1.

On a cold winter night, the persons sleeping in a room with closed door and windows with a coal fire burning inside may die due to the excessive accumulation of : (a) nitrogen monoxide (b) nitrogen dioxide (c) carbon dioxide (d) carbon monoxide

Answer»

On a cold winter night, the persons sleeping in a room with closed door and windows with a coal fire burning inside may die due to the excessive accumulation of :

(a) nitrogen monoxide

(b) nitrogen dioxide

(c) carbon dioxide

(d) carbon monoxide



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