Question

__________ is an operation designed to force agitation in the fluid and induce coagulation.

(a) Sedimentation

(b) Flocculation

(c) Disinfection

(d) Aeration

This question was posed to me during an interview.

This is a very interesting question from Flocculation and Clarification topic in portion Sedimentation of Environmental Engineering

Answer 1

The correct answer is (b) Flocculation

For explanation I would say: Flocculation is an agitating process in which destabilized particles are brought into contact to promote agglomeration.