Aromaticity Quiz

What criterion must a compound meet to be considered aromatic?

• It must contain only single bonds

• It must have an even number of carbon atoms

• It must have a planar, cyclic structure and be completely conjugated

• It must be a saturated hydrocarbon

The delocalized π system in benzene is formed by a cyclic overlap of:

• 6 sp2 orbitals

• 6 sp3 orbitals

• 6 s orbitals

• 6 p orbitals

What is the product of the Birch reduction of benzene?

• Cyclohexane

• 1,4-cyclohexadiene

• Benzene with a new substituent

• Biphenyl

Which of the following is an example of a PAH?

• Methane

• Naphtalene

• Butanol

• Acetylene

What contributes to the exceptional stability of aromatic compounds such as benzene?

• The presence of alternating single and triple bonds

• Delocalization of π electrons

• High reactivity to addition reactions

• Non-planar structure

Which of the following is an example of a reagent used for catalytic hydrogenation of aromatic compounds?

• Sodium borohydride (NaBH4)

• Grignard reagent (RMgX)

• Nickel (Ni)

• N-bromosuccinimide (NBS)

Cyclohepta-1,3,5-triene is:

• Aromatic

• Antiaromatic

• Nonaromatic

• None of the above

Which of the following statements is correct about benzene?

• All 6 carbon atoms lie in the same plan

• The C-C bond lengths are all the same

• It has delocalized electrons

• All of the above

Which molecule would be considered nonaromatic according to Hückel's rule?

• Cyclobutadiene

• Benzene

• Toluene

• Naphthalene

Which compound is an example of an aromatic heterocycle?

• Ethene (C2H4)

• Pyridine (C5H5N)

• Butane (C4H10)

• Propane acid (C3H6O2)