Alkanes are used as fuels. We burn them for many reasons. Which of the following is not its use?
Correct answer: D. They are used to provide electricity for galvanic cell
- A. They are used to generate electricity in power stations
- B. They are used to heat our homes and cook our food
- C. For manufacturing a fertilizer
- D. They are used to provide electricity for galvanic cell
Explanation
Option D is correct. A Galvanic cell does not use energy released from the combustion of alkanes. In galvanic cells (such as batteries), chemical reactions involving oxidation and reduction occur spontaneously to generate electrical energy. Options A, B, and C are incorrect because alkanes are indeed used for generating electricity in power stations, heating homes and cooking food, and manufacturing fertilizers respectively.
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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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