Environmental Engineering (Practice Test MCQs)

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1. The main objective of environmental engineering is:





2. The main sources of water pollution are:





3. BOD stands for:





4. COD represents:





5. Which gas is primarily responsible for the greenhouse effect?





6. The pH value of pure water at 25°C is:





7. The permissible limit of BOD for discharge of wastewater into surface water is:





8. Eutrophication in water bodies is caused by:





9. Which is the most commonly used disinfectant in water treatment?





10. The process of adding air to water to remove dissolved gases is called:





11. The standard method for measuring turbidity is:





12. Which type of solid waste includes household garbage?





13. The most suitable method for disposal of municipal solid waste in urban areas is:





14. The major pollutant emitted by automobiles is:





15. Ozone layer depletion is mainly caused by:





16. The permissible noise level in residential areas during daytime is approximately:





17. The primary purpose of grit chambers in wastewater treatment is to:





18. Activated sludge process is used for:





19. Septic tanks are mainly used for:





20. The most effective method for removing hardness from water is:





21. The term “smog” is derived from:





22. The World Environment Day is celebrated on:





23. Which type of pollution is caused by excessive use of fertilizers?





24. The main objective of wastewater treatment is to:





25. The term “DO” in water analysis stands for:





26. Fluoridation of water is done to:





27. The main cause of acid rain is:





28. The typical pH of acid rain is:





29. The unit of measurement for noise is:





30. Which is a non-renewable energy source?





31. The term “biodegradable waste” refers to:





32. Composting is a method of:





33. Leachate is associated with:





34. The slow sand filter works on the principle of:





35. The most common method for measuring air pollution is:





36. Thermal pollution is caused by:





37. The ideal range of pH for drinking water is:





38. Incineration is best suited for:





39. The main gas produced in a biogas plant is:





40. The process of removing suspended particles by settling is known as:





41. The major cause of global warming is:





42. Green building concept aims to:





43. The World Water Day is observed on:





44. The best method for disinfection of drinking water in rural areas is:





45. Sludge digestion is carried out by:





46. Which is an example of a renewable energy source?





47. The major component of photochemical smog is:





48. Which of the following is a secondary pollutant?





49. The main purpose of sedimentation tanks is:





50. Environmental Impact Assessment (EIA) is conducted to:





1. Basic/Foundation Subjects

2. Core Civil Engineering Subjects

3. Advanced/Applied Subjects

4. Management and Planning

5. Environmental & Sustainable Development