For different aqueous solutions of `0.1N` urea, `0.1N NaCl, 0.1N Na_(2)SO_(4)` and `0.1N Na_(3)PO_(4)` solution at `27^(@)C`, select the correct statements:

Options

A. The order of osmotic pressure is, urea `gtNaClgtNa_(2)SO_(4)gtNa_(3)PO_(4)`
B. The order of vapour pressure is , `Na_(3)PO_(4)gtNa_(2)SO_(4)gtNaClgt`urea
C. The order of boiling point `(T_(B))` is urea,`gt NaClgtNa_(2)SO_(4)gtNa_(3)PO_(4)`
D. The order of freezing point `(T_(f))` is, urea `gtNaClgtNa_(2)SO_(4)gtNa_(3)PO_(4)`

Answer

4

Explanation

`pi =MRTi`
Hence, `DeltaT_(b)=mK_(p)i," "Delta_(i)=mK_(t)xxi`