Question

the maximum osha permissible exposure limit (pel) for carbon monoxide is ______ parts per million (ppm) of air for an eight-hour period.

a. 20

b. 30

c. 40

d. 50

Explanation:

OSHA's PEL for carbon monoxide (8 - hour period) is 50 ppm. This is a regulatory standard in occupational health, part of safety and health regulations (related to Medicine and Health or Environmental Sciences, but the key is recalling the OSHA limit).

Answer:

d. 50