1.

In a combination of NO_3, Br and I present in a mixture, Br and I interfere in the ring test for NO_3 . These are removed by adding a solution of

Answer»

`AgNO_3`
`Ag_2 SO_4`
`Ag_2 CO_3`
none of these

SOLUTION :`NO_(3)^(-) + Br^(-) + I^(-)+ Ag_(2) SO_(4) to underset("ppt")ubrace(AGBR + AGI) + NO_(3)^(-) + SO_(4)^(2-)`
`Ag_2 CO_3` does not DISSOLVE in water .


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