Ziegler-Natta catalyst is a mixture of .............and ..................and is used for preparation of .............

Answer

**Step-by-Step Solution:**

1. **Identify the Ziegler-Natta Catalyst Components:**
The Ziegler-Natta catalyst is a combination of two main components: a trialkylaluminum and a transition metal halide. The specific examples are triethylaluminum (Al(C2H5)3) and titanium chloride (TiCl3 or TiCl4).

2. **Write the Components:**
- First component: Triethylaluminum (Al(C2H5)3)
- Second component: Titanium chloride (TiCl3 or TiCl4)

3. **Purpose of the Ziegler-Natta Catalyst:**
The Ziegler-Natta catalyst is primarily used for the polymerization of alkenes to produce linear polymers.

4. **Example of Polymerization:**
A common example of the polymerization process using the Ziegler-Natta catalyst is the polymerization of ethene (CH2=CH2) to produce polyethylene (CH2-CH2)n, which is a linear polymer.

5. **Final Answer:**
Therefore, the Ziegler-Natta catalyst is a mixture of **Triethyl Aluminum** and **Titanium Chloride**, and it is used for the preparation of **linear polymers**.

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