Fuels and Combustion

91.Calorific value of dry wood may be around _________ Kcal/kg.

1. 5
2. 50
3. 500
4. 5000

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92.Calorific value of furnace oil is about _________ Kcal/kg.

1. 10000
2. 15000
3. 5000
4. 20000

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93.Calorific value of gobar gas (containing CH₄ = 60% , H₂ = 10% ; CO₂ = 30%) may be about _________ Kcal/Nm³.

1. 1800
2. 3200
3. 5400
4. 10200

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94.Calorific value of pitch creosote mixture (PCM) i.e., C.T.F.-200 is about

1. 8800 kcal/m³
2. 8800 kcal/kg
3. Same as that of coal middling
4. 25000 kcal/kg

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95.Calorific value of tar is about _________ Kcal/kg.

1. 8800
2. 12000
3. 14000
4. 16000

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96.Calorific value of wood gas is about _________ kcal/Nm³.

1. 1500
2. 3300
3. 5400
4. 8500

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97.Calorific values of both the solid as well as the liquid fuels can be determined by _________ calorimeter.

1. Bomb
2. Boy's
3. Junkers
4. None of these

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98.Cannel coal

1. Is non-coking
2. Has a high volatile matter content and burns with a luminous smoky flame
3. Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named
4. All (A), (B) and (C)

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99.Cannel coal and boghead coal are the examples of

1. Humic coals
2. Liptobiolites
3. Sapropelic coals
4. None of these

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100.Carbon Content by weight in air dried wood may be about _________ percent.

1. 10
2. 25
3. 50
4. 80

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