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Applications of Colloids

Purple of cas...

Question

Purple of cassius is:

A

colloidal solution of silver

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B

colloidal solution of gold

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C

colloid solution of platinum

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D

oxy acids of gold

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Solution

The correct option is B colloidal solution of gold
Purple of Cassius is a purple pigment formed by the reaction of gold salts with tin(II) chloride which is a colloidal solution of gold.

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