705. A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is_____________________? September 7, 2025 by Admin A. 0.30 m/sec B. 0.35 m/sec C. 0.40 m/sec D. 0.45 m/sec ✅ The correct answer is option D.
