Which plastic is used :
for making rain coats, water pipes, pipe fittings and body of the automobile batteries.

Explanation

**Step-by-Step Solution:**

1. **Identify the question:** The question asks for the type of plastic used in making specific items: raincoats, water pipes, pipe fittings, and the body of automobile batteries.

2. **Recall relevant information:** From the study of synthetic fibers and plastics, we know that different types of plastics are used for various applications based on their properties.

3. **Consider the items listed:**
- Raincoats need to be waterproof and flexible.
...