Benzene and naphthalene form an ideal solution at room temperature. For this process, the true statement(s) is(are): ΔG is positive, ΔSsystem is positive, ΔSsurroundings=0, ΔH=0

When an ideal solution is formed, the process is spontaneous. According to Raoult's law, for an ideal solution ΔH=0, ΔVmix=0. Since there is no exchange of heat energy between system and surroundings, ΔSsurroundings=0. ΔSsys.=+ve. Therefore, from the relation ΔG=ΔH−TΔS, ΔG=−ve. Hence, the correct options are B, C, and D.