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Fuels and Combustion

Fuels and Combustion
Calorific value of both the solid & liquid fuels can be determined by using __________ calorimeter.

Boy's
None of these
Bomb
Junker's

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Fuels and Combustion
For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³ ), while the C.V. is same on weight basis (i.e., kcal/kg) ?

Propane and LPG
F. gas and coke oven gas
Sewage gas and gobar gas
Propane and acetylene

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Fuels and Combustion
Coals used for the generation of producer gas should have

High caking index
Very low ash content (8-10%)
Low fusion point of ash
High volatile matter content

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Fuels and Combustion
Which of the following has the highest heat of combustion?

C₂H₆
CH₄
H₂
CO

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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
8800 kcal/kg
8800 kcal/m³
25000 kcal/kg

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Fuels and Combustion
Pulverised coal used in boiler firing need not have

Lower ash content
Less moisture content
High bulk density
High fusion point of its ash

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