Questions given below are based on the given diagram for extractive metallurgy.
(i) At what approximate temperature, zinc and carbon have equal affinity for oxygen ?

Options

A. `1000^@ C`
B. `1500^@ C`
C. `500^@ C`
D. `1200^@ C`

Explanation

To determine the temperature at which zinc and carbon have equal affinity for oxygen, we can follow these steps:

### Step 1: Understand the Concept of Affinity for Oxygen
- Affinity for oxygen refers to the tendency of a substance to react with oxygen. In this case, we are comparing zinc and carbon.

### Step 2: Analyze the Given Diagram
- The problem states that there is a diagram related to extractive metallurgy showing the reactions of zinc and carbon with oxygen. This diagram likely includes curves or lines representing the formation of zinc oxide (ZnO) and carbon monoxide (CO).

### Step 3: Identify the Intersection Point
- The key to solving this problem is to find the intersection point of the two curves in the diagram. This point represents the temperature at which both zinc and carbon have equal affinity for oxygen.

### Step 4: Estimate the Temperature
- From the video transcript, it is mentioned that the approximate temperature at which zinc and carbon have equal affinity for oxygen is around 1000 degrees Celsius.

### Final Answer
- Therefore, the approximate temperature at which zinc and carbon have equal affinity for oxygen is **1000 degrees Celsius**.

---