| Category | Description | Example | | :--- | :--- | :--- | | | Direct substitution into formulas. | Compute conversion in a PFR given rate constant. | | Critical Thinking (B) | Requires algorithm application, often with missing data. | Design a reactor system given two competing reactions (series vs. parallel). | | Open-Ended (C) | No single correct answer; requires assumptions and economic trade-offs. | You are a plant engineer. A CSTR is running hot. Propose three solutions, analyze safety vs. conversion. | | Computer-Based (D/E) | Polymath, MATLAB, or COMSOL required. | Simulate a non-isothermal PFR with cooling jacket dynamics. |