NEET2025ChemistryGeneral Organic ChemistryActual
Which one of the following reactions does NOT belong to "Lassaigne's test" ?
Options
- ANa + C + N [ ] NaCN
- B2 Na + S [ ] Na ₂ ~S
- CNa + X [ ] + NaX
- D2 CuO + C [ ] 2 Cu + CO ₂
Correct answer
D. 2 CuO + C [ ] 2 Cu + CO ₂
Step-by-step solution
2 CuO + C [ ] 2 Cu + CO ₂ "Lassaigne's test" is used to detect Nitrogen, Halogen, Sulphur, Phosphorus. 4^ th option is detection of carbon, it is not "Lassaigne's test".