Deck: Deck General

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

Tip: press A-D to answer