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Chemistry · PYQ NEET UG 2019(2)
हिन्दीIn water saturated air, the mole fraction of water vapour is 0.02. If the total pressure of the saturated air is 1.2 atm, the partial pressure of dry air is
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Correct answer · Option D
1.176 atm
Explanation
According to Dalton's law of partial pressures, \( P_{\text{dry air}} = X_{\text{dry air}} \times P_{\text{total}} = (1 - 0.02) \times 1.2 = 0.98 \times 1.2 = 1.176 \text{ atm} \).
