(A) `:` `PbCl_(2)` and `HgCl_(2)` precipitates can be separated by hot water. `(R ) :` Aqueous solution of `PbCl_(2)` give yellow precipitate with `K_(2)CrO_(4)` solution.

(A) `:` `PbCl_(2)` and `HgCl_(2)` precipitates can be separated by hot

1.	(A) `:` `PbCl_(2)` and `HgCl_(2)` precipitates can be separated by hot water. `(R ) :` Aqueous solution of `PbCl_(2)` give yellow precipitate with `K_(2)CrO_(4)` solution.
Answer» Correct Answer - 2 `Pb^(+2)` is present if the precipitate disosolves in hot water. `Hg_(2)^(2+)` is present if the precipitate does not dissolve in hot water.

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When a metal rod M is dipped into an aqueous colourless concentrated solution of compound N, the solution turns light blue. Addition of aqueous `NaCl` to the blue solution gives a white precipitate O. Addition of aqueous `NH_(3)` dissolves O and gives an intense blue solution. The final solution containsA. `[Pb(NH_(3))_(4)]^(2+)` and `[CoCl_(4)]^(2-)`B. `[Al(NH_(3))_(4)]^(3+)]` and `[Cu(NH_(3))_(4)]^(2+)`C. `[Ag(NH_(3))_(2)]^(+)` and `[Cu(NH_(3))_(4)]^(2+)`D. `[Ag(NH_(3))_(2)]^(+)` and `[Ni(NH_(3))_(6)]^(2+)`
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(A) `:` `PbCl_(2)` and `HgCl_(2)` precipitates can be separated by hot water. `(R ) :` Aqueous solution of `PbCl_(2)` give yellow precipitate with `K_(2)CrO_(4)` solution.

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