Statement-I: In the Daniel cell, if concentration of `Cu^(2+)` and `Zn^(2+)` ions are doubled the emf of the cell will not change.
Because Statement-II: If the concentration of ions in contact with the metals is doubled, the electrode potential is doubled.

Answer

To solve the question regarding the statements about the Daniel cell, we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Understanding the Daniel Cell**:
The Daniel cell consists of two half-cells: one with zinc (Zn) and the other with copper (Cu). The cell operates based on the redox reactions of these metals and their respective ions in solution.

2. **Statement-I Analysis**:
- **Statement**: In the Daniel cell, if the concentration of `Cu^(2+)` and `Zn^(2+)` ions are doubled, the emf of the cell will not change.
- **Explanation**: The electromotive force (emf) of the cell is determined by the Nernst equation, which states that the emf is proportional to the logarithm of the ratio of the concentrations of the ions involved in the half-reactions.
- The Nernst equation for the Daniel cell can be expressed as:
\[ E = E^\circ - \frac{RT}{nF} \ln \left( \frac{[Cu^{2+}]}{[Zn^{2+}]} \right) \]
- If both concentrations are doubled, the ratio \(\frac{[Cu^{2+}]}{[Zn^{2+}]}\) remains the same (2/2 = 1). Therefore, the logarithmic term does not change, and thus the emf remains constant.

3. **Conclusion for Statement-I**:
- **Result**: Statement-I is **incorrect** because the emf does not change when both concentrations are doubled.

4. **Statement-II Analysis**:
- **Statement**: If the concentration of ions in contact with the metals is doubled, the electrode potential is doubled.
- **Explanation**: The electrode potential is directly proportional to the concentration of the ions in contact with the electrode, as described by the Nernst equation.
- If the concentration of \(Cu^{2+}\) ions is doubled, the electrode potential for the copper half-cell will increase, and similarly for the zinc half-cell. However, the potential does not double; it increases logarithmically based on the concentration change.

5. **Conclusion for Statement-II**:
- **Result**: Statement-II is **incorrect** because while the potential increases with concentration, it does not double; it follows a logarithmic relationship.

### Final Conclusion:
- Statement-I is **incorrect**.
- Statement-II is **incorrect**.