Practise Certified Industrial Hygienist (CIH) Examination with a short sample and answer explanations. These are independent learning materials, not official exam questions or a pass prediction.
Exam outline and official sources
Board for Global EHS Credentialing (BGC) · CIH Exam Blueprint based on the 2021 Job Analysis, effective April 1, 2022. This is the official blueprint established for this guide as of October 19, 2026; no later effective blueprint was identified. The assigned workbook label matches BGC's Certified Industrial Hygienist credential.
This original 20-question sample covers selected topics across the outline. It does not reproduce official exam questions or cover every tested topic.
- CIH Exam Blueprint
- Elements of the CIH Certification Scheme
- BGC Code of Ethics
- CIH Selected References
- 29 CFR 1910.1000 — Air contaminants
- OSHA Technical Manual — Personal Sampling for Air Contaminants
- NMAM Chapter SA — General Considerations for Sampling Airborne Contaminants
- NIOSH — Understand Noise Exposure
- CDC Principles of Epidemiology — Measures of Association
- CDC — Clinical Guidance for Carbon Monoxide Poisoning
- OSHA Technical Manual — Heat Stress
- NIOSH Health Hazard Evaluation Report 2023-0028-3396
- OSHA Technical Manual — Occupational Skin Exposure
- NIOSH — Hierarchy of Controls
- OSHA Technical Manual — Ventilation Investigation
- 29 CFR 1910.134 — Respiratory protection
- OSHA Technical Manual — Chemical Protective Clothing
- CDC — Radiation Safety
- NIOSH — Implement Your Ergonomic Program
- OSHA — Program Evaluation and Improvement
- NIOSH Occupational Exposure Sampling Strategy Manual, 1977
- NIOSH Method 7400 — Asbestos and Other Fibers by PCM, Issue 3
- NIOSH — Mold, Testing, and Remediation
- NIOSH Pocket Guide to Chemical Hazards — Introduction
- NIOSH — Consideration of Sampler Wall Deposits
- OSHA Technical Manual — Noise
- NIOSH — Acclimatization
- OSHA — Permissible Exposure Limits, Annotated Tables
- OSHA — Hazard Identification and Assessment
- OSHA — Education and Training
Certified Industrial Hygienist (CIH) Examination
Start with 20 free questions, then review the explanations and any topics you missed.
A worker's exposure is 60 ppm for 2 hours, 20 ppm for 3 hours, and zero for the remaining 3 hours of an 8-hour shift. What is the 8-hour time-weighted average?
Certified Industrial Hygienist (CIH) Examination
Flashcards
Exposure Assessment Principles and Practice
Task 3 — Similar exposure groups
Get started with Certified Industrial Hygienist (CIH) Examination
Purchase your plan, then choose the module to enable. Your plan renews until canceled.
Monthly exam plan
$147 / month
About $4.90 per day
Enable one exam module after payment
Published questions, flashcards and study tools
Renews until canceled
Yearly exam plan
$1337 / year
About $3.66 per day
Enable one exam module after payment
Published questions, flashcards and study tools
Renews until canceled
Found an issue? See our content policy and report a correction.