Which of the following polyamides are known as aramids?a)All of the mentionedb)Unsaturated polyamidesc)Aromatic polyamidesd)Aliphatic polyamides

Step 1: Break Down the Problem

To answer the question, we need to identify which type of polyamides are classified as aramids.

Step 2: Relevant Concepts

Aramids are a type of synthetic polymer that have aromatic rings in the polymer chain. They are known for their strength, durability, and heat resistance.

Step 3: Analysis and Detail

1. Unsaturated Polyamides: These do not contain aromatic rings in their structure, so they are not classified as aramids.
2. Aromatic Polyamides: This is the correct classification for aramids, as they specifically contain aromatic groups.
3. Aliphatic Polyamides: These polyamides do not have aromatic rings and thus are not classified as aramids.
4. All of the mentioned: This option is incorrect because not all mentioned types are aramids.

Step 4: Verify and Summarize

Given that aramids specifically refer to aromatic polyamides, the only correct classification among the options is "aromatic polyamides".

Final Answer

The correct answer is c) Aromatic polyamides.