Passage - VII : An aqueoussolution 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 concentratedHNO_(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. y is

Passage - VII : An aqueoussolution of a gas (x) gives the following r

1.	Passage - VII : An aqueoussolution 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 concentratedHNO_(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. y is
Answer» `SO_(2)` `H_(2)SO_(4)` `BaCl_(2)` S SOLUTION :Cation size increase ionic nature increase SOLUBILITY increase. In `Rb_(2)SO_(4) rArr Rb^(+)` is large size cation`Rb_(2)SO_(4)` is more soluble in WATER