Question

The spontaneous flow of heat is always:

• A. From low to high pressure
• B. From high to low pressure
• C. Unidirectional from low temperature to high temperature
• D. Unidirectional from high temperature to low temperature

Answer 1

The correct option is D Unidirectional from high temperature to low temperature

Heat always flows from high temperature to low temperature, so this process occurs naturally on its own, and hence spontenoeous.

Theory:

Spontaneous and Non-Spontaneous process:

Spontaneous process: A process which occurs in a certain direction on its own or by proper initiation.

Note: Does not necessarily take place instantaneously or at a fast rate. These processes are favorable and feasible.

Non-Spontaneous process: Process that cannot occur on its own rather they continue till they receive outside assistance.