Forensic Medicine The chemical used for qualitative and quantitative assessment of alcohol in the expired air is: KCET 12 A Aniline B Diphenylamine C Potassium ferrocyanide D Potassium dichromate 💡 Explanation The chemical used for qualitative and quantitative assessment of alcohol in the expired air is: KCET 12 ✓ Correct Answer: D. Potassium dichromate