Ultimate analysis of coal determines its _______________ content?

Fuels and Combustion 10/01/2022

A. Carbon, hydrogen, nitrogen & sulphur
B. Carbon, ash, sulphur & nitrogen
C. Carbon, sulphur, volatile matter & ash
D. Carbon, volatile matter, ash & moisture

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    Pulverised coal used in boiler firing need not have____________________?
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    Ionisation potential applied across the electrodes of electrostatic tar precipitator is around_____________________?
    A. 230 V AC B. 60 KV AC C. 230 V DC D. 60 KV DC...
    Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around ______________ cm/hr?
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    A good quality coal should have ___________________?
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    One kg of carbon for theoretically complete combustion requires ______________ kg of air?
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