`Mg+CuOtoMgO+Cu`
Which of the following is wrong relating to the above reaction?

Options

A. CuO gets reduced.
B. Mg gets oxidised.
C. CuO gets oxidised.
D. It is a redox reaction.

Explanation

To determine which statement is wrong regarding the reaction \( \text{Mg} + \text{CuO} \rightarrow \text{MgO} + \text{Cu} \), we will analyze the oxidation and reduction processes involved in this chemical reaction.

### Step 1: Identify the reactants and products
The reactants in the reaction are magnesium (Mg) and copper(II) oxide (CuO). The products are magnesium oxide (MgO) and copper (Cu).

### Step 2: Determine oxidation and reduction
- **Oxidation** is defined as the loss of electrons or the gain of oxygen.
- **Reduction** is defined as the gain of electrons or the loss of oxygen.

### Step 3: Analyze the oxidation states
- In the reactants:
- Magnesium (Mg) has an oxidation state of 0 (elemental form).
- Copper in CuO has an oxidation state of +2.

- In the products:
- In magnesium oxide (MgO), magnesium has an oxidation state of +2.
- Copper (Cu) has an oxidation state of 0 (elemental form).

### Step 4: Identify what is oxidized and what is reduced
- **Magnesium (Mg)** goes from an oxidation state of 0 to +2, indicating it loses electrons and is **oxidized**.
- **Copper(II) oxide (CuO)** goes from +2 to 0, indicating it gains electrons and is **reduced**.

### Step 5: Evaluate the statements
1. **CuO gets reduced.** - This statement is **correct** because CuO is reduced to Cu.
2. **Mg gets oxidized.** - This statement is **correct** because Mg is oxidized to MgO.
3. **CuO gets oxidized.** - This statement is **wrong** because CuO is actually reduced, not oxidized.
4. **It is a redox reaction.** - This statement is **correct** because both oxidation (Mg) and reduction (CuO) occur in the reaction.

### Conclusion
The wrong statement regarding the reaction \( \text{Mg} + \text{CuO} \rightarrow \text{MgO} + \text{Cu} \) is that **CuO gets oxidized**.