Which of the following is NOT a correct method if the preparation of benzylamine from cyanobenzene ?
H2/ Ni
(i) LiAlH4
(ii) H3O+
(i) SnCl2 + HCl(gas)
(ii) NaBH4
(i) HCl/H2O
(ii) NaBH4
The correct statement regarding the basicity of arylamines is
Arylamines are generally more basic than alkylamines because the nitrogen lone pair electrons are not delocalized by interaction with the aromatic ring pi-electron system
Arylamines are generally more basic than alkylamines, because of aryl group
Arylamines are generally more basic than alkylamines because the nitrogen atom in arylamines is sp-hydridized.
Arylamines are generally more basic than alkylamines because the nitrogen atom in arylamines is sp-hydridized.
In the reaction,
X and Y are
X=2-butyne; Y= 3-hexyne
X=2-butyne;Y=2-hexyne
X=1-butyne ;Y = 2-hexyne
X=1-butyne ;Y = 2-hexyne
Consider the nitration of benzene using mixed conc. H2SO4 and HNO3. If a large amount of KHSO4 is added to the mixture, the rate of nitration will be
slower
uncharge
doubled
doubled
The product formed by the reaction of an aldehyde with a primary amine is
Ketone
Carboxylic acid
Aromatic acid
Aromatic acid
The electrolytic reduction of nitrobenzene in strongly acidic medium produces
p-aminophenol
azoxybenzene
azobenzene
aniline
Which of the following will most stable diazonium salt RN2+X-?
CH3N2+X-
C6H5N2+X-
CH3CH2N2+X-
CH3CH2N2+X-
Nitrobenzene on reaction with conc. HNO3/H2SO4 at 80-1000C forms which one of the following products?
1,2-dinitrobenzene
1,3- dinitrobenzene
1,4-dinitrobenzene
1,4-dinitrobenzene
Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?
-CN
-SO3H
-COOH
-COOH