MCQOPTIONS
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MCQOPTIONS
| 1. |
Vapour pressure of pure 'A' is 70 mm of Hg at 25 °C. It forms an ideal solution with 'B' in which mole fraction of A is 0.8. lf the vapour pressure of the solution is 84 mm of Hg at 25 °C, the vapour pressure of pure 'B' at 25 °C is? |
| A. | 70 mm |
| B. | 28 mm |
| C. | 140 mm |
| D. | 56 mm |
| Answer» D. 56 mm | |