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These terminologies are used to differentiate between the dominant physical changes (Operations) and the chemical changes (Process).
What are the further divisions within them to better understand the application in industry?

Fluid flow, heat transfer and distillation may come under unit operations as they are physically derived parameters.
However, chemical reactors where there are chemical reactions would be considered as unit process.

In addition to fluid flow, heat transfer and distillation, what else could we consider as unit operations?