Question: 8. Short Term Exposure Limit (STEL) is a limit safe for workers to be exposed for a period of not more than: a. 8 hours

8. Short Term Exposure Limit (STEL) is a limit safe for

8. Short Term Exposure Limit (STEL) is a limit safe for workers to be exposed for a period of not more than: a. 8 hours d. 30 minutes b. 4 hours e. 15 minutes C. 45 minutes 9. What method of dust control uses the application of water spray, stream infusion and atomizer? a. Elimination d. Administration b. Substitution e. PPE C. Isolation/Engineering Rectangular Snip 10. Hazard that has an acute effect of light headiness, euphoria, and numbness is: a. Acid mists d. Trichloroethylene b. Carbon monoxide e. Vibration C. Asbestos 11. Colourless, odourless and tasteless gas that is lighter than air and formed by decomposition of organic matter in the absence of air or oxygen: a. Carbon monoxide d. Nitrogen b. Carbon dioxide e. Radon C. Methane 12. The percentage of particles 10 pm in aerodynamic diameter that reaches the alveoli is: 1% d. 4% b. 2% e. 5% 3%

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