Free OHST Exam Questions That Helps Candidates Pass

Comprehensive and Detailed Explanation:

The correct answer is B.

Biological hazards include harmful microorganisms such as bacteria, viruses, fungi, and parasites that can cause disease or infection.

OHST professionals assess biological risks in workplaces such as healthcare facilities, laboratories, food processing plants, and waste management areas. Controls include hygiene practices, sanitation, vaccination programs, ventilation, and PPE.

Understanding biological hazards is essential for preventing occupational illnesses and maintaining safe working environments.

Comprehensive and Detailed Explanation:

20 ÷ 5 = 4 tasks per hour

Therefore, the correct answer is C.

Such calculations help OHST professionals evaluate workload distribution and potential fatigue risks.

Comprehensive and Detailed Explanation:

The correct answer is C.

Chronic health effects develop over a long period of repeated or continuous exposure. Asbestos exposure is a well-known example that can lead to diseases such as asbestosis, lung cancer, and mesothelioma after prolonged exposure.

Unlike acute exposures, chronic exposures may not produce immediate symptoms, making them more difficult to detect early. This is why industrial hygiene programs focus on monitoring, exposure limits, and preventive controls.

OHST professionals are responsible for identifying long-term exposure risks and ensuring proper controls such as ventilation, substitution, containment, and PPE are in place.

Understanding the difference between acute and chronic effects is essential for protecting workers from both immediate and long-term health hazards.

Comprehensive and Detailed Explanation:

The correct answer is B.

Open communication and employee participation encourage hazard reporting, trust, and engagement in safety programs.

OHST professionals use this approach to strengthen safety culture and reduce incidents.

Comprehensive and Detailed Explanation:

The correct answer is B.

Training effectiveness is measured by evaluating whether employees understand and can apply what they learned. This may include tests, observations, demonstrations, or performance assessments.

OHST professionals use evaluation results to improve training programs and ensure employees can perform tasks safely and correctly.

Without evaluation, organizations cannot confirm whether training goals have been achieved.