Loading is a process in which (A) Impurities become heavy and sink to the bottom (B) Impurities float on the top (C) Impurities vaporize (D) None of these

Impurities become heavy and sink to the bottom

Loading is a process in which heavy particles settle down at the bottom of the container and water comes up . A substance called alum is used to fast the process of loading.

So, the correct option is (A)

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