MCQOPTIONS
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				| 1. | 
                                    The developments in the field of concrete mix design gave compressive strength ranging between ___________ | 
                            
| A. | 30-70 | 
| B. | 70-100 | 
| C. | 35-45 | 
| D. | 30-80 | 
| Answer» C. 35-45 | |