Q. What is the major product of the reaction of 1-bromopropane with sodium hydroxide in ethanol?
-
A.
Propene
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B.
1-Propanol
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C.
2-Propanol
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D.
No reaction
Solution
The reaction of 1-bromopropane with sodium hydroxide in ethanol leads to an elimination reaction, producing propene.
Correct Answer:
A
— Propene
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Q. What is the product of the reaction between an alcohol and a carboxylic acid?
-
A.
Ester
-
B.
Ether
-
C.
Aldehyde
-
D.
Ketone
Solution
The reaction between an alcohol and a carboxylic acid produces an ester through a process called esterification.
Correct Answer:
A
— Ester
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Q. What is the stereochemistry of 2-butene if the two methyl groups are on opposite sides?
-
A.
Cis
-
B.
Trans
-
C.
R
-
D.
S
Solution
When the two methyl groups are on opposite sides of the double bond, the compound is referred to as trans-2-butene.
Correct Answer:
B
— Trans
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Q. What type of reaction occurs when an alkene reacts with hydrogen in the presence of a catalyst?
-
A.
Hydration
-
B.
Hydrogenation
-
C.
Dehydrogenation
-
D.
Halogenation
Solution
The reaction of an alkene with hydrogen in the presence of a catalyst is called hydrogenation, resulting in an alkane.
Correct Answer:
B
— Hydrogenation
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Q. Which functional group is present in alcohols?
-
A.
Aldehyde
-
B.
Ketone
-
C.
Hydroxyl
-
D.
Carboxyl
Solution
Alcohols contain a hydroxyl (-OH) functional group.
Correct Answer:
C
— Hydroxyl
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Q. Which of the following compounds is a primary amine?
-
A.
CH3-NH2
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B.
CH3-CH2-NH-CH3
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C.
CH3-CH2-CH2-NH2
-
D.
C6H5-NH2
Solution
A primary amine has one alkyl group attached to the nitrogen atom, which is the case for CH3-NH2.
Correct Answer:
A
— CH3-NH2
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Q. Which of the following is a characteristic feature of a nucleophilic substitution reaction?
-
A.
Formation of a carbocation
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B.
Loss of a leaving group
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C.
Formation of a double bond
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D.
Addition of a proton
Solution
In a nucleophilic substitution reaction, a nucleophile attacks the electrophile, resulting in the loss of a leaving group.
Correct Answer:
B
— Loss of a leaving group
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Q. Which of the following is the correct IUPAC name for the compound with the structure CH3-CH(CH3)-CH2-COOH?
-
A.
3-Methylbutanoic acid
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B.
2-Methylbutanoic acid
-
C.
4-Methylbutanoic acid
-
D.
2-Butanoic acid
Solution
The longest carbon chain has four carbons, and the methyl group is on the second carbon, making it 2-methylbutanoic acid.
Correct Answer:
B
— 2-Methylbutanoic acid
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Q. Which of the following statements about stereoisomers is true?
-
A.
They have the same molecular formula
-
B.
They have different connectivity
-
C.
They cannot be interconverted
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D.
They have different physical properties
Solution
Stereoisomers have the same molecular formula but differ in the spatial arrangement of atoms.
Correct Answer:
A
— They have the same molecular formula
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