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What is the color of the surface coating formed during the filtration process?

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in Environmental Engineering by (81.4k points)
What is the color of the surface coating formed during the filtration process?

(a) White

(b) Brown

(c) Green

(d) Reddish brown

This question was posed to me during an interview for a job.

Asked question is from Theory and classification of Filtration topic in portion Filtration of Environmental Engineering

1 Answer

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Correct choice is (d) Reddish brown

Easiest explanation: The surface coating is formed by the reddish brown deposit of partially decomposed organic matter together with Iron, Alumina, Manganese and Silica.

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