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Washing powdered ore in running water so that light gangue floats away is:

AGlacial separation
BGravity separation
CGaseous separation
DGranular separation
Answer & Solution
Correct answer: B. Gravity separation
1. The heavy ore settles and the light waste is carried off. 2. The difference used is one of weight. 3. That method is gravity separation. _Source: syllabus Chemistry Part I, Class XII, General Principles and Processes of Isolation of Elements._
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