Which of the following is a non-ideal solution?

The mixture which shows positive deviation from Raoult's law is

An ideal solution has two components $A$ and $B$. If $A$ is more volatile than $B$ and also $P_A^o > P_T$,then the correct relation between mole fraction of $A$ in liquid $(x)$ and vapour $(y)$ phase is

Which of the following mixture$(s)$ show$(s)$ positive deviation from Raoult's law at $35^{\circ}C$?
$(A)$ Carbon tetrachloride + methanol
$(B)$ Carbon disulphide + acetone
$(C)$ Benzene + toluene
$(D)$ Phenol + aniline

Two compounds form an ideal solution at room temperature. Which of the following are correct for this ideal solution?
$(A)$ $\Delta G_{mix} < 0$
$(B)$ $\Delta S_{mix} > 0$
$(C)$ $\Delta V_{mix} = 0$
$(D)$ $\Delta_{mix} H = 0$

An aqueous solution of hydrochloric acid: