41. Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt 'using theoretical amount of air in
42. With increase in the time of carbonisation at a particular temperature (say 1000°C), the __________ percentage in coke oven gas increases.
43. Assam coals suffers mainly from the disadvantage of high __________ content.
44. Incomplete combustion of a fuel is characterised by the high __________ in the flue gas.
45. Cannel coal and boghead coal are the examples of
46. The calorific value is the highest out of the following for
47. Which of the following is coking?
48. Safe condition for storage of high V.M. bituminous coal is that
49. A coal having high volatile matter content will
50. Hard coke is manufactured from
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