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