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Standard XII
Chemistry
Purification of Colloidal Solution
What type of ...
Question
What type of mixtures are represented by the following ? (a) carbon dioxide gas dissolved in water (b). Air containing suspended particles (c). Zoap bubbles formed by the blowing air into soap solution.
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Solution
Solution
Colloids
Suspension
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Similar questions
Q.
Soap bubbles can be formed floating in air by blowing soap solution in air, with the help of a glass tube, but not water bubbles. It is because
Q.
A soap film is made by dipping a circular frame of radius
b
in soap solution. A bubble is formed by blowing air with speed
v
in a cylindrical column. The radius of the bubble formed
R
>
>
b
. If the air is incident normally on the surface of the bubble and air stops after striking the surface, then the radius
R
of the bubble when the soap bubble separates from the ring is:
(Surface tension of liquid is
S
and density of air is
ρ
)
Q.
Classify the following into elements, compounds and mixtures :
(sodium, soil, sugar solution, silver, calcium, carbonate, tin, silicon, coal, air, soap, methane, carbon dioxide, blood).
Q.
Assertion :While blowing a soap bubble, to increase the size of a soap bubble, we have to increase the air pressure within the soap bubble. Reason: To increase the size of soap bubble, more air has to be pushed into the bubble.
Q.
Classify the following into elements, compounds and mixtures.
(
a
)
Sodium
(
b
)
Soil
(
c
)
Sugar solution
(
d
)
Silver
(
e
)
Calcium carbonate
(
f
)
Tin
(
g
)
Silicon
(
h
)
Coal
(
i
)
Air
(
j
)
Soap
(
k
)
Methane
(
l
)
Carbon dioxide
(
m
)
Blood
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