In Lassaigne's test, the following reage...

In Lassaigne's test, the following reagent is used to test the presence of both N and S.

A

`H_(2)S`

B

`NH_(4)CNS`

C

`K_(4)Fe(CN)_(6)`

D

`K_(3)Fe(CN)_(6)`

Verified by Experts

The correct Answer is:

D

`3FeCl_(2) + 2K_(3)[Fe(CN)_(6)] to Fe_(3)[underset("Blue colour")((CN))_(6)]_(2) + 6KCl`

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