Question:

Appearance of blood red colour on treatment of the sodium fusion extract of an organic compound with FeSO4 in presence of concentrated H2SO4 indicates the presence of element(s).

Updated On: Nov 13, 2024
  • N & S

  • Br
  • S
  • N

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The Correct Option is A

Solution and Explanation


The appearance of a blood red color upon this reaction indicates the presence of both nitrogen and sulphur in the compound, as they combine to form thiocyanate ions (SCN), which react with Fe3+ to produce Fe(SCN)3 with the characteristic blood red color.

So, the correct answer is : N & S.

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Concepts Used:

Classification of Organic Compounds

Organic Compounds can be classified into:

Classification based on the structure:

The classification of organic compounds is based on structure such as:

  1. Acyclic or open chain compounds - Acyclic compounds are just opposite to cyclic compounds because their molecules don’t form any ring. It is called open-chain compounds because they have a linear structure.
  2. Cyclic or closed chain compounds - Cyclic compounds are also known as “Ring compounds.”