The tendencies of the electrodes made up of Cu, Zn and Ag to release electrons when dipped in their respective salt solutions decrease in the order :

The tendencies of the electrodes made up of Cu,Zn and Ag to release electrons, when dipped in their respective salt solutions decreases in the order: ZngtAggtCu , CugtZngtAg , ZngtCugtAg , AggtCugtZn .

Out of Cu,Ag,Fe and Zn the metal which can displace all other from their salt solutions is :

Out of Cu, Ag, Fe and Zn, the metal which can displace all others from their salt solutions is :

Out of Cu, Ag, Fe and Zn, the metal which can displace all others from their salt solution is :

Out of Cu,Ag,Fe and Zn , the metal which can displace all others from their salt solution is

Out of Cu, Ag, Fe and Zn , the metal which can displace all others from their salt solution is