Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
In Lassaigne’s test, a blue colour is obtained if the organic compound contains nitrogen. The blue colour is due to
ChemistryGeneral Organic ChemistryNEET
Options:
  • A K4[Fe(CN)6]
  • B Fe4[Fe(CN)6]3
  • C Na3[Fe(CN)6]
  • D Cu2[Fe(CN)6]
Solution:
2847 Upvotes Verified Answer
The correct answer is: Fe4[Fe(CN)6]3
In Lassaigne’s test, a blue colour is obtained if the organic compound contains nitrogen. The Prussian blue is due to Fe4[Fe(CN)6]3 is formed.

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.