JEE Advanced 2020 Concept Recapitulation Test 4 Paper 1

In a eudiometer 14‌mathrm‌ml of mathrm‌CH4 and 38.5‌mathrm‌ml of mathrm‌O2 was introduced. After explosion and cooling to initial temperature left(23circ‌mathrm‌C‌right) the volume of eudiometer was found to be 25‌mathrm‌ml. Calculate the vapourpressure (in mm of mathrm‌Hg ) of aqueous solution containing a non-volatile solute (A) at 23∘C. Mole fraction of (A) is 0.1. The pressure of eudiometer is 1 atm and is constant.