Which of the following is not an example of a polymer 1. plastic 2. nylon 3. amino acid 4. polystyrene

The correct answer option is 3. amino acid.

Explanation:

Amino acids are the organic compounds that contain amine (-NH2) and carboxyl (-COOH) functional groups.

While a polymer is made up of a chain of monomers where the monomer is an amino acid. So when you have more number of amino acids, a polymer is formed.

It means that amino acid alone on its own is not a polymer.

Therefore, the correct answer option is 3. amino acid, rest all options are polymers.

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

: )

it is b that is the answer.