If addition of conc. H_(2)SO_(4) is made to an unknown salt, a colourl – InterviewSolution

1.	If addition of conc. H_(2)SO_(4) is made to an unknown salt, a colourless and odouriess gas is produced then which of the following can be present ?
Answer» `CO_(3)^(2-)` `S^(2-)` `CL^(-)` `NO_(3)^(-)` ANSWER :A

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