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- 1. Multiple Choice
Which of the following is waste water?
(a) Water trickling from a damaged tap.
(b) Water coming out of a shower
(c) Water coming out of a laundry
Water flowing in a river.
All of the above
- 2. Multiple Choice
Sewage is mainly a
liquid waste.
solid waste.
gaseous waste.
mixture of solid and gas.
- 3. Multiple Choice
Which of the following is/are products of wastewater treatment?
Biogas
Sludge
Aerator
Both biogas and sludge
- 4. Multiple Choice
An open-drain system is a breeding place for which of the following.
Flies
Mosquitoes
Organisms which cause diseases
All of these
- 5. Multiple Choice
Water polluted by various human activities causes a number of water-borne diseases. Which of the following is not a waterborne disease?
Cholera
Typhoid
Asthma
Dysentry
- 6. Multiple Choice
The system of a network of pipes used for taking away wastewater from homes or public buildings to the treatment plant is known as
sewers
sewerage
transport system.
treatment plant.
- 7. Multiple Choice
Which of the following is not a source of wastewater?
Sewers
Homes
Industries
Hospitals
- 8. Fill in the Blank
State whether the following statement are True or False.
Sewage is a solid waste which causes water pollution and soil pollution.
- 9. Fill in the Blank
Where underground sewerage systems and refuse disposal systems are not available, the high-cost on-site sanitation system can be adopted.
- 10. Fill in the Blank
Animal waste, oil and urea are some of the organic impurities present in sewage. Name two more organic impurities present in sewage.
- 11. Fill in the Blank
What is one of the way to save water
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