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Engineering Thermodynamics

Engineering Thermodynamics
Which of the following gas has a minimum molecular mass?

Nitrogen
Hydrogen
Oxygen
Methane

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Engineering Thermodynamics
To convert volumetric analysis to gravimetric analysis, the relative volume of each constituent of the flue gases is

Multiplied by its molecular weight
Multiplied by its density
Multiplied by its specific weight
Divided by its molecular weight

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Engineering Thermodynamics
A molecule consisting of one atom is known as

Di-atomic
Poly-atomic
Tri-atomic
Mono-atomic

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Engineering Thermodynamics
General gas equation is

PV=KiRT
PV=mRT
PV = C
PV=nRT

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Engineering Thermodynamics
The heat supplied to the gas at constant volume is (where m = Mass of gas, cv = Specific heat at constant volume, cp = Specific heat at constant pressure, T2 - T1 = Rise in temperature, and R = Gas constant)

mcp (T2 - T1)
mcp (T2 + T1)
mR (T2 - T1)
mcv (T2 - T1)

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Engineering Thermodynamics
In an isothermal process, the internal energy

Remain constant
Decreases
Increases
First increases and then decreases

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