`FeSO_(4)` forms brown ring with

Ring test for mirates conformed by acidifying prepared FeSO_(4) soin a brown ring is formed that to the formation of [Fe(H_(2)O)_(3)NO[SO_(4) This rest should not be performed for nitrate ion in presence of

(i) An aqueous solution of a white coloured compound (A) on reaction with HCl gives a white precipitate of compound (B) . (ii) (B) becomes soluble in chlorine water with the formation of (C) (iii) (C) reacts with KI to give a precipitate which becomes solube in excess of it forming a compount (D) . the compound (D) is used for detecting ammonium salts. (iv) (B) and (C) both, on treatement with SnCl_(2) give a grey precipitate of (E) . (v) When conc. H_(2)SO_(4) is added slowly into a mixture of cold solutions of (A) and FeSO_(4) is added slowly into a mixture of cold solutions of (A) and FeSO_(4) , a brown ring of compound (F) is formed. (A) on dissociation in H_(2)SO_(4) gives:

(i) An aqueous solution of a white coloured compound (A) on reaction with HCl gives a white precipitate of compound (B) . (ii) (B) becomes soluble in chlorine water with the formation of (C) (iii) (C) reacts with KI to give a precipitate which becomes solube in excess of it forming a compount (D) . the compound (D) is used for detecting ammonium salts. (iv) (B) and (C) both, on treatement with SnCl_(2) give a grey precipitate of (E) . (v) When conc. H_(2)SO_(4) is added slowly into a mixture of cold solutions of (A) and FeSO_(4) is added slowly into a mixture of cold solutions of (A) and FeSO_(4) , a brown ring of compound (F) is formed. Compound (A) contains ... ions.

(i) An aqueous solution of a white coloured compound (A) on reaction with HCl gives a white precipitate of compound (B) . (ii) (B) becomes soluble in chlorine water with the formation of (C) (iii) (C) reacts with KI to give a precipitate which becomes solube in excess of it forming a compount (D) . the compound (D) is used for detecting ammonium salts. (iv) (B) and (C) both, on treatement with SnCl_(2) give a grey precipitate of (E) . (v) When conc. H_(2)SO_(4) is added slowly into a mixture of cold solutions of (A) and FeSO_(4) is added slowly into a mixture of cold solutions of (A) and FeSO_(4) , a brown ring of compound (F) is formed. Compound (B) is

The formation of brown ring in the reaction between nitrates, conc. H_2SO_4 and FeSO_4 involves

Select correct statement(s) for brown ring test of nitrate ions: (A) dil.\(H_{2}SO_{4}\) is used (B) \(FeSO_{4}\) is oxidized (C) \(NO_{3}^{-}\) is reduced to NO gas (D) paramagnetic \([Fe(H_{2}O)_{5}NO]SO_{4}\) is formed

What is brown ring test ?