1. What is the minimum quantity of dissolved oxygen that should be present in the treated sewage? 10ppm 4ppm 6ppm 1ppm 2. Foaming is caused by the formation of ___________ Oils and alkalis Ketones Alcohols Acids 3. What is the first step in the sewage treatment process? Digestion? Dewatering Phosphorus recovery Thickening 4. Coastal water shows major differences in ___________ Conductivity Pollution Salinity Sewage 5. __________ requires EPA to establish regulations to protect human health from contaminants present in drinking water. ASAW SWSA SDWA SAWD 6. The ____________ is an important requirement of the aquatic life. Dissolved methane Dissolved oxygen Dissolved nitrogen Dissolved chlorine 7. A large amount of soil can move with the run off called ___________ Soil conservation Soil pollution Soil erosion Soil moving 8. As far as safer handling is considered, which of the following is used for fluoridation? Hydrofluosilicic acid Sodium fluoride Sodium silico fluoride Sodium fluro carbonate 9. The discharge of regulated chemicals into surface waters is controlled by __________ PDAC SARA NPDES CERCLA 10. What is the amount of solids released into wastewater by human beings? 60 gpcd 30 gpcd 40 gpcd 70 gpcd 11. What is the full form of GAP? Ganga action pre distribution Ganga affected pre distribution Ganga affected plan Ganga action plan 12. Which of the following is the pure compound? Sodium fluoride Hydrofluosilicic acid Sodium silico fluoride Sodium fluro carbonate 13. Which chemical is used for the titration of waste water for finding its chloride content? Potassium dichromate Potassium chloride Sodium chloride Potassium chromate 14. Which of the following is not used as a fluoride compound? Sodium silico fluoride Sodium fluoride Hydrofluosilicic acid Sodium fluro carbonate 15. Fishes can store more quantity of ___________ in their bodies. Bismuth Mercury Palladium Chlorine 16. ___________ poisoning water in Japan is from fishes. Bismuth Palladium Arsenic Antimony 17. Which section of CWA is responsible for monitoring of wetlands? Section 403 Section 405 Section 402 Section 404 18. In which process, the fluoride content of water is raised? Fluoridation Defluoridation Chlorination Flocculation 19. The temperature of sewage increases. What will be the effect on the dissolved oxygen in sewage? Decrease No effect Remains constant Increase 20. Waste water released from _________ are not the sources of bacteria. Tanning Municipalities Sanitaria Industries 21. ________ is used to find the D.O content of sewage. Olfactometer Kjeldahl method Winkler method Chromatography 22. Amoebic dysentery is caused by ___________ Viruses Helminth Protozoa Bacteria 23. Which CWA program controls water pollution by regulating point sources? SPCC PDA NPDES PCC 24. What is the full form of BOD? Biological oxygen deep water Biochemical oxygen demand Biometric oxygen deep water Biological oxygen demand 25. Pollution enters into the water system in ___________ ways. 3 1 4 2 26. The maximum amount of pollution that each waterway could absorb is known as _________ TDS TMDL TDSML TSML 27. What happens when water contains 8-20 ppm of fluoride concentration? Blue baby disease Mottling of teeth Crippling fluorosis Dental fluorosis 28. Monitoring systems can be carried out by using __________ Motors Automatic sensors Automatic motors Turbines 29. The term 'Sullage' refers to: Septic wastewater Wastewater from kitchen, laundry Fresh wastewater Toxic wastewater 30. In which year was the term Biosolids introduced? 1990 1995 2000 1998 31. The presence of which of the following in sewage indicates nitrogen content before decomposition of sewage? Nitrites Free ammonia Albuminoid nitrogen Nitrates 32. Imhoff cone is used to measure the _______ Total solids Suspended solids Settleable solids Dissolved solids 33. The decomposition of sewage takes place, causing a pungent smell. Which of the following causes the pungent smell? CO2 H2SO4 HCL H2S 34. The CWA reduced the amount of pollution from _________ Chemicals Point sources Non-point sources Mining 35. The process of reducing the fluoride content from water is called _____ Chlorination Flocculation Defluoridation Fluoridation 36. Which CWA program manages non-point source pollution? NSGOP NSPPP NPSMP NPSRA 37. When did CWA come into existence? 