251. The value of universal gas constant is same for all gases.
Yes
No
✅ The correct answer is option A.
Thermodynamics MCQs
252. The heat and work are mutually convertible. This statement is called __________ law of thermodynamics.
Zeroth
First
Second
✅ The correct answer is option B.
253. According to kinetic theory of gases, the kinetic energy of translation of a molecule is proportional to
T
T
1/T
1/T
✅ The correct answer is option A.
254. The calorific value of gaseous fuel is expressed in
kJ
kJ/kg
kJ/m2
kJ/m3
✅ The correct answer is option D.
255. When wood is heated with a limited supply of air to a temperature not less than 280°C, the resulting fuel is
coke
wood charcoal
bituminous coal
briquetted coal
✅ The correct answer is option B.
256. The entropy may be expressed as a function of
pressure and temperature
temperature and volume
heat and work
all of these
✅ The correct answer is option A.
257. The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature, and R = Gas constant)
pv = mRT
pv = RTm
pvm = C
pv = (RT)m
✅ The correct answer is option A.
259. Which of the following is the correct statement?
For a given compression ratio, both Otto and Diesel cycles have the same efficiency.
For a given compression ratio, Otto cycle is more efficient than Diesel cycle.
For a given compression ratio, Diesel cycle is more efficient than Otto cycle.
The efficiency of Otto
✅ The correct answer is option B.
260. The kinetic energy of molecules of a gas becomes zero at absolute zero temperature.
Agree
Disagree
✅ The correct answer is option A.