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- 1. Multiple Choice
What is a sewage treatment plant?
The place where water is cleaned, filtered and tested before re-entering the water cycle.
The place where water is cleaned, filtered and tested before going to our houses.
The network of pipes that carry sewage (dirty water) from our houses.
The place where water is bottled for drinking.
- 2. Multiple Choice
What type of living things eat the organic matter in the sewage?
Plants
Animals
Bacteria
Fungi
- 3. Multiple Choice
Sewage is mainly a
liquid waste.
solid waste.
gaseous waste.
mixture of solid and gas.
- 4. Multiple Choice
Which of the following is/are products of wastewater treatment?
Biogas
Sludge
Aerator
Both biogas and sludge
- 5. Multiple Choice
An open-drain system is a breeding place for which of the following.
Flies
Mosquitoes
Organisms which cause diseases
All of these
- 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. 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.
- 8. Multiple Choice
The biogas product is used as a source of ___________.
Rains
Energy
Oils
All of these
- 9. Multiple Choice
What decomposes the sludge ______________.
Anaerobic Bacteria
Aerobic Bateria
Both of the above
None of these
- 10. Multiple ChoiceWhich of the following is a characteristic of freshwater?It can be safe for humans to drinkOceans are made out of itIt contains saltThings float easier
- 11. Multiple Choice
We should not throw cooking oil and paint down the drain because
they break the pipe
they harden and clog the pipe
they flow through the drain freely
None of these
- 12. Multiple Choice
Which of the following is a good practice be followed?
Cooking oil and paint should not be thrown down a drain.
Used tea leaves, solid food and cotton should not be thrown in the drain.
Chemicals like insecticides should not throw in the drain.
All of the above
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