Correct statement is-
| A. |
Chemical adsorption is irreversible in nature |
 |
| B. |
`triangle G>0` for adsorption of gas over liquid |
| C. |
Dispersed phase in colloidal solution of gold moves toward cathode during electrophoresis |
| D. |
Size of colloidal particle varies between `1overset{o}{A}` to `1000overset{o}{A}` |