About 危険物乙４ 全問解説 - 独学TODAY
The definitive app for studying for the Class B Hazardous Materials Handler License, Category 4 (Otsu-yon)! From basic Q&A to exam-style questions, it features 618 frequently asked questions. All questions include...
The definitive app for studying for the Class B Hazardous Materials Handler License, Category 4 (Otsu-yon)! From basic Q&A to exam-style questions, it features 618 frequently asked questions.
All questions include detailed explanations. There's also a function to review checked questions later.
Don't miss the "Hazardous Materials Class B-4 Study Method" page, which provides detailed explanations on how to study for the Hazardous Materials Class B-4 exam!
This app, "Hazardous Materials Class B-4 Complete Question Explanation - Self-Study TODAY," is free to use.
If you are concerned about advertisements, we apologize, but please consider the paid "Serious Study Plan (Ad-Free)."
Terms of Use: https://apps.trips.co.jp/terms_of_use.html
If you notice any bugs or issues, please feel free to contact us through the in-app inquiry form.
This app, "Hazardous Materials Class B, Category 4: Complete Question Explanation - Self-Study TODAY - 618 Frequently Asked Questions from Basic Q&A to Exam Format," is part of the "Self-Study TODAY" series, a trusted and proven qualification exam preparation app with over 10 million downloads.
A powerful ally for qualification acquisition and exam preparation. If you want to obtain the national qualification "Class B, Category 4 Hazardous Materials Handler," install this popular free app now!
Previous Versions
Here you can find the changelog of 危険物乙４ 全問解説 - 独学TODAY since it was posted on our website on 2026-09-03 23:02:30.
The latest version is and it was updated on 2026-10-10 23:31:23. See below the changes in each version.
危険物乙４ 全問解説 - 独学TODAY version
Updated At: 2026-08-28
Changes: 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！
・各問題セットのアイコン表示が円グラフになり、一見して進捗が把握できるようになりました！
・いくつかの問題内容を加筆修正しました
- 基礎的な物理・化学①＞引火と発火 その1＞第2問＞解説文
- 基礎的な物理・化学①＞消火と消火剤 その2＞第5問＞選択肢・解説文
- 基礎的な物理・化学②＞ボイル・シャルルの法則＞第1問＞解説文
- 危険物の性質・火災予防・消火＞
- 第4類危険物の消火方法 その1＞第3問＞解説文
- 第4石油類＞第1問＞問題文・解説文
- 特殊引火物の品目ごとの性状＞第5問＞解説文
- 【本番演習】（五問択一形式）＞危険物に関する法令 その7＞第5問＞問題文
これからも人気の本アプリ「危険物乙４ 全問解説 - 独学TODAY」を宜しくお願いします！
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