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Browse complete papersWhat is the primary environmental issue linked to the use of chlorine for water disinfection?
Creation of chloramines
Formation of trihalomethanes
Oxygen depletion
Acidification of water
Correct answer
Creation of chloramines
What is the primary pollutant released by vehicles that contributes to photochemical smog?
Nitrogen oxides
Carbon dioxide
Sulfur dioxide
Ozone
Correct answer
Nitrogen oxides
What is the primary environmental risk associated with hydraulic fracturing (fracking) for natural gas extraction?
Groundwater contamination
Air pollution
Soil erosion
Noise pollution
Correct answer
Groundwater contamination
Alum as a coagulant is found to be most effective when the \(pH\) range of water is:
7 to 8
8 to 9
Correct answer
The presence of which of the following compounds in water is an indicator of pollution from industrial effluents?
Ammonia
Chlorides
Sodium
Potassium
Correct answer
Ammonia
In environmental management, which of the following techniques is used to assess the environmental impact of a proposed project?
Environmental Impact Assessment (EIA)
Risk Assessment
Health Impact Assessment (HIA)
Carbon Footprint Analysis
Correct answer
Environmental Impact Assessment (EIA)
A chemical plant discharges 150,000 \(m^{3}\)/hr of wastewater containing 200 mg/L of sulfur compounds. What is the mass of sulfur compounds discharged per hour?
30,000 kg
40,000 kg
50,000 kg
60,000 kg
Correct answer
30,000 kg
Which of the following methods is used for in-situ remediation of contaminated groundwater?
Air Sparging
Bioremediation
Soil Vapor Extraction
Chemical Oxidation
Correct answer
Air Sparging
In air pollution control, the most efficient scrubber for removing fine particulate matter is:
Venturi Scrubber
Wet Scrubber
Electrostatic Precipitator
Cyclone Separator
Correct answer
Venturi Scrubber
Which of the following is the most effective technique for controlling nitrogen oxide (NOx) emissions from power plants?
Selective Catalytic Reduction (SCR)
Selective Non-Catalytic Reduction (SNCR)
Flue Gas Desulfurization (FGD)
Low-NOx Burners
Correct answer
Selective Catalytic Reduction (SCR)