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