Engineering Thermodynamics
The value of the product of molecular weight and the gas characteristic constant for all the gases in S.I. units is

735 J/kmol °K
83.14 J/kmol °K
29.27 J/kmol °K
848 J/kmol °K

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Engineering Thermodynamics
The door of a running refrigerator inside a room was left open. Which of the following statements is correct?

The temperature of the air in room will remain unaffected
The room will be gradually warmed up
The room will be cooled to the temperature inside the refrigerator
The room will be cooled very slightly

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