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1. |
Find the time taken to dry 50% to 40% of moisture (dry basis) if critical moisture content is 30%. If the weight of the wet solid is 5 kg and the product of area and the constant rate is 0.5 kg/min. |
A. | 20 sec |
B. | 40 sec |
C. | 60 sec |
D. | 80 sec |
Answer» D. 80 sec | |