# Overall distillation column efficiency for most of the refinery columns can be given by (for μ = 0.07 – 1.4 cp and relative volatility < 4) (where ε = overall column efficiency, % μ = molal average viscosity of feed at average column temperature and pressure, cp Δp = pressure drop per tray, psi) ? with Answer - Chemical Engineering Mcqs | TestPrep

> Solved MCQ: Overall distillation column efficiency for most of the refinery columns can be given by (for μ = 0.07 – 1.4 cp and relative volatility < 4) (where ε = overall column efficiency, % μ = molal average viscosity of feed at average column temperature and pressure, cp Δp = pressure drop per tray, psi) ? Correct Answer: A. η = 17 – 61.1 log μ. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

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# Overall distillation column efficiency for most of the refinery columns can be given by (for μ = 0.07 – 1.4 cp and relative volatility < 4) (where ε = overall column efficiency, % μ = molal average viscosity of feed at average column temperature and pressure, cp Δp = pressure drop per tray, psi) ?

Direct Answer & Quick Reference

The correct option is **A. η = 17 – 61.1 log μ**.

A. η = 17 – 61.1 log μ **(Correct Answer)**

B. η = 24.6 (Δp/μ)

C. η = 1.66 – 0.25 log μ

D. η = 0.25 log μ – 1.67

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Verified Key: A. η = 17 – 61.1 log μ
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