The red flame during the operation of a Bessemer converter indicates that the

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

Silica bricks

a mixture of tar and burnt dolomite bricks

either (a) or (b)

none of these

silica bricks

a mixture of tar and burnt dolomite bricks

either (a) or (b)

none of these

Bessemer process

Open hearth process

Duplex process

Electric process

basic Bessemer and acid open hearth processes

acid Bessemer and basic open hearth processes

acid Bessemer and acid open hearth processes

basic Bessemer and basic open hearth processes