GATE Civil Engineering (CE) 2022 Shift 1 Solved Paper

Henry’s law constant for transferring O₂ from air into water, at room temperature, is 1.3 (mmol)/lt-atm Given that the partial pressure of O₂ in the atmosphere is 0.21 atm, the concentration of dissolved oxygen (mg/liter) in water in equilibrium with the atmosphere at room temperature is
(Consider the molecular weight of O₂ as 32 g/mol)