Passage - VII :
An aqueous solution of a gas (x) gives the following reactions
(1) It decolourises an acidified `K_(2)Cr_(2)O_(7)` solution
(2) On boiling with `H_(2)O_(2)` cooling it and then adding on aqueous solution of `BaCl_(2)`, a precipitation insoluble in dilute HCl is obtained
(3) On passing `H_(2)S` in the solution white turbidity (y) is obtained
(4) When gas 'x' is heated with concentrated `HNO_(3)` evolves a brown coloured gas (A)
(5) When 'x' also dissolves in `Na_(2)SO_(3)` solution on heating a clear solution (C ) is formed.
Gas 'x' is

Options

A. `SO_(3)`
B. S
C. `SO_(2)`
D. `H_(2)S`

Answer

C

Explanation

Cu do not reacts with dil. `H_(2)SO_(4)` and not form `CuSO_(4)`