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Q: For the manufacture of Portland cement, the typical proportions of raw materials used, are
  • A. lime 63%; silica 22%; other ingredients
  • B. lime 22%; silica 63%; other ingredients
  • C. silica 40%; lime 40%; other ingredients
  • D. silica 70%; lime 20%; other ingredients
Correct Answer: Option A - See the above explanation.
A. See the above explanation.

Explanations:

See the above explanation.