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1

The carbonyl group is?
A)unpolariz
B)polariz
C)polarized with the positive charge on the carbon atom.
D)polarized with the negative charge on the carbon atom.
2

The carbonyl group is?
A)reactive to nucleophiles at the oxygen atom.
B)reactive to nucleophiles at the carbon atom.
C)reactive to electrophiles at the oxygen atom.
D)reactive to electrophiles at the carbon atom.
E)A and C.
F)B and C.
G)B and D.
H)A and D.
3

The stability of the carbonyl group is?
A)increased by electron donating groups.
B)decreased by electron donating groups.
C)increased by electron withdrawing groups.
D)decreased by electron withdrawing groups.
E)none of the above.
4

Hydration of the carbonyl group is?
A)increased by the number of alkyl groups.
B)decreased by the number of alkyl groups.
5

The carbonyl group in an aldehyde is?
A)more reactive to nucleophilic attack than a ketone.
B)less reactive to nucleophilic attack than a ketone.
C)has the same reactivity to nucleophilic attack as a ketone.
D)none of the above.
6

A cyanohydrin is prepared using?
A)hydrogen cyanide.
B)potassium cyanide.
C)methanenitrile.
D)aniline.
E)none of the above.
7

Which statement about hemiacetals is false?
A)a hemiacetal is a geminal hydroxy ether.
B)they are formed by the nucleophilic attack of an alcohol on an aldehyde.
C)they can be converted to a ketal.
D)the formation reaction is a two step process, catalyzed by acids.
E)the formation reaction is reversible.
8

Which statement about acetals is false?
A)they are geminal diethers.
B)they are formed by the nucleophilic attack of an alcohol on an aldehyde.
C)they can be used as a protecting group.
D)the formation is a two step process, catalyzed by acids.
E)the reaction is reversible.
F)None of the above.
9

Imines are the product of reacting an aldehyde or ketone with?
A)an alcohol.
B)a carboxylic acid.
C)an ester.
D)an amine.
E)an alkyl halide.
10

Which statement about the Wittig reaction is false?
A)the common solvents are THF and DMSO.
B)the substrate is an aldehyde or ketone.
C)the product is an alkene.
D)the reagent is a phosphorus ylide.
E)the reaction is regioselective.
11

The phosphorus ylide is?
A)prepared using triphenylphosphine.
B)prepared using an alkyl halide.
C)prepared with a strong base.
D)the preparation is a two step process.
E)all of the above.
12

Aldehydes are oxidized by?
A)aqueous salts of Cr(VI).
B)K2Cr2O7 in aq. H2SO4.
C)Jone's reagent.
D)KMnO4 in H2O.
E)all of the above.
13

The Baeyer-Villiger oxidation?
A)is the oxidation of a ketone.
B)makes use of a peroxy acid as the reagent.
C)produces an ester.
D)is a stereospecific reaction with retention of configuration.
E)involves the migration of the more highly substituted group.
F)all of the above.





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