It is an application to efficiently pass the Class A hazardous materials handler test.
Carefully selected questions that often appear in the exam.
You can study efficiently in the gap time.
All 500 questions have explanations.

Please use it as a reference book for the Class A Hazardous Materials Handling Examination or as a past problem + α.
It is also recommended to use this app as a reconfirmation just before the test.
We hope you find it useful.


1: Laws and regulations regarding dangerous goods ... 160 questions
2: Physics and Chemistry ... 110 questions
3: Nature, fire prevention, fire extinguishing method ... 230 questions
(500 questions in total)