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Fuels and Combustion

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 °K
200 °F
200 °C
200 °R

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Fuels and Combustion
Coke oven gas compared to blast furnace gas is

More explosive and inflammable
All of these
Less poisonous
Lighter

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Fuels and Combustion
A good quality coal should have

High sulphur
High ash content
Low fusion point of ash
None of these

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Fuels and Combustion
Coke oven gas is stripped of its H₂S and mercaptans content by

Bubbling it through dilute sulphuric acid
Absorption in wash oil
Adsorption on silica gel
Adsorption on bog iron bed

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Fuels and Combustion
By-products recovery process from coal carbonisation is termed as direct, indirect and semi direct process depending upon the method of recovery of

Ammonia
Benzol
Tar
None of these

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Fuels and Combustion
The main function of primary air in pulverised coal fired burner is to

Dry and transport the coal
Burn CO to CO₂
Have proper combustion by supplying it around the burner
Preheat the tertiary air used for complete combustion of CO to CO₂

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