IET 181 Exam 2 || All Questions Answered Correctly.
What are Noble fuels and why are they used correct answers Oil and natural gas because they are
the most concentrated natural stores of energy
What are Ignoble fuel and why aren't they as common correct answers Coal. Produces twice the
amount of carbon dioxide. Its sulfur content can contribute to acid rain.
Charcoal is a correct answers secondary fuel produced by pyrolysis
Soot is correct answers Most visible part of smoke
Sulfur dioxide is emitted in correct answers the burning of coal
Coke correct answers A cleaner fuel produced by the combustion of coal
10 meters correct answers How many meters of peat will compress down to form one meter of
coal
Upper coal correct answers Hard, black coal
Lower coal correct answers Lignite, brown coal
Main elements of coal correct answers Carbon, hydrogen, oxygen, nitrogen and sulfur
Carbon correct answers Coal is mostly made of
Ash correct answers Any inert material
10 percent ash correct answers The best coals have less than
Specific latent heat of Vaporization correct answers Energy needed to evaporate 1 kg of liquid
Washing it correct answers Sulfur chlorine and ash in coal can be reduced by
Electricity can be generated by burning correct answers Any type of coal
Land subsidence and waste tips correct answers The main adverse environmental effects of deep
mining have been
Reserves correct answers Considerable certainty to EXIST and would be economic to extract
with today's technology and market
Resources correct answers Which is larger: resources or reserves
Known and economic correct answers Reserves are
What are Noble fuels and why are they used correct answers Oil and natural gas because they are
the most concentrated natural stores of energy
What are Ignoble fuel and why aren't they as common correct answers Coal. Produces twice the
amount of carbon dioxide. Its sulfur content can contribute to acid rain.
Charcoal is a correct answers secondary fuel produced by pyrolysis
Soot is correct answers Most visible part of smoke
Sulfur dioxide is emitted in correct answers the burning of coal
Coke correct answers A cleaner fuel produced by the combustion of coal
10 meters correct answers How many meters of peat will compress down to form one meter of
coal
Upper coal correct answers Hard, black coal
Lower coal correct answers Lignite, brown coal
Main elements of coal correct answers Carbon, hydrogen, oxygen, nitrogen and sulfur
Carbon correct answers Coal is mostly made of
Ash correct answers Any inert material
10 percent ash correct answers The best coals have less than
Specific latent heat of Vaporization correct answers Energy needed to evaporate 1 kg of liquid
Washing it correct answers Sulfur chlorine and ash in coal can be reduced by
Electricity can be generated by burning correct answers Any type of coal
Land subsidence and waste tips correct answers The main adverse environmental effects of deep
mining have been
Reserves correct answers Considerable certainty to EXIST and would be economic to extract
with today's technology and market
Resources correct answers Which is larger: resources or reserves
Known and economic correct answers Reserves are
