Consider the following reaction : Fe 2 O 3 (s) + 2Al(s) → 2Fe(s) + Al

Consider the following reaction :
Fe₂O₃(s) + 2Al(s) → 2Fe(s) + Al₂O₃(s)
Which of the following statements about the given reaction is NOT correct ?

[amp_mcq option1=”It is an example of displacement reaction” option2=”It is highly endothermic reaction” option3=”Fe₂O₃ acts as oxidizing agent” option4=”This reaction is applicable to joining of railway tracks” correct=”option2″]

This question was previously asked in

UPSC NDA-2 – 2023

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The statement that is NOT correct about the given reaction is that it is highly endothermic reaction.

The reaction Fe₂O₃(s) + 2Al(s) → 2Fe(s) + Al₂O₃(s) is known as the thermite reaction. It is a highly exothermic reaction, releasing a large amount of heat. Aluminum is more reactive than iron and displaces iron from its oxide, making it a displacement reaction. Fe₂O₃ is reduced (loses oxygen), so it acts as an oxidizing agent. The large amount of heat produced makes this reaction useful for welding, including joining railway tracks.

The thermite reaction releases so much heat that the iron produced is in a molten state, which is essential for its application in welding. An endothermic reaction absorbs heat from the surroundings, which is the opposite of what happens in the thermite process.

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