In electrophoresis :-

Options

A. Sol particles move towards opposite electrodes
B. Medium moves towards opposite electrodes
C. Neither (1) & (2)
D. Both (1) & (2)

Answer

**Step-by-Step Solution:**

1. **Understanding Electrophoresis**:
- Electrophoresis is a technique used to separate charged particles in a fluid medium by applying an electric field.

2. **Movement of Charged Particles**:
- In an electric field, charged particles will move towards the electrodes.
- Cations (positively charged ions) will move towards the cathode (negative electrode).
- Anions (negatively charged ions) will move towards the anode (positive electrode).

3. **Analyzing the Options**:
- **Option 1**: "Solve particles move towards opposite electrodes."
- This statement is correct because cations and anions move towards opposite electrodes.
- **Option 2**: "Medium moves towards opposite electrodes."
- This statement is incorrect because the medium itself does not move; only the charged particles within it do.
- **Option 3**: "Neither one and two."
- This is incorrect because option one is correct.
- **Option 4**: "Both one and two."
- This is incorrect because only option one is correct.

4. **Conclusion**:
- The correct answer is **Option 1**: "Solve particles move towards opposite electrodes."