[" The coagulation of "10cm^(3)" of Gold sol by "1],[" Q."2" ml "10%" nacl solution is completely "],[" prevented by addition of "0.25" g of starch to "],[" it.The gold number of starch is - "]

The coagulation of 10cm^(3) of gold sol by 1 ml 10% NaCl solution is completely prevented by addition of 0.025g of starch to it. The gold number of starch is

The coagulation of 10cm^(3) of gold sol by 1 ml 10% NaCl solution is completely prevented by addition of 0.025g of starch to it. The gold number of starch is

The coagulation of 100mL of a colloidal solution of gold is completely prevented by adding 0.25g of starch to it before adding 10mL of 10%NaCl solution. The gold number of starch is

The coagulation of 100mL of a colloidal solution of gold is completely prevented by adding 0.25g of starch to it before adding 10mL of 10%NaCl solution. The gold number of starch is

The coagulation of 100 ml of a colloidal solution of gold is completely prevented by addition of 0.25 g of starch to it before adding 10 ml of 10% NaCl solution. Calculate the gold number of starch.

What is meant by Gold number of starch is 10-15?