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Organic Chemistry Questions and Answers – Preparation of Ethers | 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) Chloroethane reacts with X to form diethyl ether. What is X?
[A] NaOH
[B] H2SO4
[C] C2H5ONa
[D] Na2S2O3
Answer: C2H5ONa
(2) The reaction given below is known as by which o the following reaction?

C2H5ONa+IC2H5→C2H5OC2H5+NaI

[A] Kolbe’s synthesis
[B] Wurtz’s synthesis
[C] Williamson’s synthesis
[D] Grignard’s synthesis
Answer: Williamson’s synthesis

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(3) The Williamson ether synthesis produces ethers by reacting which of the following?
[A] alcohol with a metal
[B] alkoxide with a metal
[C] alkoxide with an alkyl halide
[D] alkyl halide with an aldehyde
Answer: alkoxide with an alkyl halide
(4) In which case would a Williamson ether synthesis fail?
[A] sodium ethoxide + iodomethane
[B] sodium ethoxide + iodoethane
[C] sodium ethoxide + 2-iodopropane
[D] sodium ethoxide + 2-iodo-2-methylpropane
Answer: sodium ethoxide + 2-iodo-2-methylpropane
(5) Which of the following reagents should be used to prepare tert-butyl ethyl ether?
[A] tert-butyl bromide and sodium ethoxide
[B] tert-butyl alcohol and ethyl bromide
[C] tert-butyl alcohol and ethanol
[D] potassium tert-butoxide and ethyl bromide
Answer: potassium tert-butoxide and ethyl bromide
(6) Which of the following reagents should be used to prepare tert-butyl propyl ether?
[A] 2-methylpropene and 1-propanol
[B] 2-methylpropene, acetic acid and 1-propanol
[C] 2-methylpropene, H2SO4 and 1-propanol
[D] 1-propyl bromide and tert-butyl alcohol
Answer: 2-methylpropene, H2SO4 and 1-propanol
(7) What will be the reactant and reaction condition required for the given reaction?

CH3CH2OH +? → C2H5OC2H5

[A] H2SO4, 413K
[B] H2SO4, 443K
[C] HNO3, 413K
[D] HNO3, 443K
Answer: H2SO4, 413K
(8) Which of the following is the method of preparation of ether?
[A] Dows process
[B] Williamson synthesis
[C] By decarboxylation of salicylic acid
[D] Hock method
Answer: Williamson synthesis
(9) Williamson synthesis proceed visa which of the following mechanism?
[A] SN1
[B] SN2
[C] E1
[D] E2
Answer: SN2
(10) Which of the following is the commercial method of formation of ether?
[A] Dehydration of alcohol
[B] Williamson ether synthesis
[C] Ullmann condensation
[D] Preparation of epoxides
Answer: Williamson ether synthesis

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