Free OHST Exam Questions That Helps Candidates Pass

Comprehensive and Detailed Explanation:

The correct answer is C.

Engineering controls reduce hazards through physical changes such as machine guards, ventilation systems, or automation. These controls are more reliable because they do not depend on human behavior.

OHST professionals prioritize engineering controls for long-term safety improvement.

Comprehensive and Detailed Explanation:

The correct answer is B.

Solvent vapors are chemical hazards that can cause respiratory irritation, dizziness, or long-term organ damage depending on exposure levels.

OHST professionals assess chemical hazards through exposure monitoring, safety data sheets (SDS), and workplace evaluations. Controls include ventilation, substitution, and PPE.

Understanding chemical hazards is essential for preventing occupational illness.

Comprehensive and Detailed Explanation:

The correct answer is C.

Continuous improvement aims to consistently enhance safety systems, reduce risks, and prevent incidents over time.

OHST professionals use audits, feedback, and performance data to improve safety programs.

Comprehensive and Detailed Explanation:

The correct answer is B.

When a fire is discovered, prompt activation of the alarm system and implementation of established emergency procedures are critical. Early notification allows occupants to begin evacuation and enables emergency responders to react quickly. Delays can increase the risk of injury, property damage, and fire spread.

Emergency action plans should clearly define responsibilities, evacuation routes, assembly locations, communication methods, and accountability procedures. Employees should receive training on recognizing alarm signals and responding appropriately.

OHST professionals often participate in emergency planning, training, and drills. They help ensure that employees understand emergency procedures and that systems function effectively during actual emergencies.

While some trained individuals may use portable fire extinguishers under specific circumstances, life safety remains the top priority. Employees should never place themselves at unnecessary risk. Effective emergency preparedness relies on planning, training, communication, and regular practice through drills and exercises.

Comprehensive and Detailed Explanation:

The correct answer is C.

A near-miss is an unplanned event that did not result in injury, illness, or damage but had the potential to do so. Near-misses are critical indicators of system weaknesses and are valuable for preventing future incidents.

Examples include a falling object that narrowly misses a worker, a slip without injury, or a machine malfunction that is corrected before harm occurs. Reporting near-misses helps organizations identify hazards before they result in actual losses.

OHST professionals encourage near-miss reporting as part of proactive safety management. These reports are analyzed to identify root causes and implement corrective actions. Organizations that actively investigate near-misses often experience lower injury rates because they address hazards early.

A strong safety culture promotes reporting without fear of blame, allowing continuous improvement in hazard identification and control systems.