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Olympiad-Science
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Class 10
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Q)
Which chemical has been replaced recently?
(
a
)
C
h
l
o
r
o
f
o
r
m
(
b
)
C
h
l
o
r
o
f
l
u
r
o
c
a
r
b
o
n
s
(
c
)
E
t
h
y
l
e
n
e
d
i
b
r
o
m
i
d
e
(
d
)
D
D
T
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