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

lime 22% ; silica 63% ; other ingredients 15%

lime 63% ; silica 22% ; other ingredients 15%

lime 22% ; silica 63% ; other ingredients 15%

silica 40% ; lime 40% ; other ingredients 20%

silica 70% ; lime 20% ; other ingredients 10%.

For the manufacture of Portland cement, the pr

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%