81. A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon
82. The maximum percentage of CO2 in a flue gas (from a carbonaceous fuel) can be
83. Net calorific value is the gross calorific value less the __________ heat of water in the product of combustion when cooled to 15°C.
84. Improper storage condition results in the weathering of coal and spontaneous combustion, which increases its
85. Higher percentage of ash in coal meant for the production of metallurgical grade coke
86. Coals used for the generation of producer gas should have
87. The optimum percentage of excess air for combustion depends upon the __________ of the fuel.
88. Commercial production of petrol from coal (as practised in a factory at Sasol in South Africa) is done by the __________ of coal.
89. Largest constituent of coke oven gas is
90. A carbonaceous fuel (containing no H2 or hydrocarbons) is burnt and the resulting flue gas contains 21% CO2. It means that
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