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1. Combustion of a substance is a/an a: reduction reactionsb: oxidation reactionc: displacement reactiond: decomposition reaction |
Answer» <html><body><a href="https://interviewquestions.tuteehub.com/tag/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a> option isA1All <a href="https://interviewquestions.tuteehub.com/tag/combustion-13975" style="font-weight:bold;" target="_blank" title="Click to know more about COMBUSTION">COMBUSTION</a> reactions are <a href="https://interviewquestions.tuteehub.com/tag/oxidation-588780" style="font-weight:bold;" target="_blank" title="Click to know more about OXIDATION">OXIDATION</a>-reduction reactions.For example, the combustion of oxygen is given by the following reaction:C+O <a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a> →CO 2 The oxidation number of elemental C and oxygen are 0 each.The oxidation number of C in CO 2 is +4 and the oxidation number of O in CO 2 is -2.Thus, C is oxidized and O is reduced.Hence, the combustion reaction is oxidation-reduction reaction.</body></html> | |