The process of froth floatation and chromatography are based on

Options

A. Emulsification
B. Adsorption
C. Absorption
D. none of these

Answer

**Step-by-Step Solution:**

1. **Understanding Froth Flotation:**
- Froth flotation is a process used in metallurgy to separate valuable minerals from their ores. It involves the addition of chemicals (collectors and froth stabilizers) to a mixture of ore and water, which helps in the selective wetting of the mineral particles.

2. **Principle of Froth Flotation:**
- In froth flotation, the valuable mineral particles are preferentially wetted by oils (like pine oil), while the impurities are wetted by water. When air is bubbled through the mixture, the mineral particles attach to the air bubbles and rise to the surface, forming a froth. The impurities, being water-wetted, settle down.

3. **Understanding Chromatography:**
- Chromatography is a technique used to separate mixtures into their individual components. It involves a stationary phase (like chromatography paper) and a mobile phase (the solvent). As the solvent moves up the paper, different components of the mixture travel at different rates due to their varying affinities for the stationary phase.

4. **Principle of Chromatography:**
- The separation in chromatography is based on the principle of absorption. The components of the mixture are absorbed to different extents on the stationary phase, leading to their separation as they move with the mobile phase.

5. **Conclusion:**
- Both froth flotation and chromatography are based on the principle of absorption. In froth flotation, the mineral particles are absorbed by oils, while impurities are absorbed by water. In chromatography, the components of the mixture are absorbed differently on the stationary phase.

**Final Answer:**
The processes of froth flotation and chromatography are based on the principle of **absorption**.

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