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Byju's Answer
Standard XII
Chemistry
Phthalimide Reaction
assertion:-in...
Question
assertion:-in the presence of NaBH4 CH2=CH-CHO is reduced to give CH3-CH2-CH2OH reason:-NaBH4 reduces conjugated double bonds lso
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Q.
Assertion :Heat of hydrogenation of
C
H
2
=
C
H
2
is greater than
C
H
3
C
H
=
C
H
2
. Reason:
C
H
3
give additional effect to double bond
Q.
C
6
H
5
−
C
H
=
C
H
−
C
H
O
→
C
6
H
5
−
C
H
2
−
C
H
2
−
C
H
2
O
H
in the presence of X,what will be X:
Q.
When D-fructose is reduced with
N
a
B
H
4
/
H
3
O
+
, alditols are produced. Which of the following compounds will give the same alditol on reduction with
N
a
B
H
4
/
H
3
O
+
?
Q.
In the given reaction:
C
H
2
=
C
H
−
C
H
O
→
C
H
2
=
C
H
−
C
H
2
O
H
in the presence of X, what will be X:
Q.
Name the chemical reagents required in the following reactions:
(i)
C
H
2
=
C
H
−
C
H
2
O
H
→
C
H
2
=
C
H
−
C
H
O
(ii)
C
H
3
−
C
O
O
H
→
C
H
3
C
O
N
H
2
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