MCQOPTIONS
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| 1. |
The open "Sigrees or coal stoves often require fanning to sustain burning because of |
| A. | tendency of carbon dioxide to form a layer along with dust smoke |
| B. | lack of oxygen in the surroundings of sigrees |
| C. | accumulation of smoke and dust over the sigrees |
| D. | interrupted release of moisture from the material |
| Answer» B. lack of oxygen in the surroundings of sigrees | |