Which gas leads to suffocation and dizziness to the occupants when an increase in its quantity in the air.(a) Carbon monoxide(b) Hydrogen(c) Nitrogen(d) Carbon dioxideThe question was asked during an interview for a job.My query is from Components in chapter Important Building Components of Construction & Building Materials

Which gas leads to suffocation and dizziness to the occupants when an

1.	Which gas leads to suffocation and dizziness to the occupants when an increase in its quantity in the air.(a) Carbon monoxide(b) Hydrogen(c) Nitrogen(d) Carbon dioxideThe question was asked during an interview for a job.My query is from Components in chapter Important Building Components of Construction & Building Materials
Answer» The correct CHOICE is (d) Carbon dioxide To explain: If the room is not properly ventilated, there will be an EXCESSIVE quantity of carbon dioxide in the air. It is observed that breathing is difficult when the amount of carbon dioxide by volume is about 6% and a man loses consciousness when it REACHES about 10% or so.

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