow

Answer» An iron nail was dropped into copper sulphate solution. After some time, the colour of the solution changed from :

(1) light green to blue

(2) blue to light green

(3) light green to colourless

(4) blue to yellow


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