Approximately how many chemicals are covered in the NAERG?

Approximately how many chemicals are covered in the NAERG?

• A. 6,000
• B. 4,000
• C. 2,000
• D. 8,000

Answer: (B)

The question is about the size of the NAERG’s coverage. The North American Emergency Response Guide Book is a comprehensive reference used by responders, listing a large number of chemicals and related hazards to guide initial actions at incidents. The figure most often cited for how many chemicals are covered is about four thousand. This is an approximate count because editions are updated over time, adding new substances and refining entries, so the total isn’t fixed but stays in the low-to-mid thousands. Four thousand captures the typical scope of the guide best, making it the most accurate choice among the options.

The question is about the size of the NAERG’s coverage. The North American Emergency Response Guide Book is a comprehensive reference used by responders, listing a large number of chemicals and related hazards to guide initial actions at incidents. The figure most often cited for how many chemicals are covered is about four thousand. This is an approximate count because editions are updated over time, adding new substances and refining entries, so the total isn’t fixed but stays in the low-to-mid thousands. Four thousand captures the typical scope of the guide best, making it the most accurate choice among the options.