10th class Chemistry, Chapter 26: Polymers MCQs

1. Which of the following polymer is a synthetic polymer?

1. (A) Starch
2. (B) Cellulose
3. (C) Animal fat
4. (D) Polyester ✓

2. Which polymer has an amide linkage?

1. (A) Polyester
2. (B) Polyamide ✓
3. (C) Polyethene
4. (D) Polystyrene

3. Identify an ester linkage:

1. (A) R-C(=O)-O-R ✓
2. (B) R-C(=O)-R
3. (C) R-C(=O)-O-NH-R
4. (D) R-C(=O)-NH-R

4. The structure of the monomer of the polymer -[CH₂-CH(OCOCH₃)]ₙ- is:

1. (A) CH₂=CH₂
2. (B) CH₂=CH₂-CH₃
3. (C) CH₂=CH-OCOCH₃ ✓
4. (D) CH₂=CH-CO-O-CH₃

5. Which of the following polymers can be recycled?

1. (A) PET ✓
2. (B) Polystyrene
3. (C) PVC
4. (D) Epoxy

6. Which of the following polymers is biodegradable?

1. (A) Polyamide
2. (B) Polyester
3. (C) Starch ✓
4. (D) PET

7. Which of the following polymers is obtained by condensation polymerization?

1. (A) Polyvinyl chloride
2. (B) Polystyrene
3. (C) Polyamide ✓
4. (D) Polyethene

8. Very large molecules formed by linking together many simple units called monomers are called:

1. (A) isotopes
2. (B) isomers
3. (C) alloys
4. (D) polymers ✓

9. The process of formation of a polymer from a monomer is called:

1. (A) fermentation
2. (B) polymerization ✓
3. (C) cracking
4. (D) hydration

10. Which of the following is a natural polymer?

1. (A) Polythene
2. (B) Nylon
3. (C) Carbohydrates ✓
4. (D) Polyester

11. Man-made polymers include:

1. (A) plastics, synthetic fibers and rubber ✓
2. (B) proteins
3. (C) DNA
4. (D) carbohydrates

12. Polymers are important due to their high strength, flexibility and resistance to:

1. (A) light only
2. (B) water only
3. (C) gravity
4. (D) heat and chemicals ✓

13. Addition polymers are formed from monomers containing a:

1. (A) amide group
2. (B) double bond ✓
3. (C) hydroxyl group
4. (D) carboxyl group

14. In addition polymerization:

1. (A) a by-product is formed
2. (B) water is eliminated
3. (C) ammonia is eliminated
4. (D) no molecule is eliminated and no by-product is formed ✓

15. The monomer of polyethene is:

1. (A) ethyne
2. (B) ethene ✓
3. (C) ethane
4. (D) ethanol

16. Polymerization reactions usually take place at ____ pressure in the presence of a catalyst.

1. (A) zero
2. (B) low
3. (C) negative
4. (D) high ✓

17. The unit which repeats in polyethene is:

1. (A) -CH₃-
2. (B) -CH₂OH-
3. (C) -CHO-
4. (D) -CH₂-CH₂- ✓

18. A condensation polymer is formed with the elimination of a small molecule like:

1. (A) CO only
2. (B) N₂
3. (C) O₂
4. (D) H₂O, HCl or NH₃ ✓

19. PET stands for:

1. (A) polyester thiophthalate
2. (B) polyethylene tetraphenyl
3. (C) polyethene tetrachloride
4. (D) polyethylene terephthalate ✓

20. The monomers of PET are ethane diol and:

1. (A) butane-1,4-diamine
2. (B) terephthalic acid ✓
3. (C) butanedioic acid
4. (D) acetic acid