Practice question

The term IDLH stands for and is used to describe:

  1. A concentration that is Immediately Dangerous to Life or Health
  2. The lowest concentration that can be smelled
  3. The legal 8-hour average exposure limit
  4. The point at which a vapor will ignite

Answer: A — A concentration that is Immediately Dangerous to Life or Health

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: Hazmat Specialist Practice Questions - Hazardous Materials Specialist (NFPA 470) Certification Exam Exam →