We use water every day in our daily lives, and in a common language, any water that has been contaminated by human use is called wastewater. The life of humans or animals, birds, and all living creatures is not possible without water. But we have to avoid wastewater and treat it. Wastewater treatment is a process that is used to remove contaminants from wastewater or sewage and is converted into a waste that can be returned to the water cycle with minimal impact on the environment, This process is called wastewater treatment and wastewater treatment is part of the overarching area of sanitation. Every year a lot of students take the Class VII exam. But some students do not get good marks, due to which their further studies become difficult. So take this wastewater story quiz and get some good questions about the wastewater story for exam practice.
1. Choose the name of two chemicals used for disinfecting wastewater.
A. Calcium And potassium
B. Chlorine And Ozone
C. Chlorine And Calcium
D. Sodium carbonate And Cellulose
2. Select the name of two things that can be made from sludge extracted during the treatment of sewage.
A. Biogas And Protozoa
B. Methane And Oxygen
C. Biogas And Manure
D. None of these
3. Give the name of two inorganic impurities which is present in sewage.
A. Nitrates And Phosphates
B. Calcium And Magnesium salts
C. Silicates And Ferrous
D. Nitrates And Carbon dioxide
4. Which of the following is not an example of on-site sewage disposal?
A. Septic tanks
B. Chemical toilets
C. Composting pits
D. Vegetable waste
5. What is called the common process of cleaning of wastewater?
A. Water Treatment
B. Sewage Treatment
C. Chemical Treatment
D. Bio-gas Treatment
6. When we celebrate world water day?
A. 22 April
B. 15 March
C. 22 March
D. 25 March
7. Choose the name of organisms that produce biogas from sludge in the digester tank of a wastewater treatment plant.
A. Fungi
B. Protozoa
C. Anaerobic bacteria
D. All of the above
8. Which of the following is a part of inorganic impurities of the sewage?
A. Urea
B. Phosphates
C. Vegetable waste
D. None of these
9. What is the full form of WWTP?
A. Waste Water Treatment Plant
B. Waste Water Treatment Plane
C. Water Waste Tracking Plant
D. Waste Water Treatment Planet
10. ................ play important role in sewage treatment.
A. Bacteria
B. Water
C. Sewage
D. Chemical
11. .................... is treated in a waste treatment plant.
A. Wastewater
B. Waste vegetable
C. Waste soil
D. All of the above
12. Choose the name of the plant which is suggested for purification of sewage pond water.
A. Century Plant
B. Christmas cheer plant
C. Eucalyptus plant
D. Kwanzan Cherry plant
13. The problem of water scarcity is increasing day by day because ....
A. Pollution
B. Population Growth
C. Industrial Development
D. All of the above
14. Which of the following is a waterborne disease?
A. Cancer
B. Typhoid
C. Trachea
D. Pneumonia
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