Which of the following, do you think are the synthetic resins present in removal of permanent hardness?
A. cation exchange resins only
B. anion exchange resins only
C. both cation exchange resins and anion exchange resins
D. neither cation exchange resins nor anion exchange resins
Answer:B
Which of the following, do you think are the synthetic resins present in removal of permanent hardness?
A. cation exchange resins only B. anion exchange resins only C. both cation exchange resins and anion exchange resins D. neither cation exchange resins nor anion exchange resins