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Spontaneous combustion is a phenomenon in which | |
A. | all the fuel burns instantaneously producing high energy release [Wrong Answer] |
B. | fuel burns with less air [Wrong Answer] |
C. | coal bursts into flame without any external ignition source but by itself due to gradual increase in temperature as a result of heat released by combination of oxygen with coal [Correct Answer] |
D. | explosion in furnace [Wrong Answer] |
E. | none of the above. [Wrong Answer] |