Fog is a colloidal solution of

Choose the incorrect statement from the following:

In a colloidal solution,the movement of colloidal particles is known as?

$A$ colloidal system in which gas bubbles are dispersed in a liquid is known as

Which one of the following is not a property of hydrophilic sols?

When a few drops of dilute $HCl$ are added to a freshly prepared precipitate of ferric hydroxide,a reddish-brown colloidal solution is obtained. This phenomenon is known as .......