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Standard XII
Chemistry
Addition Reactions
2,3 -Dimethyl...
Question
2,3-Dimethylbut-2-ene
can be preparaed by heating which of the following compounds with a strong acid?
A
(
C
H
3
)
2
C
H
−
C
|
H
3
C
H
−
C
H
=
C
H
2
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B
(
C
H
3
)
3
C
−
C
H
=
C
H
2
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C
(
C
H
3
)
2
C
=
C
H
−
C
H
2
−
C
H
3
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D
(
C
H
3
)
2
C
H
−
C
H
2
−
C
H
=
C
H
2
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Solution
The correct option is
A
(
C
H
3
)
3
C
−
C
H
=
C
H
2
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Similar questions
Q.
2
,
3
-dimethyl-
2
-butene can be prepared by heating which of the following compounds with a strong acid?
Q.
Assertion :2,3-Dimethylbut-2-ene is more stable than but-2-ene. Reason: Six hyperconjugation structures can be written for 2,3-dimethylbut-2-ene while but-2-ene has twelve.
Q.
Ozonolysis of
2
,
3
−
dimethylbut
−
1
−
ene followed by reduction with zinc and water gives:
Q.
Considering the following alkenes:
But-1-ene
(
i
)
2
,
3
−
D
i
m
e
t
h
y
l
b
u
t
−
2
−
e
n
e
(
i
i
)
2-Methylbut-2-ene
(
i
i
i
)
2-Methylpropene
(
i
v
)
The order of stability is
Q.
2,3-Dimethylbut-2-ene
(
i
)
O
3
/
C
C
l
4
−
−−−−−−
→
(
i
i
)
Z
n
/
H
2
O
P
Product 'P' in the reaction given will be:
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