Question 04: Distinguish between an isothermal and adiabatic change.


Isothermal Change Adiabatic Change
1. A process in which the temperature of the working substance remains constant is called as isothermal process. 1. A process in which the working substance neither receives, nor gives out heat is called as adiabatic process.
2. During operation, the temperature of the working substance remains constant. 2. In this process the amount of heat in the working substance remain constant.
3. Heat exchange is allowed 3. Heat exchange is not allowed
4. It is a slow process 4.  It is a quick process
5. There is no change in internal energy. 5. Change in internal energy is equal to the work done.
6. PV = Constant 6. PVˠ = Constant
7. Container should be good 7. Vessel is perfect nonconductor of heat.
8. Heat energy equation becomes 

dQ = 0 +\frac{dW}{J}

8.  Heat energy equation becomes 

0 = dU + \frac{dW}{J}


Rate this post

By Mithu Khan

I am a blogger and educator with a passion for sharing knowledge and insights with others. I am currently studying for my honors degree in mathematics at Govt. Edward College, Pabna.