Engineering Thermodynamics
The mass of excess air supplied is equal to

(100/23) × Mass of excess oxygen
(23/100) × Mass of excess oxygen
(23/100) × Mass of excess carbon
(100/23) × Mass of excess carbon

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Engineering Thermodynamics
The universal gas constant (or molar constant) of a gas is the product of

Atomic mass of the gas and the gas constant
Molecular mass of the gas and the specific heat at constant volume
Molecular mass of the gas and the gas constant
Molecular mass of the gas and the specific heat at constant pressure

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

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
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

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