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- Question
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
- Correct Answer
- treating in biological oxygen pond
- 1. 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
- 2. 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
- 3. 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
- 4. Presence of excess flourine in water causes
Options- A. dental cavity
- B. tooth decay
- C. fluorosis
- D. respiratory disease Discuss
- 5. 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
- 6. Which of the following pollutants is not emitted during volcanic eruptions?
Options- A. SO2
- B. H2S
- C. CO
- D. hydrocarbons Discuss
- 7. Exposure to small amount of __________ results in high blood pressure & heart disease in human beings.
Options- A. hydrogen sulphide
- B. mercury
- C. cadmium
- D. asbestos Discuss
- 8. Exposure to chemicals having carcinogenic properties cause
Options- A. dermatitis (skin disorder)
- B. cancer
- C. asphyxiation (suffocation)
- D. asthma Discuss
- 9. Potassic fertiliser is graded based on its __________ content.
Options- A. KCl
- B. K2O
- C. KNO3
- D. K2SO4 Discuss
- 10. Fertiliser value of a nitrogeneous fertiliser is expressed in terms of its __________ content.
Options- A. N2
- B. KNO3
- C. NO2
- D. NHO3 Discuss
Environmental Engineering problems
Search Results
Correct Answer: Idle running
Correct Answer: all (a), (b) & (c).
Correct Answer: acetylene
Correct Answer: fluorosis
Correct Answer: radial settling tank (thickener) using coagulant (lime & ferrous sulphate).
Correct Answer: hydrocarbons
Correct Answer: cadmium
Correct Answer: cancer
Correct Answer: K2O
Correct Answer: N2
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