alleryDiatomaceous earth used as a filter aid is mainly what?
ASalt
BIron
CStarch
DSilica
Answer & Solution
Correct answer: D. Silica
1. Recall the idea: Kieselguhr is composed primarily of silica.
2. The correct choice is: Silica.
3. The other options describe different methods or properties and do not fit this fact.
_Source: Wikipedia, Filtration_
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