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

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

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Fuels and Combustion
Which of the following would require least amount of secondary air for combustion?

Anthracite containing 10% volatile matter and 8% ash
Semi-bituminous coal containing 25% ash and 20% volatile matter
Coke breeze containing 25% ash and 2% volatile matter
Bituminous coal containing 20% ash and 25% volatile matter

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