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Organic Chemistry Questions and Answers – Alkyl Halides | Organic Chemistry Multiple Choice Questions and Answers

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 C-X bond has the highest bond energy per mole?
[A] C-Br
[B] C-Cl
[C] C-F
[D] C-I
Answer: C-F
(2) Which alkyl halide has the highest reactivity for a particular alkyl group?
[A] R-F
[B] R-Cl
[C] R-I
[D] R-Br
Answer: R-I
(3) When ethyl chloride reacts with nascent hydrogen, what is the formed product?
[A] Methane
[B] Propane
[C] Butane
[D] Ethane
Answer: Ethane
(4) Which alkyl halide out of the following may follow both SN1 and SN2 mechanism?
[A] CH3-X
[B] (CH3)2CH-X
[C] (CH3)3C-X
[D] (CH3)3C-CH2-X
Answer: (CH3)2CH-X
(5) When two moles of ethyl chloride react with two moles of sodium in the presence of ether what will be formed?
[A] 2 moles of ethane
[B] 1 moles of ethane
[C] 2 moles of butane
[D] 1 moles of butane
Answer: 1 moles of butane
(6) Which of the following halide can give best SN2 reaction?
[A] Primary alkyl halide
[B] Tertiary alkyl halide
[C] Secondary alkyl halide
[D] All can give SN2 reaction at same rate
Answer: Primary alkyl halide
(7) Why alkyl halides are considered to be very reactive compounds towards nucleophile?
[A] they have an electrophilic carbon & a bad leaving group
[B] they have a nucleophilic carbon & a good leaving group
[C] they have an electrophilic carbon
[D] they have an electrophilic carbon & a good leaving group
Answer: they have an electrophilic carbon & a good leaving group
(8) In primary alkyl halides, carbon attached to the halogen atom is further attached to how many carbon atoms?
[A] 1
[B] 2
[C] 3
[D] 4
Answer: 1
(9) Which of the following is not the method of preparation of alkyl halide?
[A] Darzen’s method
[B] Halogenation of alkene
[C] Addition of HX on alkenes
[D] Hydration of alkene
Answer: Hydration of alkene
(10) Which of the following reactant gives the best method of preparation of alkyl halides when reacts with alcohol?
[A] Zn/HCl
[B] PCl5
[C] SOCl2/ Pyridine
[D] PCl3
Answer: SOCl2/ Pyridine
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