1.

A hydrated metallic salt A, light green in colour, on careful heating gives a white anhydrous residue B. Aqueous solution of B reacts with NO to give a dark brown compound C. On strong heating, B decomposes to give a brown residue D and a mixture of two gases E and F. Identify E and F.

Answer»

`SO_2` and `SO_3`
`NO_2` and `NO`
`NH_3` and `NO_2`
NONE of these

Solution :`A = Fe SO_(4) * 7 H_(2) O , B =FeSO_(4) , C =Fe (NO)SO_(4) , D = Fe_(2) O_(3) , E = SO_(2) , F = SO_3`.


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