Rayon yarns are obtained from

Options

A. Polymethylene
B. Polyesters
C. Cellulose
D. Styrene

Answer

To determine the source from which rayon yarns are obtained, we can follow these steps:

### Step 1: Understand Rayon
Rayon is a type of manufactured fiber that is derived from natural sources. It is known for its silk-like feel and is often used as a substitute for silk.

**Hint:** Consider the characteristics of rayon and its classification as a fiber.

### Step 2: Identify the Raw Material
Rayon is primarily made from cellulose, which is a natural polymer found in plant cell walls. The cellulose is usually sourced from wood pulp or other agricultural products.

**Hint:** Think about the natural materials that contain cellulose.

### Step 3: Eliminate Other Options
- **Polymethylene**: This is a synthetic polymer and not a source for rayon.
- **Polyester**: This is also a synthetic fiber and does not relate to rayon.
- **Styrene**: This is a compound used to make polystyrene, which is not related to rayon.

**Hint:** Review the definitions of the other options to see if they are synthetic or natural.

### Step 4: Conclusion
Since rayon is regenerated from cellulose, the correct answer to the question "Rayon yarns are obtained from" is **cellulose**.

**Final Answer:** Rayon yarns are obtained from cellulose.