The worst expected symptoms for humans when concentration of carbon monoxide reaches 8% of air is which of the following?
a. no adverse effects for up to 8 hours of exposure
b. dizziness after 45 minutes of exposure
c. nausea, headache, and dizziness after 20 minutes of exposure
d. unconsciousness or near unconsciousness after only a few minutes
Solution | Posted 08/10/20
d. unconsciousness or near unconsciousness after only a few minutes, per NFPA 12 Table G.1.
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