For the Hazardous Materials Technician written exam, reviewing necessary content in a timely manner is more important than solving a large number of problems.
Prepare for "Properties of Hazardous Materials and Safety Management" in one app. It includes self-produced questions and detailed explanations for each unit, and FSRS calculates the next review time based on your memory status for each question.
[Key Features]
**Full-Scope Learning by Unit**
You can study the single subject of "Properties of Hazardous Materials and Safety Management" by dividing it into units. Progress and accuracy rates are displayed for each unit, allowing you to identify and focus on areas you haven't touched yet or your weak points.
**Self-Produced Questions and Detailed Explanations**
We have included study questions across all units tailored to the exam scope and the 4-option multiple-choice format. To ensure you don't just check the answer and move on, we have explained why that answer is correct and why the other options are incorrect.
**Mock Exams**
Practice with the actual exam format, solving 60 questions within 60 minutes. You can check your results against the passing standard of a total score of 60 points or higher. After completing the exam, you can review your scores by unit and the questions you got wrong all at once. Initial Diagnosis
Check your current skill level with a short diagnosis when you first start. You can determine which unit to tackle first before beginning your studies.
Question Search
Enter a word you are curious about into the search bar to find related questions immediately. Since the search is conducted across concepts, questions, and answer choices, it will be found even if the wording is slightly different.
Selective Study Mode
You can select a range of questions by unit to solve. Turning on "Start Unsolved Questions" allows you to continue solving problems you haven't touched yet.
Continue Solving
Your progress is saved even if you exit the app while solving problems. When you return, you can resume your studies from where you left off.
FSRS Smart Review
The review interval for questions you remember well is extended, while frequently missed questions are shown again sooner. You can study at the point when your memory starts to fade, without having to manually select the questions for today.
Study & Review Notifications
Notifies you of your daily study time and reminds you again when review questions accumulate. You can set the notification times yourself. Weakness Analysis
Check the correct answer rate for each unit at a glance. Identify which areas you are weak in and proceed directly to solving those units.
Review Box & Error Note
Gather incorrect answers and questions to review in one place. You can sort and filter to find the problems you need and solve them immediately, and leave notes on each question to review the reasons for your confusion.
Review Cycle Management
Indicates how many times each problem has been solved. You can continue your review cycles by distinguishing between problems you have reviewed repeatedly and those you are not yet familiar with.
Question Frequency Analysis (Premium)
Check the proportion of questions by unit to decide where to start. The shorter the remaining time, the more you can concentrate your time on the units that appear frequently.
Study Report
Provides a report reviewing your daily study. You can determine your next study session by checking what has improved and what remains to be covered.
Learning Statistics and Continuous Study
Check daily problem-solving counts, correct answer rate trends, and consecutive study days. You can manage the amount of study accumulated during your commute and spare time at a glance. Exam Schedule D-Day
Check the remaining days until the upcoming exam directly on the home screen. If you select the session you wish to take, the schedule will be displayed accordingly.
Pre-Exam Checklist
As the exam approaches, a checklist appears on the home screen. You can calmly prepare for the day by checking your supplies and precautions one by one.
1:1 Inquiry and FAQ
Check the FAQ within the app and ask questions immediately. You can attach photos to your inquiries, and receive notifications when answers are registered.
Font Size Adjustment
You can adjust the font size to make reading questions and explanations easier. You can choose a size that fits your screen and learning environment.
Light and Dark Themes
You can follow system settings or choose your preferred theme. You can view comfortably in both bright and dark environments.
Tablet Support
You can study not only on mobile phones but also on tablets with a layout optimized for large screens.
Offline Learning
You can solve problems even without an internet connection. You can maintain your learning flow even on the subway or airplane.
Device Synchronization
When you log in, your study records and review schedules are saved. You can retrieve your existing records and continue studying even if you switch devices.
[Recommended for]
Those preparing for the Hazardous Materials Technician written exam for the first time
Those preparing for self-study who need to create their own study plan
Those who gave up halfway because reviewing incorrect answers was cumbersome
Those who want to utilize short periods between work or classes
[Content Guide]
All questions are study content created in-house based on the exam scope and format. We do not restore or transfer publicly available questions from specific exam sessions.
This app is an independent private learning tool to assist with studying for the Hazardous Materials Technician written exam and is not affiliated with or represented by the Human Resources Development Service of Korea, the National Fire Agency, or any other public institution. Please check the official Q-Net announcements as the final reference for exam schedules and regulations.
[Usage Options]
You can select the method that best suits your study plan from monthly, 3-month, or lifetime usage options. Actual payment terms can be checked on the in-app payment screen in the app store.
[Terms of Use]
Terms of Service: https://dayprep.co/wiheomgi/terms
Privacy Policy: https://dayprep.co/wiheomgi/privacy
(c) 2026 DAYLAB, contact@daylab.dev
[Content Source and Non-Governmental Information]
This app is an independent private learning tool designed to assist with preparation for the Hazardous Materials Technician written exam. It has no affiliation, sponsorship, or approval relationship with government or public institutions such as the Human Resources Development Service of Korea or the National Fire Agency, and does not represent any of them. It does not act as a proxy for government agencies or political organizations, nor does it guarantee passing the exam. Please check the latest announcements from the administering agency below for the exam schedule and detailed criteria.
Official Exam Schedule, Registration, and Eligibility: https://www.q-net.or.kr/crf005.do?id=crf00503&jmCd=6697
971 Questions ยท Problem Solving for Class 1โ6 Hazardous Materials and Fire & Extinguishing Units. Review with error notes and weakness analysis, and check your understanding with a 60-question, 60-minute practice test.