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IET 181 Exam 2 || All Questions Answered Correctly.
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  • IET 181

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 ...

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  • August 4, 2024
  • 4
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • what are noble fuels and why are they used

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  • IET 181
  • IET 181

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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

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