Position 3 on a hazard placard relates to which category?

Position 3 on a hazard placard relates to which category?

• A. Health (blue)
• B. Flammability (red)
• C. Reactivity (yellow)
• D. Special information (white)

Answer: (C)

Hazard placards convey different hazard types using color-coded sections: blue for health, red for flammability, yellow for reactivity, and white for special information. The yellow section is the one that signals reactivity hazards. Reactivity describes how likely a material is to undergo a chemical reaction under certain conditions, such as heat, shock, friction, or contact with water or other substances. A reactive material may become unstable, release gases, or even explode when exposed to these conditions. Examples like reactive metals or strong oxidizers illustrate how important it is to keep such substances away from incompatible materials. The blue and red sections cover health and flammability risks, while the white section provides additional details about special hazards, so the yellow color specifically indicates reactivity hazards.

Hazard placards convey different hazard types using color-coded sections: blue for health, red for flammability, yellow for reactivity, and white for special information. The yellow section is the one that signals reactivity hazards. Reactivity describes how likely a material is to undergo a chemical reaction under certain conditions, such as heat, shock, friction, or contact with water or other substances. A reactive material may become unstable, release gases, or even explode when exposed to these conditions. Examples like reactive metals or strong oxidizers illustrate how important it is to keep such substances away from incompatible materials. The blue and red sections cover health and flammability risks, while the white section provides additional details about special hazards, so the yellow color specifically indicates reactivity hazards.