Engineering Thermodynamics
Universal gas constant is defined as equal to product of the molecular weight of the gas and

Gas constant
Ratio of two specific heats
Specific heat at constant pressure
Specific heat at constant volume

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Engineering Thermodynamics
According to Kelvin-Planck’s statement of second law of thermodynamics,

It is possible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work
It is impossible to construct a device which operates in a cyclic process and produces no effect other than the transfer of heat from a cold body to a hot body
It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work
None of these

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