1.

Which of the following does not give test with dil. and conc. H_2SO_4 ?

Answer»

`NO_2^(-)`<BR>`Br^(-)`
`SO_3^(2-)`
`SO_4^(2-)`

Solution :Only `NO_2^(-), CL^(-) and Br^(-)` give TEST with dil. and CONC. `H_2SO_4`


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