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Which of the following reactions (s) are...

Which of the following reactions (s) are not relevant to the microcosmic salt bead test ?
`I. Cr_(2)O_(3)+3B_(2)O_(3)rarr2Cr(BO_(2))_(3)`
`II. CoO+ZnO rarrCoZnO_(2)`
`III. CoO+NaPO_(3)rarrNaCoPO`
`IV. Al_(2)(SO_(4))_(3)+3Na_(2)CO_(3)rarrAl_(2)O_(3)+3Naa_(2)SO_(4)+3CO_(2)`

A

I,III and IV

B

I,II and IV

C

II,III and IV

D

II and IV only

Text Solution

Verified by Experts

The correct Answer is:
B
`Hg_(2)Cl_(2)+2NH_(3)rarrNH_(2)HgCl+Hg+NH_(4)Cl`
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Knowledge Check

  • Which of the following statements is/are correct about the reaction? H_(2)SO_(4) +Cu_(3)P + Cr_(2)O_(7)^(2-) rarr CuSO_(4)+H_(3)PO_(4)+2Cr^(3+)

    A
    The number of moles of `Cr_(2)O_(7)^(2-)` required to oxidise 6 mol of `Cu_(3)P` to `CuSO_(4)` and `H_(3)PO_(4)` is 11 mol.
    B
    The number of moles of `H_(2)SO_(4)` used in the reaction is 62
    C
    The number of moles of `Cr_(2)(SO_(4))_(3)` formed in the reaction is 11
    D
    The number of moles of `K_(2)SO_(4)` formed in the reaction is 11

  • Which of the following statements is/are correct about the reaction. H_(2)SO_(4)+Cu_(3)P+Cr_(2)O_(7)^(2-)toCuSO_(4)+H_(3)PO_(4)+2Cr^(3+)

    A
    The number of moles of `Cr_(2)O_(7)^(2-)` required to oxidise 6 " mol of "`Cu_(3)P` to `CuSO_(4)` and `H_(2)PO_(4)` is 11 mol.
    B
    The number of moles of `H_(2)SO_(4)` used in the reaction is
    `62`.
    C
    The number of moles of `Cr_(2)(SO_(4))_(3)` formed in the reaction is 11.
    D
    The number of moles of `K_(2)SO_(4)` formed in the reaction is 11.

  • Which of the following salts produces nitrogen by decomposition ? I. Pb(NO_(3))_(2) II. NH_(4)NO_(2) III. NaN_(3) IV. (NH_(4))_(2) Cr_(2)O_(7)

    A
    I and III only
    B
    II and III only
    C
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    D
    II, III and IV only

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