Colloid Classification Explained
A colloid is a heterogeneous mixture where one substance is dispersed evenly throughout another. The dispersed particles are larger than molecules but too small to be seen easily. We need to identify which option does not fit this definition.
Analyzing the Options
- Milk: Contains dispersed fat globules and protein molecules in water. It's a classic example of an emulsion, a type of colloid.
- Mud: While technically a suspension, fine mud particles (like clay) often exhibit colloidal properties and remain dispersed for a significant time. It's often treated as having colloidal characteristics in simpler classifications.
- Butter: Is an emulsion of water droplets dispersed in fat (a type of colloid).
- Boric acid: When dissolved in water, boric acid forms ions and molecules that are very small, creating a true solution, not a colloid. The particles are below the size range for colloids (typically 1-1000 nm).
Identifying the Non-Colloid
Based on the analysis, boric acid dissolves to form a true solution. Milk and butter are types of emulsions (colloids), and mud exhibits colloidal properties due to its fine particle size.
Therefore, Boric acid is the substance that is not a colloid.
Important Questions from Surface Chemistry
- What is the name of the effect seen when light is scattered by tiny particles in a colloidal solution?
The following item consists of two statements, Statement I and Statement II. Examine these two statements carefully and select the correct answer using the code given below :
Statement I : Catalytic hydrogenation is highest when the catalyst remains in the powdered form
Statement II : When a catalyst is in the powdered form, its surface area becomes highestOn adding some detergent to water, the surface tension
- The process by which a chemical change takes place in a substance when electric current is passed through it is called
At the end of the chemical reaction the catalyst remains
