MCQ
In organic compounds when N and S are present together the red colour formed is due to formation of which of the following compound?
  • A
    $Fe _4\left[ Fe ( CN )_6\right]_3$
  • $[ Fe ( SCN )]^{+2}$
  • C
    KSCN
  • D
    NaCN

Answer

Correct option: B.
$[ Fe ( SCN )]^{+2}$
B

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