40 TOP Fuels and Combustion Online Test – Multiple Choice Questions and Answers

1. “Overfire burning” in a furnace is a phenomenon characterised by the


2. Proximate analysis of coal determines its __________ content


3. The heat of combustion of a fuel


4. With increase in moisture content of coal, its


5. Which of the following petrographic constituents of coal is non-coking ?


6. Abrasion index of blast furnace coke should be around __________ percent


7. __________ has the widest inflammability limit (explosion limit) of all the gases


8. Yield of pitch from distillation of high temperature tar is around __________ percent


9. In flue gas analysis by Orsat’s apparatus, carbon dioxide is absorbed by


10. ‘Fat’ coal means a coal having


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