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- Question
Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of
Options- A. CO2
- B. SO2
- C. hydrocarbons
- D. CFC (chloro fluoro carbon)
- Correct Answer
- CFC (chloro fluoro carbon)
- 1. Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is
Options- A. neutralised by alkali treatment.
- B. left as such without any treatment.
- C. diluted with fresh water to reduce its acidity.
- D. none of these. Discuss
- 2. The Killer gas which caused Bhopal gas tragedy in 1984 was
Options- A. phosgene
- B. methyl iso-cynate (MIC)
- C. carbon monoxide
- D. sulphur dioxide Discuss
- 3. In water treatment plant, zeolite process is used to remove the __________ of water.
Options- A. acidity
- B. alkalinity
- C. hardness
- D. iron & zinc Discuss
- 4. As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ ?g/m3.(?g-microgram)
Options- A. 10
- B. 90
- C. 800
- D. 750 Discuss
- 5. Pick out the wrong statement
Options- A. Low ozone layer thickness in polar regions is due to cold climatic conditions
- B. Amount of unburnt hydrocarbons emitted by two stroke petrol engine is more as compared to that emitted by a four stroke engine.
- C. Carbon monoxide present in the two stroke petrol engine exhaust is much less as compared to that emitted from a four stroke engine.
- D. Mercury as a pollutant can enter the blood stream & the digestive system/ lungs and is responsible for causing minamate disease. Discuss
- 6. Ethanolamine is an absorbant used for the removal of __________ from air/gas.
Options- A. HF
- B. SO2
- C. H2S
- D. both (b) & (c) Discuss
- 7. The lowest layer of atmosphere is known as the
Options- A. stratosphere
- B. troposphere
- C. ionosphere
- D. none of these Discuss
- 8. The progressive warming up of the earth's surface is mainly due to the
Options- A. automobile exhaust.
- B. blanketing effect of CO2 in the atmosphere.
- C. de-forestation.
- D. thickening of ozone layer. Discuss
- 9. Color test of water is done with an instrument called
Options- A. tintometer
- B. colorimeter
- C. electro-chemical cell
- D. turbidimeter Discuss
- 10. Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)?
Options- A. Benzopyrene
- B. Peroxyacyl nitrate
- C. Carbon monoxide
- D. Sulphur dioxide Discuss
Environmental Engineering problems
Search Results
Correct Answer: neutralised by alkali treatment.
Correct Answer: methyl iso-cynate (MIC)
Correct Answer: hardness
Correct Answer: 90
Correct Answer: Carbon monoxide present in the two stroke petrol engine exhaust is much less as compared to that emitted from a four stroke engine.
Correct Answer: both (b) & (c)
Correct Answer: troposphere
Correct Answer: blanketing effect of CO2 in the atmosphere.
Correct Answer: tintometer
Correct Answer: Carbon monoxide
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