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Question

Which of the following will give blood-red colour inLassaigne's test for nitrogen?
  1. PhNH2
  2. PhNO2
  3. SCN
  4. PhSO3H

A
PhNO2
B
PhSO3H
C
PhNH2
D
SCN
Solution
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Blood-red colour in Lassaigne's test for nitrogen is given by the compound which contains both S and N. Hence, (c) is correct option.

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