Free Certified Industrial Hygienist (CIH) Questions and Answers

Question 1

Why Are Hazard Control Strategies (Elimination, Substitution, and Engineering/Design Controls) More Effective At Preventing Injuries Than Exposure Control Strategies (Administrative, Work Practices, And PPE)?

Accepted Answer

They work only as long as people behave

Answer

Exposure control strategies (administrative, work practices, and PPE) are generally considered less effective in preventing injuries than hazard control strategies (elimination, substitution, and engineering/design controls). This is because exposure control strategies rely heavily on human behavior and compliance, and their effectiveness is dependent on consistent adherence to guidelines and proper use of protective measures. On the other hand, hazard control strategies act directly on the source of the hazard, either by eliminating it, substituting it with less hazardous alternatives, or modifying the work environment or equipment to minimize exposure. These hazard control strategies are inherently more reliable and consistent in preventing injuries as they reduce the reliance on human action and compliance.

Question 2

OSHA advises maintaining temperatures between ____ and ____ degrees Fahrenheit and maintaining humidity levels between ____ and .

Accepted Answer

68-76 degrees; 20%-60%

Answer

OSHA (Occupational Safety and Health Administration) recommends temperature control in the range of 68-76 degrees Fahrenheit and humidity control in the range of 20%-60% for indoor workplaces. These recommended ranges aim to provide a comfortable and safe working environment for employees and help prevent health issues related to extreme temperatures and humidity levels. By maintaining appropriate temperature and humidity conditions, employers can promote the well-being and productivity of their workers.

Question 3

Which of the following results from the condensation of a solid's volatile constituent in cold air?

Accepted Answer

Fumes

Answer

When a solid material is heated to a high temperature, it can undergo sublimation or volatilization, transitioning directly from a solid to a gaseous state without passing through a liquid phase. As the volatilized particles mix with the surrounding cool air, they condense and form fine airborne particles or gases known as fumes. These fumes may contain various substances, some of which could be hazardous to health depending on the nature of the material and the conditions of the exposure. Proper ventilation and safety measures are important when dealing with substances that can produce fumes to avoid potential health risks.

Question 4

Which of the following exposure routes is the most typical?

Accepted Answer

Inhalation

Answer

Inhalation is the process of breathing in or inhaling substances or particles present in the air. It is a common route of exposure to various substances, including gases, vapors, dust, fumes, and aerosols. When substances are inhaled, they can enter the respiratory system and be absorbed into the bloodstream, potentially leading to various health effects, depending on the nature and toxicity of the substance.

Question 5

Which of the following "hierarchy of controls" strategies puts the most emphasis on eliminating the risk's root cause?

Accepted Answer

Elimination

Answer

In the Hierarchy of Controls, different strategies are used to minimize workplace hazards and risks. Elimination is the most effective control measure as it involves completely removing the hazard or hazardous process from the workplace. By eliminating the hazard, the risk of potential harm is entirely eradicated, and employees are no longer exposed to the danger.

CIH - Certified Industrial Hygienist Exam Practice Test

CIH - Certified Industrial Hygienist Exam Practice Test

Free Certified Industrial Hygienist (CIH) Questions and Answers