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Live examination 25-06 -2019 [Environmental engineering]

Quiz by Wincentre Classes

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10 questions
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  • Q1
    A treatment system suitable for small and medium sized towns and cities is
    Aerated lagoon
    Activated sludge process
    Trickling filter
    Oxidation pond
    30s
  • Q2
    Highest BOD removal efficiency is achieved in
    Oxidation ditch
    Trickling filter
    Oxidation pond
    Aerated lagoon
    30s
  • Q3
    Putrefaction is a process of
    Aerobic decomposition
    Facultative decomposition
    Anerobic decomposition
    Intermitttent decomposition
    30s
  • Q4
    As a result of stabilisation of sewage effluent themost appropriate endproduct produced is
    Plant nitrate
    Alkalinity
    Hardness
    Chloride
    30s
  • Q5
    Chemical oxygen demand is
    Oxygen required to oxidise both biologically active and inactive inorganic matter
    Oxygen required to oxidise biologically inactive organic matter
    Oxygen required to oxidise both biologically active and inactive organic matter
    Oxygen required to oxidise biologically active organic matter
    30s
  • Q6
    A single rapid test to determine the pollution status of a river
    Chloride
    DO
    Total solids
    Nitrate
    30s
  • Q7
    For a continuos flow type sedimentation tanks
    Width of tank is kept about 6m
    Length of tank is kept 4-5 times width
    Maximum horizontal flow velocity is kept about 0.3m/min
    All of these
    30s
  • Q8
    No treatment of sewage is needed if dilutuon factor is
    Between 150 to 300
    Less than 150
    More than 500
    Between 150 to 250
    30s
  • Q9
    A sewer that unloads the sewage to point of treatment is called
    Outfall sewer
    Lateral sewer
    Trunk sewer
    House sewer
    30s
  • Q10
    Sludge does not contain waste water from
    Toilet
    Wash basin
    Bathroom
    Kitchen
    30s

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