危険物乙4(おつよん)全問解説 - 分野別一問一答と過去問

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Everyone 10+
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About this app

The definitive version of the app for Hazardous Materials Handler Class B Class 4 and Otsu 4 Countermeasures! Contains 618 frequently asked questions ranging from basic Q&A to the actual format.
All questions have detailed explanations. There is also a function that allows you to review the checked questions at once.

In addition, a page titled "How to study Dangerous Goods 4" which explains in detail how to study Dangerous Goods 4 is also included. A must-read/must-see. Please use all means!

This app, ``Dangerous Goods Otsu 4 All Questions Explanation - 618 carefully selected questions from the basic Q&A to the actual format'' is free. You can use all functions and all problems for free.
A strong ally for acquiring qualifications and studying for exams. If you want to take Hazardous Materials Handler Otsu 4, install this free app now!
Updated on
Jun 11, 2024

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.
This app may share these data types with third parties
Location, App activity and 2 others
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
Data can’t be deleted

What's new

たくさんの応援レビューありがとうございます!とても嬉しいです!
・一部の機種において文字が小さめに表示されたいたものを、少し大きく表示するように改善しました!
・いくつかの問題の収録内容を加筆・修正しました
 - 基礎的な物理・化学②>熱量と比熱>第5問
 - 危険物の性質・火災予防・消火>危険物の分類 その1>第3問
 - 危険物に関する法令①>製造所等の区分>第5問
 - 【本番演習】(五問択一形式)>危険物に関する法令 その7>第2問
・アプリ内の設定画面から広告の音量を変更できるようになりました
これからも人気の本アプリ「危険物乙4全問解説」を宜しくお願いします!