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A bluish green coloured compound 'A' on ...

A bluish green coloured compound 'A' on heating gives two products 'B' and 'C'. A metal 'D' is deposited on passing `H_(2)` through heated 'B'. The compound 'A' and 'B' are insoluble in water. 'B' is black in colour, dissolves in HCI and on treatment with `K_(4)[Fe(CN)_(6)]` gives a chocolate brown ppm of compound 'E'. 'C' is colourless, odourless gas and turns lime water milkly.
Compound 'A' is

A

`CuSO_(4)`

B

`CuCO_(3)`

C

`FeSO_(4)`

D

`CrCl_(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
`underset(A)(CuCO_(3)) to underset("Black")(CuO)+underset(C)(CO_(2))`
`CuO+H_(2) overset(Delta)to underset(D)(Cu)+H_(2)O`
`CuO+2HCl to CuCl_(2)+H_(2)O`
`2Cu^(2+)+K_(4)[Fe(CN)_(6)] to Cu_(2) underset(underset(E)("chacelate brown ppt"))([Fe(CN)_(6)]) darr`
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Knowledge Check

  • A bluish green coloured compound 'A' on heating gives two products 'B' and 'C'. A metal 'D' is deposited on passing H_(2) through heated 'B'. The compound 'A' and 'B' are insoluble in water. 'B' is black in colour, dissolves in HCI and on treatment with K_(4)[Fe(CN)_(6)] gives a chocolate brown ppm of compound 'E'. 'C' is colourless, odourless gas and turns lime water milkly. The compounds 'B' and 'C' are respectively

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    `CuS, SO_(2)`
    B
    CuO, `CO_(2)`
    C
    FeO, `H_(2)S`
    D
    `Cr_(2)O_(3), CO`

  • A bluish green coloured compound 'A' on heating gives two products 'B' and 'C'. A metal 'D' is deposited on passing H_(2) through heated 'B'. The compound 'A' and 'B' are insoluble in water. 'B' is black in colour, dissolves in HCI and on treatment with K_(4)[Fe(CN)_(6)] gives a chocolate brown ppm of compound 'E'. 'C' is colourless, odourless gas and turns lime water milkly. The compounds 'D' and 'E' are respectively

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    `Cu, Cu_(2)[Fe(CN)_(6)]`
    B
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    Zn, CuO

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