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Organic Chemistry Multiple Choice Questions and Answers – Aromatic Hydrocarbons

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Free download in PDF Organic Chemistry Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>

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(1) Identify the correct statement which is related to aromatic hydrocarbon?
[A] It has only sigma bonds
[B] It has only pi bonds
[C] It has a sigma and two pi bonds
[D] It has a sigma and delocalized pi bond
Answer: It has a sigma and delocalized pi bond
(2) Select the incorrect option.
[A] The aromatic hydrocarbon has a pleasant aroma (smell)
[B] Some of the aromatic compounds are ring-shaped
[C] Aromatic hydrocarbon can be either mono or polycyclic
[D] Benzene is the simplest hydrocarbon
Answer: Some of the aromatic compounds are ring-shaped

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(3) Which among the following is not a property of aromatic hydrocarbon?
[A] These compounds have very good aromaticity
[B] These compounds have excellent stability
[C] These compounds do not undergo nucleophilic substitutions but they undergo electrophilic substitutions
[D] There exists a strong ratio between carbon and hydrogen
Answer: These compounds do not undergo nucleophilic substitutions but they undergo electrophilic substitutions
(4) Arenes does not undergo ___________
[A] Dehydrogenation
[B] Coupling reaction
[C] Halogenation
[D] Cyclo additions
Answer: Dehydrogenation
(5) Which among these is not a representative arene compound?
[A] Durene
[B] Picric chloride
[C] Aspirin
[D] Mesitylene
Answer: Picric chloride
(6) Which among these is the simplest example for polycyclic arenes?
[A] Benzacephenanthrylene
[B] Naphthalene
[C] Pyrene
[D] Dibenz-anthracene
Answer: Naphthalene
(7) Arenes are polar.
[A] True
[B] False
Answer: False
(8) Arenes are _________
[A] volatile
[B] Water soluble
[C] Non-carcinogenic
[D] Mostly gases
Answer: volatile
(9) The main sources of these arenes are _________
[A] Petroleum
[B] Biogas and petroleum
[C] Petroleum and coal tar
[D] Natural gas
Answer: Petroleum and coal tar
(10) Benzene has a stronger Vander-Waal’s force than Methylbenzene.
[A] False
[B] True
Answer: False

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