BE/B Eng Bachelor of Engineering Environmental Engineering 1

Question 1

What is Biochemical Oxygen Demand (BOD) a measure of?

Accepted Answer

The amount of oxygen microorganisms need to decompose organic matter in water

Answer

The concentration of dissolved oxygen in water

Answer

The total nitrogen content of wastewater

Answer

The pH level of industrial effluent

Question 2

Which water treatment process removes suspended solids by allowing them to settle under gravity?

Accepted Answer

Sedimentation

Answer

Coagulation

Answer

Filtration

Answer

Disinfection

Question 3

What is the primary greenhouse gas produced by human activities contributing to climate change?

Accepted Answer

Carbon dioxide (CO₂)

Answer

Oxygen (O₂)

Answer

Nitrogen (N₂)

Answer

Argon (Ar)

Question 4

In air pollution control, what does a baghouse filter remove from industrial exhaust?

Accepted Answer

Particulate matter (dust and fine particles)

Answer

Sulfur dioxide gas

Answer

Carbon monoxide

Answer

Volatile organic compounds

Question 5

What is the purpose of a landfill liner in solid waste management?

Accepted Answer

To prevent leachate from contaminating underlying soil and groundwater

Answer

To accelerate decomposition of waste

Answer

To capture methane gas for energy recovery

Answer

To reduce the volume of waste

Question 6

What does the term 'eutrophication' describe in aquatic environments?

Accepted Answer

Excessive nutrient enrichment causing algal blooms and oxygen depletion

Answer

The natural aging and infilling of a water body

Answer

Acidification of a lake due to acid rain

Answer

Saltwater intrusion into freshwater bodies