Q 1 – Which one of the following is a quality of wastewater?
(a) Foul smell
(b) Bad taste
(c) Dirty look
(d) All of these
Ans. (d) All of these
Q 2 – Period 2005-2015 is being celebrated as the international decade for action on
(a) water for life
(b) education for all
(c) global war
(d) terrorism
Ans. (a) water for life
Q 3 – In sewerage manholes are located at every
(a) 20-25 m
(b) 50-60 m
(c) 90-100 m
(d) 100-110 m
Ans. (b) 50-60 m
Q 4 – Which one of the following is a step in wastewater treatment?
(a) Aeration
(b) Filtration
(c) Chlorination
(d) All of these
Ans. (d) All of these
Q 5 – Sludge in separate tanks is decomposed to get biogas by
(a) yeasts
(b) aerobic bacteria
(c) anaerobic bacteria
(d) none of these
Ans. (c) anaerobic bacteria
Q 6 – Which one of the following is used in vermi-processing toilet?
(a) Earthworm
(b) Cockroach
(c) Both of these
(d) None of these
Ans. (a) Earthworm
Q 7 – Sewage is mainly a
(a) liquid waste
(b) Solid waste
(c) gaseous waste
(d) Mixture of solid and gas
Ans. (a) liquid waste
Q 8 – Which of the following is/are products of wastewater treatment?
(a) Biogas
(b) Sludge
(c) Both Biogas and sludge
(d) Aerator
Ans. (c) Both Biogas and sludge
Q 9 – Open drain system is a breeding place for which of the following:
(a) Files
(b) Mosquitoes
(c) Organisms which cause diseases
(d) All of these
Ans. (d) All of these
Q 10 – Which of the following is not a source of waste water?
(a) Sewers
(b) Homes
(c) Industries
(d) Hospitals
Ans. (a) Sewers
Q 11 – Water that is not fit for use is called
(a) clean water
(b) wastewater
(c) both (a) and (b)
(d) none of these
Ans. (b) wastewater
Q 12 – Which of the following is not a source of wastewater?
(a) Sewers
(b) Homes
(c) Industries
(d) Hospitals
Ans. (a) Sewers
Q 13 – The period of International Decade for action on ‘Water for Life’ is
(a) 2000-2010
(b) 2005-2015
(c) 2010-2020
(d) 2003-2013
Ans. (b) 2005-2015
Q 14 – The process of removing pollutants in water before it enter a water body is called
(a) cleaning of water
(b) refining
(c) filtering of water
(d) none of these
Ans. (a) cleaning of water
Q 15 – Which of the following is a part of inorganic impurities of the sewage?
(a) Pesticides
(b) Urea
(c) Phosphates
(d) Vegetable waste
Ans. (c) Phosphates
Q 16 – Wastewater released by homes, factories, industries and other users is known as
(a) polluted water
(b) sewage
(c) both (a) and (b)
(d) none of these
Ans. (b) sewage
Q 17 – Suspended impurities contained by sewage are called
(a) contaminants
(b) sludge
(c) grey water
(d) none of these
Ans. (a) contaminants
Q 18 – A network of big and small pipes under the ground for wastewater management is known as
(a) sewage
(b) sewerage
(c) manhole
(d) channel
Ans. (b) sewerage
Q 19 – Solid waste extracted during sewage treatment is known as
(a) sewage
(b) sludge
(c) biogas
(d) contaminants
Ans. (b) sludge
Q 20 – Which portion of WWTP retains large objects like rags, sticks, etc.?
(a) Bar screen
(b) Sludge
(c) Sedimentation tank
(d) Sewerage
Ans. (a) Bar screen
Q 21 – Name the scraper that removes solids like forced from the wastewater.
(a) Skimmer
(b) Sludge
(c) Tank
(d) All of these
Ans. (b) Sludge
Q 22 – The equipment that removes floatable particles from wastewater is
(a) sludge
(b) bar screen
(c) skimmer
(d) sedimentation tank
Ans. (c) skimmer
Q 23 – The tree that helps in wastewater treatment by absorbing water greatly and releasing pure water in environment through transpiration is
(a) peepal
(b) banyan
(c) eucalyptus
(d) banana
Ans. (c) eucalyptus
Q 24 – Which of the following is a step of wastewater treatment?
(a) Aeration
(b) Chlorination
(c) Filtration
(d) All of these
Ans. (d) All of these
Q 25 – In a filtration plant, water is filtered using layers of
(a) sand and clay
(b) clay and fine gravel
(c) sand and fine gravel
(d) Sand, fine gravel and medium gravel
Ans. (d) Sand, fine gravel and medium gravel
Q 26 – Open drain system is a breeding place for which of the following?
(a) Flies
(b) Mosquitoes
(c) Organisms which cause diseases
(d) All of these
Ans. (d) All of these
Q 27 – The full form of WWP is
(a) World Wide Transport Programme
(b) Waste Water Treatment Plant
(c) World Worker Talent Programme
(d) None of these
Ans. (b) Waste Water Treatment Plant
Q 28 – Sewage is mainly a
(a) liquid waste
(b) solid waste
(c) gaseous waste
(d) Mixture of solid and gas
Ans. (a) liquid waste
Q 29 – Which of the following is not a water-borne disease?
(a) Cholera
(b) Tuberculosis
(c) Typhoid
(d) Dysentery
Ans. (b) Tuberculosis
Q 30 – Which of the following is the characteristic quality of wastewater?
(a) Dirty look
(b) Foul smell
(c) Bad taste
(d) All the above
Ans. (d) All the above