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Energy value of coal: Quiz


Question 1: The energy value of coal, or the fuel content, is the amount of potential energy in ________ that can be converted into actual heating ability.
HydroelectricityGrid energy storageWind powerCoal

Question 2: While ________ provides methods of calculating the heating value of a certain amount of a substance, there is a difference between this theoretical value and its application to real coal.
Periodic tableChemistryInorganic chemistryElectrochemistry

Question 3: Materials of different grades will produce differing amounts of heat for a given ________.
MassForceClassical mechanicsGeneral relativity

Question 4: Elemental or ultimate analysis encompasses the quantitative determination of carbon, ________, nitrogen, sulfur and oxygen within the coal.


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