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Q.

Purple of cassius is:

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a

pure gold

b

colliodal solution of gold

c

gold (I) hydroxide

d

gold CID) chloride

answer is B.

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Detailed Solution

Purple of cassius is colliodal solution of gold.

The interaction between gold salts and tin(II) chloride, a colloidal solution of gold, produces purple of Cassius, a pigment.

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