$A$ mixture of ethanol and acetone shows positive deviation from Raoult's law because:

$A$ binary liquid solution is prepared by mixing $n$-heptane and ethanol. Which one of the following statements is correct regarding the behaviour of the solution?

Which of the following liquid pairs does not show contraction in volume on mixing?

Two liquids $X$ and $Y$ form an ideal solution. At $300 \ K,$ vapour pressure of the solution containing $1 \ mol$ of $X$ and $3 \ mol$ of $Y$ is $550 \ mm \ Hg.$ At the same temperature,if $1 \ mol$ of $Y$ is further added to this solution,vapour pressure of the solution increases by $10 \ mm \ Hg.$ Vapour pressure (in $mm \ Hg$) of $X$ and $Y$ in their pure states will be,respectively:

Which of the following pairs of liquids shows a negative deviation from Raoult's law?

When $25 \ mL$ of acetone is mixed with $25 \ mL$ of ethanol,the volume of the resulting solution will be ...........