Engineering Thermodynamics
Coke is produced

By heating wood with a limited supply of air to a temperature not less than 280°C
When coal is first dried and then crushed to a fine powder by pulverizing machine
From the finely ground coal by moulding under pressure with or without a binding material
When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel

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Engineering Thermodynamics
Zeroth law of thermodynamics

Deals with heat engines
Deals with conversion of mass and energy
States that if two systems are both in equilibrium with a third system, they are in thermal equilibrium with each other
Deals with reversibility and irreversibility of process

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Engineering Thermodynamics
Mond gas is obtained by

Carbonisation of bituminous coal
Partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
Passing steam over incandescent coke
Passing air and a large amount of steam over waste coal at about 650°C

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