List-I (ppt) List-II (colour)
(P) ${A g}_{2} C r O_{4}$ (1) Yellow
(Q) ${C u}_{2} [F e {(C N)}_{6}]$ (2) White
(R) $B a {S O}_{4}$ (3) Chocolate brown
(S) $P b I_{2}$ (4) Scarlet Red

P - 4, Q - 2, R - 1, S - 3

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P - 2, Q - 3, R - 4, S - 1

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P - 4, Q - 3, R - 2, S - 1

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P - 3, Q - 4, R - 1, S - 2

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Solution

The correct option is C $P - 4, Q - 3, R - 2, S - 1$
$A g_{2} C r O_{4} :$ Silver chromate : It is scarlet red in color.

$C u_{2} [F e {(C N)}_{6}] :$ It has a octahedral geometry of iron. and it is chocolate brown in color.

$B a S O_{4} :$ The precipitate of barium sulfate is white in color.

$P b I_{2} :$ Lead II iodide forms a bright yellow odorless crystalline solid , that becomes orange and red when heated.

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	List-I (ppt)		List-II (colour)
(P)	${A g}_{2} C r O_{4}$	(1)	Yellow
(Q)	${C u}_{2} [F e {(C N)}_{6}]$	(2)	White
(R)	$B a {S O}_{4}$	(3)	Chocolate brown
(S)	$P b I_{2}$	(4)	Scarlet Red

List-I (ppt)List-II (colour)(P)Ag2CrO4(1)Yellow(Q)Cu2[Fe(CN)6](2)White(R)BaSO4(3)Chocolate brown(S)PbI2(4)Scarlet Red

List-I (ppt) List-II (colour)
(P) ${A g}_{2} C r O_{4}$ (1) Yellow
(Q) ${C u}_{2} [F e {(C N)}_{6}]$ (2) White
(R) $B a {S O}_{4}$ (3) Chocolate brown
(S) $P b I_{2}$ (4) Scarlet Red