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Fuels and Combustion

Fuels and Combustion
Critical Air Blast (CAB) value of coke is a direct measure of its

Hardness
Strength
Reactivity
None of these

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Fuels and Combustion
Calorific value of bituminous coal may be around __________ Kcal/kg.

20000
500
6500
1500

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Fuels and Combustion
Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis.

950
500
750
1100

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Fuels and Combustion
In flue gas analysis by Orsat's apparatus, carbon dioxide is absorbed by

Cuporus chloride
Alkaline pyragllol solution
Dilute potassium carbonate
Potassium hydroxide

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Fuels and Combustion
Percentage of methane in coke oven gas may be around

25
5
15
50

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Fuels and Combustion
Optimum preheating temperature for pitch creosote mixture (PCM) which is also termed as C.T.F-200, before atomisation through burners is

200 °R
200 °F
200 °K
200 °C

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