MCQs on Aromaticity
NOTE- Answers showing in Colour and highlighted in Bold
Q. Which of the following is not a characteristic property of arenes?
(a) Delocalisation of 𝞹-electrons
(b) Resonance
(c) Greater stability
(d) Electrophilic additions
Q. Which of the following statements is true for benzene?
(a) Benzene easily undergoes addition due to unsaturation
(b) 𝞹-electrons are delocalised in the benzene ring
(c) Three isomeric forms are formed on monosubstitution of benzene
(d) Two types of C-C bonds are present in benzene
Q. Which of the following is the correct representation to relate the two resonating Kekule structures of benzene?
(a) →
(b) ≡
(c) ↔
(d) ⇌
Q. The bond length of C-C bonds in benzene is
(a) 110 pm
(b) 156 pm
(c) 121 pm
(d) 139 pm
Q. Which of the following is a characteristic of an aromatic compound?
(a) Cyclic
(b) Planar
(c) (4n+2)𝞹 electrons
(d) All of the above
Q. Which of the following is incorrect for benzene?
(a) Planar C6 ring
(b) Localised 𝞹 bonding
(c) sp2 hybridised C atoms
(d) It shows reactions characteristics of C=C double bonds
Q. Which of the following is incorrect for electrophilic substitution?
(a) -NO2 is deactivating and m-directing
(b) -Cl is activating and o, p-directing
(c) -OH is activating and o, p-directing
(d) -CH3 is activating and o, p-directing
Q. The number of delocalised 𝞹 electrons in the benzene ring are
(a) 6
(b) 8
(c) 2
(d) 4
Q. Which of the following is the reactive species in the nitration of benzene?
(a) NO2+
(b) NO2–
(c) NO3
(d) HNO3
