Ion Exchange

Ion-exchange resin is __________

• Soluble

• Organic polymer with porous structure

• Low molecular weight

• Linear

Which of the following ion get released from the cation exchange column?

• Ca+2

• K+

• Na+

• H+

Which of the following ion get released from the anion exchange column?

• SO4-2

• Cl–

• OH–

• CO3-2

Ion-free water coming out from the exchanger is known as ____________

• Demineralised water

• Potable water

• Disinfected water

• Coagulated water

Which of the following statement is incorrect about the demineralised water?

• It can be made either by distillation or by using cation and anion exchangers

• It is fit for domestic use

• It is very good for use in high pressure boilers

• It is as pure as distilled water

The exhausted cation exchange column is regenerated by passing a solution of ____________

• Conc. NaCl

• Conc. HCl

• Dil. HCl

• Dil. NaCl

The exhausted anion exchange column is regenerated by passing a solution of ____________

• Dil. KOH

• Conc. KOH

• Conc. NaOH

• Dil. NaOH

In ion-exchange process, the capital cost is _________ and the operational expenses are ______________

• High, low

• High, high

• Low, low

• Low, high

The residual hardness in ion-exchange process is ____________

• 0-2 ppm

• 10-15 ppm

• 20-30 ppm

• 5-10 ppm

The raw water used for ion-exchange process should be turbid.

• True

• False