MCQs: Cleaning is done by________________?
1) scraping and removal in filters slow sand
2) back washing in slow sand filters
3) scraping and removal in filters rapid sand
4) back washing in rapid sand filters
The correct answer is
Category: Civil Engineering Mcqs, Published by: teswesm
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MCQs: Air binding phenomena in rapid sand filters occur due to_________________?
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MCQs: As compared to rapid sand filters, slow sand filters give______________?
1) slower filtration rate
2) higher filtration rate
3) lesser efficiency in removal of bacteria
4) higher efficiency in removal of bacteria
The correct answer is?
Category: Civil Engineering Mcqs, Published by: teswesm
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MCQs: The rate of filtration in slow sand filters in million litres per day per hectare is about_____________?
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MCQs: The chemical most commonly used to increase speed of sedimentation of sewage is_______________?
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MCQs: The detention period in coagulation tanks is usually kept as_______________?
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MCQs: The amount of coagulant needed for coagulation of water increases with_______________?
1) increase in turbidity of water
2) decrease in turbidity of water
3) increase in temperature of water
4) decrease in temperature of water
The correct answer is?
Category: Civil Engineering Mcqs, Published by: teswesm
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MCQs: For a given discharge, the efficiency of sedimentation tank can be increased by______________?
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MCQs: The settling velocity of a particle in a sedimentation tank depends on__________________?
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MCQs: The overflow rate for plain sedimentation tanks is about__________________?
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MCQs: The settling velocity of a particle in a sedimentation tank increases if_________________?
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MCQs: The velocity of flow of water in a sedimentation tank is about__________________?
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MCQs: The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about______________?
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MCQs: Orthotolidine test is used for determination of________________?
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MCQs: On standard silica scale, the turbidity in drinking water should be limited to_______________?
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MCQs: Which of the following values of pH represents a stronger acid?
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MCQs: Standard EDTA (ethylene diamine tetra acetic aciD. solution is used to determine the_______________?
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MCQs: Ground water is usually free from________________?
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MCQs: The maximum discharge of a tube-well is about_________________?
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MCQs: The phenolic compounds in public water supply should not be more than_______________?
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