Which of the following is not used as a surface active agent in a flocculation operation ?
Correct answer: B. Quartz
- A. Sodium silicate
- B. Quartz
- C. Lime
- D. Alumina
Explanation
Quartz is an inert mineral and is not normally used as a surface-active or conditioning agent in flocculation. Sodium silicate, lime, and alumina can modify particle surfaces or promote aggregation.
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