What is the difference between vanishing cream and cold cream?

Which of the following statements is not correct?

What are the dispersed phase and dispersion medium in alcohol respectively?

Presence of colloids helps in sewage disposal.

In physisorption, the adsorbent does not show specificity towards a particular gas.

When hit by light, what happens to a colloidal mixture?

Which of the following colloids is most stable?

Which of the following forces is involved in physical adsorption?