Organic Chemistry Questions and Answers – Preparation of Ethers | Organic Chemistry Multiple Choice Questions and Answers

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Questions
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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