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Which of the following protective colloids has the maximum gold number ?

$(a)\;Gelatin\qquad(b)\;Dextrin\qquad(c)\;Starch\qquad(d)\;Haemoglobin$

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A)
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Answer : Starch
Explanation :
The gold number of the given options are in a range : -
Gelatin (0.005 -0.01) , Hamoglobin (0.03 -0.07) , Dextrin (6 - 20) , starch (20 - 25)
outh of them starch has the maximum gold number .
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