Statement 1: The reaction of iron(III) oxide ${F e}_{2} O_{3}$ with aluminium is used to join railway tracks or cracked machine parts.
Statement 2: Some of the displacement reactions are highly exothermic reactions.

Statement 1 is true, but statement 2 is false.

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Statement 1 is false but statement 2 is true.

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Statement 1 and 2 both are true but 2 is not the correct explanation of 1.

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Statement 1 and 2 both are true and 2 is the correct explanation of 1.

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Solution

The correct option is D
Statement 1 and 2 both are true and 2 is the correct explanation of 1.

${F e}_{2} O$ + $2 A l (s)$ → $2 F e (l)$ + ${A l}_{2} O_{3} (s)$ + $H e a t$
In this reaction aluminium is displacing iron from iron oxide. This displacement reaction is accompanied by evolution of large amount of heat which is utilised in melting the displaced iron. This molten iron is used to join railway tracks or cracked machine parts.

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