492. The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm”. The pressure at 2.5 m below the oil surface will be ___________________? September 7, 2025 by Admin A. 2 meters of water column B. 3 meters of water column C. 3.5 meters of water column D. 4 m of water column ✅ The correct answer is option B.