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Chemistry of Hydrocarbons /
2026 /
Quiz 8

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MDCAT Practice Test - Practice Test - Chemistry - Chemistry of Hydrocarbons - 2026 Quiz

Attempt 10 MCQs on MDCAT Practice Test - Practice Test - Chemistry - Chemistry of Hydrocarbons (Year 2026) | Quiz 8

71. What is the classification of cyclobutadiene?

Anti-aromatic
Aromatic
Non-aromatic
Aliphatic

72. What property of benzene causes protons to appear at high chemical shift (7-8 ppm) in NMR?

Ring current
Inductive effect
Hyperconjugation
Steric effect

73. How many pi electrons are in naphthalene?

10 pi electrons
6 pi electrons
14 pi electrons
18 pi electrons

74. What are compounds with multiple fused benzene rings called?

PAHs
Alkanes
Alkenes
Alkynes

75. How does the resonance energy of benzene compare to that of a conjugated diene?

Greater
Less
Equal
Not comparable

76. What type of reaction is typical for benzene?

Electrophilic substitution
Electrophilic addition
Nucleophilic substitution
Free radical substitution

77. What is the typical reaction type for alkanes, alkenes, and benzene?

Substitution for alkanes, addition for alkenes, substitution for benzene
Addition for all
Substitution for all
Elimination for all

78. How does the reactivity of benzene towards electrophiles compare to alkenes?

Less reactive
More reactive
Equally reactive
Unreactive

79. What is observed when benzene is shaken with bromine water?

Does not decolorize
Decolorizes
Reacts slowly
Forms precipitate

80. What condition is needed for chlorination of benzene?

Requires catalyst
Reacts readily
Gives addition product
Gives polymerization

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