ACS CP ACS CP Environmental Chemistry & Sustainability

Question 1

Which principle of green chemistry focuses on designing chemical syntheses to use and generate substances with little or no toxicity to human health and the environment?

Accepted Answer

Designing safer chemicals

Answer

Principle 4 of the 12 Principles of Green Chemistry focuses on designing safer chemicals that retain efficacy while minimizing toxicity.

Question 2

The Clean Air Act regulates which of the following as a National Ambient Air Quality Standard (NAAQS) criteria pollutant?

Accepted Answer

Ozone

Answer

Ground-level ozone is one of the six criteria pollutants regulated under NAAQS, along with particulate matter, CO, NO2, SO2, and lead.

Question 3

Biochemical oxygen demand (BOD) is used as a measure of:

Accepted Answer

The amount of organic matter in a water sample

Answer

BOD measures the amount of dissolved oxygen consumed by biological organisms when decomposing organic matter in a water sample at a given temperature.

Question 4

Which heavy metal is commonly associated with methylation by anaerobic bacteria in sediments, leading to bioaccumulation in the food chain?

Accepted Answer

Mercury

Answer

Mercury is methylated by sulfate-reducing bacteria in anaerobic sediments to form methylmercury, which bioaccumulates and biomagnifies in aquatic food chains.

Question 5

The Montreal Protocol primarily addresses the phase-out of substances that deplete:

Accepted Answer

Stratospheric ozone

Answer

The Montreal Protocol is an international treaty designed to phase out the production and use of ozone-depleting substances (ODS) that destroy stratospheric ozone.

(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