Which of the following is man made fibre?
(i) Silk (ii) Polyester (iii) Nylon (iv) Wool

Options

A. (i) and (ii)
B. (ii) and (iii)
C. (iii) and (iv)
D. (ii), (iii) and (iv)

Explanation

To determine which of the given options is a man-made fiber, we will analyze each option:

1. **Silk**: Silk is a natural fiber that is produced by silkworms. It is derived from the cocoons of silkworms and is considered a luxury fabric. Therefore, it is not a man-made fiber.

2. **Polyester**: Polyester is a synthetic fiber that is created through a chemical process involving petroleum-based products. It is widely used in clothing and other textiles. Thus, polyester is a man-made fiber.

3. **Nylon**: Nylon is another synthetic fiber that was the first synthetic fiber made entirely from petrochemicals. It is known for its strength and elasticity. Therefore, nylon is also a man-made fiber.

4. **Wool**: Wool is a natural fiber obtained from sheep and other animals. It is used in various textiles and clothing. Thus, wool is not a man-made fiber.

Based on the analysis, the man-made fibers from the options provided are **Polyester** and **Nylon**.

**Final Answer**: (ii) Polyester and (iii) Nylon are man-made fibers.