Question

Cation and Anion exchange resins are used in ______ process.

• A. ion -exchange process
• B. fiber exchange process
• C. charge exchange process
• D. none of these

Answer 1

The correct option is A ion -exchange process

Commercial water softeners often use ion exchange resins. The resin beads have sodium ions attached to them. When the hard water passes through the column, the calcium and magnesium ions are replaced with the sodium ions. The calcium and magnesium ions are left attached to the beads, while the water leaving the column contains more sodium ions. The hard water is converted into soft water.

Cation and Anion exchange resins are used in ion exchange process.