Q.1
What is the process by which Total dissolved solids are removed?
  • a) Reverse Osmosis
  • b) Ultrafiltration
  • c) Adsorption
  • d) Clarification
Q.2
What is the limit of total dissolved solids in treated water which is to be used for the gardening purpose?
  • a) 1200 mg/L
  • b) 1100 mg/L
  • c) 1000 mg/L
  • d) 500 mg/L
Q.3
What is the percentage of TDS removed by the reverse osmosis membrane?
  • a) 97-99%
  • b) 50-60%
  • c) 60-70%
  • d) 70-90%
Q.4
What is the flux assumed while designing the reverse osmosis system to treat surface water?
  • a) 3-10 LMH
  • b) 14-28 LMH
  • c) 28-32 LMH
  • d) 32-40 LMH
Q.5
What is the flux assumed while designing the reverse osmosis system to treat well water?
  • a) 3-10 LMH
  • b) 13-23 LMH
  • c) 24-30 LMH
  • d) 30-35 LMH
Q.6
What is the flux assumed while designing the reverse osmosis system to treat RO permeate?
  • a) 3-10 LMH
  • b) 13-20 LMH
  • c) 23-30 LMH
  • d) 34-50 LMH
Q.7
What is the % flux decline per year assumed while designing the reverse osmosis system for treating surface water?
  • a) 7.3-9.9
  • b) 9.9-11.2
  • c) 11.2-14
  • d) 14-16
Q.8
What is the % flux decline per year assumed while designing the reverse osmosis system for treating well water?
  • a) 4.4-7.3
  • b) 8.5-11.5
  • c) 12-15
  • d) 15-18
Q.9
What is the % flux decline per year assumed while designing the reverse osmosis system for treating RO permeate water?
  • a) 2.3-4.4
  • b) 4.4-7.3
  • c) 7.3-9.9
  • d) 12-16
Q.10
What is the limit of LSI assumed while designing the reverse osmosis system without a scale inhibitor?
  • a) <0.2
  • b) 0.5-1
  • c) 1-2
  • d) 2-4
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