p v = constant, if T is kept constant
v/T = constant, if p is kept constant
p/T = constant, if v is kept constant
T/p = constant, if v i
✅ The correct answer is option A.
Thermodynamics MCQs
One molecule of oxygen is __________ times heavier than the hydrogen atom.
12
14
16
32
✅ The correct answer is option D.
When the gas is heated at constant pressure, the heat supplied
increases the internal energy of the gas
increases the temperature of the gas
does some external work during expansion
Both (B) and (C)
✅ The correct answer is option D.
The efficiency of Carnot cycle depends upon
temperature limits
pressure ratio
volume compression ratio
cut-off ratio and comp
✅ The correct answer is option A.
For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order
Dual cycle, Diesel cycle, Otto cycle
Otto cycle, Diesel cycle, Dual cycle
Dual cycle, Otto cycle, Diesel cycle
Diesel cycle, Otto cyc
✅ The correct answer is option A.
The change of entropy, when heat is removed from the gas, is positive.
Yes
No
✅ The correct answer is option B.
Liquid fuels have higher calorific value than solid fuels.
Yes
No
✅ The correct answer is option A.
The amount of heat required to raise the temperature of 1 kg of water through one Kelvin is called
specific heat at constant volume
specific heat at constant pressure
kilo-Joule
none of these
✅ The correct answer is option C.
When gas is heated at constant pressure, the heat supplied is utilised in
increasing the internal energy of gas
doing some external work
increasing the internal energy of gas and also for doing some external work
none of the above
✅ The correct answer is option C.