COHN COHN Environmental and Industrial Hygiene 2

Question 1

Which route of entry is the most common pathway for occupational chemical exposures?

Accepted Answer

Inhalation

Answer

Inhalation is the primary route of entry for most workplace chemical exposures because airborne substances are readily drawn into the lungs.

Question 2

What does a noise dosimeter measure in an occupational setting?

Accepted Answer

A worker's cumulative noise exposure over a work shift

Answer

A noise dosimeter worn by a worker records the time-weighted average noise exposure over the entire shift to compare against OSHA's PEL of 90 dBA and action level of 85 dBA.

Question 3

What is the OSHA permissible exposure limit (PEL) for noise as an 8-hour time-weighted average (TWA)?

Accepted Answer

90 dBA

Answer

OSHA's PEL for occupational noise is 90 dBA as an 8-hour TWA, with engineering or administrative controls required when this limit is exceeded.

Question 4

What term describes the skin condition caused by repeated occupational contact with irritating chemicals?

Accepted Answer

Contact dermatitis

Answer

Contact dermatitis is the most common occupational skin disease, resulting from skin contact with irritating or sensitizing substances in the workplace.

Question 5

Which industrial hygiene sampling strategy determines the worst-case exposure for a worker during a particular task?

Accepted Answer

Worst-case or task-based sampling

Answer

Worst-case or task-based sampling focuses on the highest-exposure tasks to identify peak exposures that may exceed ceiling or short-term exposure limits (STELs).

COHN Exam Practice Test

COHN Exam Practice Test

COHN COHN Environmental and Industrial Hygiene 2