CIH General 2

Question 1

Which OSHA permissible exposure limit (PEL) standard applies to general industry for airborne contaminants?

Accepted Answer

29 CFR 1910.1000

Answer

29 CFR 1910.1000 establishes PELs for air contaminants in general industry workplaces.

Question 2

A hierarchy of controls lists elimination, substitution, engineering controls, administrative controls, and PPE. Which is considered MOST effective?

Accepted Answer

Elimination

Answer

Elimination physically removes the hazard at the source and is the most protective control measure.

Question 3

The ACGIH TLV-TWA represents the average airborne concentration over which time period?

Accepted Answer

8-hour workday

Answer

The TLV-TWA is a time-weighted average concentration for a conventional 8-hour workday.

Question 4

Industrial hygiene practice follows which fundamental approach to protecting worker health?

Accepted Answer

Anticipation, Recognition, Evaluation, Control

Answer

The AREC model—Anticipation, Recognition, Evaluation, and Control—is the core framework of industrial hygiene practice.

Question 5

When evaluating noise exposures, OSHA uses which exchange rate (doubling rate) in its hearing conservation standard?

Accepted Answer

5 dB

Answer

OSHA's noise standard uses a 5 dB exchange rate, meaning allowable exposure time halves for every 5 dB increase.

CIH - Certified Industrial Hygienist Exam Practice Test