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- Question
Noise level in a quiet private business office is about __________ decibels.
Options- A. 25
- B. 50
- C. 70
- D. 85
- Correct Answer
- 50
- 1. Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?
Options- A. CO
- B. SO2
- C. NOx
- D. CFC (chloro fluoro carbons) Discuss
- 2. Carcinogenic air pollutants cause
Options- A. bone decay
- B. cancer
- C. asphyxiation (suffocation)
- D. anemia Discuss
- 3. A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the
Options- A. global warming
- B. green house
- C. atmospheric effect
- D. ionosphere Discuss
- 4. Reingleman chart is used for the evaluation of __________ pollution.
Options- A. air
- B. water
- C. noise
- D. radioactive Discuss
- 5. Out of the following, TLV of __________ is maximum (about 500 ppm).
Options- A. carbon dioxide
- B. toluene
- C. carbon disulphide
- D. acetaldehyde Discuss
- 6. A masonry structure built below ground level, where biochemical reaction takes place due to anaerobic bacteria is called
Options- A. cesspool
- B. lagoon
- C. skimming mill
- D. septic tank Discuss
- 7. The detrimental effect on organism and water quality with temperature rise of aquatic system is the reduction of __________ of water.
Options- A. dissolved oxygen content
- B. biological oxygen demand
- C. vapor pressure
- D. all (a), (b) and (c) Discuss
- 8. Deaeration of high pressure boiler feed water is done to reduce
Options- A. foaming from boilers.
- B. its dissolved oxygen content.
- C. its silica content.
- D. caustic embrittlement. Discuss
- 9. The common pollutant generated in chlor-alkali industry and battery manufacture is
Options- A. mercury
- B. brine
- C. phosphate
- D. none of these Discuss
- 10. Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage?
Options- A. Smog & ozone
- B. Hydrogen fluoride & nitrogen oxides
- C. Sulphur dioxide & spray of weed killers
- D. Carbon monoxide Discuss
Environmental Engineering problems
Search Results
Correct Answer: CO
Correct Answer: cancer
Correct Answer: green house
Correct Answer: air
Correct Answer: carbon dioxide
Correct Answer: septic tank
Correct Answer: dissolved oxygen content
Correct Answer: its dissolved oxygen content.
Correct Answer: mercury
Correct Answer: Carbon monoxide
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