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Free download in PDF Organic Chemistry Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
Which of the following is distinguish test for ether?
[A]
Lucas test
[B]
FeCl3 test
[C]
Molisch test
[D]
Zeisel test
(2)
Which of the following statement is not true about ethers?
[A]
The lower ethers are highly volatile and flammable
[B]
Lower ethers also act as anaesthetics
[C]
Ethers are not organic solvents
[D]
Simple ethers (such as diethyl ether) are tasteless
Answer: Ethers are not organic solvents
(3)
Why ether is more volatile than an alcohol having the same molecular formula?
[A]
dipolar character of ethers
[B]
alcohols having resonance structures
[C]
inter-molecular hydrogen bonding in ethers
[D]
inter-molecular hydrogen bonding in alcohols
Answer: inter-molecular hydrogen bonding in alcohols
(4)
Why the boiling point of ethyl alcohol is much higher than that of dimethyl ether though both have the same molecular weight?
[A]
Ether is insoluble in water
[B]
Methyl groups are attached to oxygen in ether
[C]
Dipole moment of ethyl alcohol is less
[D]
Ethyl alcohol shows hydrogen bonding
Answer: Ethyl alcohol shows hydrogen bonding
(5)
Which of the following has lower boiling point than dimethyl ether?
[A]
Pentane
[B]
Propane
[C]
Tetrahydrofuran
[D]
n-butanol
(6)
Which of the following statements about ethers is incorrect?
[A]
Ethers are flammable
[B]
Ethers form peroxides by free radical oxidation
[C]
Ethers are widely used as extraction solvents
[D]
An ether oxygen can only be found within an acyclic carbon chain
Answer: An ether oxygen can only be found within an acyclic carbon chain
(7)
Which of the following product is formed, when ether is exposed to air?
[A]
Oxide
[B]
Alkanes
[C]
Alkenes
[D]
Peroxide of diethyl ether
Answer: Peroxide of diethyl ether
(8)
An organic compound A reacts with sodium metal and forms B. On heating with conc. H2SO4, A gives diethyl ether. What are A and B?
[A]
C2H5OH and C2H5ONa
[B]
C3H7OH and CH3ONa
[C]
CH3OH and CH3ONa
[D]
C4H9OH and C4H9ONa
Answer: C4H9OH and C4H9ONa
(9)
What is the smell of the diethyl ether?
[A]
Vinegar
[B]
Sweet smell
[C]
Rotten egg
[D]
Fish like smell
(10)
Which of the following Is the correct reason for cyclic ether are miscible in water?
[A]
Planer structure
[B]
Larger size
[C]
Molecular weight
[D]
Hydrogen bonding
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