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Q61 (NDA-II/2023) Science & Technology › Basic Science (Physics, Chemistry, Biology) Official Key

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

Explanation

The given chemical equation represents the Thermite reaction. Statement B is incorrect because this reaction is highly exothermic, not endothermic. The heat released is so intense that the iron produced is in a molten state.

  • Displacement Reaction: Aluminum is more reactive than iron and displaces it from its oxide, making Statement A correct.
  • Oxidizing Agent: Fe2O3 provides oxygen for the oxidation of aluminum and is itself reduced to iron; therefore, it acts as an oxidizing agent, making Statement C correct.
  • Application: Due to the production of molten iron, this reaction is widely used for welding railway tracks and repairing cracked machine parts, making Statement D correct.

Since the question asks for the statement that is NOT correct, Option B is the correct answer.

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