Discussion
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- Question
Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes
Options- A. poor visibility due to sky darkening.
- B. irritation in eyes.
- C. respiratory trouble.
- D. all (a), (b) and (c).
- Correct Answer
- all (a), (b) and (c).
- 1. Which of the following is a secondary air pollutant?
Options- A. Photochemical smog
- B. Sulphur dioxide
- C. Nitrogen dioxide
- D. Dust particles Discuss
- 2. Fresh domestic sewage is __________ in color.
Options- A. grey
- B. dark brown
- C. red
- D. black Discuss
- 3. There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth's surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about __________ °C/km.
Options- A. 0.05
- B. 1
- C. 6.5
- D. 15 Discuss
- 4. Removal of __________ results from the disinfection of water.
Options- A. turbidity
- B. odour
- C. hardness
- D. bacteria Discuss
- 5. Brown spots in fabrics will be caused by washing with water containing large amount of .
Options- A. iron
- B. zinc
- C. iodine
- D. bromine Discuss
- 6. In sewage treatment, its sedimentation is speeded up by commonly adding
Options- A. hydrochloric acid.
- B. lime.
- C. copper sulphate.
- D. sodium sulphate. Discuss
- 7. Presence of __________ bacteria in water causes disease like typhoid.
Options- A. aerobic
- B. pathogenic
- C. anaerobic
- D. non-pathogenic Discuss
- 8. Which of the following is a manmade source of air pollution?
Options- A. Automobile exhaust.
- B. Forest fire.
- C. Bacterial action in soil and swamp areas
- D. All (a), (b) and (c). Discuss
- 9. TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes
Options- A. skin disorder
- B. bronchitis
- C. bone disease
- D. cancer Discuss
- 10. Which of the following sources is responsible for maximum air pollution?
Options- A. Industrial chimney exhaust.
- B. Forest fire.
- C. Automobiles exhaust.
- D. Photochemical oxidation of organic matter. Discuss
Environmental Engineering problems
Search Results
Correct Answer: Photochemical smog
Correct Answer: grey
Correct Answer: 6.5
Correct Answer: bacteria
Correct Answer: iron
Correct Answer: lime.
Correct Answer: pathogenic
Correct Answer: Automobile exhaust.
Correct Answer: bronchitis
Correct Answer: Automobiles exhaust.
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