For the manufacture of Portland cement, the proportions of raw materia – McqOptions

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1.	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» B. lime 22% ; silica 63% ; other ingredients 15%

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