Choose from the following polymers to answer the questions. polymer A [Figure: Structure of Polymer A showing repeating unit -C(=O)-N(H)-R-N(H)-C(=O)-R'-O-] polymer B H H H H H H H H -C—C—C—C—C—C—C—C— Η Η Η Η Η Η Η Η polymer C Ο [Figure: Structure of Polymer C showing repeating unit -O-C(=O)-R-C(=O)-O-R'-] polymer D Ο [Figure: Structure of Polymer D showing repeating unit -O-C(=O)-R-C(=O)-O-R'-] polymer E CH3H CH3H CH3H CH3H | -C—C—C—C—C—C—C—C— ΗΗΗΗΗΗΗΗ polymer F CI H CI H CI H CI H | -C—C—C—C—C—C—C—C— Η Η Η Η Η Η Η Η polymer G N- [Figure: Structure of Polymer G showing repeating unit -N(H)-R-C(=O)-] polymer H [Figure: Structure of Polymer H showing repeating unit -O-C(=O)-R-C(=O)-O-R'-] polymer I FFFFFFFF -C—C—C—C—C—C—C—C— FFFFFFFF Each polymer can be used once, more than once or not at all.

1. (a)Which two polymers are polyesters?[1]
2. (b)Which polymer is used to make both clingfilm and plastic bags?[1]
3. (c)Give the letter of an addition polymer. Give the letter of a condensation polymer.[1]
4. (d)Give the letter of a polymer that is a saturated hydrocarbon.[1]
5. (e)Which polymer could be part of a protein?[1]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.