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In the Lassaigne’s test, the blood red c...

In the Lassaigne’s test, the blood red colouration is due to the formation of 

A

`Fe(CNS)_(2)`

B

NaCNS

C

`NH_(4)CNS`

D

`Fe(CNS)_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
Blood red colour is due to ferric thiocyanate (or sulphocyanide) which is blood red in colour.
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Knowledge Check

  • In Lassaignes test for nitrogen, the blue colour is due to the formation of

    A
    Potassium ferrocyanide
    B
    Sodium cyanide
    C
    Sodium ferrocyanide
    D
    Ferriferrocyanide

  • In Lassaigne's test for nitrogen,the blue colour is due to the formation of

    A
    Potassium ferrocyanide
    B
    Sodium cyanide
    C
    Sodium ferrocyanide
    D
    Ferri-ferrocyanide

  • In Lassaigne's test when both N and S are present, blood red colour is due to the formation of

    A
    ferric sulphocyanide
    B
    ferric cyanide
    C
    ferric ferrocyanide
    D
    none

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