Pick up the correct statement from the following:

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Question:
 
Pick up the correct statement from the following:

1.In basic Bessemer process, the steel heats the converter

2.In open-hearth process, the furnace heats the steel

3.In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore

4. all the above.

Posted Date:-2021-03-26 06:50:33


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