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When a metal rod M is dipped into an aqu...

When a metal rod M is dipped into an aqueous colourless concentreted solution ofcompound N, the solution tuns light blue. Addition ofaqueousn NaCI to the blue solution gives a white precipitate 'O'. Addition ofaqueous `NH_3` dissolves 'O' gives an intese blue solution
The metal rod M is

A

Fe

B

Cu

C

Ni

D

Co

Text Solution

Verified by Experts

The correct Answer is:
B
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A gas 'X' is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of a colourless gas 'Y'. Identify 'X' and 'Y':

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Knowledge Check

  • When a metal rod M is dipped into an aqueous colourless concentreted solution ofcompound N, the solution tuns light blue. Addition ofaqueousn NaCI to the blue solution gives a white precipitate 'O'. Addition ofaqueous NH_3 dissolves 'O' gives an intese blue solution The compund N is

    A
    `AgNO_3`
    B
    `Zn(NO_3)_2`
    C
    `Al(NO_3)_3`
    D
    `Pd(NO_3)_2`

  • When a copper wire is dipped in aqueous AgNO_(3) solution, the solution turns blue. The reason for this is

    A
    Oxidation of silver
    B
    Reduction of copper
    C
    Oxidation of copper
    D
    Reduction of silver

  • A metal nitrate reacts with KI to give a black precipitate which addition of excess of KI converts into orange colour solution. The cation of metal nitrate is:

    A
    `Hg^(2+)`
    B
    `Bi^(3+)`
    C
    `Pb^(2+)`
    D
    `Cu^(+)`

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