Reynolds (Reᵢ) number for the impeller is given by (where Dᵢ, stirrer diameter; N, stirrer speed, ρ, density of fluid and μ, viscosity of fluid)

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Reynolds (Reᵢ) number for the impeller is given by (where Dᵢ, stirrer diameter; N, stirrer speed, ρ, density of fluid and μ, viscosity of fluid) Answer: Dᵢ²Nρ/μ

Question context

This question is part of ⚗️ Biochemical Engineering within the broader 🧬 Medical Science subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.