During the chemical execution of Lassaigne's test, the appearance of a distinct blood-red coloration upon the introduction of ferric chloride directly proves the simultaneous presence of which two elements in the tested organic compound?
University of Ilorin CHM102 2025A past question
- Nitrogen and Oxygen
- Nitrogen and Sulphur
- Sulphur and Halogens
- Nitrogen and Phosphorus
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