Which of the following has an isopropyl group in its structure?
Toluene
Cumene
Xylene
Q.2.
Which of the following is considered an aromatic ether?
Aniline
Phenol
Acetophenone
Anisole
Q.3.
This mono-substituted benzene has the phenyl group directly connected to an FG that has an sp hybridized Nitrogen in its structure
What is Aniline
What is benzonitrile
What is Anisole
What is Acetophenone
Q.4.
This mono-substituted benzene has an aldehyde group (formyl) in its structure
What is benzoic acid?
What is benzaldehyde?
What is benzal?
Q.5.
This mono-substituted benzene with a common name has a vinyl group attached to the phenyl ring
What is allyl benzene?
What is Styrene?
What is Vinylbenzyl?
What is Benzenethene?
Q.6.
How many degrees of unsaturation is present in benzene?
5
4
6
3
Q.7.
Which of the following is FALSE about the property of benzene molecule?
A. It is a planar molecule.
B. It is stabilised by delocalisation of ℼ electrons.
C. Each carbon atom undergoes sp hybridisation.
D. Its typical reaction is electrophilic substitution.
Q.8.
Which of the statement is TRUE about electrophilic aromatic substitution?
A. Substitution of hydrogen atom in methane by chlorine atom
B. Substitution of hydrogen atom in benzene by NO2+
C. Substitution of chlorine atom in ethanoyl chloride by CH3O-
D. Substitution of -OH in ethanol by CI-
Q.9.
The only compound that will yield benzoic acid when reacted with acidified potassium dichromate (VI) solution is
A. CH2=CH2
B. C6H5C(CH3)3
C. C6H5CH(CH2CH3)2
D. Cyclohexane
Q.10.
Which of the reagents below does NOT react with methylbenzene?
A. Bromine gas/iron catalyst
B. Aqueous bromine in catalyst
C. Acidified potassium manganite (VII)
D. Dilute sulphuric acid
Q.11.
The species that attacks the benzene molecule in the nitration of benzene using a mixture of concentrated sulphuric acid and concentrated nitric acid is
A. ⋅NO2
B. NO2+
C. HNO3
D. NO3 -
Q.12.
Nitrobenzene can be prepared by reacting benzene with a mixture of concentrated sulphuric acid and concentrated nitric acid.Which of the following statement best describes the role of concentrated sulphuric acid
A. To get rid of water molecules
B. To form an unstable complex with benzene
C. To protonate nitric acid
D. To act as solvent
Q.13.
Which of the following will produce chlorobenzene when chlorine was passed through it?
A. Iodobenzene at 20⁰C
B. Bromobenzene in the presence of iron
C. Benzene in the presence of iron
D. Benzene in the presence of light
Q.14.
Which of the following reagent does not react with benzene?
A. Concentrated H2SO4
B. HNO3/ H2SO4
C. Iodoehane in the presence of iron
D. Sodium hydroxide solution
Q.15.
What is the C-C bond length in Benzene?
0.137 nm
0.138 nm
0.139 nm
0.140 nm
Q.16.
Which of the following is FALSE about ethene and benzene?
A. Both are planar molecules
B. Both are non-polar molecules
C. Both exhibit sp2 hybridisation
D. Both have the same C:H ratio
Q.17.
Nitronium ion, NO2+, attacks the electrons of the aromatic ring of benzene. Name the type of reaction involved.
A. Free radical substitution
B. Electrophilic aromatic substitution
C. Nucleophilic aromatic substitution
D. Electrophilic aromatic addition
Q.18.
How many delocalised electron are there for each benzene molecules?
2
3
6
12
Q.19.
Does benzene decolorise bromine?
Yes
NO
Who knows
Why did i take chemistry in the first place?
Q.20.
Which of these best describes the bonding incharacters or less?
the p-orbitals overlap to make a pi- bond
the electrons are delocalised ring
p-orbitals ovelap above and below plane and form 2 delocalised rings
p-orbitals ovelap above and below plane and form a delocalised ring
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