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Types and Characteristics of Fuels Quiz

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Questions and Answers

What are the primary combustible elements in fuels?

Iron, magnesium, aluminum

Nitrogen, sulfur, potassium

Oxygen, nitrogen, phosphorus

Carbon, hydrogen, sulfur (correct)

Which substance is derived from prehistoric plants?

Coal (correct)

Diesel

Wood

Natural gas

What is the average composition of wood used as domestic fuel?

No moisture content

80% moisture after air-drying

50% moisture after air-drying

15% moisture after air-drying (correct)

What is the primary mode of procurement for coal?

<p>Natural</p> Signup and view all the answers

What is the calorific value range for coal?

<p>4000 to 6400 Btu/lb</p> Signup and view all the answers