NEET PYQs for Thermodynamics Terms with Solutions: Practice NEET Previous Year Questions

Updated on - Jan 19, 2026

Thermodynamics Terms is an important topic in the Chemistry section in NEET exam. Practising this topic will increase your score overall and make your conceptual grip on NEET exam stronger.

This article gives you a full set of NEET PYQs for Thermodynamics Terms with explanations for effective preparation. Practice of NEET Chemistry PYQs including Thermodynamics Terms questions regularly will improve accuracy, speed, and confidence in the NEET 2026 exam.

NEET PYQs for Thermodynamics Terms with Solutions

1.
Reversible expansion of an ideal gas under isothermal and adiabatic conditions are as shown in the figure. AB $\rightarrow$ Isothermal expansion AC $\rightarrow$ Adiabatic expansion Which of the following options is not correct ?
- $\Delta S_{isothermal} > \Delta S_{adiabatic}$
- T$_A$ = TB
- $W_{isothermal} > W_{adiabatic}$
- T$_c$ > TA
View Solution
2.
The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is
- 0.125
- 26.8 %
- 6.25 %
- 0.2
View Solution
3.
The correct thermodynamic conditions for the spontaneous reaction at all temperatures is
- $\Delta $H > 0 and $\Delta$S < 0
- $\Delta $H < 0 and $\Delta$S > 0
- $\Delta $H < 0 and $\Delta$S < 0
- $\Delta $H < 0 and $\Delta$S = 0
View Solution
4.
The efficiency of a fuel cell is given by
- $ΔG/ΔS $
- $ΔG/ΔH $
- $ΔS/ΔG $
- $ΔH/ΔG $
View Solution

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NEET PYQs for Thermodynamics Terms with Solutions

1.Reversible expansion of an ideal gas under isothermal and adiabatic conditions are as shown in the figure. AB $\rightarrow$ Isothermal expansion AC $\rightarrow$ Adiabatic expansion Which of the following options is not correct ?

2.The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is

3.The correct thermodynamic conditions for the spontaneous reaction at all temperatures is

4.The efficiency of a fuel cell is given by

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1.
Reversible expansion of an ideal gas under isothermal and adiabatic conditions are as shown in the figure. AB $\rightarrow$ Isothermal expansion AC $\rightarrow$ Adiabatic expansion Which of the following options is not correct ?

2.
The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is

3.
The correct thermodynamic conditions for the spontaneous reaction at all temperatures is

4.
The efficiency of a fuel cell is given by