Question

24.
Gold number represents :
(A) Quantity of gold in alloys
(B)
Percentage of gold in coin
(C)
Colloid protective power
(D) Percentage of gold in colloidal
gold solution​

Answer 1

Answer:

The gold number represents colloid protective power i.e.option(C).

Explanation:

Let's first understand what is gold number

• The gold number is the number of protective colloid milligrams needed to only stop 10 cc of a gold sol from precipitating when a 10 percent NaCl solution is added.
• The effectiveness of preventing precipitation in a colloidal solution is measured by the gold number. The colloid's protecting power is greater the lower the gold number value.
• The gold number measures the lowest quantity of lyophilic protective colloids that must be applied to lyophobic particles in order to prevent precipitation (in mg).

So, the correct answer among the given option is colloid protective power i.e.option(C).

#SPJ3