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JEE CHEMISTRY MCQ: SURFACE CHEMISTRY
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The gold number of gelatin, haemoglobin and sodium acetate are 0.005, 0.05 and 0.7 respectively. The protective actions will be in order
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Correct option: B
Gelatin >haemoglobin> sodium acetate
Option B is correct because protective power is inversely proportional to the gold number, so the substance with the lowest gold number has the highest protective power.
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