If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur.
Question: If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur.
[A].
50
500
1000
3000 (i.e. 0.3%)
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.