Engineering Thermodynamics
Mond gas is obtained by

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

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Engineering Thermodynamics
Stirling cycle consists of

Two constant pressure and two isothermal processes
Two constant volume and two isentropic processes
One constant volume, one constant pressure and two isentropic processes
Two constant volume and two isothermal processes

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