Which of the following is correct for a solution showing positive deviations from Raoult's law?

All form ideal solutions except-

H₂O and perchloric acid (b.p. 383 K) form constant boiling mixture at 71.6% of perchloric acid. The

A binary solution of ethanol and n-heptane is an example of-

100 mL of liquid A and 25 mL of liquid B is mixed to give a solution which does not obey Raoult's la

If the vapour pressure of solutions of two liquids are less than those expected from ideal solution