Volume of blast furnace slag is about _______________ times the volume of hot metal (pig iron) of the same weight ?
Correct answer: B. 3
- A. 1.5
- B. 3
- C. 5
- D. 7
Explanation
For equal mass, blast-furnace slag occupies roughly three times the volume of hot metal because slag has a much lower density. Hence the approximate volume ratio is 3:1.
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