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MCQs

Total Questions : 112 | Page 5 of 12 pages
Question 41. The taste produced by a microorganism, can be controlled by ____________
  1.    Potassium per-manganate
  2.    Potassium dichromate
  3.    Sodium chloride
  4.    Iodine
 Discuss Question
Answer: Option A. -> Potassium per-manganate
Answer: (a).Potassium per-manganate
Question 42. Which of the following is used for the control of taste and odor in water?
  1.    Sedimentation
  2.    Coagulation
  3.    Filtration
  4.    Activated carbon
 Discuss Question
Answer: Option D. -> Activated carbon
Answer: (d).Activated carbon
Question 43. Which of the following regarding ozonation is incorrect?
  1.    Improves the appearance of water
  2.    Removes traces of color
  3.    Remove odor
  4.    Remove phenolic and algae taste
 Discuss Question
Answer: Option D. -> Remove phenolic and algae taste
Answer: (d).Remove phenolic and algae taste
Question 44. _______ is produced by passing a carbonaceous material through a heating mechanism at high temperature.
  1.    Potassium per-manganate
  2.    Potassium dichromate
  3.    Activated carbon
  4.    Iodine
 Discuss Question
Answer: Option C. -> Activated carbon
Answer: (c).Activated carbon
Question 45. Granular activated carbon has a surface area of ____________
  1.    100-200m²/g
  2.    500-1400m²/g
  3.    400-600m²/g
  4.    500-900m²/g
 Discuss Question
Answer: Option B. -> 500-1400m²/g
Answer: (b).500-1400m²/g
Question 46. Which of the following is a carbonaceous material?
  1.    Charcoal
  2.    Petroleum
  3.    Hydrogen sulfide
  4.    Sodium chloride
 Discuss Question
Answer: Option A. -> Charcoal
Answer: (a).Charcoal
Question 47. Which of the following is not a property of activated carbon?
  1.    It is impermeable
  2.    It has many carbon atoms with free valencies
  3.    It is available in granular as well as powder form
  4.    It has a prolonged suspension
 Discuss Question
Answer: Option A. -> It is impermeable
Answer: (a).It is impermeable
Question 48. When activated carbon is applied at more than one point, then it is called ________
  1.    Dual treatment
  2.    Split treatment
  3.    Sludge treatment
  4.    Carbonaceous treatment
 Discuss Question
Answer: Option B. -> Split treatment
Answer: (b).Split treatment
Question 49. Activated carbon in powder form is applied in the mixing basin.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 50. The thickness of the activated carbon filter bed is ____________
  1.    10-20cm
  2.    30-80cm
  3.    75-100cm
  4.    40-50cm
 Discuss Question
Answer: Option C. -> 75-100cm
Answer: (c).75-100cm

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