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- 1. Fill in the Blank
______________________ is a process in which the waste-water is purified and cleaned before it enters any water body.
(Please write answer in CAPITAL letters)
Hint : It contains the word cleaning in it
- 2. Fill in the Blank
What is the term given to waste water discharged by homes, hospitals, hotels, restaurants etc.
(Please write answer in CAPITAL letters)
- 3. Multiple Choice
How many people do not have access to clean drinking water in the world ?
1 billion
2 billion
50 million
25 million
- 4. Multiple Choice
Which time period was declared by the UN to be the decade of action on "Water for life" ?
2000 - 2010
2005 - 2015
2010 - 2020
1980 - 1990
- 5. Multiple Choice
Treatment of sewage can be done by ___________, ___________, and _____________ types of processes.
Physical
Chemical
Biological
Mechanical
- 6. Multiple Choice
Water which is cleaned and purified in the treatment pant is called _____________________
Purified water
Clarified water
Cleaned water
Treated water
- 7. Multiple Choice
Solids like feces settle down at the bottom and are removed by machines as sludge.
True
False
- 8. Multiple Choice
Sewerage is the _________________________________
Network of pipes that carries waste-water to point of disposal or treatment plant.
Sewage that is discharged by Hotels.
Pothole on the side of the road.
Network of pipes that brings clean water to homes, hospitals etc.
- 9. Multiple Choice
Biogas can be used to produce fuel and electricity.
True
False
Can't say / don't know
- 10. Multiple Choice
Sludge is decomposed by bacteria called _______________
Anaerobic bacteria
E.Coli Bacteria
Lactic bacteria
Intestinal bacteria
- 11. Multiple Choice
Activated sludge is made up of _______________
Waste products
Sludge
Microbes
Clean water
- 12. Multiple Choice
Aerobic Bacteria, which help to clear remaining impurities in the water need __________ to survive
Air
Water
Waste products
Feces
- 13. Multiple Choice
Activated sludge is made up of 97% water. This water is reusable. It can be removed using __________ or _____________
Sand beds
Machines
Bacteria
Chemicals
- 14. Multiple Choice
Which trees can absorb large quantities of waste-water ?
Banyan
Peepul
Eucalyptus
Neem
- 15. Multiple Choice
Why should cooking oil and fats not be thrown down the drain ?
They clog up the drain.
They decrease drainage capacity of pipes
They do not smell nice
They can not be cleaned by the treatment plants
- 16. Fill in the Blank
Name any one disease caused by unclean water.
(Please write answer in CAPITAL letters)
- 17. Multiple Choice
Which of the following is an example of on-site sewage disposal system ?
Septic tanks
Chemical toilets
Composting pits
All of the above
- 18. Fill in the Blank
Waste material in large amounts need to be disposed of otherwise they might cause ____________
(Please write answer in CAPITAL letters)
- 19. Multiple Choice
Why are governmental laws on proper sanitation not strictly followed in the country ?
People do not want to follow these laws.
Proper places for disposal of waste or proper sewerage networks not made.
Government doesn't force people to follow these laws.
People feel too much resentment towards the government to follow these laws.
- 20. Multiple Choice
Should citizens take care of how the waste is being managed or let the government do everything ?
Let the government do everything.
People have to take everything into their hands
Government and people should co-operate
Can't say
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