1.

{:("Microcosmic salt"overset(Delta)rarr.,underset(("Transparent"))('M')+H_(2)O+NH_(3)(uarr)),(,""darrCoO),(,'N'("Blue bead")):} Compound M and N are:

Answer»

`Na_(3)PO_(4)` and `NaCoPO_(4)`
`NaPO_(3)` and `NaCoPO_(4)`
`Na(NH_(4))HPO_(4)` and `Co(PO_(3))_(2)`
`NaPO_(3)` and `Co(PO_(3))_(2)`

Answer :B


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