Polymers Practice Questions PDF

1. What is the key feature of monomers used in addition polymerisation? * A) They must contain a C=C double bond. * B) They must contain a -COOH group. * C) They must contain an -OH group. * D) They must contain an -NH2 group. 2. What is the repeating unit in poly(ethene)? * A) -[CH2-CH2]- * B) -[C...

1. What is the key feature of monomers used in addition polymerisation? * A) They must contain a C=C double bond. * B) They must contain a -COOH group. * C) They must contain an -OH group. * D) They must contain an -NH2 group. 2. What is the repeating unit in poly(ethene)? * A) -[CH2-CH2]- * B) -[CH=CH]- * C) -[CH2-CH2-CH2]- * D) -[CO-CH2]- 3. Which of the following is an example of an addition polymer? * A) Nylon * B) Terylene * C) Poly(propene) * D) Protein 4. What is the *only* product formed in addition polymerisation? * A) The polymer and water * B) The polymer only * C) The polymer and a small molecule (e.g., HCl) * D) The polymer and carbon dioxide 5. What is a suitable reagent for initiating addition polymerisation? * A) H2O * B) A free radical * C) An acid * D) A base 6. What is a key difference between addition and condensation polymerisation? * A) Addition polymers are stronger. * B) Condensation polymerisation involves the loss of a small molecule. * C) Addition polymerisation involves the loss of a small molecule. * D) Condensation polymers are more exible. 7. What small molecule is commonly eliminated during condensation polymerisation? * A) Carbon dioxide fl * B) Hydrogen * C) Water * D) Oxygen 8. Which of the following pairs of functional groups can react to form a polyester? * A) Alcohol and amine * B) Carboxylic acid and amine * C) Alcohol and carboxylic acid * D) Alkene and alcohol 9. What are the monomers required to make Terylene? * A) Benzene-1,4-dicarboxylic acid and ethane-1,2-diol * B) Benzene-1,4-dicarboxylic acid and ethanoyl chloride * C) Ethanedioic acid and benzene-1,4-diol * D) Ethanedioic acid and ethane-1,2-diol 10. What is the linkage formed in a polyester? * A) Amide * B) Ester * C) Ether * D) Peptide 11. What is the linkage formed in a polyamide? * A) Amide * B) Ester * C) Ether * D) Peptide 12. Which of the following is an example of a condensation polymer? * A) Poly(ethene) * B) Poly(chloroethene) * C) Nylon * D) Poly(propene) 13. What are the monomers required to form nylon 6,6? * A) Hexanedioic acid and 1,6-diaminohexane * B) Hexanedioic acid and hexan-1-ol * C) Hexanedioyl dichloride and 1,6-diaminohexane * D) Hexanedioic acid and 1,6-diaminohexane OR hexanedioyl  dichloride and 1,6-diaminohexane. 14. How can condensation polymers be broken down? * A) Heating to a high temperature * B) By adding an initiator. * C) Hydrolysis * D) By adding more monomers 15. Which of the following is a naturally occurring condensation polymer? * A) Poly(ethene) * B) Protein * C) PVC * D) Te on Answers and Explanations: 1. A - Addition polymers are formed from monomers containing C=C double bonds (alkenes). 2. A - -[CH2-CH2]- The double bond opens and links to other monomers. 3. C - Poly(propene) is made from propene monomers. 4. B - Only the polymer is formed; no other molecules are eliminated. 5. B 6. B - Condensation polymerisation involves the elimination of a small molecule (often water). 7. C - Water (H2O) is the most common small molecule lost. 8. C - Carboxylic acids and alcohols react to form ester linkages. 9. A 10. B 11. A 12. C - Nylon is a polyamide, formed by condensation. 13. D 14. C Condensation polymers can be broken down by hydrolysis (reaction with water), which reverses the condensation reaction. 15. B Proteins are formed from condensation of Amino Acids fl