Question

A colourless `(X)` is soluble in water and also in alcohol and amies. ON string heating (X) gives a brown gas `(Y)` and a grey residue `(X)` dissolves in ammon to give a solution `(Z)` which gives silver mirror with aldelydes .A solution of (X) is easly reduced by iron (II) sulphide .A solution of `(X)` also gives a brick red precipitate with potassium dishronate solution .Hence , choose the correct qalternative
A. `{:(" X"," Y"," Z"),(Pb(NO_(3))_(2),NO_(2),Ag_(2)O):}`
B. `{:(" X"," Y"," Z"),(AgNO_(3),NO,[Ag(NH_(3))_(2)]^(o+)):}`
C. `{:(" X"," Y"," Z"),(AgNO_(3),NO_(2),Ag_(2)O):}`
D. `{:(" X"," Y"," Z"),(AgNO_(3),NO_(2),[Ag(NH_(3))_(2)]^(o+)):}`

Answer 1

Correct Answer - d
`underset((X))(AgNO_(3))overset(Delta)rarr underset(("Grey residue"))(2Agdarr)+2NO_(2)uarr +underset((Y))(O_(2)uarr)`
`AgNO_(3) +NH_(4)OH rarr [Ag(NH_(3))_(2)]^(o+)`
`2[Ag(NH_(3))_(2)]^(o+) +CH_(3)CHO +H_(2)O rarr 2Ag darr`
`+CH_(3)COO^(Theta) +3NH_(3)^(o+) +NH_(3)`
`Ag^(o+) +Fe^(2+) rarr Agdarr +Fe^(3+)`
`2AgNO_(3) +K_(2)CrO_(4) rarr underset(("Brick red"))(Ag_(2)CrO_(4)darr) +2KNO_(3)`