危険物乙4・乙種全類 一問一答問題集

In-app purchases
Content rating
Everyone
5+
Downloads
Content rating
Everyone
In-App Purchases
Learn more
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

Continue your hazardous materials handling exam preparation without hesitation until you pass.

This app is a question-and-answer practice test that covers the scope of the Class B Hazardous Materials Handler exam, with a total of 680 questions for Class B1-6 (280 questions for the selected Class 1, consisting of 200 common questions and 80 category-specific questions) and a mock exam in the format of the actual exam. The questions are independently created based on the Fire Service Act, related laws and regulations, Fire and Disaster Management Agency materials, and the exam subjects and number of questions published by the Fire Service Examination Research Center. These are not reproductions of actual exam questions.

■ Total of 680 questions for Class B1-6 (280 questions for the selected Class 1, consisting of 200 common questions and 80 category-specific questions)
Explanations are provided for all answer choices, not just the correct answer. You can switch between studying Class B1 through Class B6.

■ Mock exam in the format of the actual exam
Supports mock exams with 35 questions normally and 10 questions for subject exemptions. You can check your current position in each subject according to the passing criteria of 60% or higher in each subject.

■ Skimming Learning
This learning mode automatically displays answers and allows you to proceed, so you only need to browse. The display time automatically adjusts according to the amount of text, and you can also change the average speed to suit your needs.

■ Study Plan & Weakness Countermeasures
You can use daily goals calculated backward from the exam date, weak points, unanswered questions, and your learning history. Just before the exam, a message reviewing your learning up to that point will be displayed.

■ 10 Questions Free & No Ads
Try the first 10 questions for free. All questions and features can be unlocked with a one-time purchase of 500 yen. There are no subscriptions, ads, or account registration. Purchase recovery is also supported.

■ Anonymous Error Reporting
You can report errors in questions and explanations anonymously from within the app. No personally identifiable account information is collected.

■ Relationship between Information Sources and Examination Implementing Organizations
- Japan Fire Service Examination Research Center https://www.shoubo-shiken.or.jp/kikenbutsu/
- e-Gov Law Search (Fire Service Act) https://laws.e-gov.go.jp/law/323AC1000000186
- Ministry of Internal Affairs and Communications Fire and Disaster Management Agency "What are Hazardous Materials?" https://www.fdma.go.jp/laws/laws/laws003.html

This app is an unofficial learning app created by Particles and Waves. It is not affiliated with, and does not represent, the Japan Fire Service Examination Research Center, the Ministry of Internal Affairs and Communications Fire and Disaster Management Agency, or any other government agency. Please be sure to check the official website for exam dates, application procedures, and the latest regulations.

Supervised by a holder of a Class A Hazardous Materials Handler qualification.
From Class B4 to Class B1-6. A total of 680 questions across all classes, with 280 questions per class. Practice tests and explanations of all answer choices to prepare for the exam.
Updated on
Aug 29, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Location, Financial info and 2 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

- You can now review question corrections from the home screen.
- Updated internal SDKs for Android compatibility and stability.