CHMM Occupational Health And Safety 5

Question 1

During a chemical emergency response, an incident commander notices a greenish-yellow vapor cloud. Which chemical is MOST likely responsible?

Accepted Answer

Chlorine gas

Answer

Chlorine gas has a distinctive greenish-yellow color and a sharp, bleach-like odor, making visual identification possible during releases.

Question 2

Which route of chemical exposure is responsible for the MAJORITY of occupational illness cases involving volatile organic compounds (VOCs)?

Accepted Answer

Inhalation

Answer

Inhalation is the primary route of exposure for VOCs in occupational settings because volatile chemicals readily become airborne and are inhaled during breathing.

Question 3

What is the purpose of biological monitoring in an occupational health program?

Accepted Answer

To measure the actual internal dose of a toxicant or its metabolites in workers' blood, urine, or exhaled air

Answer

Biological monitoring measures internal body burden via biomarkers in biological specimens, reflecting actual absorbed dose from all exposure routes combined.

Question 4

Under OSHA's noise standard (29 CFR 1910.95), at what 8-hour TWA noise level must employers implement a hearing conservation program?

Accepted Answer

85 dBA

Answer

An action level of 85 dBA (8-hr TWA) triggers the hearing conservation program, including monitoring, audiometric testing, training, and hearing protector provision.

Question 5

Which of the following best describes the difference between acute and chronic toxicity?

Accepted Answer

Acute toxicity results from a single or short-term exposure; chronic toxicity results from repeated long-term exposure

Answer

Acute toxicity involves harmful effects from a single or short-term high-dose exposure, while chronic toxicity involves effects from repeated or continuous lower-dose exposures over time.

CHMM - Certified Hazardous Materials Manager Practice Test

CHMM - Certified Hazardous Materials Manager Practice Test

CHMM Occupational Health And Safety 5