ACS CP ACS CP Environmental Chemistry & Sustainability 2

Question 1

The EPA's Superfund program (CERCLA) is primarily used to:

Accepted Answer

Clean up contaminated hazardous waste sites

Answer

CERCLA (Comprehensive Environmental Response, Compensation, and Liability Act) established the Superfund program to clean up uncontrolled or abandoned hazardous waste sites.

Question 2

Which type of water treatment process uses microorganisms to break down organic contaminants?

Accepted Answer

Activated sludge process

Answer

The activated sludge process is a biological treatment method using aerobic microorganisms to decompose dissolved organic matter in wastewater.

Question 3

Which greenhouse gas has the highest global warming potential (GWP) over a 100-year time horizon among common industrial gases?

Accepted Answer

Sulfur hexafluoride (SF6)

Answer

SF6 has a GWP of approximately 23,500 over 100 years, making it the most potent greenhouse gas regulated under the Kyoto Protocol.

Question 4

The principle of 'E-factor' in green chemistry measures:

Accepted Answer

The ratio of waste generated to product formed (kg waste/kg product)

Answer

The E-factor (environmental factor) is the ratio of kilograms of waste produced per kilogram of desired product, with lower values indicating greener processes.

Question 5

Volatile organic compounds (VOCs) are regulated as air pollutants primarily because they contribute to formation of:

Accepted Answer

Ground-level ozone and photochemical smog

Answer

VOCs react with nitrogen oxides in the presence of sunlight to form ground-level ozone and photochemical smog, which are harmful air pollutants.

(ACS CP) American Chemical Society (ACS) Certified Professional Practice Test

(ACS CP) American Chemical Society (ACS) Certified Professional Practice Test

ACS CP ACS CP Environmental Chemistry & Sustainability 2