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MCQs

Total Questions : 66 | Page 2 of 7 pages
Question 11. _________ is the controlled application of waste water onto the land surface to achieve a specified level of treatment.
  1.    Water treatment
  2.    Wastewater treatment
  3.    Land treatment
  4.    Soil treatment
 Discuss Question
Answer: Option C. -> Land treatment
Answer: (c).Land treatment
Question 12. How are suspended solids removed from the soil?
  1.    Soil adsorption
  2.    Bacterial oxidation
  3.    Filtration
  4.    Chemical immobilization
 Discuss Question
Answer: Option C. -> Filtration
Answer: (c).Filtration
Question 13. How are the traces of organic compounds removed from the soil?
  1.    Denitrification
  2.    Soil filtration
  3.    Precipitation
  4.    Sorption
 Discuss Question
Answer: Option D. -> Sorption
Answer: (d).Sorption
Question 14. Which type of treatment methods are used for municipal and industrial wastewaters?
  1.    Slow rate
  2.    Rapid infiltration
  3.    Overflow
  4.    Main stream
 Discuss Question
Answer: Option A. -> Slow rate
Answer: (a).Slow rate
Question 15. Which of the following wastewater constituents are removed by chemical immobilization?
  1.    BOD
  2.    Suspended solids
  3.    Metals
  4.    Phosphorus
 Discuss Question
Answer: Option D. -> Phosphorus
Answer: (d).Phosphorus
Question 16. Organic matter + nutrients + O₂ → CO₂ + H₂O + _______
  1.    Biomass
  2.    O₂
  3.    Nutrients
  4.    Organic matter
 Discuss Question
Answer: Option A. -> Biomass
Answer: (a).Biomass
Question 17. What does SWOT stand for?
  1.    Solid Waste Operation and Treatment
  2.    Storm Water Operation and Treatment
  3.    Supercritical Water Oxidation
  4.    Storm and Wastewater Operation and Treatment
 Discuss Question
Answer: Option C. -> Supercritical Water Oxidation
Answer: (c).Supercritical Water Oxidation
Question 18. Which among these is the alternative BOD test for determining the oxygen consuming potential of a wastewater sample?
  1.    ThOD
  2.    COD
  3.    BOD
  4.    TOC
 Discuss Question
Answer: Option B. -> COD
Answer: (b).COD
Question 19. 2NH₃ +3O₂ -> 2NO₂⁻ + ___ + 2H₂O.
  1.    O₂
  2.    2H⁺
  3.    H⁺
  4.    2O₂
 Discuss Question
Answer: Option B. -> 2H⁺
Answer: (b).2H⁺
Question 20. What is the combination of using a photocatalyst and UV or visible light for the treatment of wastewater and gaseous pollutants is called?
  1.    Photocatalysis
  2.    Super critical water oxidation
  3.    Advanced oxidation process
  4.    Wet air oxidation
 Discuss Question
Answer: Option A. -> Photocatalysis
Answer: (a).Photocatalysis

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