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Hello Kapil ji , Thanks for watching the video and your valuable comments. Reason for 105 Degrees Celsius: Evaporation of Water: Water typically boils at 100 degrees Celsius at standard atmospheric pressure. By setting the temperature slightly above this point, to 105 degrees Celsius, it ensures that all the water content in the sample evaporates thoroughly. This helps in achieving accurate and consistent results. Avoiding Decomposition: Many materials can start to decompose or change chemically at higher temperatures. 105 degrees Celsius strikes a balance between efficient moisture evaporation and minimizing the risk of decomposition for a wide range of materials. Standardization: Having a standard temperature like 105 degrees Celsius allows for consistency and comparability between different tests and laboratories. It's a temperature that has been established through experience and has shown to work well for a variety of sample types. Complete Evaporation: Moisture balances are designed to provide a controlled environment for moisture removal. The 105 degrees Celsius temperature ensures that the sample reaches a point where all the moisture is completely removed without taking an excessively long time for the analysis. I hope your doubt is clear