Free OHST Practice Tests (2026)
Start with the free diagnostic to see where you stand, then practice in tutor or timed mode. Full-length simulations match the real OHST.
Diagnostics
OHST Practice Test 1
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
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OHST Practice Test 2
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testOHST Practice Test 3
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testOHST Practice Test 4
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testOHST Practice Test 5
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testOHST Practice Test 6
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testOHST Practice Test 7
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testOHST Practice Test 8
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testOHST Practice Test 9
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testOHST Practice Test 10
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testOHST Practice Test 11
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testOHST Practice Test 12
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testOHST Practice Test 13
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testOHST Practice Test 14
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testOHST Practice Test 15
10 questions · 12 min10 free OHST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testHow these OHST practice tests match the real exam
The tests draw on every OHST content area, weighted like the official outline:
- Fundamental Math and Science and Business Calculations/Analysis (about 11.3% of the exam)
- Safety, Health, and Environmental Programs (Includes Risk Management) (about 19.5% of the exam)
- Hazard Identification and Control (about 21.1% of the exam)
- Health Hazards and Basic Industrial Hygiene (about 15.8% of the exam)
- Emergency Preparedness, Fire Prevention, and Security (about 11.5% of the exam)
- Organizational Communication and Training/Education (about 12.6% of the exam)
- Ethics and Professional Conduct (about 8.2% of the exam)
Use tutor mode to see the explanation after each answer, or timed mode to practise at real exam pace. Every answer comes with an explanation of why it is right and why the other options are wrong.