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Question
Chemistry
Which of the following will not give a positive iodoform test ?
Q. Which of the following will not give a positive iodoform test ?
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279
UPSEE
UPSEE 2005
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A
C
H
3
C
H
2
C
H
O
H
C
H
3
B
C
H
3
C
H
2
C
H
2
COC
H
3
C
C
H
3
C
H
2
COC
H
2
C
H
3
D
C
H
3
CO
C
6
H
5
Solution:
Iodoform test is positive for compounds which have
C
H
3
−
C
∣∣
O
group or
2
∘
alcohol group
∴
compounds in choice
(
a
)
,
(
b
)
and
(
d
)
give positive iodoform test.
∵
this compound does not have
C
H
3
CO
or
2
∘
alcoholic group.
∴
It does not given positive iodoform test
