The compound 'A' is a colourless solid. It gives following tests: Test-I: The addition of compound 'A' solution to a solution of KI, followed by acidification with dilute H_(2)SO_(4), results in the formation of brown coloured compound 'B'. Test-II: The acidified KMnO_(4) solution is decolourized, by a solution of compound 'A', but no gas is evolved. Compound 'A' and 'B' may be:

The compound 'A' is a colourless solid. It gives following tests: Tes

1.	The compound 'A' is a colourless solid. It gives following tests: Test-I: The addition of compound 'A' solution to a solution of KI, followed by acidification with dilute H_(2)SO_(4), results in the formation of brown coloured compound 'B'. Test-II: The acidified KMnO_(4) solution is decolourized, by a solution of compound 'A', but no gas is evolved. Compound 'A' and 'B' may be:
Answer» `Na_(2)S_(2)O_(3)` and S `NaNO_(2)` and `KI_(3)` `NaNO_(2)` and `NO_(2)` `Na_(2)S_(2)O_(3)` and `I_(2)` ANSWER :B