Practice Exams Grade II Treatment - Division of Water Quality
Practice Exams Grade II Treatment - Division of Water Quality
Practice Exams Grade II Treatment - Division of Water Quality
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PAGE 1 ..3.4.The volatile portion <strong>of</strong> suspended solids contained in normaldomestic wastewater could be expected to be in the range <strong>of</strong>A. Less than 10%.B. 25-50%.C. 70-80%.D. 90-100%.Sludge solids in wastewater have an average specific gravity <strong>of</strong>1.20; this means they areA. 12% heavier than water.B. 20% heavier than water.C. 2% lighter than water.D. 20% lighter than water.5.Products that are non-biodegradable will havecompared with biodegradable products.A. Same BOD.B. A lower BOD.C. A higher BOD.D. There is no relationship between BOD andbiodegradability.as6.,If you come upon a co-worker who is not breathing, you shouldimmediatelyA. Apply cold compresses to the worker's forehead.B. Check for bleeding.C. Run for help.D. Start CPR.
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