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Chapter 7 BLAST FURNACE MCQs

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1. . The flux used in blast furnace while melting iron ore is:
e) Bauxite





2. . For each ton of pig iron produced in a blast furnace, the amount of ore used is approximately:
e) 12.5 tons





3. . For each ton of pig iron produced from blast furnace, the limestone used is approximately:
e) 2.55 tons





4. . For each ton of pig iron produced in blast furnace, the quantity of coke required would be roughly:
e) 1.9 ton





5. . Which of the following is by-product from blast furnace?
e) None of the above





6. . The maximum temperature inside a blast furnace is of the order of:
e) 3600°C





7. . Percentage of iron in pig iron approximately:
e) 78%





8. . Which of the following is easiest to bend?
e) Wrought iron





9. . Which of the following gives granular fracture?
e) None of the above





10. . Dilute nitric acid applied to a clean fracture of wrought iron gives:
e) Black stain





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