Saved Bookmarks
| 1. |
Column(I) contains some reagents which when taken in excess produce precipitate with radical given in column (II).Accordingly match the column (I) with column (II). `{:(underset(("Reagent"))(Column-I),underset(("Radical"))(Column-II)),((A)KCN(aq),(p)Pb^(2+)),((B)NaOH(aq),(q)Ag^(+)),((C )Kl(aq),(r)Hg_2^(2+)),((D)K_2CrO_4(aq),(s)Cu^(2+)):}` |
|
Answer» Correct Answer - A`to`p,r ; B`to`q,r,s ; C`to`p,q,r,s ; D`to`p,q,r (A)`Pb (CN)_2darr` white , not soluble in excess to reagent. `AgCNdarr` white soluble in excess of reagent `Hg+Hg(CN)_2darr` black, not soluble in excess reagent, `Cu(CN)_2darr` (yellow) `overset("Excess")toK_3[Cu(CN)_4]` (soluble complex) (B)`Pb(OH)_2darr` white `overset("Excess")(Na_2)[Pb(OH)_4]`(soluble complex ) `Ag_2Odarr` brown, `Hg_2Odarr` black, `Cu(OH)_2darr` blue (C )`Pbl_2darr`yellow `overset("Excess")to [Pbl_4]^(2-)` soluble complex only with concentrated solution of KI(4M). `AgIdarr`yellow `overset("excess")to` No reaction `Hg_2l_2darr"Green"overset("Excess")to[Hgl_4]^(-)+Hgdarr`black `ubrace(Cu l darrwhite+I_3^(-))to`white ppt in brown coloured solution (D)`PbCrO_4darr`yellow `Ag_2CrO_4darr`(brick red/brownish red) `Hg_2CrO_4darr` red (with hot soluton of `K_2CrO_4`) In cold, brown precipitate is obtained |
|