Question

The metals that cannot be obtained by electrolysis of an aqueous solution of its salt is: I) Ca ii)Cu iii)Cr iv)Ag

Answer 1

The metal that cannot be obtained by electrolysis of an aqueous solution of its salt is Calcium (Ca). During the process of electrolysis of calcium chloride, calcium hydroxide is resulted. This is mainly because when the calcium metal reacts with water, it gives out calcium hydroxide. So, I) or Ca is your answer. 

Answer 2

The metals that cannot be obtained by electrolysis of an aqueous solutiin of its salt is I) Ca.