Question

8. Lignite has the least heating value.
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Answer 1

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Answer 2

Answer:

Solid fuel types for energy generation

Lignite has the lowest ranking in the coal classification system, and it is mostly used as fuel in the power sector. Lignite's colour ranges from brown to black (see Figure 2.7) and its heating value is less than 19.306 KJ/Kg.

Parent rock type: sedimentary rock, coal

Parent material class: Coal

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