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Foaming is caused by the formation of ___________

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in Engineering Chemistry II by (789k points)
Foaming is caused by the formation of ___________

(a) Acids

(b) Alcohols

(c) Oils and alkalis

(d) Ketones

This question was posed to me in a job interview.

My question is from Boiler Feed Water in chapter Water and its Treatment of Engineering Chemistry II

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The correct choice is (c) Oils and alkalis

To elaborate: Foaming is caused by the formation of oils and alkalis. Oils and Alkalis becomes sticky and greasy on the surface and hence results in foaming.

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