Question 31 : Which of the following is an anaerobic process for treating sewage?
1. Oxidation pond
2. Imhoff tank
3. Oxidation ditch
4. Rotating Biological Contactors
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Question 32 : The maximum flow through the period at D is
1. 0.3m/min
2. 0.4m/min
3. 0.8m/min
4. 0.9m/min
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Question 33 : Which of the following is not the method of disposal of sewage from septic tank?
1. Upflow anaerobic filter
2. Soil absorption system
3. Vacuum filter
4. Biological filters
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Question 34 : ______ is a liquid that passes through solid waste and extract suspended impurities from it.
1. Leachate
2. Sludge
3. Distilled water
4. Municipal waste
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Question 35 : What is the minimum depth of water to be kept in oxidation pond?
1. 0.3m
2. 0.5m
3. 1m
4. 1.5m
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Question 36 : _________ is the crushing and grinding of municipal solid waste.
1. Land fills
2. Shredding
3. Pulverization
4. Composting
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Question 37 : Which of the following is a biological method of disposal of municipal solid waste?
1. Land fills
2. Shredding
3. Pulverization
4. Composting
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Question 38 : What is the maximum design flow of sewage in a septic tank?
1. 70 liters per person per day
2. 100 liters per person per day
3. 30 liters per person per day
4. 40 liters per person per day
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