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Waste water Story Test - 6

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Waste water Story Test - 6
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Sanitation at public places can be maintained by
    Solution
    • Sanitation refers to public health conditions related to clean drinking water and adequate treatment and disposal of human wastes and sewage. Preventing human contact with feces is part of sanitation.
    • Sanitation at public places can be maintained by Proper drainage,Garbage management and Sufficient public toilet facilities.
    • So, the correct answer is 'All the above'.
  • Question 2
    1 / -0
    The soil pores block and become ineffective in filtering the water due to 
    Solution
    Oil and fats can clog the drains reducing its effectiveness in filtering water. In open drains, they block the pores in the soil and thus hamper the filtration by soil. Hence, oil and fats should not be released into the drain.

    So, the correct answer is 'Disposal of oil in open drain'.
  • Question 3
    1 / -0
    The disease caused due to improper sanitation in public place is
    Solution
    • An endemic disease is a disease that exists permanently in a particular region or population. Poor sanitation is linked to transmission of some endemic diseases such as cholera, diarrhea, dysentery, hepatitis A, typhoid and polio
    • Hence the disease caused due to improper sanitation in public place is endemic diseases.
    • So, the correct answer is 'Endemic'.
  • Question 4
    1 / -0
    Which of the following is associated with the vermi-processing toilets?
    Solution
    • Vermi-processing toilets is a design of a toilet in which humans excreta is treated by earthworms.
    • In this process, human excreta is completely converted to cake like structures called vermi cakes by earthworms. Vermi cakes are used mostly in the soil as manure and fertilizers.
    • The vermi-processing toilets do not use water for flushing and therefore called dry toilets. 
    • Hence vermi-processing toilets are associated with Low water use toilet because they do not use water for flushing.
    • So, the correct answer is 'Low water use toilet
  • Question 5
    1 / -0
    Cooking oil should not be thrown down the drain because
    Solution
    • All the cooking oils should not be thrown in drains because it can harden and block the pipes. In an open drain, the fats clog the soil pores reducing its effectiveness in filtering water. 
    • Throw oil and fats in the dustbin.
    • Hence Cooking oil should not be thrown down the drain because they block the drainage pipes.
    • So, the correct answer is 'They block the drainage pipes'.
  • Question 6
    1 / -0
    Black brown water that goes down the drain from sink is called as
    Solution
    Black brown water that goes down the drain from sink is called as Wastewater. It is a combination of the industrial, commercial, domestic and household activities which contain impurities.

    Option "C" is correct.
  • Question 7
    1 / -0
    Wastewater goes down the drain from
    Solution
    Water rich in lather, mixed with oil, black– brown water that goes down the drains from sinks, showers, toilets, laundries with impurities is called wastewater.

    Option "D" is correct.
  • Question 8
    1 / -0
    Identify the low-cost onsite sewage disposal system.
    Solution
    To improve sanitation, low-cost onsite sewage disposal systems are being encouraged. Examples are septic tanks, chemical toilets, composting pits. 
    • Septic tanks are suitable for places where there is no sewerage system, for hospitals, isolated buildings or a cluster of 4 to 5 houses. 
    • Some organisations offer hygienic on-site human waste disposal technology. These toilets do not require scavenging. Excreta from the toilet seats flow through covered drains into a biogas plant. The biogas produced is used as a source of energy.
    • A chemical toilet collects human excreta in a holding tank and uses chemicals to minimize odours. These toilets are usually, but not always, self-contained and movable. A chemical toilet is structured around a relatively small tank, which needs to be emptied frequently.

    So, the correct answer is 'D'. 
     
  • Question 9
    1 / -0
    Bar screening is used to remove ____.
    Solution

  • Question 10
    1 / -0
    Which of the following filter is used for filtration of wastewater?
    Solution
    • Wastewater goes to a grit and sand removal tank. The speed of the incoming wastewater is decreased to allow sand, grit and pebbles to settle down.
    • Thus, Sand and Grit filters are used for filtration of wastewater.
    Option "D" is correct.
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