Mark the wrong statement

Options

A. Wrought iron is prepared by heating cast iron in a reverberatory furnace
B. The impurity present in cast iron are oxidised by air
C. The impurities are oxidised by `Fe_(2)O_(3)`
D. `CO`burns with blue flame and the `Si, Mn` and other impuritites from slag with silica

Answer

B

Explanation

The wrong statement is that the impurities present in cast iron are oxidised by air.