BPSC 66th Prelims Prelims 27 Dec 2020 Solved Paper

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Question : 42 of 150

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The breath test conducted by police to check drunken driver has which one of the following on the filter paper?

Potassium dichromate-sulfuric acid
Potassium permanganate sulfuric acid
Silica gel coated with silver nitrate
Turmeric
None of the above/More than one of the above

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