Which of the functional groups are not present in cation exchangers? Options: A . &nbspSO₃⁻ B . &nbspOPO₃⁻ C . &nbspNR₃⁺ D . &nbspCOO⁻

Which of the functional groups are not present in cation exchangers?

Question

Which of the functional groups are not present in cation exchangers?

Options:

A . SO₃⁻

B . OPO₃⁻

C . NR₃⁺

D . COO⁻

Answer: Option C
Answer: (c).NR₃⁺

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