Question

Beakers A, B and C contain zinc sulphate, silver nitrate and iron (II) sulphate solutions respectively. Copper pieces are added to each beaker. Blue colour will appear in case of

A. beaker A 

B. beaker B 

C. beaker C 

D. all the beakers.

Answer 1

Among all the available metal solutions, copper is more reactive as compared to silver only. Copper cannot displace zinc or iron from its salt as it is less reactive as compared to both the metals. So blue colour will appear only in the beaker which has Silver nitrate solution in it. 

So the correct answer is b