When in the blue solution of copper sulphate, zinc strip is dipped, after some time the colour changes to
1)Pink
2)Green
3)Colourless
4)Remains blue
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3) colourless
Explanation:
In this reaction zinc displace copper from copper sulphate compound so that copper is set free . The blue colour of copper sulphate solution fades due to the formation of zinc sulphate which is colourless.... This displacement reaction take place because zinc is more reactive than copper
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