Practice Exam - Questions & Detailed Solutions

In mg/m3, what is equivalent to 100 ppm for a gas with a molecular weight of 24.45? a. 1 b. 10 c. 100 d. 1000 {Ans: c. 100}Priority pollutants are regulated by: a. CWA b. CAA c. SARA d. SDWA {Ans: a. CWA}Laboratory Analytical QA Objectives would not include: a. calibration b. comparability c. precision and accuracy d. representativeness and completeness {Ans: a. calibration}When polonium (atomic mass 210 & atomic number 84) emits an alpha particle, which of the following decay products results? a. Bismuth (atomic mass 209 & atomic number 83) b. Lead (atomic mass 206 & atomic number 82) c. Thallium (atomic mass 204 & atomic number 81) d. Mercury (atomic mass 201 & atomic number 80) {Ans: b. Lead (atomic mass 206 & atomic number 82)}In the USDOT Shipping Description, the packaging group number is an indication of: a. the size of the hazmat packaging b. the weight of the hazmat packaging c. the degree of danger the material presents d. the size and weight of the hazmat packaging {Ans: c. the degree of danger the material presents}Which of the following is not a DOT Hazard Class? a. Flammable Liquid b. Ignitable