$N a_{2} C r O_{4}$ on treatment with lead acetate gives a precipitate. This dried precipitate is used as a pigment for road signs and markings . The solid is known as:

White lead

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Chrome green

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Chrome yellow

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Red lead

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Solution

The correct option is C Chrome yellow
$N a_{2} C r O_{4} + (C H_{3} C O O)_{2} P b \to P b C r O_{4} + 2 C H_{3} C O O N a$

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Q. The acidified solution of sodium chromate gives a _______ coloured precipitate with the addition of lead acetate.

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K_{2} C r_{2} O_{7}

and concentrated

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Na2CrO4 on treatment with lead acetate gives a precipitate. This dried precipitate is used as a pigment for road signs and markings . The solid is known as:

The correct option is C Chrome yellowNa2CrO4+(CH3COO)2Pb→PbCrO4+2CH3COONa

$N a_{2} C r O_{4}$ on treatment with lead acetate gives a precipitate. This dried precipitate is used as a pigment for road signs and markings . The solid is known as:

The correct option is C Chrome yellow
$N a_{2} C r O_{4} + (C H_{3} C O O)_{2} P b \to P b C r O_{4} + 2 C H_{3} C O O N a$