Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of N2 in contaminated air at which it acts as a natural asphyxiate is ≥ _____________ percent?
Correct answer: A. 84
- A. 84
- B. 88
- C. 80
- D. 92
Explanation
Normal air contains about 21% oxygen, but when nitrogen raises the total inert-gas fraction to about 84%, oxygen falls to roughly 16%, producing serious oxygen deficiency. Nitrogen is chemically inert but acts as an asphyxiant by displacement.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
Radioactive solid nuclear wastes are disposed off by _________________?
Which of the following is an adsorbent used for the removal of SO2 from gas/air ?
'Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the____________________?
Growth of ______________ is promoted by the presence of manganese in water?
The pH value of oxidised sewage is about_____________________?
Arsenic pollutant is not generated in _______________ industries?