The Kjeldahl method is widely used for nitrogen estimation, but it fails for specific classes of compounds because their nitrogen cannot be quantitatively converted to ammonium sulphate. Which of the

Question

The Kjeldahl method is widely used for nitrogen estimation, but it fails for specific classes of compounds because their nitrogen cannot be quantitatively converted to ammonium sulphate. Which of the following compounds CANNOT be estimated using Kjeldahl's standard method?

Prashant Kotian · Accepted Answer

Correct answer: D. Kjeldahl's method is fundamentally unsuited for compounds containing nitrogen in a heterocyclic ring (e.g., pyridine), or present in nitro (), nitroso (), or azo () functional groups, as these structures resist complete conversion to upon digestion.

💡 Solution & Explanation

Practice 22,000+ questions like this