51. Pitch creosote mixture (PCM) as compared to furnace oil is a better fuel, because its
52. The calorific value of natural gas is about __________ kcal/Nm3.
53. Calorific value of wood gas is about __________ kcal/Nm3.
54. Calorific value of coke even gas produced by low temperature carbonisation of coal is about __________ kcal/Nm3.
55. The calorific value of 'LPG' (50% propane + 50% butane) is about __________ kcal/Nm3.
56. The calorific value of producer gas is around __________ kcal/Nm3.
57. Yield of pitch from distillation of high temperature tar is around __________ percent.
58. Supply of excess air for complete combustion of fuel is necessitated to facilitate
59. In high temperature carbonisation of coal compared to low temperature carbonisation
60. Initial pressure of oxygen introduced into the 'bomb' of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around __________ atm.
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