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During Lassaigne's test S and N present ...

During Lassaigne's test S and N present in an organic compound change into :

A

`Na_(2)S " and " NaCN`

B

`Na_(2) SO_(4) " and " NaCN`

C

`Na_(2)S " and " NaCNO`

D

`NaCN " and " NaCNO`

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