CIH General 3

Question 1

Which sampling strategy is used to characterize the highest likely exposure a worker experiences?

Accepted Answer

Worst-case sampling

Answer

Worst-case sampling intentionally selects conditions expected to produce maximum exposures for conservative risk assessment.

Question 2

A confined space that contains or has the potential to contain a serious atmospheric hazard is classified as which type?

Accepted Answer

Permit-required confined space

Answer

OSHA defines a permit-required confined space as one with actual or potential serious safety or health hazards requiring a written entry permit.

Question 3

What does the term 'bioavailability' mean in the context of occupational toxicology?

Accepted Answer

The fraction of an absorbed dose that reaches systemic circulation

Answer

Bioavailability is the proportion of an administered substance that enters circulation and can exert biological effects.

Question 4

In industrial hygiene statistics, what does the geometric mean better represent compared to the arithmetic mean for lognormally distributed exposure data?

Accepted Answer

The central tendency of right-skewed data

Answer

Airborne exposure data are typically lognormally distributed, and the geometric mean better represents the central tendency of such skewed datasets.

Question 5

Which route of entry is generally considered the most significant pathway for occupational chemical exposure?

Accepted Answer

Inhalation

Answer

Inhalation is typically the most important route because workers continuously breathe workplace air containing contaminants.

CIH - Certified Industrial Hygienist Exam Practice Test

CIH - Certified Industrial Hygienist Exam Practice Test

CIH General 3