In which thermodynamic process, there is no exchange of heat between the system and surroundings?
In which thermodynamic process, there is no exchange of heat between the system and surroundings?
- Isothermal
- Adiabatic
- Isochoric
- Isobaric
The Correct Option is B
Solution and Explanation
In thermodynamics, the process where no heat is exchanged between the system and its surroundings is the adiabatic process.
Option 1: Isothermal
An isothermal process occurs at constant temperature, involving heat exchange to maintain temperature. So, it is not the correct answer.
Option 2: Adiabatic
An adiabatic process occurs without heat exchange between the system and its surroundings. This is the correct answer.
Option 3: Isochoric
In an isochoric process, volume remains constant, but heat can still be exchanged, so it is not the correct answer.
Option 4: Isobaric
In an isobaric process, the system absorbs or releases heat while maintaining constant pressure. Thus, heat exchange occurs, making it incorrect.
Conclusion: The correct answer is Option 2: Adiabatic, where there is no heat exchange between the system and its surroundings.
Top MHT CET Chemistry Questions
- Which reagent is used in the Lucas test to distinguish between primary, secondary, and tertiary alcohols?
- MHT CET - 2026
- Chemistry
- Alcohols, Phenols and Ethers
- Which gas is evolved when Sodium metal reacts with Ethanol?
- MHT CET - 2026
- Chemistry
- Alcohols, Phenols and Ethers
- Which of the following is not used as a parameter for the classification of polymers?
- MHT CET - 2026
- Chemistry
- classification of polymers
- What is the coordination number of an atom in an FCC unit cell?
- MHT CET - 2026
- Chemistry
- packing efficiency
- Which of the following pairs contains only intensive properties?
- MHT CET - 2026
- Chemistry
- Thermodynamics terms
Top MHT CET Thermodynamics Questions
- A gas is compressed from an initial volume of 10 L to 5 L. The pressure during the compression is constant at 2 atm. Calculate the work done on the gas.
- MHT CET - 2025
- Chemistry
- Thermodynamics
- The enthalpy of vaporization of water is 40.79 kJ/mol. How much heat is required to vaporize 2 moles of water at its boiling point?
- MHT CET - 2025
- Chemistry
- Thermodynamics
- Which is an adiabatic process?
- MHT CET - 2024
- Chemistry
- Thermodynamics
Under isothermal conditions a gas expands from 0.2 dm3 to 0.8 dm3 against a constant pressure of 2 bar at 300 K. Find the work done by the gas.(1 dm3 bar = 100 J)
- MHT CET - 2022
- Chemistry
- Thermodynamics
In an adiabatic expansion of a gas initial and final temperatures are T1 and T2 respectively then the change in internal energy of the gas is [R = gas constant, γ = adiabatic ratio]
- MHT CET - 2022
- Chemistry
- Thermodynamics
Top MHT CET Questions
- Which reagent is used in the Lucas test to distinguish between primary, secondary, and tertiary alcohols?
- MHT CET - 2026
- Alcohols, Phenols and Ethers
- Which gas is evolved when Sodium metal reacts with Ethanol?
- MHT CET - 2026
- Alcohols, Phenols and Ethers
- Which of the following is not used as a parameter for the classification of polymers?
- MHT CET - 2026
- classification of polymers
- If \(y = f\left(\frac{3 + 2x}{3 - 2x}\right)\), where \(f(x) = \tan(\log x)\), and \(\frac{dy}{dx} = \frac{A}{B + Cx^2} \cdot \sec^2\left(\log \frac{3 + 2x}{3 - 2x}\right)\), then find \(A, B, C\).
- MHT CET - 2026
- Coordinate Geometry
- A particle starts oscillating simple harmonically from its mean position with time period \(T\); find the ratio of potential energy to kinetic energy at time \(t = \frac{T}{6}\).
- MHT CET - 2026
- Energy in simple harmonic motion
Concepts Used:
Thermodynamics
Thermodynamics in physics is a branch that deals with heat, work and temperature, and their relation to energy, radiation and physical properties of matter.
Important Terms
System
A thermodynamic system is a specific portion of matter with a definite boundary on which our attention is focused. The system boundary may be real or imaginary, fixed or deformable.
There are three types of systems:
- Isolated System – An isolated system cannot exchange both energy and mass with its surroundings. The universe is considered an isolated system.
- Closed System – Across the boundary of the closed system, the transfer of energy takes place but the transfer of mass doesn’t take place. Refrigerators and compression of gas in the piston-cylinder assembly are examples of closed systems.
- Open System – In an open system, the mass and energy both may be transferred between the system and surroundings. A steam turbine is an example of an open system.
Thermodynamic Process
A system undergoes a thermodynamic process when there is some energetic change within the system that is associated with changes in pressure, volume and internal energy.
There are four types of thermodynamic process that have their unique properties, and they are:
- Adiabatic Process – A process in which no heat transfer takes place.
- Isochoric Process – A thermodynamic process taking place at constant volume is known as the isochoric process.
- Isobaric Process – A process in which no change in pressure occurs.
- Isothermal Process – A process in which no change in temperature occurs.
Laws of Thermodynamics
Zeroth Law of Thermodynamics
The Zeroth law of thermodynamics states that if two bodies are individually in equilibrium with a separate third body, then the first two bodies are also in thermal equilibrium with each other.
First Law of Thermodynamics
The First law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic processes, distinguishing three kinds of transfer of energy, as heat, as thermodynamic work, and as energy associated with matter transfer, and relating them to a function of a body's state, called internal energy.
Second Law of Thermodynamics
The Second law of thermodynamics is a physical law of thermodynamics about heat and loss in its conversion.
Third Law of Thermodynamics
Third law of thermodynamics states, regarding the properties of closed systems in thermodynamic equilibrium: The entropy of a system approaches a constant value when its temperature approaches absolute zero.