Engineering Chemistry I Practice Test 10

1. Blends of terylene fibers with wool have better crease and wrinkle resistance, they are more durable, higher strength, do not shrink and are not attacked by moths.

2. Which of the following is not an example of a natural biodegradable polymer?

3. Epoxies are used in wide diversity of applications because of their strength, durability and great versatility.

4. Collodion is a mixture of cellulose nitrate with ____________

5. Ion-free water coming out from the exchanger is known as ____________

6. The catalyst used in the preparation of poly-siloxanes is ____________

7. On increasing the temperature, the strength of adhesive ____________

8. The principal applications of composites are in transportation industry, consumer products and industrial and scientific equipment.

9. The strength of adhesive joint is _____________ than mechanical joint obtained by welding or riveting.

10. The nylon-6, 6 have high crystallinity which imparts?