Question

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Answer 1

Answer:

Laboratory fractionating columns

Most commonly used is either a Vigreux column or a straight column packed with glass beads or metal pieces such as Raschig rings. Fractionating columns help to separate the mixture by allowing the mixed vapors to cool, condense, and vaporize again in accordance with Raoult's law.

2. In a loading tank, coagulants like lime and alum are added to the water, which causes suspended particulates to clump together that allows the sedimentation of the suspended particles.

3.Aeration in an activated sludge process is based on pumping air into a tank, which promotes the microbial growth in the wastewater. The microbes feed on the organic material, forming flocks which can easily settle out.