1,4-dimethylbenzene on heating with anhydrous AlCl3 and HCl produces
1, 2-dimethylbenzene
1, 3-dimethylbenzene
1, 2, 3-trimethylbenzene
ethylbenzene
In 2-butene, which one of the following statements is true?
C1-C2 bond is sp3-sp3 --bond
C2-C3 bond is sp3-sp2 --bond
C1-C2 bond is an sp3-sp2 --bond
C1-C2 bond is an sp2-sp2 --bond
The stability of Me2C=CH2 is more than that of MeCH2CH=CH2 due to:
inductive effect of the Me groups
resonance effect of the Me groups
hyperconjugation effect of the Me groups
resonance as well as the inductive effect of the Me groups
Friedel-Craft's reaction using MeCl and anhydrous AlCl3 will take place most efficiently with:
benzene
nitrobenzene
acetophenone
toluene
The ease of nitration of the following three hydrocarbons follows the order:
II = III = I
II > III > I
III > II > I
I = III > II
Among the alkenes which one produces tertiary butyl alcohol on acid hydration?
CH3-CH2-CH=CH2
CH3-CH=CH-CH3
(CH3)2C=CH2
CH3-CH=CH2
Nitrobenzene on reaction with conc. HNO3/H2SO4 at 80-100°C forms which one of the following products?
1, 2-dinitrobenzene
1, 3-dinitrobenzene
1, 4-dinitrobenzene
1, 2, 4-trinitrobenzene
B.
1, 3-dinitrobenzene
NO2 group being electron withdrawing reduces electron density at output positions. Hence, now the meta-position becomes electron rich on which the electrophile (nitronium ion) attacks during nitration.