Question

In comparison to the zeolite process for the removal of permanent hardness, the synthetic resins method is:

• A. Less efficient as it exchanges only anions
• B. More efficient as it can exchanges only cations
• C. Less efficient as the resins cannot be regenerated
• D. More efficient as it can exchange both cations as well as anions

Answer 1

The correct option is D

More efficient as it can exchange both cations as well as anions

Solution:

• In the zeolite process, it utilizes the mineral zeolites as the exchanging resins for only cations in hard water.
• In synthetic resins method, it utilizes many different resins for ion exchange for both cations and anions.
• So, the synthetic resins method is more sufficient compared to the zeolite process.

So, the correct option is D.