The external treatment of water does not include __________
A. Lime-soda process
B. Sequestration
C. Zeolites
D. Ion-exchange process
Answer:B
The external treatment of water does not include __________
A. Lime-soda process B. Sequestration C. Zeolites D. Ion-exchange process
Explanation: The external treatments of water include lime-soda, zeolites and ionexchange processes. It does not include sequestration.