Which of the following reactions represent the thermite reaction?

3 M n_{3} O_{4} + 8 A l \to 9 M n + 4 A l_{2} O_{3}

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M g C O_{3} + S i O_{2} \to M g S i O_{3} + C O_{2}

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C u_{2} S + 2 C u_{2} O \to 6 C u + S O_{2}

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F e_{2} O_{3} + 3 C O \to 2 F e + 3 C O_{2}

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Solution

The correct option is A $3 M n_{3} O_{4} + 8 A l \to 9 M n + 4 A l_{2} O_{3}$
Thermite reaction (a type of aluminothermic reaction) is a reaction in which aluminium metal is oxidized by an oxide of another metal.

$The reaction is : 3 M n_{3} O_{4} + 8 A l \to 9 M n + 4 A l_{2} O_{3}$

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