Surface ChemistryHard

Question

Gold number Of haemoglobin is 0.03. Hence, 100 mL of gold sol will require haemoglobin so that gold is not coagulated by 1 mL of 10% NaCI solution :

Options

A.0.03 mg
B.30 mg
C.0.30 mg
D.3 mg

Solution

0.03 = weight of Hb in mg × 10 / 100
weight of Hb in mg = 0.30.

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