MP Board · Class 11 · Chemistry · Organic Chemistry – Some Basic Principles and TechniquesThe Lassaigne's extract is tested with freshly prepared iron(II) sulfate and acidified with dilute sulfuric acid to detect the presence of:
Step-by-Step Solution
Nitrogen in an organic compound is detected by Lassaigne's test, where sodium fusion extract is treated with $FeSO_4$ and $H_2SO_4$ to form Prussian blue due to the formation of ferric ferrocyanide.
Detailed Options Breakdown
Option : Halogens
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Organic Chemistry – Some Basic Principles and Techniques.
Option 1: Nitrogen (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: Sulfur
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Organic Chemistry – Some Basic Principles and Techniques.
Option 3: Phosphorus
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Organic Chemistry – Some Basic Principles and Techniques.
💡 Study Guide: This question tests core syllabus concepts from Organic Chemistry – Some Basic Principles and Techniques. For formulas, key summaries, and mock exam reference guides, read the full Organic Chemistry – Some Basic Principles and Techniques Revision Notes.