Thermodynamics Terms is an important topic in the Physics section in BITSAT exam. Practising this topic will increase your score overall and make your conceptual grip on BITSAT exam stronger.
This article gives you a full set of BITSAT PYQs for Thermodynamics Terms with explanations for effective preparation. Practice of BITSAT Physics PYQs including Thermodynamics Terms questions regularly will improve accuracy, speed, and confidence in the BITSAT 2026 exam.
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BITSAT PYQs for Thermodynamics Terms with Solutions
1.
An ideal refrigerator has a freezer at a temperature of $-13^{\circ} C$. The coefficient of performance of the engine is $5$. The temperature of the air (to which heat is rejected) will be- $325^{\circ} C$
- $325 \, K$
- $39^{\circ} C $
- $320^{\circ} C $
2.
A solid body of constant heat capacity $1 \,J/?C$ is being heated by keeping it in contact with reservoirs in two ways : (i) Sequentially keeping in contact with $2$ reservoirs such that each reservoir supplies same amount of heat. (ii) Sequentially keeping in contact with $8$ reservoirs such that each reservoir supplies same amount of heat. In both the cases body is brought from initial temperature $100^{\circ}C$ to final temperature $200^{\circ}C$. Entropy change of the body in the two cases respectively is :- ln 2, 2 ln 2
- 2 ln 2, 8 ln 2
- ln 2, 4 ln 2
- ln 2, ln 2
3.
In the adiabatic compression, the decrease in volume is associated with- increase in temperature and decrease in pressure
- decrease in temperature and increase in pressure
- decrease in temperature and decrease in pressure
- increase in temperature and increase in pressure
4.
In the equation $PV^\gamma$ = constant, the value of $\gamma$ is unity. Then the process is- isothermal
- adiabatic
- isobaric
- irreversible
5.
Initially two gas samples $1$ and $2$ are at the same condition. The volume of the two are halved, one isothermally and the other adiabatically. What is the relation between the final pressure $P_1$ and $ P_2$ ?- $P_1 = P_2$
- $P_1 > P_2$
- $P_2 > P_1$
- Cannot be determined
6.
An ideal refrigerator has a freezer at a temperature of $-13^{\circ} C$. The coefficient of performance of the engine is $5$. The temperature of the air (to which heat is rejected) is- $320^{\circ} C$
- $39^{\circ} C$
- $325\, K$
- $325^{\circ} C$
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