A breath test used by traffic police to check for drunken driving detects which substance?
- A. Potassium dichromate-sulphuric acid
- B. Potassium permanganate-sulphuric acid
- C. Turmeric on filter paper
- D. Silica gel coated with silver nitrate
- Potassium dichromate-sulphuric acid
Please select one of the options to reveal the correct answer.