TG EAMCET 3 May 2025 Shift 2 Paper

At 298 K , a flask 'A' of unknown volume (V) contains oxygen at 5 atm . Another flask ' B ' of volume 2 L contains helium at 3 atm . Two flasks are connected together by a small tube of zero volume. After the two gases are completely mixed, if the resulting mixture is found to have the mole fraction of oxygen as 0.2 , the volume of flask ' A ' (in L ) is
(Assume oxygen and helium as ideal gases)