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The prussian blue colour obtained during...

The prussian blue colour obtained during the test of nitrogen by lassaigne's test is due to the formation of:

A

`Fe_(4)[Fe(CN)_(6)]_(3)`

B

`Na_(3)[Fe(CN)_(6)]`

C

`Fe(CN)_(3)`

D

`Na_(4)[Fe(CN)_(5)NOS]`

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The correct Answer is:
A
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