A) \[~C>B>A\]
B) \[~A>B>C\]
C) \[~A=B=C\]
D) \[~B>A>C\]
Correct Answer: B
Solution :
maller the value of gold number, greater will be protecting power of the protective colloid. Hence, protective nature of A, B and C is as \[\begin{align} & \text{Colloidal}\,\text{solution}\,\,\,A\,\,\,\,\,\,\,\,\,>\,\,B\,\,\,\,\,\,\,\,>\,\,C \\ & \text{Gold}\,\text{number:}\,\,\,\,\,\,\,\,\,\,\,\,0.01\,\,\,\,\,\,\,\,2.5\,\,\,\,\,\,\,\,20 \\ \end{align}\]
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