Mechanical Engineering MCQs

Page No. 101

Gases have___________________?


aonly one value of specific heat

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btwo values of specific heat

✓


cthree values of specific heat

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dno value of specific heat

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Extensive property of a system is one whose value______________________?


adepends on the mass of the system like volume

✓


bdoes not depend on the mass of the system, like temperature, pressure, etc.

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cis not dependent on the path followed but on the state

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dis dependent on the path followed and not on the state

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The statement that molecular weights of all gases occupy the same volume is known as________________?


aAvogadro’s hypothesis

✓


bDalton’s law

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cGas law

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dLaw of thermodynamics

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If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to__________________?


a+ v

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b– ve

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czero

✓


dpressure x volume

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View Answer zeropressure x volume

Properties of substances like pressure, temperature and density, in thermodynamic coordinates are__________________?


apath functions

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bpoint functions

✓


ccyclic functions

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dreal functions

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View Answer point functions

According to Avogadro’s law, for a given pressure and temperature, each molecule of a gas_________________?


aoccupies volume proportional to its molecular weight

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boccupies volume proportional to its specific weight

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coccupies volume inversely proportional to its molecular weight

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doccupies same volume

✓


View Answer occupies same volume

Which of the following is the property of a system___________________?


apressure and temperature

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binternal energy

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cvolume and density

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dall of the above

✓


View Answer all of the above

Which of the following is not the intensive property___________________?


apressure

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btemperature

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cdensity

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dheat

✓


View Answer heat

Work done in an adiabatic process between a given pair of end states depends on__________________?


athe end states only

✓


bparticular adiabatic process

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cthe value of index n

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dthe value of heattransferred

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View Answer the end states only

Which of the following parameters is constant for a mole for most of the gases at a given temperature and pressure___________________?


aenthalpy

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bvolume

✓


cmass

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dentropy

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View Answer volume

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