Correct
Incorrect
✅ The correct answer is option A.
Thermodynamics MCQs
When a system changes its state from one equilibrium state to another equilibrium state, then the path of successive states through which the system has passed, is known as
thermodynamic law
thermodynamic process
thermodynamic cycle
none of these
✅ The correct answer is option B.
One kg of carbon requires 8/3 kg of oxygen for its complete combustion and produces 11/3 kg of carbon dioxide gas.
Agree
Disagree
✅ The correct answer is option A.
The free expansion process is __________ non-flow process.
reversible
irreversible
✅ The correct answer is option B.
The efficiency of Ericsson cycle is __________ Carnot cycle.
greater than
less than
equal to
✅ The correct answer is option C.
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)
mR(T2 – T1)
mcv(T2 – T1)
mcp(T2 – T1)
mcp(T2 + T1)
✅ The correct answer is option B.
One reversible heat engine operates between 1600 K and T2 K and another reversible heat engine operates between T2 K and 400 K. If both the engines have the same heat input and output, then temperature T2 is equal to
800K
1000K
1200K
1400K
✅ The correct answer is option A.
According to Kelvin-Planck’s statement, a perpetual motion of the __________ is impossible.
first kind
second kind
✅ The correct answer is option B.
The standard value of atmospheric pressure taken at sea level is
1.013 bar
760 mm of Hg
1013 x 102 N/m2
all of these
✅ The correct answer is option D.