A. The presence of Oxygen
B. The presence of Hydrogen
C. The absence of Oxygen
D. The presence of excessive Oxygen
Aromatic Hydrocarbons
Phenanthrene is a fused polycyclic compound contains __________ benzene rings ?
A. Two
B. Three
C. Four
D. Five
During sulphonation of benzene H2SO4 generates the electrophile _________________?
A. HSO4-
B. SO2
C. SO3
D. H+
Which compound will readily undergo sulphonation ?
A. Benzene
B. Nitro benzene
C. Toluene
D. Chlorobenzene
Chlorination of toluene in the presence of sublight produces_________________?
A. Benzyl chloride
B. o – chlorotoluene
C. p – chlorotoluene
D. benzoic acid
Reacting bromine with benzene in the presence of sunlight will result in_______________?
A. The rupturing of benzene ring
B. Substitution reaction
C. Addition reaction
D. No-reaction
Nitration of chlorobenzene gives___________________?
A. o – chloronitrobenzene
B. p – chloronitrobenzene
C. m – chloronitrobenzene
D. A & B
Nitronium ion is___________________?
A. NO3
B. NO
C. NO2-
D. NO2+
When benzene is substituted by halogens only which one of the following halogens only which one of the following halogens is given the number one position in the ring while writing the name of compound ?
A. Bromine
B. Chlorine
C. Fluorine
D. Iodine
How many electrons are there in benzene to form delocalized electron cloud________________?
A. 3
B. 4
C. 6
D. 8
