The monomer units of silicons a water repellant, acid resistant and heat resistant polymer is:

1. Si                         

2. SiO2

3. R2SiO                   

4. None of these

Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
 67%
From NCERT
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A polymer of acrylonitrile is called:

1. Saran

2. Orlon

3. Dacron

4. Tetron

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 74%
From NCERT
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Which one of the following pairs is not correctly matched?

1. Terylene—condensation polymer of terephthalic acid and ethylene glycol

2. Teflon—thermally stable cross-linked polymer of phenol and formaldehyde

3. Perspex—a homopolymer of methyl methacrylate

4. Synthetic rubber —a copolymer of butadiene and styrene

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 79%
From NCERT
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Natural silk and artificial silk differ in one respect that one of them contains:

(1) N                     

(2) S

(3) P                       

(4) none of these

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
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Among the given options , the one that is not fibre is: 

1. Terylene.

2. Nylons.

3. Polyacrylonitrile.

4. Polychloroprene.

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 60%
From NCERT
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Which of the following cannot be grouped as polyolefins?

(1) Polystyrene                     

(2) Polypropene

(3) Polystyrene                     

(4) Polyoxyethene

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 60%
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The monomer units of PTFE are:

(1) Cl2CH-CH3

(2) F2C=CF2

(3) F3C-CF3

(4) FClC=CF2

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 87%
From NCERT
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Among the given polymers, an example of homopolymer is:

1. Bakelite

2. Nylon-6,6

3. Terylene

4. Neoprene

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 79%
From NCERT
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Number average molecular mass (Mn) and mass average
mol. mass (M¯w)of synthetic polymers are related as:

(1) Mn < M¯w

(2) Mn > M¯w

(3) Mn = M¯w

(4) Mn > Mw

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 51%
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Which of the following is wrong?

1. PMMA is called plexiglass

2. PTFE is called teflon

3. SBR is called natural rubber

4. LDPE is called low density polyethylene

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 69%
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