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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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