Chem 212 - Organic Chem for Science Majors » Summer 2021 » Midterm Exam 1
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Question #1
Which reagent can convert alcohol into ester?
A.
Ether
B.
Haloalkane
C.
Carboxylic Acid
D.
Aldehyde
Question #2
A general method for preparing epoxy is the
A.
Hydration of alkenes
B.
Oxidation of alkene
C.
Williamson's synthesis
D.
Combustion of alkene
Question #3
Intermolecular dehydration of an alcohol produces a(n)
A.
Ether
B.
Alkene
C.
Alkyne
D.
Thiol
Question #4
2-Propanol on oxidation produces
A.
Propanone
B.
Propene
C.
Propanal
D.
Diethylether
Question #5
All of the following general formulas except one represent an ether. The exception is
A.
R–O–H
B.
Ar-O-R
C.
R–O–R
D.
Ar–O–Ar
Question #6
What is the IUPAC name for the ether whose common name is ethyl propyl ether?
A.
1-propoxyethane
B.
2-ethoxypropane
C.
1-ethoxypropane
D.
2-propoxyethane
Question #7
Which of the following molecules contains both an alkoxy group and a hydroxy group?
A.
CH3-O-CH3
B.
CH3-O-CH2-O-CH3
C.
CH3-OH
D.
CH3-O-CH2-O-H
Question #8
Which of the following is an incorrect IUPAC name for a phenol derivative?
A.
1-chlorophenol
B.
2-Chlorophenol
C.
2,4-dibromophenol
D.
3-methylphenol
Question #9
Ethers may be viewed as derivatives of water in which both hydrogen atoms have been replaced with
A.
Alkyl groups
B.
Alkyl and hydroxyl groups
C.
Aloxygroups
D.
Hydroxyl groups
Question #10
Phenol can be obtained by ________ of sodium phenoxide.
A.
acidification
B.
Hydrogenation of aromatic ketone
C.
Nitration
D.
Oxidation
Question #11
Which of the following has the highest boiling point?
A.
Pentan-1-ol
B.
Propan-1-ol
C.
Butan-1-ol
D.
Ethanol
Question #12
Phenol is less acidic than
A.
p-nitrophenol
B.
acetic acid
C.
p-methylphenol
D.
Ethanol
Question #13
CH3CH2OH can be converted into CH3CHO by ______________.
A.
treatment with LiAlH4
B.
treatment with KMnO4
C.
treatment with pyridinium chlorochromate
D.
catalytic hydrogenation
Question #14
Which are the initial main products of the reaction of t-butyl ethyl ether in hydrochloric acid?
A.
(CH3)3CCl+ CH3CH2Cl
B.
(CH3)3COH + CH3CH2Cl
C.
(CH3)3CCl + CH3CH2OH
D.
(CH3)3COH + CH3CH2OH
Question #15
The boiling point of ethyl alcohol is much higher than that of dimethyl ether though both have the same molecular weight. Why?
A.
Ethyl alcohol shows hydrogen bonding
B.
Ether is insoluble in water
C.
Methyl groups are attached to oxygen in ether
D.
Dipole moment of ethyl alcohol is less
Question #16
Which statement about diethyl ether, Et2O, is incorrect?
A.
Et2O can form hydrogen bonds with H2O.
B.
In neat Et2O, intermolecular hydrogen bonds are formed.
C.
Et2O is a volatile liquid at 298 K.
D.
Et2O is polar.
Question #17
In a Williamson's synthesis of tBuOMe, which would be the best starting materials to use?
A.
KOMe and tBuCl.
B.
tBuOH and MeCl.
C.
KOtBu and MeCl.
D.
MeOH and tBuCl.
Question #18
We can react alkene with acid to produce epoxides. Which of the following acids is suitable for this purpose?
A.
Hydrochloric acid, HCl
B.
Acetic acid, CH3COOH
C.
Meta-chlorobenzoic acid
D.
Sulfuric acid, H2SO4
Question #19
Thioethers are generally prepared by reacting
A.
Ethanol + S
B.
Ethanol_H2S
C.
Esther + S
D.
Ether + H2S
Question #20
Product of ozonolysis of ethene when reacts with HCN and result is hydrolyzed, a new product is obtained called
A.
Ethanoic acid
B.
2-Ketoethanoic acid
C.
Ethandioic acid
D.
2-Hydroxyethanoic acid
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