Water

_______is used for the Regeneration of Cation Exchange Resin

• HCI

• NaCl

• NaOH

• H2SO4

Chlorides and Sulphates causes ____types of hardness

• Permanent Hardness

• Temporary Hardness

Hardness of water always has to be expressed in terms of _____

• CaCl2 equivalent

• CaSO4 equivalents

• CaCO3 equivalents

• All of the above

Abbreviate EDTA ____

Complete the following question 'Hard water is water that_____

• Forms lather with soap

• Does not form lather with soap

_____ is the pH required in the determination of hardness of water by EDTA method

• 1 to 4

• 4 to 6

• 8 to 10

• 9 to 14

The standard BOD of water is taken after ____ days

• 3 days

• 2 days

• 5 days

• 4 days

Reverse Osmosis is the flow of solvent from ______

• Lower concentrated to Higher concentrated solution

• Higher concentrated to Lower concentrated solution

What is Permeate?

• Fluid that has retained in semi-permeable membrane

• Fluid that has pass through semi-permeable membrane

• Fluid that has to be passing through semi-permeable membrane

• The residue after filtration

Which of the following are in the order of decreasing order?

• Microfiltration,Nanofiltration,Reverse osmosis,Ultra Filtration

• Microfiltration,Ultrafiltration,Nano Filtration,Reverse Osmosis

• Ultrafiltration,Microfiltration,Nano Filtration,Reverse Osmosis

• Ultrafiltration,Nano Filtration,Reverse Osmosis,Microfiltration,