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Organic Chemistry Questions and Answers – Electrophiles | Organic Chemistry Multiple Choice Questions and Answers

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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) Which of the following statement is incorrect about electrophiles?
[A] Electrophiles are positively charged or neutral species having vacant orbitals
[B] The electrophiles are attacked by the most electron-populated part of one nucleophile
[C] Chemical species that do not satisfy the octet rule such as carbenes and radicals are electrophiles
[D] Electrophiles are Lewis base
Answer: Electrophiles are Lewis base
(2) In addition of halogen (Bromine) to an alkene, how can we isolate a bromonium in the reaction?
[A] increasing concentration of bromide ion
[B] decreasing concentration of bromide ion
[C] alkene with cation stabilising groups
[D] alkene with less electrophilic centre
Answer: alkene with cation stabilising groups

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(3) Which of the following is not an electrophile?
[A] (CH3)4N+
[B] Cl2
[C] HBr
[D] Br2
Answer: (CH3)4N+
(4) Which of the following is not an electrophile?
[A] H2O
[B] Cl2
[C] HBr
[D] Br2
Answer: HBr
(5) In the given molecule where will electrophile will attack?

[A] I
[B] II
[C] III
[D] IV
Answer: I
(6) Which of the following is most readily undergo electrophilic attack?

[A] I
[B] II
[C] III
[D] IV
Answer: I
(7) What is the correct order for the rate of reaction for the electrophilic attack of the given compounds?

[A] ammonia is more basic and more nucleophilic than water
[B] ammonia is less basic and less nucleophilic than water
[C] ammonia is more basic but less nucleophilic than water
[D] ammonia is less basic but more nucleophilic than water
Answer: ammonia is more basic and more nucleophilic than water
(8) Which of the following statements is true about the following two anionic molecules?

[A] I > II > III
[B] II > I > III
[C] I < II < III
[D] III > I > II
Answer: II > I > III
(9) Which of the following is the product for the given reaction?

[A] 3-Bromophenol
[B] 4- Bromophenol
[C] 3,5-Dibromophenol
[D] 2,4,6-Tribromophenol
Answer: 2,4,6-Tribromophenol
(10) Which ring will readily undergo electrophilic attack?

[A] I
[B] II
[C] III
[D] Both I and III
Answer: II

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