Y is a gas which disproporionates on passing through hot and concentrated solution of X.Z is a gas which can also be obtained by the action of solution of X on zinc Solution on X on treatment with the following forms an unstable hydroxide precipitate which decomposes to given an oxide precipitate :

Y is a gas which disproporionates on passing through hot and concent

1.	Y is a gas which disproporionates on passing through hot and concentrated solution of X.Z is a gas which can also be obtained by the action of solution of X on zinc Solution on X on treatment with the following forms an unstable hydroxide precipitate which decomposes to given an oxide precipitate :
Answer» `HgCl_(2)` `ZnSO_(4)` `FeSO_(4)` `CuSO_(4)` Answer :A