This app offers a question-and-answer format with detailed explanations for Japanese hazardous materials handler qualification exams. It covers various categories of hazardous materials and includes practice tests to assess readiness. Users can track progress and identify weak areas for targeted study.
1.0.12
October 17, 2026
Simplified the Settings screen; it now links to the privacy policy. Study records and purchases are unchanged.
$2.99
Pro (Full Unlock)
Unlock all questions and mock exams.
ご指摘ありがとうございます。試験前の大切な学習期間に、収録範囲の不足でご不安をおかけし、申し訳ありません。内容を点検し、バージョン1.0.11で法令・物理化学・各類の個別物質に関する195問を追加し、類の分類や指定数量に偏っていた出題を整理しました。ホームから収録範囲と学習の進め方も確認できます。いただいたご意見を今後の内容改善に活かしてまいります。
The short name for 危険物乙4・乙種全類 一問一答問題集 is 危険物乙4.
No, 危険物乙4 does not contain advertisements. The app is ad-free.
The basic version of 危険物乙4 is free to try. Full access to all features, including unlimited Q&A and full mock tests, is available through a one-time purchase.
危険物乙4 utilizes an interactive question-and-answer format with comprehensive explanations for every answer choice. This method aims to reinforce understanding of key concepts and common pitfalls.
The app allows users to save records for each category and exam date. It also provides features like tracking weak problems and unattempted questions to guide revision.
Based on the provided data, 危険物乙4 is currently supported on iPhones.
The app was last updated on October 17, 2026, with version 1.0.12. Updates are released to incorporate corrections and improvements.
No, 危険物乙4 is an unofficial study app and does not provide certifications. It is designed to assist in preparation for the official hazardous materials handler qualification exam.
