Test Yourself : Chapter 23 Addition polymers

Which of the following are natural polymers?

(1) Wool

(2) Cellulose

(3) Polyethene

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Which of the following statements concerning addition polymerization is/are correct?

(1) It gives more than one product.

(2) It produces macromolecules.

(3) It produces molecules with the same size.

• A. (1) only
• B. (2) only
• C. (1) and (3) only
• D. (2) and (3) only

Which of the following compounds can undergo addition polymerization?

(1) CH₃CH₂CH₃

(2) CH₂=CHCl

(3) CH₃CH₂CH=CHCH₂CH₃

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Which of the following statements about polystyrene are correct?

(1) The substance produced by heating polystyrene with a foaming agent can be used in making packaging materials.

(2) It is hard and transparent.

(3) It can be used in making measuring cups.

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Which of the following statements concerning the polymer and its uses is INCORRECT?

• A. PVC is used in making drainpipes.
• B. Perspex is used in making shower raincoats.
• C. HDPE is used in making buckets.
• D. PP is used in making food containers.

Which of the options shows the correct monomer structure of Perspex?

• A
• B
• C
• D

Polymers do not have sharp melting points because

• A. they are resistant to heat.
• B. they have simple molecular structures.
• C. the van der Waals’ forces between the polymer molecules are weak.
• D. they are made up of molecules with different chain lengths.

Which of the following chemicals can be used to distinguish between ethene and polyethene?

(1) Bromine water

(2) Acidified KMnO₄(aq)

(3) Acidified K₂Cr₂O₇(aq)

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)