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JEEMAIN and NEET
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Chemistry
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Surface Chemistry
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Q)
Which of the following is a positively charged sol ?
(
a
)
C
d
s
(
b
)
A
s
2
S
3
(
c
)
g
e
l
a
t
i
n
(
d
)
M
e
t
a
l
H
y
d
r
o
x
i
d
e
s
l
i
k
e
F
e
(
O
H
)
3
,
A
l
(
O
H
)
3
,
e
t
c
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