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Total Questions : 112 | Page 12 of 12 pages
Question 111. The detention period of a lime soda treatment plant is ____________
  1.    1hour
  2.    3hours
  3.    2-4hours
  4.    4-7hours
 Discuss Question
Answer: Option C. -> 2-4hours
Answer: (c).2-4hours
Question 112. What is the pH at which recarbonation should be done?
  1.    7
  2.    4.5
  3.    8.2
  4.    9.5
 Discuss Question
Answer: Option D. -> 9.5
Answer: (d).9.5

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