Q. What is the IUPAC name of the compound CH3-CH2-CH2-O-CH3?
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A.
Ethyl methyl ether
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B.
Methyl ethyl ether
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C.
Propyl methyl ether
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D.
Methyl propyl ether
Solution
The IUPAC name is Ethyl methyl ether, as it consists of an ethyl group and a methyl group connected by an ether bond.
Correct Answer:
A
— Ethyl methyl ether
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Q. What is the main product when phenol reacts with bromine?
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A.
Bromobenzene
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B.
Bromophenol
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C.
Bromobutane
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D.
Bromocyclohexane
Solution
The main product is Bromophenol, as phenol undergoes electrophilic substitution with bromine.
Correct Answer:
B
— Bromophenol
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Q. What is the molecular formula of ethanol?
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A.
C2H6O
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B.
C2H5OH
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C.
C2H4O
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D.
C2H2O
Solution
Ethanol is commonly represented as C2H5OH, which is the correct molecular formula.
Correct Answer:
B
— C2H5OH
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Q. What is the product of the dehydration of 2-butanol?
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A.
Butene
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B.
Butyne
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C.
Butanol
-
D.
Butanal
Solution
The dehydration of 2-butanol results in butene as the main product.
Correct Answer:
A
— Butene
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Q. What is the product of the oxidation of a primary alcohol?
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A.
Aldehyde
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B.
Ketone
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C.
Carboxylic acid
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D.
Ether
Solution
The oxidation of a primary alcohol typically produces an aldehyde.
Correct Answer:
A
— Aldehyde
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Q. Which alcohol has the highest boiling point?
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A.
Methanol
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B.
Ethanol
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C.
Propanol
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D.
Butanol
Solution
Butanol has the highest boiling point due to its longer carbon chain, which increases van der Waals forces.
Correct Answer:
D
— Butanol
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Q. Which of the following compounds is an ether?
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A.
Methanol
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B.
Ethanol
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C.
Dimethyl ether
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D.
Isopropanol
Solution
Dimethyl ether is an ether, characterized by the presence of an oxygen atom connected to two alkyl or aryl groups.
Correct Answer:
C
— Dimethyl ether
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Q. Which of the following is a characteristic reaction of phenols?
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A.
Esterification
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B.
Oxidation
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C.
Nitration
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D.
Halogenation
Solution
Halogenation is a characteristic reaction of phenols, where they react with halogens to form halogenated phenols.
Correct Answer:
D
— Halogenation
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Q. Which of the following is a primary alcohol?
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A.
2-Propanol
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B.
1-Butanol
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C.
Cyclohexanol
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D.
2-Butanol
Solution
1-Butanol is a primary alcohol because the hydroxyl group is attached to a carbon that is only connected to one other carbon.
Correct Answer:
B
— 1-Butanol
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Q. Which of the following is not a property of alcohols?
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A.
Solubility in water
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B.
High boiling points
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C.
Flammability
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D.
Non-polarity
Solution
Non-polarity is not a property of alcohols; they are generally polar due to the hydroxyl group.
Correct Answer:
D
— Non-polarity
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