1.

Which of the following reaction(s) is/are involved in thermit process ?

Answer»

`3Mn_(3)O_(4) +8Al RARR +9Mn+4Al_(2)O_(3)`
`Cr_(2)O_(3) + 2Alrarr2Cr + Al_(2)O_3`
`Fe_(2)O_(3) + 2Alrarr2Fe + Al_(2)O_3`
`B_(2)O_(3) +2Al rarr2B+Al_(2)O_3`

SOLUTION :Al is GOOD reducing agent and is used to re DUCE oxides of metals Eg: Cr, Mn, Fe oxides


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