Steam Boilers, Engines, Nozzles and Turbines
Carbonization of coal is the process of

Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
Pulverizing coal in inert atmosphere
Heating wood in a limited supply of air at temperatures below 300°C
Binding the pulverized coal into briquettes

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Steam Boilers, Engines, Nozzles and Turbines
Pick up the correct statement as regards Cornish boiler and Lancashire boiler

Cornish is water tube and Lancashire is fire tube
Cornish has two fire tubes and Lancashire has one
Cornish is fire tube and Lancashire is water tube
Lancashire has two fire tubes and Cornish has one

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