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An aqueous solution of a white salt A gi...

An aqueous solution of a white salt A gives a white precipitate B on treatment with dilute HCI in cold conditions. B is soluble in boiling water. An aqueous solution of A gives a yellow precipitate on treatment with a solution of `K_(2)CrO_(4)`. The soda extract of A is acidified with dilute `H_(2)SO_(4)` boiled to remove `CO_(2)` and treated with a freshly prepared solution of `FeSO_(4)` Concentrated `H_(2)SO_(4)` is added to the resulting solution (along the walls of the test tube so that the `H_(2)SO_(4)` forms a separate layer). A brown ring is formed at the junction of the two layers.
On treatment with a Kl solution, an aqueous solution of A will give

A

a yellow precipitate soluble in boiling water

B

a yellow precipitate insoluble in boiling water

C

a white precipitate soluble in boiling water

D

a white precipitate insoluble in boiling water

Text Solution

Verified by Experts

The correct Answer is:
A
Yellow precipitate due `PbI_(2)`
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Knowledge Check

  • An aqueous solution of a white salt A gives a white precipitate B on treatment with dilute HCI in cold conditions. B is soluble in boiling water. An aqueous solution of A gives a yellow precipitate on treatment with a solution of K_(2)CrO_(4) . The soda extract of A is acidified with dilute H_(2)SO_(4) boiled to remove CO_(2) and treated with a freshly prepared solution of FeSO_(4) Concentrated H_(2)SO_(4) is added to the resulting solution (along the walls of the test tube so that the H_(2)SO_(4) forms a separate layer). A brown ring is formed at the junction of the two layers. A solution of A when treated with

    A
    a white precipitate soluble in an excess of `NH_(3)`
    B
    a white precipitate soluble in an excess of `NH_(3)`
    C
    a grey precipitate soluble in an excess of `NH_(3)`
    D
    a grey precipitate insoluble in an excess of `NH_(3)`

  • An aqueous solution of silver nitrate gives a white precipitate with

    A
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    B
    `CHCl_3`
    C
    `HCl`
    D
    None of the above

  • Au aqueous solution of silver nitrate gives a white precipitate with

    A
    `C_(2)H_(5)CI`
    B
    `CHCI_(3)`
    C
    `HCI`
    D
    `"CCI"_(4)`

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