Quiz on Ion Exchange and Demineralization

What is the primary function of a demineralization plant?

• To increase water temperature

• To filter out solid debris

• To remove inorganic salts from water

• To add minerals to water

Which type of ion is positively charged?

• Anion

• Cation

• Hydroxide

• Organic ion

What is the main disadvantage of ion exchange?

• Production of saline waste

• High cost of operation

• Inefficiency in removing impurities

• Complexity of the process

What is the role of organic scavengers in water treatment?

• To eliminate unwanted taste and odor

• To remove dissolved salts

• To increase water hardness

• To add nutrients to the water

What is the chemical formula for water?

• H2O

• CO2

• O2

• NaCl

Which ions must be removed from water before it can be used as boiler feedwater?

• Sodium and potassium

• Calcium and magnesium

• Chloride and sulfate

• Hydroxide and bicarbonate

What type of resin is used for cation exchange?

• Anion exchange resin

• Organic resin

• Activated carbon

• Cation exchange resin

What happens during the regeneration of exhausted resins?

• Resins are discarded

• Resins are cleaned with water

• Resins are replaced with new ones

• Resins are returned to a fresh state

What is the result of combining H+ and OH- ions?

• Salt

• Hydrogen gas

• Carbon dioxide

• Water

Which of the following industries relies on ion exchange for producing pure water?

• Construction industry

• Agriculture

• Nuclear power stations

• Textile industry