The abbreviation PDI refers to:
(a) name of the polymer
(b) polydispersity index of polymer
(c) application of polymer
(d) poly diagonal index

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 80%
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The monomer units of silicons a water repellant, acid resistant and heat resistant polymer is:

(a) Si                          (b) SiO2

(c) R2SiO                    (d) none of these

Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
 73%
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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 |
 89%
From NCERT
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Which of the following natural products is not a polymer ?

(a) DNA

(b) Cellulose

(c) ATP

(d) Urease

Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
 65%
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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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Nylons, polyesters and cotton, all possess strength due to:

(a) intermolecule H-bonding

(b) van der Waals’ attraction

(c) dipole-dipole interaction

(d) none of the above

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 72%
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The catalyst used in the manufacture of polythene by Ziegler method is:
1. Titanium tetrachloride and triphenyl galium 
2. Titanium tetrachloride and triethyl aluminium
3. Titanium dioxide
4. Titanium isopropoxide

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 89%
From NCERT
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Of the following the step growth polymer is : 

1. Bakelite

2. Polyethylene

3. Teflon

4. PVC

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
 73%
From NCERT
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Condensation of caprolactam gives:

1. Nylon-6,6               

2. Nylon-6

3. Nitrile rubber         

4. Nylon-6,10

Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
 89%
From NCERT
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Natural silk and artificial silk differ in one respect that one of them contains:

(a) N                      (b) S

(c) P                       (d) none of these

Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
NEET - 2016
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