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Standard XII
Chemistry
Introduction to Geometric Isomerism
The alkene th...
Question
The alkene that exhibits geometrical isomerism is:
A
Propene
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B
2-Methyl propene
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C
2-Butene
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D
2-Methyl-2-butene
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Solution
The correct option is
C
2-Butene
2-butene exist as cis or trans.
Due to restricted rotation around double bond, it exhibits geometric isomerism.
In other options one carbon of (C=C) have same groups, so does not show geometrical isomerism.
Option C is correct.
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Similar questions
Q.
There are some alkenes are given as follow:
2-methyl propene, cis-2-butene, trans-2-butene
Which of the following is the correct order for increasing order of reactivity for acid catalyzed hydration?
1) trans-2-butene< cis-2-butene < 2-methyl propene
2) cis-2-butene< trans-2-butene < 2-methyl propene
3) 2-methyl propene < trans-2-butene < cis-2-butene
Q.
The isomerism exhibited by 2-methyl-1-butene and 2-methyl-2- butene is:
Q.
Which isomerism relates 2-methyl-1-butene and 2-methyl-2-butene?
Q.
How many of the following five alkenes: propene, butene, pentene, hexene, and heptene are liquid at room temperature?
Q.
As a method for the preparation of alkenes, a weakness in the acid-catalyzed dehydration of alcohols is that the initially formed alkenes (or mixture of alkenes) sometimes isomerizes under the condition of its formation. Write a stepwise mechanism showing how 2-methyl-1-butene might isomerize to 2-methyl-2-butene in the presence of sulphuric acid.
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