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- 1. Multiple Choice
which one of the following is a quality of wastewater?
Foul smell
bad taste
Dirty look
all of these
- 2. Multiple Choice
Period 2005-2015 is being celebrated as the international decade for action on
water for life
education for all
global war
terrorism
- 3. Multiple Choice
In sewerage manholes are located at every
20-25 m
50-60 m
90-100 m
100-110 m
- 4. Multiple Choice
Which one of the following is a step in wastewater treatment?
Aeration
Filtration
Chlorination
All of these
- 5. Multiple Choice
Sludge in separate tanks is decomposed to get biogas by
yeasts
aerobic bacteria
anaerobic bacteria
none of these
- 6. Multiple Choice
Which one of the following is used in vermi-processing toilet?
Earthworm
Cockroach
Both of these
None of these
- 7. Multiple Choice
Sewage is mainly a
liquid waste
Solid waste
gaseous waste
Mixture of solid and gas
- 8. Multiple Choice
Which of the following is/are products of wastewater treatment?
Biogas
Sludge
Both Biogas and sludge
aerator
- 9. Multiple Choice
Open drain system is a breeding place for which of the following:
Files
Mosquitoes
Organisms which cause diseases
All of these
- 10. Multiple Choice
Which of the following is not a source of waste water?
sewers
Homes
Industries
Hospitals
- 11. Multiple Choice
Sewage is a solid waste which causes water pollution and soil pollution
true
false
- 12. Multiple Choice
Used water is wastewater.
true
false
- 13. Multiple Choice
Wastewater could be reused
true
false
- 14. Multiple Choice
Pick from the following one chemical used to disinfect water
Chlorine
Washing soda
- 15. Multiple Choice
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