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MCQs

Total Questions : 476 | Page 43 of 48 pages
Question 421. What is the average permeating of SiO₂ in reverse osmosis?
  1.    0.2-0.3
  2.    0.4-0.6
  3.    0.6-0.8
  4.    0.8-1
 Discuss Question
Answer: Option C. -> 0.6-0.8
Answer: (c).0.6-0.8
Question 422. Water softener units work most efficiently with particulate 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 423. Which of these have a negative electrical charge?
  1.    Calcium
  2.    Magnesium
  3.    Sodium
  4.    Chloride
 Discuss Question
Answer: Option D. -> Chloride
Answer: (d).Chloride
Question 424. The ions with opposite charge can be exchanged.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 425. While designing the demineralisation plant what is considered as the strong acidic cation load?
  1.    Alkaline hardness
  2.    Alkaline hardness + EMA
  3.    EMA
  4.    Silica
 Discuss Question
Answer: Option B. -> Alkaline hardness + EMA
Answer: (b).Alkaline hardness + EMA
Question 426. While designing the demineralisation plant what is considered as the weak acidic cation load?
  1.    Alkaline hardness
  2.    Alkaline hardness + EMA
  3.    EMA
  4.    Silica
 Discuss Question
Answer: Option A. -> Alkaline hardness
Answer: (a).Alkaline hardness
Question 427. While designing the demineralisation plant what is considered as the strong basic anion load?
  1.    Alkaline hardness
  2.    Alkaline hardness + EMA+CO₂
  3.    EMA+Silica
  4.    Silica+CO₂+ Alkalinity+EMA
 Discuss Question
Answer: Option D. -> Silica+CO₂+ Alkalinity+EMA
Answer: (d).Silica+CO₂+ Alkalinity+EMA
Question 428. While designing the demineralisation plant what is considered as the weak basic anion load?
  1.    Alkaline hardness
  2.    Alkaline hardness + EMA
  3.    EMA
  4.    Silica
 Discuss Question
Answer: Option C. -> EMA
Answer: (c).EMA
Question 429. When is strong basic anion not necessary?
  1.    Silica is nil
  2.    CO₂ is nil
  3.    Fluroine is nil
  4.    Sulphate is nil
 Discuss Question
Answer: Option A. -> Silica is nil
Answer: (a).Silica is nil
Question 430. In case along with silica, there is high content in sulphide and chloride what should be used?
  1.    WBA
  2.    WBA and SBA
  3.    SBA
  4.    SBA,WBA and WAC
 Discuss Question
Answer: Option B. -> WBA and SBA
Answer: (b).WBA and SBA

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