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To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between. | |
A. | 1100° and 1200°C [Wrong Answer] |
B. | 1200° and 1300°C [Wrong Answer] |
C. | 1300° and 1400°C [Wrong Answer] |
D. | 1400° and 1500°C [Correct Answer] |