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1. Which one of the following is a quality of wastewater?
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Foul smell
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Bad taste
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Dirty look
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All of these
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Explanation
All of these
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2. Period 2005-2015 is being celebrated as the international decade for action on
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water for life
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education for all
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global war
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terrorism
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Explanation
water for life
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3. In sewerage manholes are located at every
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20-25 m
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50-60 m
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90-100 m
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100-110 m
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Explanation
50-60 m
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4. Which one of the following is a step in wastewater treatment?
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Aeration
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Filtration
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Chlorination
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All of these
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Explanation
All of these
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5. Sludge in separate tanks is decomposed to get biogas by
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yeasts
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aerobic bacteria
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anaerobic bacteria
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none of these
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Explanation
anaerobic bacteria
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6. Which one of the following is used in vermi-processing toilet?
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Earthworm
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Cockroach
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Both of these
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None of these
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Explanation
Earthworm
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7. Sewage is mainly a
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liquid waste
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Solid waste
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gaseous waste
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Mixture of solid and gas
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Explanation
liquid waste
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8. Which of the following is/are products of wastewater treatment?
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Biogas
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Sludge
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Both Biogas and sludge
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Aerator
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Explanation
Both Biogas and sludge
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9. Open drain system is a breeding place for which of the following:
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Files
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Mosquitoes
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Organisms which cause diseases
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All of these
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Explanation
All of these
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10. Which of the following is not a source of waste water?
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Sewers
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Homes
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Industries
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Hospitals
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Explanation
Sewers
Practice More On
Wastewater Story
Quiz 1