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SSC JE Civil Engineering Preliminary Exam in January 2018 | Practice test Day – 26




Welcome to your SSC JE Civil Engineering Objective Exam in 2018 Practice test Day - 26
Take an exciting test in SSC JE Civil Preliminary Exam in January 2018. 
You have only 15 mins to complete the test (15 Questions)
Wish you all the best!!!
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1. 5 days-biochemical oxygen demand (BOD5) is taken at a temperature of
2. The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological  decomposition of sewage, is known
3. The sewer which received discharge from two or more main sewers, is known as
4. The pH value of sewage is determined with the help of
5. The detention period for plain sedimentation water tanks, is usually
6. In a sludge tank, the gas mainly produced, is
7. In areas where rainy season is limited to a few months, the type of sewerage system  recommended is
8. In areas where light rains are uniformly distributed throughout the year, the type of sewerage  system to be adopted is
9. The sewage treatment units in which anaerobic decomposition of organic matter is used, are  called
10. For treating the sewage of a large city, you will recommend
11. The most efficient cross-section of sewers in a combined sewerage system is
12. A well oxidized sewage contains nitrogen mainly as
13. The formula which accepts the value of rugosity coefficient n = 0.012 to be used in Manning's  formula, is given by
14. In normal conditions, the period for sludge digestion, is
15. Skimming tanks are







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