NFPA Diamond Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

NFPA Diamond Questions and Answers | Latest Version | 2025/2026 | Correct & Verified What does the red section of the NFPA diamond indicate? Flammability hazard What does the blue section of the NFPA diamond indicate? Health hazard What does the yellow section of the NFPA diamond indicate? Reactivity hazard What does the white section of the NFPA diamond indicate? Special hazard information In NFPA 704, what does a rating of 0 in any category mean? No hazard 2 In NFPA 704, what does a rating of 4 in the red section mean? Extremely flammable In NFPA 704, what does a rating of 3 in the blue section mean? Serious or permanent injury hazard What does a rating of 2 in the yellow section indicate? Material is unstable and may undergo violent chemical change What special hazard symbol “W” with a line through it indicates? Do not use water What special hazard symbol “OX” indicates? Oxidizer What is the main purpose of the NFPA diamond? To provide quick hazard information to emergency responders 3 Where is the NFPA diamond typically displayed? On chemical containers and storage areas If a chemical has a 0 in red, 1 in blue, 0 in yellow, and “OX” in white, what hazards are present? Slight health hazard, oxidizer, not flammable, stable Why is it important to know the NFPA diamond during a fire emergency? It guides responders on the correct firefighting method and PPE What number in the blue section indicates that protective equipment is required due to moderate health risk? 2 What does a red rating of 2 indicate? Material must be moderately heated to ignite What does a yellow rating of 0 indicate? Material is stable 4 What does a blue rating of 4 indicate? Exposure could be lethal; extreme health hazard What does a red rating of 4 indicate? Material is extremely flammable and ignites easily If a chemical container shows a white “ACID” symbol, what does it indicate? The chemical is acidic and corrosive What is indicated by a white “ALK” symbol? The chemical is alkaline and corrosive What type of hazard does the NFPA diamond NOT