Engineering Thermodynamics
When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel, the process is known as __________ of fuel.

Combustion
None of these
Atomization
Carbonization

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Engineering Thermodynamics
According to First law of thermodynamics,

Internal energy, enthalpy and entropy during a process remain constant
Work-done by a system is equal to the heat transferred by the system
Total energy of a system remains constant
Total internal energy of a system during a process remains constant

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