1970 1973 1972 1971 38. Disinfection of water in our country is mainly done by ____________ Hydration Chlorination Oxygenation Filtration 39. Which minerals and in what form are present in ground water? Fe & Mn in Ferrous and Manganous Fe & Mn in Ferric and manganous Fe & Cu in Ferric and Cupric Cu & Mn in Cuprous and manganous 40. How many types of wastewater treatment plants are there based on the type of wastewater? 2 3 5 4 41. Helminth in the water causes __________ Cholera Hook worm Amoebic dysentery Typhoid 42. From which of the following methods can toxic chemicals be removed? Absorption Sorption Dewatering Adsorption 43. On how many conditions does the intervention of wastewater depend on? 6 5 7 4 44. Which of the following disease is caused due to lack of nitrates? Meningitis Tuberculosis Methemoglobinemia Diphtheria 45. Bacteria and micro organisms present in the water will cause _________ in human and animals. Indigestion Cancer Brain tumour Intestinal tract 46. The presence of free ammonia in sewage represents ____________ Water pollution Air pollution Recent pollution Old pollution 47. The permissible dose of chloride in domestic sewage is __________ 250ppm 1ppm 120ppm 10ppm 48. Infectious hepatitis is caused by ___________ Bacteria Helminth Viruses Protozoa 49. The propulsion of water into steam drum by extremely rapid, almost explosive boiling of water at the heating surface is called ___________ Priming Corrosion Caustic embrittlement Foaming 50. The Federal Water Pollution Control Act of 1948 was the first major U.S. law to address water pollution. 1946 1948 1947 1945 Submit Answers Retake Test More Civil Engineering Study Material › Civil Engineering Mock Tests with AnswersAdvanced Construction and Equipments Mock TestAdvanced Construction Technology Mock TestBasics of Civil Engineering Mock TestBuilding Construction Mock TestBuilding Materials Mock TestBuilding Services Mock TestBuilding Technology and Architectural Planning Mock TestConcrete Technology and Design Mock TestConcrete Technology Mock TestConstruction Management Mock TestConstruction Project Management Mock TestConstruction Quality Control and Monitoring Mock TestConstruction Technology Mock Test Design of Masonry Structures Mock TestDesign of Reinforced Cement Concrete Elements Mock TestDesign of Steel Structures Mock TestDock and Harbour Engineering Mock TestElements of Remote Sensing Mock TestEngineering Geology Mock TestEngineering Graphics Mock TestEngineering Mechanics Mock TestEstimating and Costing Mock TestEstimation, Costing and Valuation Engineering Mock TestFluid Mechanics Mock TestFoundation engineering Mock Test Geotechnical Engineering Mock TestHighway Engineering Mock TestHydraulics and Fluid Mechanics Mock TestHydraulics Machines Mock TestHydraulics Mock TestIrrigation Engineering Mock TestMaintenance and Rehabilitation of Structures Mock TestPrefabricated Structures Mock TestProfessional Ethics in Engineering Mock TestPublic Health Engineering Mock TestRailway Bridge and Tunnel Engineering Mock TestRailway Engineering Mock Test Railways, Airports, Docks and Harbour Engineering Mock TestRCC Structures Design Mock TestSocietal and Global Impact Mock TestSoil Mechanics and Foundations Mock TestStructural Analysis Mock TestStructural Design and Drawing Mock TestStructural Design Mock TestStructural Mechanics Mock TestSurveying Mock TestWaste Water Treatment Mock TestWater Supply Engineering Mock TestWater and Wastewater Engineerin Mock Test Civil Engineering Mock TestsCivil Engineering MCQ Questions with Answers
