Which of these methods does not remove hardness?

1.	Which of these methods does not remove hardness?
A.	Reverse osmosis
B.	Ion exchange resins
C.	Chelating agents
D.	Sedimentation
Answer» E.

Discussion

No Comment Found

Related MCQs

Calculate the fast rinse period of the regenerant liquid for a softener system with the given below data.Calcium Load: 40 ppm as CaCO3Capacity: 37 Kg/m3Correction factor: 0.9Flow rate: 235 m3/hrOperation hours: 10 hrs
Calculate the rinse volume of the regenerant liquid for the softener system with the given below data.Calcium Load: 60 ppm as CaCO3Capacity: 37 Kg/m3Correction factor: 0.9Flow rate: 35 m3/hrOperation hours: 10 hrs
Calculate the regenerant flow required for the softener system with the given below data.Calcium Load: 85 ppm as CaCO3Capacity: 37 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrs
Calculate the fast rinse flow of the regenerant liquid for a softener with the below given data.Magnesium Load: 10 ppm as CaCO3Capacity: 47 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrs
Calculate the diameter of the softener vessel required for the below given data.Magnesium Load: 500 ppm as CaCO3Capacity: 57 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrsLinear velocity: 16.6 m3/h/ m3Space velocity: 20 m3/h/ m3
Calculate the area of the softener vessel required for the following information.Magnesium Load: 180 ppm as CaCO3Capacity: 47 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrsLinear velocity: 16.6 m3/h/ m3Space velocity: 20 m3/h/ m3
Calculate the theoretical softener resin bed depth for the following data:Magnesium Load: 130 ppm as CaCO3Capacity: 47 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrsLinear velocity: 16.6 m3/h/ m3Space velocity: 20 m3/h/ m3
Calculate the amount of softener resin required for the following information.Magnesium: 80 ppm as CaCO3Capacity: 47 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrs
Which is the commonly used chelator?
________ is used in detergents to soften water.

Which of these methods does not remove hardness?

Discussion

No Comment Found

Related MCQs

Reply to Comment