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Which one of the sols acts as protective colloid?

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By Expert Faculty of Sri Chaitanya
ctaimg
a
AS2S3
b
Gelatin
c
Au
d
Fe(OH)3,
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detailed solution

Correct option is B

Gelatin act as protective colloids.

ctaimg

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Gold number of gum arabic is 0.15. The amount of gum arabic required to protect 100mL of red gold sol from coagulation by 10mL of 10% NaCl solution is

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