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Class 7 Science Chapter 13 Wastewater Story Quiz 1 (25 MCQs)

Quiz Instructions

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1. During heavy exercise when supply of oxygen to our muscles is insufficient food breakdown is by
2. Period 2005-2015 is being celebrated as the international decade for action on
3. ..... are used to remove large objects like rags, sticks, cans, plastic packets, napkins, etc.
4. Which is the first process of Wastewater Treatment Plant(WWTP)?
5. Air is pumped into the clarified water for the growth of aerobic bacteria
6. The impurities present in sewage may consist of
7. Examples of nutrients
8. Is being celebrated as the international decade for action on
9. Small openings on the side of the cockroaches body is called as
10. Which process during waste water treatment helps in eliminating germs?
11. Anaerobic respiration .....
12. Where is the sludge and solids separated from the liquid?
13. Pick from the Following one chemical which is used to disinfect water
14. The period of International Decade for action on 'Water for Life' is
15. True Or FalseWastewater cannot be reused.
16. Adopting good ..... practices should be our way of life
17. Choose the correct statements about ozone:(a) Its essential for breathing in living organisms.(b) It is used to disinfect water.(c) It absorbs ultraviolet rays.(d) Its proportion in air is about 3%.
18. Which one of the following is a step in wastewater treatment?
19. Which diseases caused by pollutants and disease-causing microorganisms in water is called?
20. The short form 'wastewater treatment plant' is
21. What do u mean by WWTP?
22. What are the products of anaerobic respiration in a human cell?
23. In the year of 2016, ..... mission was initiated by the government.
24. Full form of WWTP is
25. A plant which can absorb waste water rapidly and release pure water vapor to the atmosphere.
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