Which of the following form an ideal solution?
$I$. Chloroethane and bromoethane
$II$. Benzene and toluene
$III$. $n$-hexane and $n$-heptane
$IV$. Phenol and aniline

At $T(K)$,the vapour pressures of two liquids,heptane and octane are $106 \ kPa$ and $47 \ kPa$ respectively. If $25 \ g$ of heptane and $57 \ g$ of octane form an ideal solution,at $T(K)$ the vapour pressure of solution in $kPa$ is :

Which of the following does not show positive deviation from Raoult's law?

For an ideal solution,the correct option is

Which of the following is true when components forming an ideal solution are mixed?

Raoult's law is obeyed by each constituent of a binary liquid solution when