Which of the following statements about terylene are correct

Options

A. It is poly ester
B. It is obtained by the reaction between ethylene glycol and terephthalic acid
C. It is a condensation polymer
D. It is a natural polymer

Explanation

To determine which statements about terylene are correct, let's analyze each statement step by step.

### Step 1: Identify the nature of terylene
Terylene is a type of polymer. Specifically, it is classified as a polyester due to the presence of ester linkages in its structure.

**Hint:** Look for the functional groups present in the polymer to identify its type.

### Step 2: Understand the monomers involved
Terylene is synthesized through a reaction between two specific monomers: ethylene glycol and terephthalic acid. Ethylene glycol is a diol (an alcohol with two hydroxyl groups), and terephthalic acid is a dicarboxylic acid.

**Hint:** Identify the monomers used in the polymerization process to understand how the polymer is formed.

### Step 3: Determine the type of polymerization
The polymerization process that forms terylene is a condensation reaction. In this process, water is eliminated as a byproduct when the hydroxyl groups of ethylene glycol react with the carboxylic acid groups of terephthalic acid.

**Hint:** Recall that condensation polymers are formed by the elimination of small molecules (like water) during the reaction.

### Step 4: Evaluate the statements
1. **It is a polyester** - This statement is correct because terylene contains ester linkages.
2. **It is obtained by reaction between ethylene glycol and terephthalic acid** - This statement is also correct as these are the monomers used to synthesize terylene.
3. **It is a condensation polymer** - This statement is correct since terylene is formed through a condensation reaction.
4. **It is a natural polymer** - This statement is incorrect. Terylene is a synthetic polymer and not a natural one.

### Conclusion
The correct statements about terylene are:
- It is a polyester.
- It is obtained by the reaction between ethylene glycol and terephthalic acid.
- It is a condensation polymer.

The incorrect statement is that it is a natural polymer.

**Final Answer:** The correct statements are 1, 2, and 3. The incorrect statement is 4.

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