Question
What is an isothermal process? Also give essential conditions for an isothermal process to take place.

Answer

A change in pressure and volume of a gas without any change in its temperature is called an isothermal process. Two essential conditions for perfect isothermal process are:
  1. The walls of the container must be perfectly conducting to allow free exchange of heat between the gas and its surrounding.
  2. The process of compression or expansion should be slow so as to provide time for exchange of heat.

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