Which of the following statements is/are correct?
(i) Polymers can be natural or synthetic.
(ii) Rayon closely resembles silk.
(iii) Most synthetic fibres have very high moisture absorbing capacity.
(iv) Polyester is resistant to most chemicals.

Options

A. I and II only
B. II and IV only
C. IV only
D. I, II and IV only

Explanation

To determine which statements are correct regarding synthetic fibers and plastics, let's analyze each statement one by one:

### Step-by-Step Solution:

1. **Statement (i): Polymers can be natural or synthetic.**
- **Analysis:** This statement is incorrect because while polymers can be natural (like cellulose in plants) or synthetic (like nylon, polyester), the question specifically mentions "polyester," which is a synthetic fiber. Therefore, this statement is false.
- **Conclusion:** **False**

2. **Statement (ii): Rayon closely resembles silk.**
- **Analysis:** Rayon is known for its silky appearance and feel. It is often referred to as "artificial silk" because it has similar properties to silk, such as being soft and comfortable to wear. Thus, this statement is true.
- **Conclusion:** **True**

3. **Statement (iii): Most synthetic fibers have very high moisture absorbing capacity.**
- **Analysis:** This statement is incorrect. Most synthetic fibers, such as polyester and nylon, do not absorb moisture well. They are hydrophobic, meaning they repel water. Therefore, this statement is false.
- **Conclusion:** **False**

4. **Statement (iv): Polyester is resistant to most chemicals.**
- **Analysis:** This statement is correct. Polyester is known for its excellent resistance to many chemicals, making it durable and suitable for various applications. Therefore, this statement is true.
- **Conclusion:** **True**

### Final Evaluation:
- **Correct Statements:** (ii) and (iv)
- **Answer:** The correct statements are (ii) and (iv).