Engineering Thermodynamics
Carbonization of coal consists of

None of these
Drying and crushing the coal to a fine powder
Heating the wood with a limited supply of air to temperature not less than 280°C
Moulding the finely ground coal under pressure with or without a binding material

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Engineering Thermodynamics
Gases have

Only one value of specific heat
Two values of specific heat
No value of specific heat
Under some conditions one value and sometimes two values of specific heat

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