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Fuels and Combustion

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

5400
1800
10200
3200

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

Same as that of coal middling
25000 kcal/kg
8800 kcal/kg
8800 kcal/m³

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Fuels and Combustion
Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than __________ °C is liable to form clinker.

1250
1400
1100
1350

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Fuels and Combustion
The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to

Minimise its corrosion
None of these
Make it look attractive
Avoid radiation heat loss

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Fuels and Combustion
Calorific value of coke oven gas is around __________ Kcal/Nm³.

900
7500
4200
2000

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Fuels and Combustion
The sequence of absorption in flue gas analysis by Orsat's apparatus is respectively

CO, O₂, CO₂
CO₂, CO, O₂
O₂, CO₂, CO
CO₂, O₂, CO

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