ENGR 202 FINAL REVIEW EXAM QUESTIONS AND ANSWERS | UPDATED 2026 | GRADED A+

ENGR 202 FINAL REVIEW EXAM QUESTIONS AND ANSWERS | UPDATED 2026 | GRADED A+ Role of engineering in relationship with the environmental stewardship concept - answer-Engineers are involved in making decisions related to technology development and its deployment. They are part of a product's design, raw material acquisition, etc., therefore they must know the environmental impacts of their choices. Name two major contaminants for ground waters and their sources? - answer-1. Petroleum compounds (organic chemicals) - leaking from underground storage tanks 2. Nitrates from agriculture fertilizers Name 3 activities that impact air quality - answer-1. Diesel combustion (PM) 2. Oil and coal combustion (SO2) 3. Fossil fuel combustion (complete and incomplete, CO2 and CO respectively) Name 3 activities that impact soil quality - answer-1. Solid waste (paper and paperboard) 2. Hazardous waste (wastewater treatment) 3. Radioactive waste (uranium mining) Difference between primary and secondary water quality standards? - answer-Primary (human health): designed to protect public health Secondary (human welfare): non-enforceable guidelines related to public welfare criteria Difference between smoke and smog? - answer-Smoke is produced by something burning, whereas smog is a mixture of fog and smoke and is produced from the reaction between sunlight and carbon emitted gases in the atmosphereWhat are the 4 characteristics of hazardous wastes? - answer--Ignitability: ability to burn -Corrosivity: ability to corrode metals -Reactivity: ability to react violently with other substances, even with water -Toxicity: ability to threaten human health and welfare Wavelength of IR and UV radiation - answer-UV: below 3e-6 m IR: above 3e-6 m Average production of solid wastes per capity/perday? - answer-100kg/person/day EPA - answer-Environmental Protection Agency PM - answer-Particulate Matter NAAQS - answer-National Ambient Air Quality Standards IPCC - answer-International Panel on Climate Change T_e - answer-Earth's tempterature What test is used to evaluate toxicity? - answer-TCLP (Toxicity Characteristic Leaching Procedure) If a chemical reaches a certain threshold, then it is toxic Lov level radiation wastes? - answer-Low level of radioactivity across large volumes of materials VOCs - answer-Volatile Organic Compounds