Thirty written questions: 40% per subject and 60% overall
Fire Equipment Officer, Class B-6 (Extinguishers)
Learn the extinguisher standards from the statute text.
Drill 125 original questions on fire-service law, basic mechanics, and the structure, function and maintenance of extinguishers, each with the statute or inspection guideline behind it. The 30-question mock follows the written split of 10/5/15. The practical (identification) part is not covered. The same app also covers Class A-4 (140 questions), Class B-4 (132) and Class B-7 (110), all three on iPhone only; Pro is bought per class.
Before you start
- iOS app
- 消防設備士 乙6・甲4・乙4・乙7 一問一答
- What it does
- Practise the three written subjects of Japan's fire equipment officer exams in one app: Class B-6 (125 original questions), Class A-4 (140, 45-question mock), Class B-4 (132) and Class B-7 (110); the Class B mocks have 30 questions.
- Content and features
- Class B-6: 125 original questions / Class A-4: 140 original questions / Class B-4: 132 original questions / Class B-7: 110 original questions / Full and half mocks per class / Statutes and sources shown
- Requirements
- iOS 16.0 or later
- Free access and purchases
- Each class has a limited free trial (10 drill questions in total and one half mock). A one-time in-app purchase per class unlocks all its questions and mock exams; see the app for the price.
- Before choosing
- Japanese-language exam practice. Written part only; the practical parts are not covered. Not reproduced from published exam papers. Law as of 3 October 2026 (B-6), 4 October 2026 (A-4) and 7 October 2026 (B-4, B-7), e-Gov. The Android edition covers Class B-6 only. Independent of the exam authority, with no pass guarantee.
iOS facts checked: · Current App Store listing and purchase terms ↗
3-MINUTE CHECK
Try three questions.
Can you recall the reason?
The mini diagnostic is in Japanese, with a short explanation after each answer. No sign-up is required.
QUESTION 1 / 3
消防法でいう「関係者」の定義として、正しいものはどれか。
問題は独自作成で、試験実施機関が公表した試験問題の転載ではありません。法令はe-Gov（2026年10月3日時点）に基づきます。実技（鑑別）は収録していません。本アプリは試験実施機関の公式アプリではありません。
CONTINUE IN THE APP
Continue in a study environment built for this exam.
Move from focused repetition to exam-format mock tests while keeping your study history.
This page and app are independent study aids, not official exam-authority products. Check current official information before taking an exam.