A ‘breath test’ used by traffic police to check drunken driving uses ____?5
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Q: A ‘breath test’ used by traffic police to check drunken driving uses ____?
- 1Turmeric on filter paperfalse
- 2Silica gel coated with silver nitratefalse
- 3potassium permanganate-sulphuric acidfalse
- 4Potassium dichromatic-sulphuric acidtrue
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