High amount of sulphur and phosphorous in coke causes ____________________ ?
Correct answer: C. Brittleness of steel made by using it
- A. Decrease in its calorific value
- B. Increase in its strength
- C. Brittleness of steel made by using it
- D. None of these
Explanation
Sulphur and phosphorus are harmful impurities in coke used for iron and steel production because they make the resulting steel brittle. They do not strengthen the coke in the useful metallurgical sense.
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