Which has higher b.p.?
(a). Phenol
(b). Benzenethiol

Which has higher boiling point ? (I) Phenol (II) Benzenethiol

Which has higher boiling point ? (I) Phenol (II) Benzenethiol b. Which has higer melting point ? (I) Hydroquinone (II) Catechel c. Explain the less solubility and lower boiling point of: (I) 0-Nitrophenol (II) 0-Hydroxy benzaldehyde (III) 0-Hydroxybenozioc acid (salicylic acid) compared with their p- and m- isomers. d. Which isomer (o, m-, or p) of hydroxy acetophenone is steam volatile ? e. Which of the following shows chelation ? (I) 0-Cresol (II) Oil of wintergreen (III) 0-lodo phenol (IV) 0-Fluoro phenol (V) 0-Cyano phenol f. Why are the dipole moments of phenol 1.7 D) and methanol (1.6 D) in opposite direction ? g. Why is the dipole moment of p-nitro phenol (5.0 D) is reater than of nitro benzene (4.0 D) or phenol ? h. Why is the (C----O) bond in alcohol larger than in phenol ? i. Compare the boiling points and water solubilities of phenol and toluene. j. Why are monophenolic compounds (e.g., cresols) are insoluble in H_(2)O ? k. Which is more soluble in H_(2)O : hexanol (I) or cyclohexanol (II) ?

Which has higher m.p? (a). Hydrozqunone (b). Catechol

Which has the lowest b.p?

Which has the lowest b.p.-

In which case first has higher solubility than second ? (I)Phenol, Benzene , (II)Nitrobenzene, Phenol , (III)o-Hydroxybenzaldehyde, p-Hydroxy benzaldehyde , (IV)Ethanol, Dimethylether,

Arrange the following in the increasing order of acidic nature and discuss the reason : (a) Phenol, (b) p-nitrophenol and (c) p-cresol

Alcohols have higher B.P. due to

NH_3 has a much higher b.p. than PH_3 because