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sample_exam - Sample Exam ENHS 603/ Midterm I- True or...

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Sample Exam ENHS 603/ Midterm I- True or False 1. T F Infectious of solid waste in open dumps is banned in Louisiana. 2. T F Water stored in an open reservoir at a depth of 10 feet for a period of one month will be safe for human consumption without disinfection. 3. T F Anaerobic bacteria will grow only in the presence of free oxygen 4. T F In a water treatment, chloramines are added to water to aid the removal of algae from the water. 5. T F The function of chlorine is to sterilize drinking water before it enters the distribution system II- Multiple Choice 1. The coagulation step in a water treatment plant refers to: a. slowing down the water velocity to allow solids to settle b. passing the water through sand filters to remove solids c. adding disinfectants to destroy pathogens d. Adding certain chemicals such as ( Ferrous sulfate) to water which attract particles to come together and form a mass, heavy enough, so it can be removed in the settling tank. e.
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This note was uploaded on 03/12/2010 for the course ENHS 603 taught by Professor Abdelgani during the Fall '09 term at Tulane.

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sample_exam - Sample Exam ENHS 603/ Midterm I- True or...

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