Salt`(A)` on heating gives a colourless neutral gas which supports combustion.
From the aforesaid, flow diagram, answer the following questions.
Which of the following statement is correct ?

Options

A. Salt `(A)` gives yellow precipitate with chloroplatinic acid as well as with sodium cobaltinitrite.
B. The brown ring is formed due to the formation of nitroso ferrous sulphate `[Fe(NO)]^(2+)SO_(4)^(-)`.
C. Salt `C` reacts with silver nitrate solution to form white precipitate.
D. (A) and (B) both.

Answer

D

Explanation

(A)`2NH_(4)^(+)+[PtCl_(6)]^(4-)to(NH_(4))_(2)[PtCl_(6)]darr`(yellow)
`3NH_(4)^(+)+[Co(NO_(2))]^(3-)to(NH_(4))_(3)[Co(NO_(2))_(6)]darr`(yellow)
(B)`2NO_(3)^(-)+4H_(2)SO_(4)+6Fe^(3+)+2NO uarr+4SO_(4)^(2-)+4H_(2)O`
`SO_(4)^(2-)+Fe^(2+)+NOto[Fe(NO)]^(2+)SO_(4)^(2-)`
( C)`Ag NO_(3)+NaNO_(3)to`No reaction.
If the anion is `NO_(2)^(-)` then `Ag^(+)+NO_(2)^(-)toAg NO_(2)darr`(white)
Reactions:
`underset((A))(NH_(4)NO_(3))+NaOH to underset((B))(NH_(3)uarr)+underset((C))(NaNO_(3))`
`NH_(3)+HCl to NH_(4)Cluarr`(White)
`NO_(3)^(-)+4Zn+7OH^(-)+6H_(2)O to NH_(3)+4[Zn(OH)_(4)]^(2-)`