The coagulation of 10 cm3 of Gold sol is completely prevented by addition of 0.025 g of starch to it. The gold number of starch is

Question

The coagulation of 10 cm3 of Gold sol is completely prevented by addition of 0.025 g of starch to it. The gold number of starch is (A) 0.025 (B) 0.25 (C) 2.5 (D) 25

Tardigrade Admin · Accepted Answer

Gold number is the weight of protective colloid in milligrams which prevents the coagulation of 10 cm3 of gold sol ∴ Gold number of starch =0.025×1000 =25(mg)

Q. The coagulation of $10 c m^{3}$ of Gold sol is completely prevented by addition of $0.025 g$ of starch to it. The gold number of starch is

0.025

0.25

2.5

25

Gold number is the weight of protective colloid in milligrams which prevents the coagulation of $10 c m^{3}$ of gold sol
$∴$ Gold number of starch $= 0.025 \times 1000$
$= 25 (m g)$

Q. The coagulation of 10cm3 of Gold sol is completely prevented by addition of 0.025g of starch to it. The gold number of starch is

0.025

0.25

2.5

25

Gold number is the weight of protective colloid in milligrams which prevents the coagulation of 10cm3 of gold sol ∴ Gold number of starch =0.025×1000 =25(mg)

Q. The coagulation of $10 c m^{3}$ of Gold sol is completely prevented by addition of $0.025 g$ of starch to it. The gold number of starch is

Gold number is the weight of protective colloid in milligrams which prevents the coagulation of $10 c m^{3}$ of gold sol
$∴$ Gold number of starch $= 0.025 \times 1000$
$= 25 (m g)$