TGPSC HMWSSB Manager 2015 Paper 2 · Question 87

Question 87 of the TSPSC Manager (Engineering), HMWSSB, 2015: Paper 2 (Civil Engineering) (1 November 2015). Try it first, then open the answer and explanation.

1. Manager 2015 Paper 2 (Civil) · Q87 · Environmental Engineering · Sewerage & Wastewater Treatment

   The natural process under which the flowing river gets cleaned is known as

   1. Oxidation
   2. Photosynthesis
   3. Reduction
   4. Self-purification
   Show answer

   Answer: (4) Self-purification

   Self-purification is the combined natural action of dilution, sedimentation, oxidation by bacteria, reaeration, sunlight and photosynthesis by which a river cleans itself; oxidation and photosynthesis are only parts of it.

Answer it in the practice appMake a topic-wise quiz