Question

Which type of colloids do not exist?

• A. A solid phase dispersed throughout another solid phase
• B. A liquid phase dispersed throughout another liquid phase
• C. A gaseous phase dispersed throughout another solid phase
• D. A gaseous phase dispersed throughout another gaseous phase

Answer 1

The correct option is D A gaseous phase dispersed throughout another gaseous phase

Gases are always miscible and that they always form a homogenous system. Strictly speaking, this is not always true. But so far, we have never seen or made a gas-gas colloidal system.