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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)
Saturated hydrocarbons are otherwise referred as ________________
[A]
Alkanes
[B]
Alkenes
[C]
Alkynes
[D]
Alkaloids
(2)
Identify the correct alkane name for the molecular formula C30H62.
[A]
Propdecane
[B]
Eicosane
[C]
Triacontane
[D]
Dodecane
(3)
Identify the smallest alkane which can form a ring structure (cycloalkane)?
[A]
Cyclomethane
[B]
Methane
[C]
Cyclopropane
[D]
Propane
(4)
In which among the following alkane, a carbon atom is displaced so as to form a compactly structure with the resemblance of a butterfly wing?
[A]
Cyclopropane
[B]
Cyclobutane
[C]
Cyclopentane
[D]
Cyclohexane
(5)
The first step in IUPAC nomenclature is to identify the total number of carbon atoms present in the compound.
(6)
The substituent in the chain is named by replacing the “ane” in the alkanes by _________
[A]
ene
[B]
ic
[C]
one
[D]
yl
(7)
The C=C bond in the chain of the compound considered is shown by _________
[A]
Specifying the number of carbon atoms associated with the bond
[B]
Specifying the number of carbon atoms at beginning of the C=C bond
[C]
Specifying the number of carbon atoms at end of the C=C bond
[D]
Specifying the number of carbon atoms in the entire chain
Answer: Specifying the number of carbon atoms at beginning of the C=C bond
(8)
Dienes are the name given to compounds with _________
[A]
Exactly a double bond
[B]
Exactly a triple bond
[C]
Exactly two double bond
[D]
More than two double bond
Answer: Exactly two double bond
(9)
Triple bond with two carbon atoms on either side is called _________
[A]
Methnyl group
[B]
Ethynyl group
[C]
Propionyl group
[D]
Propargyl group
(10)
The substituent groups that are commonly associated with benzene ring are _________
[A]
Phenyl and benzyl
[B]
Propyl and phenyl
[C]
Methyl and benzyl
[D]
Butyl and phenyl
Answer: Phenyl and benzyl
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