Which observation (s) reflect(s) colligative properties ?
(i) A 0.5m NaBr solution has a higher vapour pressure than a 0.5 m `BaCl_2` solution at the same temperature.
(ii) Pure water freezes at the higher temperature than pure methanol.
(iii) A 0.1 m NaOH solution freezes at a lower temperature than pure water.
Choose the correct answer from the codes given below

Options

A. (i), (ii) and (iii)
B. (i) and (ii)
C. (ii) and (iii)
D. (i) and (iii)

Answer

D

Explanation

Colligative properties depends upon the no. of particles. Since methanol is non electrolyte hence connot be considered.