Coal is produced after a long time of decay:
Correct answer: C. wood
- A. animals
- B. fossils
- C. wood
- D. all of the above
Explanation
Wood is the primary source material for coal. Decaying woody tissues from ancient forests and swamps undergo the necessary chemical and physical changes to become coal over long periods. Coal is formed from the remains of plant material, mainly trees and other vegetation, that undergo a process called coalification over an extended period of time. The process involves the decomposition and transformation of plant matter under conditions of heat and pressure, eventually forming peat, lignite, bituminous coal, and anthracite
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About Chemistry of Hydrocarbons
Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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