Question
Which of the following is not a colloidal solution?
- icecream
- milk
- smoke
- NaCl in water
Answer
NaCl in water
Explanation
NaCl in water is not a colloidal solution, as it forms an ionic solution due to the ions dissociating into smaller ions in water.
- Icecream and milk are colloidal solutions of solid and liquid particles in liquid.
- Smoke is a colloidal solution of solid particles in gas.
