サクッと危険物乙4 1問1答【サクトレ】

This is a question-and-answer app specifically designed for exam preparation for the Class B, Category 4 (Otsu 4) Hazardous Materials Handler license.

It includes 371 questions across 10 fields, broadly covering three subjects: laws and regulations, basic physical chemistry, and properties of hazardous materials and fire extinguishing. Every question comes with a detailed explanation, ensuring thorough understanding even for incorrect answers.

■ Complete Coverage of 3 Subjects and 10 Fields

【Laws and Regulations (5 Fields, 170 Questions)】
・Definition and Designated Quantity of Hazardous Materials: Classification of Classes 1-6, Product Names, Calculation of Multiples of Designated Quantities
・Classification and Standards of Manufacturing Facilities, etc.: 3 Types, 12 Facilities, Safety Distance, Required Open Space
・Installation Permits, Notifications, and Various Procedures: Installation Permits, Completion Inspections, Provisional Use Approval
・Hazardous Materials Handler System and Safety System: Licenses, Safety Training, Safety Supervisors, Prevention Regulations
・Storage, Handling, Transportation, and Transfer Standards: Transportation Containers, Prohibition of Mixed Loading, Fire Extinguishing Equipment

【Basic Physics Chemistry (3 fields, 100 questions):
* Basic Physics: Phases of State, Specific Heat, Boyle's Law and Charles's Law, Electrostatics
* Basic Chemistry: Oxidation-Reduction, Neutralization Reactions, Ionization Tendency, Organic Compounds
* Theory of Combustion and Fire Extinguishing: Three Elements of Combustion, Flash Point and Ignition Point, Principles of Fire Extinguishing

[Properties and Fire Extinguishing of Hazardous Materials (2 fields, 101 questions)]
* Common Properties of Class 4 Hazardous Materials: Characteristics of Flammable Liquids, Fire Prevention
* Individual Properties and Fire Extinguishing Methods for Each Hazardous Material: Special Flammable Substances, Classes 1-4 Petroleum, Alcohols, Animal and Vegetable Oils

■ Includes Numerous Numerical Problems

This book focuses on numerical problems frequently appearing in the Class 4 Hazardous Materials Examination.

* Designated Quantity (e.g., 50L of special flammable materials, 200L of Class 1 petroleum products)
* Flash Point/Ignition Point (e.g., gasoline -40°C or below, kerosene 40°C or above)
* Safety Distance (e.g., 10m for general residences, 30m for schools, 50m for important cultural properties)
* Various Legal Deadlines (e.g., 3-year retention period for periodic inspections, 10-year retention period for license photos)

■ Efficient Learning Features

* Automatic Question Selection: Prioritizes questions that haven't been asked before or that you find difficult
* Answer History: Records the correct/incorrect answers for the last 3 questions for each question
* Question Count Setting: Freely set the number of questions per session from 5 to 50
* Text Size Change: Adjustable to a comfortable size
* Calculator Function: Solve calculation problems on the spot

■ Recommended for:

* Those aiming to pass the Hazardous Materials Class 4 exam
* Those who need the qualification for gas stations, building maintenance, etc.
* Those who want to study during their commute or in their spare time
* Those who want to repeatedly learn numerical values ​​that are difficult to remember from textbooks alone

■ Learn comfortably without ads

No ads are displayed. You can concentrate on your studies.

■ Start for free

The first section (definition and designated quantities of hazardous materials - 30 questions) is available for free. Unlocking all questions requires an in-app purchase.

■ Sakutore Series

"Sakutore" is a series of learning apps that allow you to quickly study during your free time. We offer apps for a wide range of qualifications and exams, including FP, bookkeeping, IT qualifications, Kanji proficiency tests, and English proficiency tests.