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EGEE 101 Exam 2 Review Questions with Correct Answers Oil and Natural Gas typically form in what environment? - ....ANSWER☑️☑️...-marine life preserved at the bottom of deep lakes Hydrocarbons refer to which two elements? - ....ANSWER☑️☑️...-hydrogen and carbon Which of the fossil fuels are regional commodities with regional prices? ....ANSWER☑️☑️...-coal and natural gas Coal is formed in what enviornment? - ....ANSWER☑️☑️...-plants in a humic, swamp environment Which fossil fuel contains ash? - ....ANSWER☑️☑️...-coal How many ranks of coal are there? - ....ANSWER☑️☑️...-four Which coal rank has the highest heating value? - ....ANSWER☑️☑️...-anthracite What two methods are used to mine coal? - ....ANSWER☑️☑️...-deep mining and mountaintop removal A proximate analysis shows that a certain lignite coal is 10% moisture, 30% volatiles, and 10% ash. What is the % fixed carbon? - ....ANSWER☑️☑️...-1 - .10 - .30 - .10 = 0.5 or 50% carbon Which coal rank has the highest percentage of volatiles? - ....ANSWER☑️☑️...lignite FOR STUDY PURPOSES ONLY ©️ 2025 ALL RIGHTS RESERVED 1