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__________ iron is produced, when molten pig iron is allowed to cool gradually.
Dephosphorisation of molten pig iron is favoured by
Pig iron is produced by blast furnaces in India using mostly the iron ore named
Nodular cast iron is produced by adding ________ to the molten cast iron.
Chilled cast iron has
Chilled iron castings are
The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth's early life and solidified into hard rock's called
The impure iron (pig iron) that is tapped out from blast furnace contains about __________ percent carbon.
If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called
They treated me - I were a chilled