Pb(NO3)2 and Zn(NO3)2
Pb(NO3)2 and Bi(NO3)2
AgNO3 and Bi(NO3)3
Pb(NO3)2 and Hg(NO3)2
The accurate choice is C.
Silver nitrate Ag(NO3) and bismuth nitrate Bi(NO3)3) result in white precipitates.
Similarly, lead hydroxide Pb(OH)2), zinc hydroxide Zn(OH)2), and bismuth hydroxideBi(OH)3) form white precipitates.
However, mercury hydroxide Hg(OH)2) is unstable and does not yield a white precipitate.
Lead chloride PbCl2 is also noted as a white precipitate.
Therefore, options (A), (B), and (C) are deemed correct.
List - ISolid salt treated with dil. H2SO4 | List - IIAnion detected |
---|---|
(A) effervescence of colourless gas | (I) NO2− |
(B) gas with smell of rotten egg | (II) CO32− |
(C) gas with pungent smell | (III) S2− |
(D) brown fumes | (IV) SO23− |
List - I(Test/reagent) | List - II(Radical identified) |
---|---|
(A) Lake Test | (I) NO3− |
(B) Nessler’s Reagent | (II) Fe3+ |
(C) Potassium sulphocyanide | (III) Al3+ |
(D) Brown Ring Test | (IV) NH4+ |
List-I (Precipitating reagent and conditions) | List-II (Cation) |
---|---|
(A) \(NH_4Cl + NH_4OH\) | (I) Mn2+ |
(B) \(NH_4OH + Na_2CO_3\) | (II) Pb2+ |
(C) \(NH_4OH + NH_4Cl + H_2S gas\) | (III) Al3+ |
(D) dilute HCl | (IV) Sr2+ |