Phenol is bifunctional compound because
It is acidic and contain -OH
It reacts with Na to give phenoxide
It reacts with both Na and Zn to give phenoxide and benzene respectively
Both (a) and (c)
Which of the following has lowest boiling point?
p -nitrophenol
m -nitrophenol
o-nitrophenol
Phenol
One mole of an organic compound A with the formula C3H8O reacts completely with two moles of HI to form X and Y. When Y is boiled with aqueous alkali, it forms Z . Z answers the iodoform test. The compound A is
propan -2- ol
propan - 1- ol
ethoxyethane
methoxyethane
Which of the following compound (s) will give butanone on oxidation with alkaline KMnO4 solution?
Butan-1-ol
Butan-2-ol
Both (a) and (b)
None of the above
The order of reactivity of the following alcohols is
1 > 2 > 3 > 4
1 > 3 > 2 > 4
4 > 3 > 2 > 1
4 > 3 > 1 > 2
C.
4 > 3 > 2 > 1
The order of reactivity depends on the stability of the carbo cations of the respective species. The carbocations formed are
F.CH2.H.CH3, FCH2.CH2H.CH3
CH3.H.CH3 and Ph.H2
The stability order of carb-cation is
PhH2 > CH3.H.CH3 > F.CH2.CH2.H.CH3 > F.CH2.CH2.H.CH3 > FCH2H.CH3
Hence, order of reactivity follows the order (4) > (3) > (2) > (1)
What will be the order of reactivity of the following carbonyl compounds with Grignard's reagent?
I > II > III >IV
IV> III > II >I
II> I> IV >III
III> II> I >IV