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MCQs

Total Questions : 112 | Page 2 of 12 pages
Question 11. In which desalination process, solar energy is used?
  1.    Reverse osmosis
  2.    Freezing
  3.    Electro-dialysis
  4.    Solar evaporation
 Discuss Question
Answer: Option D. -> Solar evaporation
Answer: (d).Solar evaporation
Question 12. Aswan high dam is situated in
  1.    China
  2.    Egypt
  3.    America
  4.    Europe
 Discuss Question
Answer: Option B. -> Egypt
Answer: (b).Egypt
Question 13. The solar evaporation can yield about ___ kg of fresh water per day per m² of basin surface.
  1.    5
  2.    10
  3.    15
  4.    20
 Discuss Question
Answer: Option A. -> 5
Answer: (a).5
Question 14. Due to the Aswan dam in Egypt, the countries cultivated area has been increased to
  1.    4-8 %
  2.    3-5%
  3.    4-7%
  4.    2-5%
 Discuss Question
Answer: Option A. -> 4-8 %
Answer: (a).4-8 %
Question 15. Which organism is the carrier of sleeping sickness disease?
  1.    Snail
  2.    Tsetse Fly
  3.    Guinea worm
  4.    Fly
 Discuss Question
Answer: Option B. -> Tsetse Fly
Answer: (b).Tsetse Fly
Question 16. Dealkalization results in removal of all the ions from the water.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 17. Organic contaminants are removed from the water by the process of ______
  1.    Water softening
  2.    Demineralization
  3.    Absorption
  4.    Adsorption
 Discuss Question
Answer: Option D. -> Adsorption
Answer: (d).Adsorption
Question 18. What is the size of the coarse screen used in pretreatment of water?
  1.    25mm
  2.    50mm
  3.    75mm
  4.    100mm
 Discuss Question
Answer: Option A. -> 25mm
Answer: (a).25mm
Question 19. The coarse screen is inclined at _____ to facilitate the cleaning or raking.
  1.    300
  2.    350
  3.    450
  4.    900
 Discuss Question
Answer: Option C. -> 450
Answer: (c).450
Question 20. Which process of water treatment is done to avoid floating debris, branches, trees or other large particles suspended in water?
  1.    Screening
  2.    Aeration
  3.    Primary sedimentation
  4.    Secondary sedimentation
 Discuss Question
Answer: Option A. -> Screening
Answer: (a).Screening

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