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Class 7 Science Chapter 13 Wastewater Story Quiz 5 (25 MCQs)

Quiz Instructions

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1. When is the world water day celebrated?
2. Flower consisting of both the male and female reproductive organs are called
3. Organic impurities contain-
4. What are the onsite sewage disposal system for human waste
5. Protozones causes .....
6. Large objects like rugs, napkins, plastic bags are removed by using?
7. Which one of the following is used in vermi processing toilets
8. Which toilet in which human excreta is converted to vermi cakes by earthworms is called?
9. When the male and female flowers are borne by different plants, these are called?
10. Which of the following is/are products of wastewater treatment?
11. ..... is a process of removing pollutants before it enters a water body or is reused.
12. Which process removes the solid like and faeces and other substances from the waste water
13. Wastewater cannot be reused.
14. Advantages of Sewage System
15. Water formed at the end of sedimentation process
16. Sewage consists of .....
17. Sewage treatment
18. Disadvantages of Sewage System
19. Best Way To Filter Water
20. Clean water is used for
21. Oil and grease form the
22. Which plant have fleshy stem and produce new plants when their parts fall on the ground?
23. The process of breaking down of food in the cell with release of energy is called
24. THE BIOGAS CAN BE USED AS /TO PRODUCE
25. Where does the water from the wastewater treatment plant go?
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