Discussion
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- Question
Dissolved oxygen content in river water is around __________ ppm.
Options- A. 5
- B. 100
- C. 250
- D. 500
- Correct Answer
- 5
- 1. Water effluent generated in printing industry is decolourised by
Options- A. ion exchange technique.
- B. reverse osmosis.
- C. electrolytic decomposition.
- D. adsorption. Discuss
- 2. Main pollutant present in automobile exhaust is
Options- A. CO
- B. CO2
- C. NO
- D. hydrocarbons Discuss
- 3. Presence of __________ in water stream are deleterious to aquatic life.
Options- A. soluble and toxic organics.
- B. suspended solids.
- C. heavy metals and cynides.
- D. all (a), (b) & (c). Discuss
- 4. Presence of volatile compounds like gasoline, oil, alcohol, ether etc. in municipal sewers may cause
Options- A. explosion
- B. non biodegradable foam
- C. undesirable plant growth
- D. corrosion Discuss
- 5. Exposure to chemicals having carcinogenic properties cause
Options- A. dermatitis (skin disorder)
- B. cancer
- C. asphyxiation
- D. asthma Discuss
- 6. World's worst radioactive pollution was caused by nuclear reactor disaster which occured in
Options- A. Arizona (U.S.A.)
- B. Chernobyl (undivided U.S.S.R.)
- C. Pensylvania (U.S.A.)
- D. Moscow (U.S.S.R.) Discuss
- 7. Industrial workers working in leather tanning & manufacturing units are prone to suffer from
Options- A. respirtory ailments (e.g. bronchitis).
- B. skin diseases (e.g. dermatities).
- C. silicosis.
- D. blurred vision. Discuss
- 8. Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about __________ decibels.
Options- A. 20
- B. 60
- C. 90
- D. 120 Discuss
- 9. Noise level heard inside a bus in busy city traffic or inside a sub-way train corresponds to about __________ decibels.
Options- A. 75
- B. 95
- C. 120
- D. 140 Discuss
- 10. Nitrogen oxides (NOx) is not produced in the __________ industry.
Options- A. nitric acid making
- B. nitrogenous fertiliser
- C. detergent
- D. any of these Discuss
Environmental Engineering problems
Search Results
Correct Answer: electrolytic decomposition.
Correct Answer: CO
Correct Answer: all (a), (b) & (c).
Correct Answer: explosion
Correct Answer: cancer
Correct Answer: Chernobyl (undivided U.S.S.R.)
Correct Answer: skin diseases (e.g. dermatities).
Correct Answer: 90
Correct Answer: 95
Correct Answer: detergent
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