A metal salt solution forms a yellow precipitate with potassium chromate in acetic acid, a white precipitate with dilute sulphuric acid, but gives no precipitate with sodium chloride or iodide. The white precipitate obtained when sodium carbonate is added to the metal salt solution consists of:

lead carbonate

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basic lead carbonate

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barium carbonate

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strontium carbonate

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Solution

The correct option is C barium carbonate
Option (C) is correct.
The white precipitate obtained when sodium carbonate is added to the metal salt solution consists of barium carbonate.
Potassium chromate ( $K_{2} C r O_{4}$ ) solution gives a yellow precipitate of barium chromate when the solution of fifth group precipitate in acetic acid is treated with it.
$B a C O_{3} + 2 C H_{3} C O O H ⟶ (C H_{3} C O O)_{2} B a + H_{2} O + C O_{2}$
$(C H 3 C O O)_{2} B a + K_{2} C r O_{4} ⟶ B a C r O 4 (y e l l o w p r e c i p i t a t e) + 2 C H 3 C O O K$

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