Question

From the following, identify the set in which polymer is correctly matched with its type:

• A. Nylon 6 - addition homopolymer
• B. Nylon 2, 6 - condensation copolymer, biodegradable
• C. Nylon 6, 6 - condensation homopolymer, non-biodegradable
• D. Glyptal - condensation homopolymer

Hint:

Nylon 2,6 = Biodegradable copolymer made from amino acids!

Answer 1

The Correct Option is B

Step 1: Know the two ways polymers form.
Addition polymers come from monomers with double bonds adding together with nothing lost. Condensation polymers form when monomers join and a small molecule like water is thrown out.

Step 2: Check Nylon 6.
Nylon 6 is made from caprolactam by a condensation type ring opening, not by addition. So calling it an addition homopolymer is wrong. Option 1 fails.

Step 3: Check Nylon 6,6.
Nylon 6,6 comes from two different monomers, hexamethylenediamine and adipic acid, so it is a copolymer, not a homopolymer. Option 3 fails.

Step 4: Check Glyptal.
Glyptal is made from glycerol and phthalic acid, two different monomers, so it is a copolymer, not a homopolymer. Option 4 fails.

Step 5: Check Nylon 2,6.
Nylon 2,6 is made from glycine and amino caproic acid by condensation, so it is a condensation copolymer, and because it has amino acid units it is biodegradable. Every part of option 2 is correct.

Step 6: Conclusion.
So the answer is Nylon 2,6 - condensation copolymer, biodegradable. \[ \boxed{\text{Nylon 2,6}} \]