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JEE Main Chemistry question

ChemistryPrinciples Related to Practical ChemistryJEE Main

An aqueous solution of a substance gives a white precipitate on treatment with dil. HCl, which dissolves on heating. On passing in the hot acidic solution, a black precipitate is formed. The substance is:

Answer: (D)

Solution

gives a white precipitate of with dilute HCl, which is characteristically soluble in hot water (unlike or , which stay insoluble

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Question ID VK-138728