Benzene and toluene form nearly ideal solutions. At 20 ^oC, the vapour pressure of benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure of benzene at 20 ^oC for a solution containing 78 g of benzene and 46 g of toluene in torr is

Equimolar solutions in the same solvent have

Amongst the following the most basic compound is

Which one of the following methods is neither meant for the synthesis nor for separation of amines?