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________________ gas hampers oxygen from reaching the brain.

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in Construction & Building Materials by (190k points)
________________ gas hampers oxygen from reaching the brain.

(a) Carbon dioxide

(b) Carbon monoxide

(c) Nitrogen peroxide

(d) Hydrogen

The question was asked during an internship interview.

My query is from Fire Resisting Materials in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

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Right choice is (b) Carbon monoxide

The best I can explain: Carbon monoxide is the most abundant of fires gases. It is invisible and odourless. Nitrogen dioxide is extremely toxic and it numbs or deadens the throat.

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