Question 742 Deck General

The correct answer is A) the chemical poison presents some hazard if it enters the body and typically has threshold limits of 100 to 500 ppm. The last digit of the health hazard rating (2) indicates that the chemical is moderately toxic if ingested, inhaled, or absorbed through the skin. Chemicals with a health hazard rating of 2 typically have threshold limits or permissible exposure limits between 100 and 500 parts per million (ppm). The other options are incorrect because they do not accurately describe the meaning of the last digit in the health hazard rating. Option B describes a slightly irritating chemical, Option C describes a highly toxic chemical, and Option D describes a chemical that causes severe skin irritation, none of which are accurate for a health hazard rating of 2.