JEE Main Physics: Thermodynamics Practice Questions

27 questions with answers and step-by-step solutions. Tap any question to see the full worked solution.

Q1.
$Which of the following thermodynamic variables is a state function?$
Easy
Q2.
$For an adiabatic process, which of the following relations is correct?$
Easy
Q3.
$The first law of thermodynamics is a statement of the law of conservation of:$
Easy
Q4.
$What is the change in internal energy of an ideal gas during an isothermal process?$
Easy
Q5.
$If a system undergoes a process where the volume remains constant, the work done by the system is:$
Easy
Q6.
$An ideal gas undergoes a process where its pressure P is proportional to its volume V. If the gas expands from volume V0 to 2V0, what is the work done by the ga$
Medium
Q7.
$A Carnot engine operates between temperatures 600 K and 300 K. If it absorbs 1000 J of heat from the source, what is the work done by the engine?$
Medium
Q8.
$Two moles of an ideal monoatomic gas are heated at constant volume from 300 K to 400 K. What is the change in internal energy of the gas?$
Medium
Q9.
$An ideal gas has a molar heat capacity at constant pressure of 2.5 R. What is the atomicity of the gas?$
Medium
Q10.
$During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. What is the adiabatic exponent gamma of$
Medium
Q11.
$A monatomic ideal gas undergoes a process where its pressure P is related to its volume V by the equation P = P0 exp(alpha V), where P0 and alpha are constants.$
Hard
Q12.
$A thermally insulated container is divided into two compartments by a movable piston. One side contains n moles of an ideal gas at temperature T, and the other$
Hard
Q13.
$A Carnot engine operates between two reservoirs at temperatures 600 K and 300 K. If the engine performs 1000 J of work in each cycle, how much heat is rejected$
Hard
Q14.
$T h e m o l a r h e a t c a p a c i t y o f a g a s ina p r ocess P V^{2} = co n s t an t i s g i v e nb y w ha t e x p r ess i o n, w h er e R i s t h e g a sco n s t an t an d g ammai s t h e a d iaba t i c in d e x ?$
Hard
Q15.
$A Carnot engine operates between temperatures 600 K and 300 K. If it absorbs 800 J of heat from the source, what is the work done by the engine?$
Medium
Q16.
$An ideal gas expands isothermally from volume V to 3V. If the initial pressure is P, what is the final pressure?$
Medium
Q17.
$An ideal gas undergoes a process where its pressure P is related to its volume V by the equation P = kV squared. If the volume changes from V to 2V, what is the$
Medium
Q18.
$A gas follows the process PV to the power 1.5 equals constant. What is the molar heat capacity of the gas if it is monoatomic?$
Medium
Q19.
$Two moles of an ideal monoatomic gas are heated at constant volume from 20 degrees Celsius to 120 degrees Celsius. What is the change in internal energy of the$
Medium
Q20.
$An ideal gas is compressed adiabatically from volume V to V/8. If the initial temperature is 300 K and the adiabatic index is 1.5, what is the final temperature$
Hard
Q21.
$A ni d e a l g a s u n d er g oes a p r ocess w h er e i t s m o l a r h e a t c a p a c i t y i s g i v e nb y C = C_{v} + a l p ha / T, w h er e a l p hai s a co n s t an t . I f t h e g a se x p an d s f r o m v o l u m e V 0 t o 2 V$
Hard
Q22.
$A gas follows the equation of state P(V - b) = RT. What is the change in internal energy for an isothermal expansion from V1 to V2?$
Hard
Q23.
$A Carnot engine operates between two reservoirs at temperatures 600 K and 300 K. If the engine performs 1000 J of work in each cycle, what is the amount of heat$
Hard
Q24.
$In an isochoric process, which of the following remains constant?$
Easy
Q25.
$For an adiabatic process, which of the following relations holds true?$
Easy
Q26.
$What is the value of the work done in an isobaric process where the pressure is P and the change in volume is Delta V?$
Easy
Q27.
$The first law of thermodynamics is a restatement of the law of conservation of:$
Easy

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