FREE Certified Industrial Hygienist (CIH) General Questions and Answers

Question 1

Although this measurement doesn't always indicate how much of a chemical will be absorbed, it does indicate how much can be inhaled throughout the course of a workday:

Accepted Answer

Time Weighted Average (TWA)

Answer

The Time Weighted Average (TWA) is a common metric used in industrial hygiene to represent an average exposure to a hazardous substance over a specific period, typically an 8-hour workday. It indicates the average concentration of a substance in the air that a worker can inhale over that period. While it quantifies inhalation exposure, it doesn't directly account for absorption through other routes like skin contact, which is why it doesn't always indicate total absorbed dose.

Question 2

All of the following areas of study are carried out to identify potential adverse effects on the musculoskeletal system, WITH THE EXCEPTION of:

Accepted Answer

group dynamics

Answer

Ergonomic studies and assessments aim to identify factors that contribute to musculoskeletal disorders (MSDs). Incentive pay systems, performance monitoring, and production demands can all influence work pace, posture, repetition, and force, thereby directly impacting the musculoskeletal system. Group dynamics, while important for team cohesion and psychological well-being, is generally not a direct factor studied for its adverse effects on the physical musculoskeletal system in ergonomics.

Question 3

Each of the following, EXCEPT:, is a significant goal of the science of epidemiology, according to Leon Gordis.

Accepted Answer

To determine effects of toxins on control populations of animals

Answer

Epidemiology is the study of the distribution and determinants of health-related states or events in specified populations, and the application of this study to the control of health problems. Its goals, as described by Leon Gordis, include discovering disease etiology, determining disease extent, and evaluating interventions in human populations. Determining effects of toxins on *control populations of animals* falls under toxicology or experimental research, not the primary domain of human epidemiology.

Question 4

This illness is brought on by being in an atmosphere where the body cannot adequately cool itself, right?

Accepted Answer

heatstroke

Answer

Heatstroke is the most severe heat-related illness and a medical emergency. It occurs when the body's temperature regulation system fails, leading to a dangerously high core body temperature (typically above 104°F or 40°C) and the inability to cool itself. This failure to adequately cool results in central nervous system dysfunction and can be fatal if not treated immediately.

Question 5

All of the following should be known to, and all competent individuals in charge of scaffold work should be capable of identifying and correcting hazards associated to them, EXCEPT:

Accepted Answer

soil conditions

Answer

A competent person for scaffold work, as defined by OSHA, must be knowledgeable about the specific hazards associated with scaffold construction, use, and dismantling. This includes understanding fall protection, proper scaffold assembly, and ensuring structural integrity. While soil conditions are crucial for proper scaffold foundation and stability, they are typically assessed by a competent person for *foundations* or *excavations*, not necessarily the *scaffold competent person* themselves, whose primary focus is the scaffold structure and its immediate safety.

CIH - Certified Industrial Hygienist Exam Practice Test

CIH - Certified Industrial Hygienist Exam Practice Test

FREE Certified Industrial Hygienist (CIH) General Questions and Answers