NEET PYQs for Laws of Thermodynamics with Solutions: Practice NEET Previous Year Questions

Updated on - Jan 19, 2026

Laws of Thermodynamics is an important topic in the Physics 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 Laws of Thermodynamics with explanations for effective preparation. Practice of NEET Physics PYQs including Laws of Thermodynamics questions regularly will improve accuracy, speed, and confidence in the NEET 2026 exam.

NEET PYQs for Laws of Thermodynamics with Solutions

1.
During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio of Cp/Cv for the gas is
- 4/3
- 2
- 5/3
- 3/2
View Solution
2.
The correct option for free expansion of an ideal gas under adiabatic condition is :
- q = 0, $\Delta$ T = 0 and w = 0
- q = 0, $\Delta$ T < 0 and w > 0
- q < 0, $\Delta$ T = 0 and w = 0
- q > 0, $\Delta$ T > 0 and w > 0
View Solution
3.
A sample of 0.1 g of water at 100°C and normal pressure (1.013 × 10⁵ Nm^-2 ) requires 54 cal of heat energy to convert to steam at 100°C. If the volume of the steam produced is 167.1 cc, the change in internal energy of the sample, is
- 104.3J
- 42.2J
- 208.7J
- 84.5J
View Solution
4.
The molar heat capacity of water at constant pressure, $C$, is $75\, JK ^{-1}\, mol ^{-1}$. When $1.0\, KJ$ of heat is supplied to $100\, g$ of water which is free to expand, the increase in temperature of water is :
- 6.6 K
- 1.2 K
- 2.4 K
- 4.8 K
View Solution

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NEET PYQs for Laws of Thermodynamics with Solutions

1.During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio of Cp/Cv for the gas is

2.The correct option for free expansion of an ideal gas under adiabatic condition is :

3.A sample of 0.1 g of water at 100°C and normal pressure (1.013 × 105 Nm-2 ) requires 54 cal of heat energy to convert to steam at 100°C. If the volume of the steam produced is 167.1 cc, the change in internal energy of the sample, is

4.The molar heat capacity of water at constant pressure, $C$, is $75\, JK ^{-1}\, mol ^{-1}$. When $1.0\, KJ$ of heat is supplied to $100\, g$ of water which is free to expand, the increase in temperature of water is :

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1.
During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio of Cp/Cv for the gas is

2.
The correct option for free expansion of an ideal gas under adiabatic condition is :

3.
A sample of 0.1 g of water at 100°C and normal pressure (1.013 × 10⁵ Nm^-2 ) requires 54 cal of heat energy to convert to steam at 100°C. If the volume of the steam produced is 167.1 cc, the change in internal energy of the sample, is

4.
The molar heat capacity of water at constant pressure, $C$, is $75\, JK ^{-1}\, mol ^{-1}$. When $1.0\, KJ$ of heat is supplied to $100\, g$ of water which is free to expand, the increase in temperature of water is :