Question

Which from following polymers is obtained by condensation polymerisation method ?

• A. \([\,\text{CF}_2-\text{CF}_2\,]_n\)
• B. \([\,\text{CH}_2-\text{CH}_2\,]_n\)
• C. \([\,\text{NH}-(\text{CH}_2)_5-\text{CO}\,]_n\)
• D.

  

Hint:

Condensation polymerisation joins two different monomers with loss of small molecules like water.

Answer 1

The Correct Option is D

Step 1: Look at the monomers
A condensation polymer comes from two functional groups that react and release water. In (D) these are two different monomers, a diacid and a diamine.

Step 2: Addition polymers
Teflon and polythene come from alkene monomers that simply add together.

Step 3: Nylon-6,6 reaction
$n\,\text{HOOC}(\text{CH}_2)_4\text{COOH} + n\,\text{H}_2\text{N}(\text{CH}_2)_6\text{NH}_2 \to [\text{CO}(\text{CH}_2)_4\text{CONH}(\text{CH}_2)_6\text{NH}]_n + 2n\,\text{H}_2\text{O}$.

Step 4: Answer
Option (D).

Final Answer:
Nylon-6,6 is made with loss of water. This is option (D). \[ \boxed{\text{(D) }\text{Nylon-6,6}} \]