10 free CIH practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
CIH Practice Test 9Tutor mode
Question 1 of 10
Exposure Assessment Principles and Practice
Before a tank entry, a multigas meter with a catalytic-bead combustible sensor reads 9.0% oxygen and 2% LEL. How should the combustible-gas reading be interpreted?