A) Blackheart cast iron

B) White heart cast iron

both A and B

none of these

Pig iron

Malleable iron

Spheroidal graphite cast iron

High carbon steel

is a ductile material

can be easily forged or welded

cannot stand sudden and excessive shocks

all of these

air is burning out silicon and manganese

silicon and manganese has burnt and carbon has started oxidizing

the converter must be tilted to remove the contents of the converter

the brown smoke does not occur during the operation of a Bessemer converter

air is burning out silicon and manganese

silicon and manganese has burnt and carbon has started oxidizing

the converter must be tilted to remove the contents of the converter

red flame does not occur during the operation of bessemer converter