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Engineering Thermodynamics

Engineering Thermodynamics
Which of the following has the minimum atomic mass?

Nitrogen
Carbon
Oxygen
Sulphur

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Engineering Thermodynamics
The reading of the pressure gauge fitted on a vessel is 25 bar. The atmospheric pressure is 1.03 bar and the value of 'g' is 9.81 m/s2. The absolute pressure in the vessel is

23.97 bar
34.81 bar
26.03 bar
25 bar

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Engineering Thermodynamics
The variables which control the physical properties of a perfect gas are

Volume occupied by the gas
Temperature of the gas
All of these
Pressure exerted by the gas

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Engineering Thermodynamics
The property of a working substance which increases or decreases as the heat is supplied or removed in a reversible manner, is known as

Enthalpy
Entropy
External energy
Internal energy

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Engineering Thermodynamics
For which of the following substances, the gas laws can be used with minimum error

Dry steam
Wet steam
Saturated steam
Superheated steam

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Engineering Thermodynamics
The smallest quantity of a substance, which can exist by itself in a chemically recognizable form is known as

Atom
Compound
Molecule
Element

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