Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 3 (Q.No. 38)
Self-purification of running streams may be due to
sedimentation, oxidation land coagulation
dilution, sedimentation and oxidation
dilution, sedimentation and coagulation
dilution, oxidation and coagulation
Answer: Option
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1 comments Page 1 of 1.

Sadashiva said:   6 years ago
Option (b) is correct. The major physical processes involved in self purification of watercourses are dilution, sedimentation and resuspension, gas transfer, and heat transfer. Gas transfer includes oxidation.

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