Which of the following polymer is biodegradable?

1. (CH2-C|Cl=CH-CH2)n

2. (CH2-CH=CH-CH2-CH2-C|CNH)n

3. (O-CH-CH2-C-O-CH-CH2-C)n
            |                 ||             |                 ||
            CH3            O          CH2CH3      O

4. (N|N-(CN2)6-N|H-C||O-(CH2)4-C||O)n

Subtopic:  Application of Polymers |
 63%
From NCERT
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Which of the following statements is not true about low-density polyethylene?

1. Tough

2.  Hard

3. Poor conductor of electricity

4.  Branched structure

Subtopic:  Application of Polymers |
From NCERT
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Match the following:

Column I Column II
A. Bakelite 1. Squeeze bottles
B. Low-density polyethylene 2. Unbreakable crockery
C. Melamine-formaldehyde resin 3. Tyre, cords
D. Nylon- 6 4. Electrical switches


Codes

A B C D
1. 2 3 4 1
2. 4 1 2 3
3. 1 4 3 2
4. 4 3 2 1
Subtopic:  Application of Polymers |
 76%
From NCERT
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Match the materials given in Column I with the polymers given in Column II.

Column I Column II
A. Natural rubber latex 1. Nylon
B. Wood laminates 2.  Dacron
C. Ropes and fibers 3. Urea-formaldehyde resins
D. Polyester fabric 4. cis-polyisoprene

Codes

A B C D
1. 2 3 4 1
2. 3 4 1 2
3. 1 4 3 2
4. 4 3 1 2

Subtopic:  Application of Polymers |
 89%
From NCERT
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Select the correct option based on statements below:

Assertion (A): Polytetrafluoroethylene is used in making non-stick cookware.
Reason (R): Fluorine has the highest electronegativity.
  
1. Both (A) and (R) are true but (R) is not the correct explanation of (A).
2. Both (A) and (R) are true and (R) is the correct explanation of (A).
3. Both (A) and (R) are false.
4. (A) is true but (R) is false.
Subtopic:  Application of Polymers |
 68%
From NCERT
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Which of the following polymers can have strong intermolecular forces?

(a) Nylon

(b) Polystyrene

(c) Rubber

(d) Polyesters

Choose the correct option

1. (a, d)

2. (a, c)

3. (a, b)

4. (b, c)

Subtopic:  Application of Polymers |
 68%
From NCERT
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Which of the following polymers are thermoplastic?

(a) Teflon

(b) Natural rubber

(c) Neoprene

(d) Polystyrene

Choose the correct option

1. (a, d)

2. (a, b)

3. (a, c)

4. (b, d)

Subtopic:  Application of Polymers |
 65%
From NCERT
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Which of the following are characteristics of thermosetting polymers

(a). Heavily branched cross-linked polymers.
(b). Linear slightly branched long-chain molecules.
(c). Become infusible on molding so cannot be reused.
(d). Soften on heating and harden on cooling, can be reused


Choose the correct option

1. (a, c)

2. (a, b)

3. (a, d)

4. (b, d)

Subtopic:  Application of Polymers |
 79%
From NCERT
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