A 'breath test' used by traffic police to check drunken driving uses?
A. Tumeric on filter paper
B. Silica gel coated with saliva nitrate
C. Potassium permanganate-sulphuric acid
D. Potassium dichromatic-sulphuric acid
Please explain why the answer is D and not C
D. Potassium dichromatic-sulphuric acid
It a test to check the presence of alcohol in a person's blood & carried out on samples of breath provided by the person. It is done with the help of filter paper made of Potassium dichromate-sulfuric acid.
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