MCQOPTIONS
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				| 1. | 
                                    Height of coke oven is limited (say maximum upto 7 metres) mainly by the | 
                            
| A. | problem of uniform heating along its height. | 
| B. | structural strength of silica bricks. | 
| C. | problem in door cleaning. | 
| D. | buckling of ram of pusher car at the time of coke pushing. | 
| Answer» B. structural strength of silica bricks. | |