Deck 2014: Safety

1. A chemical vapors will cause a slight smarting of the eyes or respiratory system if present in high concentrations
2. B the chemical contains fairly severe skin irritants, causing second- and third- degree burns after a few minutes contact
3. C the chemical poison presents some hazard if it enters the body and typically has threshold limits of 100 to 500 ppm
4. D the chemical is severely hazardous, usually having threshold limits below 10 ppm

Tip: press A-D to answer