Presence of nitrogen in high concentration in contaminated air reduces partial p

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Question

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 asphyxant is ≥ __________ percent.

Options:

A . 88

B . 84

C . 80

D . 92

Answer: Option B

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