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Byju's Answer
Standard XII
Chemistry
Synthesis of Ethers
A CH3- CH3...
Question
(A)
C
H
3
−
C
|
C
H
3
H
−
C
H
2
−
C
H
2
−
O
H
(B)
C
H
3
−
O
H
|
C
|
C
H
3
−
C
H
2
−
C
H
3
(C)
C
H
3
C
H
3
|
C
H
−
O
H
|
C
H
−
C
H
3
The order of given alkanols
A
,
B
,
C
in their reactivity towards acid catalysed dehydration is:
A
A
>
B
>
C
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B
B
>
A
>
C
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C
B
>
C
>
A
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D
C
>
B
>
A
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Solution
The correct option is
C
B
>
C
>
A
Carbocation formed during reaction are referred to the image above:
Therefore stability of carbocations have the order
3
d
e
g
r
e
e
>
2
d
e
g
r
e
e
>
1
d
e
g
r
e
e
and
C
H
3
is
+
group so, the order of stability is
:
B
>
C
>
A
(B)
C
H
3
−
O
H
|
C
|
C
H
3
−
C
H
2
−
C
H
3
→
C
H
3
−
⊕
|
C
|
C
H
3
−
C
H
2
−
C
H
3
(
2
o
)
(C)
C
H
3
−
C
H
3
|
C
H
−
O
H
|
C
H
−
C
H
3
→
C
H
3
−
C
|
C
H
3
−
C
h
⊕
−
C
H
3
C
H
3
(
2
o
)
Suggest Corrections
0
Similar questions
Q.
The order of reactivity of following alcohols with halogen acids is:
(A)
C
H
3
C
H
2
−
C
H
2
−
O
H
(B)
C
H
3
−
C
H
2
−
C
|
C
H
3
H
−
O
H
(C)
C
H
3
−
C
H
2
−
C
H
3
|
C
|
C
H
3
−
O
H
Q.
Which of the following reaction is example of
S
N
2
reaction using
c
o
n
c
.
H
C
l
:
(
a
)
C
H
3
−
C
H
2
−
O
H
A
n
h
y
Z
n
C
l
2
/
△
−
−−−−−−−−
→
C
H
3
−
C
H
2
−
C
l
(
b
)
C
H
3
−
C
H
3
|
C
|
C
H
3
−
C
H
2
O
H
A
n
h
y
Z
n
C
l
2
/
△
−
−−−−−−−−
→
C
H
3
−
C
H
1
|
C
|
C
H
3
−
C
H
2
−
C
H
3
(
c
)
C
H
3
−
O
H
|
C
|
C
H
3
−
C
H
3
A
n
h
y
Z
n
C
l
2
/
△
−
−−−−−−−−
→
C
H
3
−
C
l
|
C
|
C
H
3
−
C
H
3
(
d
)
C
H
2
=
C
H
−
C
H
2
−
O
H
A
n
h
y
Z
n
C
l
2
/
△
−
−−−−−−−−
→
C
H
2
=
C
H
−
C
H
2
−
C
l
Q.
When vapour of alcohol is passed over Ag powder at
300
∘
C
the product is isobutene. Alcohol in this reaction will be:
(
a
)
C
H
3
−
C
H
2
−
O
H
|
C
H
−
C
H
3
(
b
)
C
H
3
−
2
−
O
H
|
C
|
C
H
3
−
C
H
3
(
c
)
C
H
3
╲
╱
C
H
3
C
H
−
O
H
|
C
|
C
H
3
−
C
H
3
(
d
)
C
H
3
−
O
H
|
C
|
C
H
3
−
C
H
3
Q.
C
H
3
−
O
H
|
C
H
−
C
H
2
−
C
H
2
−
O
|
|
C
−
C
H
3
→
C
H
3
−
O
H
|
C
H
−
(
C
H
2
)
3
−
C
H
3
.
Given conversion can be achieved by:
Q.
A)
C
H
3
−
C
H
2
−
⊕
C
H
2
B)
C
H
3
−
C
H
|
F
−
⊕
C
H
2
C)
C
H
3
−
C
H
|
B
r
−
⊕
C
H
2
D)
C
H
3
−
C
H
|
C
l
−
⊕
C
H
2
Arrange the following carbocations in decreasing order of their stability:
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