0.287 J/kgK
2.87 J/kgK
28.7 J/kgK
287 J/kgK
✅ The correct answer is option D.
Thermodynamics MCQs
The entropy __________ in an irreversible cyclic process.
remains constant
decreases
increases
✅ The correct answer is option C.
Which of the following gas is mostly used in town for street and domestic lighting and heating?
Producer gas
Coal gas
Mond gas
Coke oven gas
✅ The correct answer is option B.
The most probable velocity of the gas molecules is given by
✅ The correct answer is option B.
The compression ratio for petrol engines is
3 to 6
5 to 8
15 to 20
20 to 30
✅ The correct answer is option B.
The value of 1 mm of Hg is equal to
1.333 N/m2
13.33 N/m2
133.3 N/m2
1333 N/m2
✅ The correct answer is option C.
The sum of internal energy (U) and the product of pressure and volume (p.v) is known as
workdone
entropy
enthalpy
none of these
✅ The correct answer is option C.
An isothermal process is governed by
Boyle’s law
Charles’ law
Gay-Lussac law
Avogadro’s law
✅ The correct answer is option A.
A series of operations, which takes place in a certain order and restore the initial conditions at the end, is known as
reversible cycle
irreversible cycle
thermodynamic cycle
none of these
✅ The correct answer is option C.
The efficiency of Stirling cycle is __________ Carnot cycle.
greater than
less than
equal to
✅ The correct answer is option C.