`N_(2)+O_(2) overset("High temp.")toNOuarr`-Heat.

Options

A. For disproportionation reaction.
B. For comproportionation reaction.
C. For either intermolecular redox reaction or displacement reaction
D. For either thermal combination redox reaction or thermal decomposition redox reaction.

Answer

To solve the question regarding the reaction \( N_2 + O_2 \overset{\text{High temp.}}{\rightarrow} NO + \text{Heat} \), we will analyze the type of reaction it represents step by step.

### Step-by-Step Solution:

1. **Identify the Reactants and Products**:
- The reactants are nitrogen gas (\( N_2 \)) and oxygen gas (\( O_2 \)).
- The product formed is nitric oxide (\( NO \)).
- The reaction is initiated at high temperature.

2. **Determine the Type of Reaction**:
- Since two reactants (\( N_2 \) and \( O_2 \)) are combining to form a single product (\( NO \)), this reaction is classified as a **combination reaction**.

3. **Analyze the Heat Involvement**:
- The reaction is described as releasing heat (exothermic) after it occurs, indicating that heat is involved in the reaction process. This suggests that it is a **thermal reaction**.

4. **Check for Oxidation States**:
- Determine the oxidation states of the elements involved:
- In \( N_2 \), nitrogen has an oxidation state of 0.
- In \( O_2 \), oxygen has an oxidation state of 0.
- In \( NO \), nitrogen has an oxidation state of +2 and oxygen has an oxidation state of -2.
- This indicates that nitrogen is oxidized (from 0 to +2) and oxygen is reduced (from 0 to -2).

5. **Classify as a Redox Reaction**:
- Since one reactant is oxidized and the other is reduced, this reaction is classified as a **redox reaction**.
- Additionally, because two different species are involved in the oxidation and reduction, it is termed an **intermolecular redox reaction**.

6. **Final Classification**:
- The reaction is both a **thermal combination reaction** and an **intermolecular redox reaction**.

### Conclusion:
The correct classifications for the reaction \( N_2 + O_2 \overset{\text{High temp.}}{\rightarrow} NO + \text{Heat} \) are:
- It is a thermal combination reaction.
- It is an intermolecular redox reaction.