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Environmental Engineering MCQ

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1. In a dam project geological investigations are to get information about




2. Water obtained from _____ is generally known as sub surface water.




3. Which one of the following is not a type of tube well?




4. Which one of the following is not a dissolved impurity of water




5. Which one of the following is not turbidity test on water?




6. Water with maximum alkalinity pH value is




7. Coli or E. Coli are harmless organisms but their presence in water indicates the




8. Floatation is a method of water purification by




9. Which one of the following is not a coagulating agent?




10. In a rapid sand filter




11. Ground water is usually free from




12. The suitable method for disinfection of swimming pool water is




13. Which one of the following would contain water with the maximum amount of turbidity?




14. A garden developed over top of surface water tank is known as




15. Temporary hardness in water is caused by the presence of




16. Bacteria that need oxygen to live are known as




17. Suspended impurities in water is




18. A timber dam is a




19. Stone ware pipes are




20. detention dam




21. Process of killing pathogenic bacteria from water is known as




22. Bacteria that survive in the absence of oxygen are known as




23. Bacteria that survive in the absence of oxygen are known as (B) aerobic bacteria (C) facultative bacteria (D)




24. A pipe sunk into the well to tap underground water is called




25. Aerosol is




26. All major and important gravity dams are nowadays constructed with




27. A circular sewer section is preferred to because




28. Cowl is provided at




29. The flowing river water in natural drainage gets cleaned by




30. Temporary hardness of water may be removed by




31. Winter rainfall in Tamil Nadu is mainly due to




32. Depletion of ozone layer in the outer atmosphere may causes




33. In sewers the effect of scouring is more on




34. A commonly used handpump is




35. Turbidity is measured on




36. pH value of water indicates




37. The controlling design parameter in the design of all setting tanks is




38. With self cleansing velocity in sewers




39. Permanent hardness of water can be removed by




40. Which one of the following causes cumulative poisoning by water?




41. Meyer's and Rohwer's formula are used to determine.




42. Colorimetric method of testing water is to determine




43. The most common and universal coagulant used in water works is




44. Rainwater of the locality which flows in sewer is called




45. The suitable method of forecasting population for a young and rapidly increasing city is




46. Zero hardness of water is achieved by




47. For trunk and out fall, the type of sewers generally used is




48. For an area developed in haphazard way, the type of layout of water distribution system preferred as




49. Which one of the following is not ground water?




50. Sphere shaped bacteria are called




51. The layer on the top of a filtering medium formed by organic impurities is known as




52. In treatment swimming pool water the filtration system to be used is




53. The sewer which obtains its discharge from two or more sewers is known as




54. The chemical most commonly used to increase speed of sedimentation of sewage is