1.

Which of the processes is used in thermite welding?

Answer»

`TiO_2 + 4NA to TI + 2Na_2O`
`2AL + Fe_(2)O_3 to Al_2O_3 + 2FE
`SnO + 2C to Sn + 2Co`
`Cr_2O_3 + 2Al to Al_2O_3 + 2Cr` 

Answer :D


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