Multiple Choice QuestionsGiven are cyclohexanol (I), acetic acid (II), 2,4,6-trinitropenol (III) and phenol (IV). In these, the order of decreasing acidic character will be
III > II> IV> I
II > III> I > IV
II > III> IV> I
II > III> IV> I
Among the following four compounds
A) Phenol
B) Methyl Phenol
C) meta - nitrophenol
D) para-nitrophenol
the acidity order is
D > C > A > B
C > D > A> B
A > D > C > B
A > D > C > B
Consider the following reaction,
the product,Z,is
toluene
benzaldehyde
benzoic acid
benzoic acid
Which one of the following is most reactive towards electrophilic attack?
C.
Electron releasing groups stabilise the intermediate cation whereas electron withdrawing groups destabilise it.
The order of electron withdrawing group is:
NO2 > Cl >OH> C6H5
Hence is
more reactive towards electrophilic substitution because -OH group least destabilise the carbocation. Further -OH group is strongly activating group while -NO2 and -Cl are deactivating group.
The order of decreasing reactivity towards an electrophilic reagent, for the following:
i) Benzene
ii) Toluene
iii) Chlorobenzene
iv) Phenol
would be:
(i) > (ii) > (iii) > (iv)
(ii) > (iv) > (i) > (iii)
(iv) > (iii) > (ii) >(i)
(iv) > (iii) > (ii) >(i)
The major organic product in the reaction,
CH3 -O- CH(CH3)2 + HI → Product is:
CH3OH + (CH3)2 + CHI
ICH2OCH(CH3)2
CH3O CI(CH3)2
CH3O CI(CH3)2
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