MCQOPTIONS
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| 1. |
Smoke is produced due to |
| A. | insufficient supply of combustion air and insufficient time for combustion. |
| B. | poor quality of fuel and improper mixing of fuel & combustion air. |
| C. | poor design & overloading of furnace. |
| D. | all (a), (b) and (c). |
| Answer» E. | |