Which of the following process involves smelting ?

Options

A. `Al_(2)O_(3) * 2H_(2)O overset(Delta)to Al_(2)O_(3)+2H_(2)O`
B. `Fe_(2)O_(3) +3C overset(Delta)to 2Fe+ 3CO `
C. `ZnCO_(3) overset(Delta)to ZnO+CO_2`
D. `2PbS+3O_(2) overset(Delta)to2PbO+2SO_(2)`

Answer

B

Explanation

When concentrated ore is mixed with coke and flux it is heated in the presence of air at high temperature , impurities get removed.
This proces is called smelting . Actually , it is a reduction process, in which oxide is reduced to metal . Therefore , following process will involve smelting .
`Fe_(2)O_(3) +3C overset(Delta)to 2Fe+3CO `