Ethers - Structure NEET Questions

Organic Chemistry - Organic Compounds Containing Oxygen

Ethers - Structure MCQ Questions


13.
The IUPAC name of C₂H₅–O–C₂H₅ is:
A.
Diethyl ether
B.
Ethanoxyethane
C.
Diethyl oxide
D.
Ethoxyethane
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ANSWER :
D. Ethoxyethane
14.
Which of the following statements about the C–O bond length is correct?
A.
The C–O bond length in phenol is greater than that in methanol
B.
The C–O bond length in phenol is shorter than that in methanol due to partial double bond character
C.
C–O bonds in ethers are shorter than C=O bonds in ketones
D.
C–O bond length in ethers is much greater than 200 pm
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ANSWER :
B. The C–O bond length in phenol is shorter than that in methanol due to partial double bond character
15.
Why is the C–O–C bond angle in ethers greater than the H–O–H bond angle in water?
A.
Because of repulsion between the bulky alkyl (–R) groups in ethers
B.
Because oxygen is sp² hybridised in ethers
C.
Because lone pairs are absent on oxygen in ethers
D.
Because ethers have stronger hydrogen bonding
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ANSWER :
A. Because of repulsion between the bulky alkyl (–R) groups in ethers
16.
The common name of CH₃–O–CH(CH₃)₂ is:
A.
Methyl propyl ether
B.
Dimethyl ether
C.
Diisopropyl ether
D.
Methyl isopropyl ether
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ANSWER :
D. Methyl isopropyl ether
17.
Which of the following is the correct IUPAC name for C₆H₅–O–C₂H₅?
A.
Ethoxybenzene
B.
Ethyl phenyl ether
C.
Phenoxyethane
D.
Phenetole
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ANSWER :
A. Ethoxybenzene
18.
In the structure of methoxymethane, the H₃C–O–CH₃ bond angle of about 111.7° indicates that the oxygen atom is:
A.
sp hybridised
B.
sp³ hybridised
C.
sp² hybridised
D.
Unhybridised
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ANSWER :
B. sp³ hybridised