Geo-Scientist Prelims 2026 Chemistry Q64: 1 mol benzene (p^°benzene = 6·0 k Pa) and 2 mol toluene (p^°toluene…

1 mol benzene (\(p^\circ_{benzene}\) = 6·0 k Pa) and 2 mol toluene (\(p^\circ_{toluene}\) = 4·8 k Pa) are mixed to form a solution. Which one of the following statements regarding the above solution is NOT correct ?

1. (a) Total vapour pressure of the solution is 5·2 k Pa
2. (b) Mole fraction of vapours of benzene above the liquid mixture is 0·33
3. (c) The solution will follow Raoult’s law
4. (d) The solution will not show any appreciable change in volume