1. Multiple Choice Questions (MCQs)
Which of the following best defines polymers?
- a) Small molecules bonded together to form large molecules
- b) Large molecules built up from many smaller molecules called monomers
- c) Simple molecules consisting of one type of atom
- d) Large molecules made up of metals and non-metals
What type of linkage is found in polyamides?
- a) Ester linkage
- b) Amide linkage
- c) Glycosidic linkage
- d) Phosphodiester linkage
Polyethylene is an example of:
- a) A condensation polymer
- b) An addition polymer
- c) A copolymer
- d) A natural polymer
The repeating unit of the addition polymer formed from ethene is:
- a) -CH2-CH2-
- b) -CH-CH-
- c) -CH2-CH-
- d) -C-C-
Nylon-6,6 is an example of a:
- a) Polyester
- b) Polyamide
- c) Polysaccharide
- d) Polyurethane
Which of the following processes produces water as a by-product?
- a) Addition polymerisation
- b) Condensation polymerisation
- c) Hydrogenation
- d) Hydrolysis
Which statement is not true about PET?
- a) It cannot be recycled
- b) It is a polyamide
- c) It can be converted back into monomers and re-polymerised
- d) It is used only in textiles
What is a major environmental challenge caused by plastics?
- a) They are biodegradable
- b) They are easily recycled
- c) They accumulate in oceans
- d) They are non-toxic when burned
Polyesters are formed from:
- a) Dicarboxylic acids and diamines
- b) Dicarboxylic acids and diols
- c) Diols and diamines
- d) Monocarboxylic acids and diols
Which of the following is NOT a property of plastics?
- a) They are lightweight
- b) They are durable
- c) They are easily decomposed by microorganisms
- d) They are versatile in application
2. Short Answer Questions
i. Define a polymer.
ii. What is a monomer?
iii. Identify the repeating unit in polyethylene.
iv. Explain what is meant by addition polymerisation.
v. Describe the process of condensation polymerisation
vi. Name the linkage found in polyesters.
vii. What are the monomers required to form Nylon?
viii. Explain one environmental challenge associated with the disposal of plastics in landfills.
ix. Describe the structure of PET.
x. Why is PET considered recyclable?
xi. How are addition polymers formed from monomers?
xii. What is released during the formation of condensation polymers?
xiii. What is the repeating unit in the polymer formed from ethylene glycol and terephthalic acid?