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Free CIH Practice Test

Pass the Certified Industrial Hygienist exam with confidence.

Start with a free CIH practice test and build exam-ready confidence for the Certified Industrial Hygienist exam.

4.9/5 from 2,400+ candidates
No signup to begin No credit card Instant scoring
1000+CIH Questions
3Exam Domains
10Free Questions
2026Updated
What you get

Everything your CIH certification prep needs

Practice expert-vetted questions, find your weak domains, and turn every mistake into a focused review plan.

Expert-vetted questions

Every question is reviewed by an experienced CIH professional for clarity, accuracy and practical exam relevance.

See what to study next

Domain analytics show which parts of the exam blueprint are holding you back.

Turn mistakes into confidence

Missed questions become a review list, so nervous guessing turns into focused repetition.

1,000+ exam-realistic questions
All 3 CIH domains
Weighted to the exam blueprint
Clear answer explanations
Updated for the 2026 exam
Instant, one-time access
Know where you stand

Your exam readiness

Track your readiness, domain strengths, and recent results at a glance.

Your exam readiness

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Keep practicing to build consistency and confidence.
Domain performance
Recent quiz performance

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Your progress at a glance

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This is a preview of your analytics Track your real exam readiness, weak domains, and quiz history with Fast Track and Pass Confidence.
Study by domain

Practice the CIH exam by domain

1. Exposure Assessment Principles and Practice

Key exam domain

Identify weak areas and improve with focused review.

Start Practicing

2. Control Selection, Recommendation/Implementation, and Validation

Key exam domain

Identify weak areas and improve with focused review.

Start Practicing

3. Risk Management

Key exam domain

Identify weak areas and improve with focused review.

Start Practicing
Built for practice, not passive reading Active recall and repetition build real exam-day readiness.
Written to match the real exam Every question mirrors the style, difficulty, and phrasing of the actual CIH exam.
Aligned to the CIH blueprint Weighted across every exam domain, so you practice exactly what's tested.
Choose your prep window

Pick the plan that matches your exam date

Tell us when your exam is and the plan that fits lights up. Every plan unlocks the full question bank; analytics and longer access scale with your timeline.

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Before you decide

Frequently asked questions

Straight answers about the CIH exam, the questions, pricing, the free trial, and how this fits your prep.

The CIH exam spans 3 domains - Exposure Assessment Principles and Practice, Control Selection, Recommendation/Implementation, and Validation, and Risk Management. Every practice question maps to one of them, so you train on exactly what's tested.

No - and that matters. These are original practice questions written to mirror the style, difficulty, and domain coverage of the CIH exam blueprint. We never distribute actual exam content, so practicing here keeps you fully compliant with official exam policies.

No. CIH Exam Prep is an independent study resource for Certified Industrial Hygienist (CIH). It is not affiliated with, sponsored by, or endorsed by the official certifying body or exam administrator.

What candidates say

Trusted by CIH candidates

Real feedback from CIH candidates on Reddit.

★★★★★
Sourced from Reddit

"wasnt sure this site would be enough on its own but the practice questions for exposure assessment were closer to the real thing than anything else i tried. passed first attempt. quietly relieved."

r/industrialhygiene Posted on Reddit
★★★★★
Sourced from Reddit

"honestly i put off studying for way longer than i should have and was definately behind when i finally got serious. found cihexam.web.app maybe six weeks out. the way it broke down control selection and flagged which areas i kept getting wrong was the only reason i felt ready walking in."

r/occupationalhealth Posted on Reddit
★★★★★
Sourced from Reddit

"the mock exams are what got me thru. i kept bombing risk management questions and doing full-length tests made it obvious pretty fast. wouldnt have caught that gap otherwise."

r/industrialhygiene Posted on Reddit

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1,000+ exam-style questions in every plan