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- Question
Presence of excess flourine in water causes
Options- A. dental cavity
- B. tooth decay
- C. fluorosis
- D. respiratory disease
- Correct Answer
- fluorosis
- 1. Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by
Options- A. biological oxygen pond.
- B. radial settling tank (thickener) using coagulant (lime & ferrous sulphate).
- C. lagoons.
- D. filtration. Discuss
- 2. Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre)?
Options- A. Lagooning
- B. Activated carbon adsorption
- C. Biological oxidation pond
- D. Chemical coagulation Discuss
- 3. Siderosis is a disease caused by the inhalation of __________ dust.
Options- A. coal
- B. silica
- C. iron
- D. none of these Discuss
- 4. Which of the following dust collection equipments is the least efficient (for sub-micronic particles)?
Options- A. Dust catcher (gravity type)
- B. Cyclone separator
- C. Bag filter
- D. Hollow wet scrubber Discuss
- 5. Main pollutants released from iron & steel industry is
Options- A. CO, CO2 & SO2.
- B. H2S, NO & SO3.
- C. CO2, H2S & NO2.
- D. SO3, NO2 & CO2. Discuss
- 6. The widest explosive limit is of __________ , thereby making it the most explosive gas.
Options- A. acetylene
- B. petrol vapor
- C. hydrogen
- D. carbon monoxide Discuss
- 7. Inhalation of lead compounds present in automobile exhaust (using leaded petrol) causes
Options- A. blood poisoning.
- B. anaemia.
- C. nervous system disorder.
- D. all (a), (b) & (c). Discuss
- 8. During which of the following operating conditions of an automobile, carbon monoxide content in the exhaust gas is maximum?
Options- A. Idle running
- B. Acceleration
- C. Cruising
- D. Deaccelaration Discuss
- 9. Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by
Options- A. chlorination
- B. treating in biological oxygen pond
- C. chemical coagulation
- D. none of these Discuss
- 10. Which of the following pollutants is not emitted during volcanic eruptions?
Options- A. SO2
- B. H2S
- C. CO
- D. hydrocarbons Discuss
Environmental Engineering problems
Search Results
Correct Answer: radial settling tank (thickener) using coagulant (lime & ferrous sulphate).
Correct Answer: Activated carbon adsorption
Correct Answer: iron
Correct Answer: Dust catcher (gravity type)
Correct Answer: CO, CO2 & SO2.
Correct Answer: acetylene
Correct Answer: all (a), (b) & (c).
Correct Answer: Idle running
Correct Answer: treating in biological oxygen pond
Correct Answer: hydrocarbons
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