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In a thermite process ………….. Is used as ...

In a thermite process ………….. Is used as reducing agent.

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Aluminium
In the thermite process, aluminium is used as a reducing agent. A mixture of concentrated oxide ore and aluminium powder, commonly called thermite, is taken in a steel crucible placed in a bed of sand.
`Cr_(2)O_(3) + 2Al rarr 2Cr + Al_(2)O_(3)`
`3Mn_(3)O_(4) + 8Al rarr Mn + 4Al_(2)O_(3)`.
A large amount of heat energy is released during reduction which fuses both the alumina and the metal. Aluminium acts as a reducing agent and is itself oxidised.
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