11. R.M.O. expenses include
12. 15 cumecs, the depth d and width are related by For drains up to
13. The settling velocity of the particles larger than 0.06 mm in a settling tank of depth 2.4 is 0.33 m per sec. The detention period recommended for the tank, is
14. The discharge per unit plan area of a sedimentation tank, is generally called
15. The recommended detention period for grit chambers is
16. Clogging of sewers, is caused due to
17. A rainfall may be classified as acidic if its pH value is less or equal to
18. In very first stage of decomposition of the organic matter in sewage
19. The layers of vegetable wastes and night soil alternatively piled above the ground to form a mound, is called
20. Flocculated particles do not change their
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