The metals given below are in the increasing order of their reduction potential.
Mg,Zn,Co,H,Cu,Ag
Which of these metals displaces hydrognen from dilute acid ?

Why can’t ‘Cu’ displace H_2 gas from dilute acids?

Arrange the following metals in the order in which they displace each other from the solution of their salts. Al, Cu, Fe, Mg and Zn

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

Out of Cu, Ag, and Mg the metal which can displace all others from their aqueous salt solution is-

Name a metal which can be extracted by electrolytic reduction. (Na, Cu, Ag, Zn)

(i) Write the balanced equations to represent what happens when (a) acidified potassium permanganates reacts with hydrogen sulphide ? (b) acidified potassium dichromate solution reacts with iron (II) solution (ionic equation) ? (ii) The figure given below illustrates the first ionisation enthalpies of first, second and third series of transition elements. (a) Which series amongst the first, second and third series of transition elements have the highest first ionisation enthalpy and Why ? (b) Why there is a fall in IE_(2) from Cr to Mn and from Cu to Zn ? Explain.

The position of some metals in the electrochemical series in decreasing electropositive character is given as Mg gt Al gt Zn gt Cu gt Ag .What will happen if a copper spoon is used to stir a solution of aluminium nitrate: