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Olympiad-Science
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Class 7
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Q)
Which of the following is a physical change?
A
.
O
x
i
d
a
t
i
o
n
B
.
R
e
d
u
c
t
i
o
n
C
.
S
u
b
l
i
m
a
t
i
o
n
D
.
D
e
c
o
m
p
o
s
i
t
i
o
n
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