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% | |