FREE STSC Health Hazards and Hygiene Questions and Answers

Question 1

A worker on a demolition project is experiencing confusion, slurred speech, and has hot, dry skin.
The supervisor suspects a heat-related illness.
Which condition is most likely, and what is the most critical immediate action?

Accepted Answer

Heat stroke; call 911 immediately and begin cooling the worker.

Answer

Heat exhaustion; move the worker to a cool area and provide water.

Answer

Heat cramps; have the worker gently stretch the affected muscles.

Answer

Heat rash; apply a soothing lotion and allow the skin to air dry.

Question 2

According to OSHA standard 29 CFR 1926.62, which of the following triggers the requirement for an employer to implement specific compliance activities, such as periodic air monitoring and medical surveillance, for lead exposure?

Accepted Answer

When employee exposure meets or exceeds the Action Level (AL) of 30 µg/m³.

Answer

Any detectable level of lead on the worksite.

Answer

When employee exposure meets or exceeds the Permissible Exposure Limit (PEL) of 50 µg/m³.

Answer

Only when an employee shows physical symptoms of lead poisoning.

Question 3

A supervisor is setting up a new construction site that will have 35 employees working during the main shift. According to OSHA standard 1926.51, what is the minimum number of toilet facilities required?

Accepted Answer

2 toilets

Answer

1 toilet

Answer

1 toilet seat and 1 urinal

Answer

3 toilets

Question 4

During an asbestos abatement project, which of the following is a critical engineering control used to prevent the spread of asbestos fibers outside the work area?

Accepted Answer

Establishing a negative air pressure enclosure with HEPA filtration.

Answer

Requiring all workers to wear N-100 respirators.

Answer

Wetting the asbestos-containing material (ACM) during removal.

Answer

Double-bagging all asbestos waste in clearly labeled disposal bags.

Question 5

Which of the following is a key component of a basic hygiene program on a construction site to prevent the spread of infectious diseases?

Accepted Answer

Providing accessible handwashing stations with soap and clean water.

Answer

Providing hand sanitizer as the primary means for hand cleaning.

Answer

Encouraging workers to share tools to build team cohesion.

Answer

Scheduling sanitation facilities to be cleaned on a monthly basis.

Question 6

OSHA's standard for respirable crystalline silica in construction (1926.1153) established a new, lower Permissible Exposure Limit (PEL). What is the 8-hour time-weighted average (TWA) PEL for respirable crystalline silica?

Accepted Answer

50 micrograms per cubic meter (µg/m³)

Answer

25 micrograms per cubic meter (µg/m³)

Answer

100 micrograms per cubic meter (µg/m³)

Answer

250 micrograms per cubic meter (µg/m³)

A worker on a demolition project is experiencing confusion, slurred speech, and has hot, dry skin.The supervisor suspects a heat-related illness.Which condition is most likely, and what is the most critical immediate action?

A worker on a demolition project is experiencing confusion, slurred speech, and has hot, dry skin.
The supervisor suspects a heat-related illness.
Which condition is most likely, and what is the most critical immediate action?