A metal 'A' is added to a test tube containing copper (II) nitrate solution. After a few minutes a colour change is observed. 1) according to this observation which is more reactive metal-copper or A ? Give reason for your choice of answer.
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(ii) When metal B is added to copper (II) sulphate solution, a displacement reaction will take place due to which the blue colour of copper (II) sulphate solution will fade and a red-brown deposit of copper will be formed on metal B.
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