19:I[231,["231","static/chunks/231-6696bb2c5a5bb274.js","16","static/chunks/app/q/%5BquestionId%5D/page-81ec0c67ccb79a47.js"],""] 18:T757,{"@context":"https://schema.org","@graph":[{"@type":"QAPage","@id":"https://www.chem-mantra.online/q/9e09414920d4460da9d5ca885#page","url":"https://www.chem-mantra.online/q/9e09414920d4460da9d5ca885","name":"The conversion of pig iron to steel frequently requires the addition of :
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(II) transition elements
(III) inner transition elements
(IV) silica","mainEntity":{"@type":"Question","@id":"https://www.chem-mantra.online/q/9e09414920d4460da9d5ca885#question","name":"The conversion of pig iron to steel frequently requires the addition of :
(I) oxygen or iron oxide
(II) transition elements
(III) inner transition elements
(IV) silica","text":"The conversion of pig iron to steel frequently requires the addition of :
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(II) transition elements
(III) inner transition elements
(IV) silica","answerCount":1,"dateCreated":"2026-06-27T05:21:33.003Z","about":{"@type":"Thing","name":"d and f Block Elements"},"acceptedAnswer":{"@type":"Answer","@id":"https://www.chem-mantra.online/q/9e09414920d4460da9d5ca885#answer","text":"Correct answer: B","upvoteCount":10,"dateCreated":"2026-06-27T05:21:33.003Z","author":{"@type":"Person","name":"Prashant Kotian","jobTitle":"PhD Researcher & Chemistry Educator","affiliation":"Chem-Mantra"}}},"breadcrumb":{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://www.chem-mantra.online"},{"@type":"ListItem","position":2,"name":"Questions","item":"https://www.chem-mantra.online/tests"},{"@type":"ListItem","position":3,"name":"d and f Block Elements","item":"https://www.chem-mantra.online/q/9e09414920d4460da9d5ca885"}]}},{"@type":"EducationalOccupationalProgram","name":"JEE Mains Chemistry","provider":{"@type":"EducationalOrganization","name":"Chem-Mantra","url":"https://www.chem-mantra.online"}}]}

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