Polymer

1. Why is the process of 'blending and mixing' important in spinning mills in Bangladesh?

• A) It removes trash and dirt from the fibers.
• B) It is required to separate seeds from the cotton.
• C) It ensures yarn of uniform quality and lowers production cost due to reliance on imported cotton.
• D) It is a special combing technique used only for linen fiber.

2. The word 'polymer' comes from two Greek words. What does the word 'poly' mean?

• A) part
• B) many
• C) small
• D) single

3. Wool consists of a protein that is also found in human hair and nails. What is this protein named?

• A) Fibroin
• B) Cellulose
• C) Keratin
• D) Collagen

4. What is the primary difference between Fleece wool and Pulled wool?

• A) Fleece wool is finer than Pulled wool.
• B) Fleece wool comes from goats while Pulled wool comes from sheep.
• C) Fleece wool is collected from living sheep, while Pulled wool is from dead sheep.
• D) Fleece wool is synthetic, while Pulled wool is natural.

5. Which of the following is listed as a natural polymer in the text?

• A) Melamine
• B) Bakelite
• C) PVC
• D) Cotton

6. Bakelite, a polymer used for electric switch boards, is formed from which two different monomers?

• A) Melamine and formaldehyde
• B) Adipic acid and hexamethylene diamine
• C) Phenol and formaldehyde
• D) Ethylene and vinyl chloride

7. What is the process called in which many small molecules join together to form a large molecule?

• A) Ginning
• B) Polymerization
• C) Blending
• D) Carding