9 Hazard Classes and Placard Quiz

Hazard Classes

• Class 1: Explosives encompass materials that can undergo rapid chemical reactions releasing gas, heat, and pressure.
• Class 2: Gases include compressed, liquefied, or dissolved gases that can pose hazards due to their flammability, toxicity, or reactivity.
• Class 3: Flammable and combustible liquids are liquids that can ignite and sustain combustion at varying flash points.
• Class 4: Flammable solids are solids that can easily ignite and sustain combustion through friction, heat, or contact with moisture.
• Class 5: Oxidizing substances and organic peroxides can cause or enhance the combustion of other materials, posing significant fire risks.
• Class 6: Toxic and infectious substances include materials that can cause health hazards through inhalation, ingestion, or skin contact, potentially posing serious health risks.
• Class 7: Radioactive materials emit ionizing radiation and can pose health hazards through exposure, requiring strict handling regulations.
• Class 8: Corrosives are materials that can cause damage to living tissue or material degradation upon contact.
• Class 9: Miscellaneous hazardous materials do not fit into the other defined classes but pose various risks.

Placard Colors

• Blue placard indicates a health hazard, signaling potential dangers to human health or safety.
• Red placard signifies flammability risks, alerting to potential fire hazards.
• Yellow placard denotes instability, indicating materials that may react violently under certain conditions.
• White placard represents specific hazards that may require unique precautions or handling guidelines.

Test your knowledge on the nine hazard classes and their definitions. This quiz focuses on different types of hazardous materials and their corresponding placards. Perfect for students in safety management or emergency response training.