Question

Choose the correct answer: Bakelite is ​.
A) good conductor of heat
B) poor conductor of heat
C) poor conductor of electricity
D) Both B and C

2. Which of the following is used for making parachute ropes ?
A) Acrylic
B) Rayon
C) PVC
D) Nylon

3. Choose the correct answer: The thermosetting plastic formed by condensation of phenol and formaldehyde is ​.
A) Bakelite
B) Melamine
C) Teflon
D) None of these

4. Choose the correct answer: The synthetic plastic used for making insulation cover in electrical wires and cables is ​.
A) PVC
B) Bakelite
C) Melamine
D) Polythene

5. Choose the correct answer: Natural polymer occurring in plant is ​.
A) cellulose
B) starch
C) Both A and B
D) silk

6. Fill in the blanks: The chemicals which give fruits their smell are ​.

7. Fill in the blanks: The synthetic fiber which works like wool is ​.

8. Which of the following is thermosetting plastic?
A) PVC
B) Polythene
C) Melamine
D) None of these

9. Fill in the blanks: The most suitable polymer for the preparation of handles of cooking utensils is
​.

10. Fill in the blanks: Fibers consisting of many small repeating units are known as ​.

11. Why is polyester not suitable for summer wear?

12. State True or False: Cotton is a natural polymer.
A) true
B) false

13. Which of the following material is non – biodegradable?
A) Cotton
B) Wood
C) Woolen Clothes
D) Plastic bags

14. Choose the correct answer: First synthetic fiber formed from natural material is ​.
A) Terycot
B) Rayon
C) Acrylic
D) Nylon

15. Which of the following material take the longest time to degenerate?
A) Paper
B) Cotton cloth
C) Tin can
D) Woolen Cloth


16. State True or False: Thermoplastics are hard and brittle.
A) true
B) false

17. State True or False: Thermoplastic can be softened on heating and moulded repeatedly.
A) true
B) false

18. Choose the correct answer: Example of thermosetting plastic is ​.
A) PVC
B) Polythene
C) Bakelite
D) None of these

19. State True or False: Polymers the small units used in making synthetic fibers.
A) true
B) false

20. Choose the correct answer: The purest natural form of cellulose is ​.
A) Wool
B) cotton
C) Silk
D) Acrylic


plz ans them​

Answer 1

1. D

2. D

3. A

4. D

5. C

6. Esters

7. PAN (poly acrylonitrile) or Orlon or Acrylan

8. C

9. Bakelite

10. Polymers

11. polyesters dont absorb water or sweat, which makes you really uncomfortable due to heat

12. A

13. D

14. D

15. D

16. B

17. A

18. C

19. B

20. B

can i get a brainliest?