Gold number of haemoglobin is 0.03. 100 mL of gold sol will require_ so that gold is not coagulated by 10 mL of 10% NaCl solution. a) 0.003 g of haemoglobin b) 0.1 g of haemoglobin c) 1 g of haemoglobin d) 0.3 g of haemoglobin