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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)
Choose the incorrect option regarding Isomerism.
[A]
They differ in both physical and chemical properties
[B]
They have the different molecular formula
[C]
There are two types of Isomerism : Structural and Stereo Isomerism
[D]
Geometric and optical isomerism are two types of Stereo Isomerism
Answer: They have the different molecular formula
(2)
Isomerism that arises out of the difference in spatial arrangement of atoms or groups about the doubly bonded carbon atoms are called? (In specific)
[A]
Structural Isomerism
[B]
Stereo Isomerism
[C]
Geometrical Isomerism
[D]
Optical Isomerism
Answer: Geometrical Isomerism
(3)
Isomers with similar groups on the same side are called as ” trans” isomers.
(4)
Which among the following defines Meso forms of isomers?
[A]
Meso form is optically inactive due to external compensation
[B]
The molecules of the meso isomers are chiral
[C]
It can be separated into optically active enantiometric pairs
[D]
It is a single compound
Answer: It is a single compound
(5)
Which among the following does not exhibit geometric isomerism?
[A]
1-hexene
[B]
2-hexene
[C]
3-hexene
[D]
4-hexene
(6)
Which among the following is formed when an alcohol is dehydrated?
[A]
alkane
[B]
alkyne
[C]
alkene
[D]
aldehyde
(7)
A fat on hydrolysis would yield?
[A]
Glycerol and soap
[B]
Ethanol and soap
[C]
Ethanol and glycerol
[D]
Only soap
Answer: Glycerol and soap
(8)
Which among the following correctly defines Diastereomer?
[A]
These have same magnitude but different signs of optical rotation
[B]
Nonsuperimposable object mirror relationship
[C]
These differ in all physical properties
[D]
Separation is very difficult
Answer: These differ in all physical properties
(9)
The molecular formula C5H12 contains how many isomeric alkanes?
(10)
Identify the chiral molecule among the following.
[A]
Isopropyl alcohol
[B]
2-pentanol
[C]
1-bromo 3-butene
[D]
Isobutyl alcohol
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