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MCQs

Total Questions : 71 | Page 2 of 8 pages
Question 11. The normal dose of chlorine during break point chlorination is ____________
  1.    0.5-1ppm
  2.    0.1-0.2ppm
  3.    3-7ppm
  4.    1-2ppm
 Discuss Question
Answer: Option B. -> 0.1-0.2ppm
Answer: (b).0.1-0.2ppm
Question 12. Which of the following regarding break point chlorination is wrong?
  1.    It will have adequate chlorine residual
  2.    It will remove manganese
  3.    It will remove taste and odor
  4.    It is determined by physical test
 Discuss Question
Answer: Option D. -> It is determined by physical test
Answer: (d).It is determined by physical test
Question 13. The process of removal of excess chlorine from water is ____________
  1.    Plain chlorination
  2.    Dechlorination
  3.    Super chlorination
  4.    Double chlorination
 Discuss Question
Answer: Option B. -> Dechlorination
Answer: (b).Dechlorination
Question 14. Which color is formed when orthotolidine is oxidized by chlorine?
  1.    Yellow
  2.    Orange
  3.    Green
  4.    Blue
 Discuss Question
Answer: Option A. -> Yellow
Answer: (a).Yellow
Question 15. _______ is the application of chlorine beyond the stage of the break point.
  1.    Plain chlorination
  2.    Pre chlorination
  3.    Super chlorination
  4.    Double chlorination
 Discuss Question
Answer: Option C. -> Super chlorination
Answer: (c).Super chlorination
Question 16. Which type of chlorine is represented by the green line as shown in the following figure? Which Type Of Chlorine Is Represented By The Green Line As ...
  1.    Free residual chlorine
  2.    Ammonia chlorine
  3.    Combined residual chlorine
  4.    Residual chloramine
 Discuss Question
Answer: Option A. -> Free residual chlorine
Answer: (a).Free residual chlorine
Question 17. Which of the following is wrong regarding disinfection?Which Of The Following Is Wrong Regarding Disinfection?
  1.    It should be readily available at reasonable cost
  2.    Its method of application should be simple
  3.    It should render the water toxic for its intended use
  4.    It should act as safeguard against re-contamination
 Discuss Question
Answer: Option C. -> It should render the water toxic for its intended use
Answer: (c).It should render the water toxic for its intended use
Question 18. Which water treatment process is done after filtration of water?Which Water Treatment Process Is Done After Filtration Of Wa...
  1.    Primary sedimentation
  2.    Disinfection
  3.    Secondary sedimentation
  4.    Flocculation
 Discuss Question
Answer: Option B. -> Disinfection
Answer: (b).Disinfection
Question 19. Which type of chlorine is represented by the red line as shown in the following figure?Which Type Of Chlorine Is Represented By The Red Line As Sho...
  1.    Free residual chlorine
  2.    Ammonia chlorine
  3.    Combined residual chlorine
  4.    Residual chloramine
 Discuss Question
Answer: Option B. -> Ammonia chlorine
Answer: (b).Ammonia chlorine
Question 20. Boiling of water is a _____ method of disinfection.Boiling Of Water Is A _____ Method Of Disinfection.
  1.    Physical
  2.    Chemical
  3.    Mechanical
  4.    Electrical
 Discuss Question
Answer: Option A. -> Physical
Answer: (a).Physical

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