FE EXAM · CHEMICAL

FE Chemical Practice Questions

Practice FE-style Chemical questions through interactive engineering problems with guided reasoning and detailed solutions.

Interactive problems•Reasoning explained•Solutions included

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E-063 · FE CHEMICAL Material Energy Balances

The Heater That Needed 418 kW, Not 209

Heating the liquid required 209 kJ/kg. At 2 kg/s, that became 418 kW of heat transfer.

Steady Flow Energy Balance Sensible Heating Intermediate 5–10 min

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Material Energy Balances

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Choose a question and solve it before reading the final engineering verdict.

E-063Material Energy Balances

The Heater That Needed 418 kW, Not 209

Heating the liquid required 209 kJ/kg. At 2 kg/s, that became 418 kW of heat transfer.

Steady Flow Energy Balance Sensible Heating5–10 min

E-062Material Energy Balances

The Evaporator That Removed 750 kg/h of Water

The feed was 1000 kg/h at 10 wt% solids. Concentrating to 40 wt% left only 250 kg/h liquid product.

Evaporator Nonvolatile Solids Balance5–10 min

E-061Material Energy Balances

The Mixer That Needed 100 kg/h of Concentrate

A 10 wt% stream and a 40 wt% stream had to produce 25 wt% product. The concentrate flow was 100 kg/h, not 25.

Steady State Component Balance5–10 min

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How do I practice FE Chemical questions?

Choose a topic, solve the problem before seeing the conclusion, and use the final reasoning trail to identify where your original assumption was supported or needed revision. The goal is not only to reach the answer, but to understand the engineering check behind it.