Question

For the manufacture of Portland cement, the proportions of raw materials used, are:

• A. Lime 63% ; silica 22% ;other ingredients 15%
• B. Lime 22%; silica 63%;other ingredients 15%
• C. Silica 40%; lime 40%;other ingredients 20%
• D. Silica 70% ; lime 20% ;other ingredients 10%

Answer 1

Answer:

A. Lime 63% ; silica 22% ;other ingredients 15%