JEE Main 201610 AprilOnline
- Exam
- JEE Main
- Year
- 2016
- Date
- 10 April
- Mode
- Online
- Subject
- Chemistry
- Chapter
- Surface Chemistry
JEE Main 2016 · 10 April · Online · Chemistry · Surface Chemistry
Gold numbers of some colloids are Gelatin: 0 . 005 - 0 . 01 , Gum...
Gold numbers of some colloids are Gelatin: , Gum Arabic: , Oleate: , Starch: . Which among the following is a better protective colloid?
Options
- AGelatin
- BStarch
- COleate
- DGum Arabic
Correct answer
A. Gelatin
Step-by-step solution
Goldnumber ∝ \dfrac{1}{protectivepower}
It is defined as the minimum amount of protective colloid in milligrams which prevents a colour change from red to violet of gold solution by the addition of of Solution.
It is defined as the minimum amount of protective colloid in milligrams which prevents a colour change from red to violet of gold solution by the addition of of Solution.