Question
Which one of the following reactions does NOT belong to "Lassaigne's test" ?
NEET
Chemistry
General Organic Chemistry
2025
NEET 2025
NEET Chemistry Question (2025) — Solution
Options
- A. Na + C + N [ ] NaCN
- B. 2 Na + S [ ] Na _2 ~S
- C. Na + X [ ] + NaX
- D. 2 CuO + C [ ] 2 Cu + CO _2
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".
Related: Chemistry — General Organic Chemistry · All PYQ Banks