A liquid is irregularly stirred in a well-insulated container and thereby undergoes a rise in temperature.Regarding the liquid as a system,you can say that

Question

Quizplus · Accepted Answer

Due to the stirring, there is a transfer of mechanical energy from the stirrer to the liquid, which increases the internal energy of the system. As a result, there is a positive change in the internal energy, and the temperature of the liquid rises. Option A is also correct since heat is being transferred from the stirrer to the liquid. Option B is incorrect because there is no work done by the system, and option D is incorrect because there is no work done on the system. Option C is incorrect because the internal energy of the system has changed.

A Liquid Is Irregularly Stirred in a Well-Insulated Container and Thereby