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  4. Sodium fusion extract of an organic compound gives a blood red colouration with few drops of textFeCl text3 solution. This indicates the presence of

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Q. Sodium fusion extract of an organic compound gives a blood red colouration with few drops of $\text{FeCl}_{\text{3}}$ solution. This indicates the presence of

NTA AbhyasNTA Abhyas 2020Organic Chemistry – Some Basic Principles and Techniques

Solution:

The presence of both nitrogen and sulphur in the lassaigne's test in an organic compound shows a blood red colouration with $F e C l_{3}$ solution. This is due to the formation of NaCNS in the sodium fusion extract.