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Q. |
If the boiler chimney emission consists of dense white smoke, then it can be concluded that |
A. | Coal contains high percentage of sulphur |
B. | Insufficient air has been supplied for combustion |
C. | Chemically correct air has been supplied for combustion |
D. | Excess air has been supplied for combustion |
E. | Coal contains high percentage of ash |
Answer» B. Insufficient air has been supplied for combustion |
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