1. Which elements percentage in steel can be found out by Rolla’s apparatus ?
a.Nitrogen and sulphur
b. Carbon and sulphur
c. Iron and carbon.
d.Oxygen and carbon
Answers
Answered by
2
Answer:
the answer is carbon and sulphur
Answered by
2
Answer:
carbon and sulphur
Explanation:
it is the coreect answer of rolla appratus
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