71. Low temperature oxidation of stored coal results in the
72. Adiabatic flame temperature of a fuel is dependent on the initial temperature of
73. Pure carbon is completely burnt in oxygen. The flue gas analysis is 70% CO2, 20% CO and 10% O2. The percent excess oxygen used is
74. Which of the following is not a product of tar distillation?
75. Steam is intermittently admitted into the fuel bed during the production of producer gas to
76. High rate of heating of coke ovens
77. By-products are __________ recovered in 'Beehive ovens'.
78. Naphthalene is removed from coke oven gas by
79. __________ of the coal is the basis for Seylor's coal classification.
80. Low temperature oxidation of coal during storage does not decrease its
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