Environmental Chemistry II Water Multiple Choice Questions and Answers 7 PDF Download
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MCQ on Environmental Chemistry II Water Worksheets 7 Quiz PDF Download
MCQ: Process in which water is filtered through sand and gravel is called
MCQ: How many basic steps are involved in raw water treatment?
MCQ: Natural water is
- acts as solute
MCQ: Addition of washing soda removes
- softness of water
- temporary hardness of water
- permanent hardness of water
- hydrogen from water
MCQ: First step of sewage water treatment is called
- Primary sewage treatment
- Secondary sewage treatment
- Activated sludge treatment