In chromatography different constituents of a mixture get adsorbed differently on same adsorbent because

Options

A. they have difference in pressure
B. they have different rates of movement
C. both (a) and (b)
D. none of these.

Explanation

**Step-by-Step Solution:**

1. **Understanding Chromatography**:
- Chromatography is a technique used to separate the components of a mixture. It involves the movement of different substances through a stationary phase (adsorbent) and a mobile phase (solvent).

2. **Adsorption Process**:
- In chromatography, different constituents of a mixture interact with the adsorbent differently. This interaction is known as adsorption.

3. **Difference in Rates of Movement**:
- The key reason why different constituents are adsorbed differently is due to their varying rates of movement. Each component has a unique affinity for the adsorbent, which affects how quickly or slowly it moves through the stationary phase.

4. **Traveling Distances**:
- Because of these differences in rates of movement, the components of the mixture travel different distances along the stationary phase. This leads to their separation.

5. **Conclusion**:
- Therefore, the different constituents of a mixture get adsorbed differently on the same adsorbent because of the difference in their rates of movement, which causes them to travel different distances in the solvent.

**Final Answer**: Different constituents of a mixture get adsorbed differently on the same adsorbent due to the difference in their rates of movement.

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